Intial Commit

nodered/rootfs/data/node_modules/htmlparser2/LICENSE

@@ -0,0 +1,18 @@
+Copyright 2010, 2011, Chris Winberry <chris@winberry.net>. All rights reserved.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to
+deal in the Software without restriction, including without limitation the
+rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+sell copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+ 
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+ 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+IN THE SOFTWARE.

nodered/rootfs/data/node_modules/htmlparser2/README.md

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+# htmlparser2
+
+[![NPM version](http://img.shields.io/npm/v/htmlparser2.svg?style=flat)](https://npmjs.org/package/htmlparser2)
+[![Downloads](https://img.shields.io/npm/dm/htmlparser2.svg?style=flat)](https://npmjs.org/package/htmlparser2)
+[![Build Status](http://img.shields.io/travis/fb55/htmlparser2/master.svg?style=flat)](http://travis-ci.org/fb55/htmlparser2)
+[![Coverage](http://img.shields.io/coveralls/fb55/htmlparser2.svg?style=flat)](https://coveralls.io/r/fb55/htmlparser2)
+
+A forgiving HTML/XML/RSS parser. The parser can handle streams and provides a callback interface.
+
+## Installation
+	npm install htmlparser2
+
+A live demo of htmlparser2 is available [here](https://astexplorer.net/#/2AmVrGuGVJ).
+
+## Usage
+
+```javascript
+var htmlparser = require("htmlparser2");
+var parser = new htmlparser.Parser({
+	onopentag: function(name, attribs){
+		if(name === "script" && attribs.type === "text/javascript"){
+			console.log("JS! Hooray!");
+		}
+	},
+	ontext: function(text){
+		console.log("-->", text);
+	},
+	onclosetag: function(tagname){
+		if(tagname === "script"){
+			console.log("That's it?!");
+		}
+	}
+}, {decodeEntities: true});
+parser.write("Xyz <script type='text/javascript'>var foo = '<<bar>>';</ script>");
+parser.end();
+```
+
+Output (simplified):
+
+```
+--> Xyz
+JS! Hooray!
+--> var foo = '<<bar>>';
+That's it?!
+```
+
+## Documentation
+
+Read more about the parser and its options in the [wiki](https://github.com/fb55/htmlparser2/wiki/Parser-options).
+
+## Get a DOM
+The `DomHandler` (known as `DefaultHandler` in the original `htmlparser` module) produces a DOM (document object model) that can be manipulated using the [`DomUtils`](https://github.com/fb55/DomUtils) helper.
+
+The `DomHandler`, while still bundled with this module, was moved to its [own module](https://github.com/fb55/domhandler). Have a look at it for further information.
+
+## Parsing RSS/RDF/Atom Feeds
+
+```javascript
+new htmlparser.FeedHandler(function(<error> error, <object> feed){
+    ...
+});
+```
+
+Note: While the provided feed handler works for most feeds, you might want to use  [danmactough/node-feedparser](https://github.com/danmactough/node-feedparser), which is much better tested and actively maintained.
+
+## Performance
+
+After having some artificial benchmarks for some time, __@AndreasMadsen__ published his [`htmlparser-benchmark`](https://github.com/AndreasMadsen/htmlparser-benchmark), which benchmarks HTML parses based on real-world websites.
+
+At the time of writing, the latest versions of all supported parsers show the following performance characteristics on [Travis CI](https://travis-ci.org/AndreasMadsen/htmlparser-benchmark/builds/10805007) (please note that Travis doesn't guarantee equal conditions for all tests):
+
+```
+gumbo-parser   : 34.9208 ms/file ± 21.4238
+html-parser    : 24.8224 ms/file ± 15.8703
+html5          : 419.597 ms/file ± 264.265
+htmlparser     : 60.0722 ms/file ± 384.844
+htmlparser2-dom: 12.0749 ms/file ± 6.49474
+htmlparser2    : 7.49130 ms/file ± 5.74368
+hubbub         : 30.4980 ms/file ± 16.4682
+libxmljs       : 14.1338 ms/file ± 18.6541
+parse5         : 22.0439 ms/file ± 15.3743
+sax            : 49.6513 ms/file ± 26.6032
+```
+
+## How does this module differ from [node-htmlparser](https://github.com/tautologistics/node-htmlparser)?
+
+This is a fork of the `htmlparser` module. The main difference is that this is intended to be used only with node (it runs on other platforms using [browserify](https://github.com/substack/node-browserify)). `htmlparser2` was rewritten multiple times and, while it maintains an API that's compatible with `htmlparser` in most cases, the projects don't share any code anymore.
+
+The parser now provides a callback interface close to [sax.js](https://github.com/isaacs/sax-js) (originally targeted at [readabilitySAX](https://github.com/fb55/readabilitysax)). As a result, old handlers won't work anymore.
+
+The `DefaultHandler` and the `RssHandler` were renamed to clarify their purpose (to `DomHandler` and `FeedHandler`). The old names are still available when requiring `htmlparser2`, your code should work as expected.

nodered/rootfs/data/node_modules/htmlparser2/lib/CollectingHandler.js

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+module.exports = CollectingHandler;
+
+function CollectingHandler(cbs) {
+    this._cbs = cbs || {};
+    this.events = [];
+}
+
+var EVENTS = require("./").EVENTS;
+Object.keys(EVENTS).forEach(function(name) {
+    if (EVENTS[name] === 0) {
+        name = "on" + name;
+        CollectingHandler.prototype[name] = function() {
+            this.events.push([name]);
+            if (this._cbs[name]) this._cbs[name]();
+        };
+    } else if (EVENTS[name] === 1) {
+        name = "on" + name;
+        CollectingHandler.prototype[name] = function(a) {
+            this.events.push([name, a]);
+            if (this._cbs[name]) this._cbs[name](a);
+        };
+    } else if (EVENTS[name] === 2) {
+        name = "on" + name;
+        CollectingHandler.prototype[name] = function(a, b) {
+            this.events.push([name, a, b]);
+            if (this._cbs[name]) this._cbs[name](a, b);
+        };
+    } else {
+        throw Error("wrong number of arguments");
+    }
+});
+
+CollectingHandler.prototype.onreset = function() {
+    this.events = [];
+    if (this._cbs.onreset) this._cbs.onreset();
+};
+
+CollectingHandler.prototype.restart = function() {
+    if (this._cbs.onreset) this._cbs.onreset();
+
+    for (var i = 0, len = this.events.length; i < len; i++) {
+        if (this._cbs[this.events[i][0]]) {
+            var num = this.events[i].length;
+
+            if (num === 1) {
+                this._cbs[this.events[i][0]]();
+            } else if (num === 2) {
+                this._cbs[this.events[i][0]](this.events[i][1]);
+            } else {
+                this._cbs[this.events[i][0]](
+                    this.events[i][1],
+                    this.events[i][2]
+                );
+            }
+        }
+    }
+};

nodered/rootfs/data/node_modules/htmlparser2/lib/FeedHandler.js

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+var DomHandler = require("domhandler");
+var DomUtils = require("domutils");
+
+//TODO: make this a streamable handler
+function FeedHandler(callback, options) {
+    this.init(callback, options);
+}
+
+require("inherits")(FeedHandler, DomHandler);
+
+FeedHandler.prototype.init = DomHandler;
+
+function getElements(what, where) {
+    return DomUtils.getElementsByTagName(what, where, true);
+}
+function getOneElement(what, where) {
+    return DomUtils.getElementsByTagName(what, where, true, 1)[0];
+}
+function fetch(what, where, recurse) {
+    return DomUtils.getText(
+        DomUtils.getElementsByTagName(what, where, recurse, 1)
+    ).trim();
+}
+
+function addConditionally(obj, prop, what, where, recurse) {
+    var tmp = fetch(what, where, recurse);
+    if (tmp) obj[prop] = tmp;
+}
+
+var isValidFeed = function(value) {
+    return value === "rss" || value === "feed" || value === "rdf:RDF";
+};
+
+FeedHandler.prototype.onend = function() {
+    var feed = {},
+        feedRoot = getOneElement(isValidFeed, this.dom),
+        tmp,
+        childs;
+
+    if (feedRoot) {
+        if (feedRoot.name === "feed") {
+            childs = feedRoot.children;
+
+            feed.type = "atom";
+            addConditionally(feed, "id", "id", childs);
+            addConditionally(feed, "title", "title", childs);
+            if (
+                (tmp = getOneElement("link", childs)) &&
+                (tmp = tmp.attribs) &&
+                (tmp = tmp.href)
+            )
+                feed.link = tmp;
+            addConditionally(feed, "description", "subtitle", childs);
+            if ((tmp = fetch("updated", childs))) feed.updated = new Date(tmp);
+            addConditionally(feed, "author", "email", childs, true);
+
+            feed.items = getElements("entry", childs).map(function(item) {
+                var entry = {},
+                    tmp;
+
+                item = item.children;
+
+                addConditionally(entry, "id", "id", item);
+                addConditionally(entry, "title", "title", item);
+                if (
+                    (tmp = getOneElement("link", item)) &&
+                    (tmp = tmp.attribs) &&
+                    (tmp = tmp.href)
+                )
+                    entry.link = tmp;
+                if ((tmp = fetch("summary", item) || fetch("content", item)))
+                    entry.description = tmp;
+                if ((tmp = fetch("updated", item)))
+                    entry.pubDate = new Date(tmp);
+                return entry;
+            });
+        } else {
+            childs = getOneElement("channel", feedRoot.children).children;
+
+            feed.type = feedRoot.name.substr(0, 3);
+            feed.id = "";
+            addConditionally(feed, "title", "title", childs);
+            addConditionally(feed, "link", "link", childs);
+            addConditionally(feed, "description", "description", childs);
+            if ((tmp = fetch("lastBuildDate", childs)))
+                feed.updated = new Date(tmp);
+            addConditionally(feed, "author", "managingEditor", childs, true);
+
+            feed.items = getElements("item", feedRoot.children).map(function(
+                item
+            ) {
+                var entry = {},
+                    tmp;
+
+                item = item.children;
+
+                addConditionally(entry, "id", "guid", item);
+                addConditionally(entry, "title", "title", item);
+                addConditionally(entry, "link", "link", item);
+                addConditionally(entry, "description", "description", item);
+                if ((tmp = fetch("pubDate", item)))
+                    entry.pubDate = new Date(tmp);
+                return entry;
+            });
+        }
+    }
+    this.dom = feed;
+    DomHandler.prototype._handleCallback.call(
+        this,
+        feedRoot ? null : Error("couldn't find root of feed")
+    );
+};
+
+module.exports = FeedHandler;

nodered/rootfs/data/node_modules/htmlparser2/lib/Parser.js

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+var Tokenizer = require("./Tokenizer.js");
+
+/*
+	Options:
+
+	xmlMode: Disables the special behavior for script/style tags (false by default)
+	lowerCaseAttributeNames: call .toLowerCase for each attribute name (true if xmlMode is `false`)
+	lowerCaseTags: call .toLowerCase for each tag name (true if xmlMode is `false`)
+*/
+
+/*
+	Callbacks:
+
+	oncdataend,
+	oncdatastart,
+	onclosetag,
+	oncomment,
+	oncommentend,
+	onerror,
+	onopentag,
+	onprocessinginstruction,
+	onreset,
+	ontext
+*/
+
+var formTags = {
+    input: true,
+    option: true,
+    optgroup: true,
+    select: true,
+    button: true,
+    datalist: true,
+    textarea: true
+};
+
+var openImpliesClose = {
+    tr: { tr: true, th: true, td: true },
+    th: { th: true },
+    td: { thead: true, th: true, td: true },
+    body: { head: true, link: true, script: true },
+    li: { li: true },
+    p: { p: true },
+    h1: { p: true },
+    h2: { p: true },
+    h3: { p: true },
+    h4: { p: true },
+    h5: { p: true },
+    h6: { p: true },
+    select: formTags,
+    input: formTags,
+    output: formTags,
+    button: formTags,
+    datalist: formTags,
+    textarea: formTags,
+    option: { option: true },
+    optgroup: { optgroup: true }
+};
+
+var voidElements = {
+    __proto__: null,
+    area: true,
+    base: true,
+    basefont: true,
+    br: true,
+    col: true,
+    command: true,
+    embed: true,
+    frame: true,
+    hr: true,
+    img: true,
+    input: true,
+    isindex: true,
+    keygen: true,
+    link: true,
+    meta: true,
+    param: true,
+    source: true,
+    track: true,
+    wbr: true
+};
+
+var foreignContextElements = {
+    __proto__: null,
+    math: true,
+    svg: true
+};
+var htmlIntegrationElements = {
+    __proto__: null,
+    mi: true,
+    mo: true,
+    mn: true,
+    ms: true,
+    mtext: true,
+    "annotation-xml": true,
+    foreignObject: true,
+    desc: true,
+    title: true
+};
+
+var re_nameEnd = /\s|\//;
+
+function Parser(cbs, options) {
+    this._options = options || {};
+    this._cbs = cbs || {};
+
+    this._tagname = "";
+    this._attribname = "";
+    this._attribvalue = "";
+    this._attribs = null;
+    this._stack = [];
+    this._foreignContext = [];
+
+    this.startIndex = 0;
+    this.endIndex = null;
+
+    this._lowerCaseTagNames =
+        "lowerCaseTags" in this._options
+            ? !!this._options.lowerCaseTags
+            : !this._options.xmlMode;
+    this._lowerCaseAttributeNames =
+        "lowerCaseAttributeNames" in this._options
+            ? !!this._options.lowerCaseAttributeNames
+            : !this._options.xmlMode;
+
+    if (this._options.Tokenizer) {
+        Tokenizer = this._options.Tokenizer;
+    }
+    this._tokenizer = new Tokenizer(this._options, this);
+
+    if (this._cbs.onparserinit) this._cbs.onparserinit(this);
+}
+
+require("inherits")(Parser, require("events").EventEmitter);
+
+Parser.prototype._updatePosition = function(initialOffset) {
+    if (this.endIndex === null) {
+        if (this._tokenizer._sectionStart <= initialOffset) {
+            this.startIndex = 0;
+        } else {
+            this.startIndex = this._tokenizer._sectionStart - initialOffset;
+        }
+    } else this.startIndex = this.endIndex + 1;
+    this.endIndex = this._tokenizer.getAbsoluteIndex();
+};
+
+//Tokenizer event handlers
+Parser.prototype.ontext = function(data) {
+    this._updatePosition(1);
+    this.endIndex--;
+
+    if (this._cbs.ontext) this._cbs.ontext(data);
+};
+
+Parser.prototype.onopentagname = function(name) {
+    if (this._lowerCaseTagNames) {
+        name = name.toLowerCase();
+    }
+
+    this._tagname = name;
+
+    if (!this._options.xmlMode && name in openImpliesClose) {
+        for (
+            var el;
+            (el = this._stack[this._stack.length - 1]) in
+            openImpliesClose[name];
+            this.onclosetag(el)
+        );
+    }
+
+    if (this._options.xmlMode || !(name in voidElements)) {
+        this._stack.push(name);
+        if (name in foreignContextElements) this._foreignContext.push(true);
+        else if (name in htmlIntegrationElements)
+            this._foreignContext.push(false);
+    }
+
+    if (this._cbs.onopentagname) this._cbs.onopentagname(name);
+    if (this._cbs.onopentag) this._attribs = {};
+};
+
+Parser.prototype.onopentagend = function() {
+    this._updatePosition(1);
+
+    if (this._attribs) {
+        if (this._cbs.onopentag)
+            this._cbs.onopentag(this._tagname, this._attribs);
+        this._attribs = null;
+    }
+
+    if (
+        !this._options.xmlMode &&
+        this._cbs.onclosetag &&
+        this._tagname in voidElements
+    ) {
+        this._cbs.onclosetag(this._tagname);
+    }
+
+    this._tagname = "";
+};
+
+Parser.prototype.onclosetag = function(name) {
+    this._updatePosition(1);
+
+    if (this._lowerCaseTagNames) {
+        name = name.toLowerCase();
+    }
+    
+    if (name in foreignContextElements || name in htmlIntegrationElements) {
+        this._foreignContext.pop();
+    }
+
+    if (
+        this._stack.length &&
+        (!(name in voidElements) || this._options.xmlMode)
+    ) {
+        var pos = this._stack.lastIndexOf(name);
+        if (pos !== -1) {
+            if (this._cbs.onclosetag) {
+                pos = this._stack.length - pos;
+                while (pos--) this._cbs.onclosetag(this._stack.pop());
+            } else this._stack.length = pos;
+        } else if (name === "p" && !this._options.xmlMode) {
+            this.onopentagname(name);
+            this._closeCurrentTag();
+        }
+    } else if (!this._options.xmlMode && (name === "br" || name === "p")) {
+        this.onopentagname(name);
+        this._closeCurrentTag();
+    }
+};
+
+Parser.prototype.onselfclosingtag = function() {
+    if (
+        this._options.xmlMode ||
+        this._options.recognizeSelfClosing ||
+        this._foreignContext[this._foreignContext.length - 1]
+    ) {
+        this._closeCurrentTag();
+    } else {
+        this.onopentagend();
+    }
+};
+
+Parser.prototype._closeCurrentTag = function() {
+    var name = this._tagname;
+
+    this.onopentagend();
+
+    //self-closing tags will be on the top of the stack
+    //(cheaper check than in onclosetag)
+    if (this._stack[this._stack.length - 1] === name) {
+        if (this._cbs.onclosetag) {
+            this._cbs.onclosetag(name);
+        }
+        this._stack.pop();
+        
+    }
+};
+
+Parser.prototype.onattribname = function(name) {
+    if (this._lowerCaseAttributeNames) {
+        name = name.toLowerCase();
+    }
+    this._attribname = name;
+};
+
+Parser.prototype.onattribdata = function(value) {
+    this._attribvalue += value;
+};
+
+Parser.prototype.onattribend = function() {
+    if (this._cbs.onattribute)
+        this._cbs.onattribute(this._attribname, this._attribvalue);
+    if (
+        this._attribs &&
+        !Object.prototype.hasOwnProperty.call(this._attribs, this._attribname)
+    ) {
+        this._attribs[this._attribname] = this._attribvalue;
+    }
+    this._attribname = "";
+    this._attribvalue = "";
+};
+
+Parser.prototype._getInstructionName = function(value) {
+    var idx = value.search(re_nameEnd),
+        name = idx < 0 ? value : value.substr(0, idx);
+
+    if (this._lowerCaseTagNames) {
+        name = name.toLowerCase();
+    }
+
+    return name;
+};
+
+Parser.prototype.ondeclaration = function(value) {
+    if (this._cbs.onprocessinginstruction) {
+        var name = this._getInstructionName(value);
+        this._cbs.onprocessinginstruction("!" + name, "!" + value);
+    }
+};
+
+Parser.prototype.onprocessinginstruction = function(value) {
+    if (this._cbs.onprocessinginstruction) {
+        var name = this._getInstructionName(value);
+        this._cbs.onprocessinginstruction("?" + name, "?" + value);
+    }
+};
+
+Parser.prototype.oncomment = function(value) {
+    this._updatePosition(4);
+
+    if (this._cbs.oncomment) this._cbs.oncomment(value);
+    if (this._cbs.oncommentend) this._cbs.oncommentend();
+};
+
+Parser.prototype.oncdata = function(value) {
+    this._updatePosition(1);
+
+    if (this._options.xmlMode || this._options.recognizeCDATA) {
+        if (this._cbs.oncdatastart) this._cbs.oncdatastart();
+        if (this._cbs.ontext) this._cbs.ontext(value);
+        if (this._cbs.oncdataend) this._cbs.oncdataend();
+    } else {
+        this.oncomment("[CDATA[" + value + "]]");
+    }
+};
+
+Parser.prototype.onerror = function(err) {
+    if (this._cbs.onerror) this._cbs.onerror(err);
+};
+
+Parser.prototype.onend = function() {
+    if (this._cbs.onclosetag) {
+        for (
+            var i = this._stack.length;
+            i > 0;
+            this._cbs.onclosetag(this._stack[--i])
+        );
+    }
+    if (this._cbs.onend) this._cbs.onend();
+};
+
+//Resets the parser to a blank state, ready to parse a new HTML document
+Parser.prototype.reset = function() {
+    if (this._cbs.onreset) this._cbs.onreset();
+    this._tokenizer.reset();
+
+    this._tagname = "";
+    this._attribname = "";
+    this._attribs = null;
+    this._stack = [];
+
+    if (this._cbs.onparserinit) this._cbs.onparserinit(this);
+};
+
+//Parses a complete HTML document and pushes it to the handler
+Parser.prototype.parseComplete = function(data) {
+    this.reset();
+    this.end(data);
+};
+
+Parser.prototype.write = function(chunk) {
+    this._tokenizer.write(chunk);
+};
+
+Parser.prototype.end = function(chunk) {
+    this._tokenizer.end(chunk);
+};
+
+Parser.prototype.pause = function() {
+    this._tokenizer.pause();
+};
+
+Parser.prototype.resume = function() {
+    this._tokenizer.resume();
+};
+
+//alias for backwards compat
+Parser.prototype.parseChunk = Parser.prototype.write;
+Parser.prototype.done = Parser.prototype.end;
+
+module.exports = Parser;

nodered/rootfs/data/node_modules/htmlparser2/lib/ProxyHandler.js

@@ -0,0 +1,27 @@
+module.exports = ProxyHandler;
+
+function ProxyHandler(cbs) {
+    this._cbs = cbs || {};
+}
+
+var EVENTS = require("./").EVENTS;
+Object.keys(EVENTS).forEach(function(name) {
+    if (EVENTS[name] === 0) {
+        name = "on" + name;
+        ProxyHandler.prototype[name] = function() {
+            if (this._cbs[name]) this._cbs[name]();
+        };
+    } else if (EVENTS[name] === 1) {
+        name = "on" + name;
+        ProxyHandler.prototype[name] = function(a) {
+            if (this._cbs[name]) this._cbs[name](a);
+        };
+    } else if (EVENTS[name] === 2) {
+        name = "on" + name;
+        ProxyHandler.prototype[name] = function(a, b) {
+            if (this._cbs[name]) this._cbs[name](a, b);
+        };
+    } else {
+        throw Error("wrong number of arguments");
+    }
+});

nodered/rootfs/data/node_modules/htmlparser2/lib/Stream.js

@@ -0,0 +1,35 @@
+module.exports = Stream;
+
+var Parser = require("./WritableStream.js");
+
+function Stream(options) {
+    Parser.call(this, new Cbs(this), options);
+}
+
+require("inherits")(Stream, Parser);
+
+Stream.prototype.readable = true;
+
+function Cbs(scope) {
+    this.scope = scope;
+}
+
+var EVENTS = require("../").EVENTS;
+
+Object.keys(EVENTS).forEach(function(name) {
+    if (EVENTS[name] === 0) {
+        Cbs.prototype["on" + name] = function() {
+            this.scope.emit(name);
+        };
+    } else if (EVENTS[name] === 1) {
+        Cbs.prototype["on" + name] = function(a) {
+            this.scope.emit(name, a);
+        };
+    } else if (EVENTS[name] === 2) {
+        Cbs.prototype["on" + name] = function(a, b) {
+            this.scope.emit(name, a, b);
+        };
+    } else {
+        throw Error("wrong number of arguments!");
+    }
+});

nodered/rootfs/data/node_modules/htmlparser2/lib/Tokenizer.js

@@ -0,0 +1,970 @@
+module.exports = Tokenizer;
+
+var decodeCodePoint = require("entities/lib/decode_codepoint.js");
+var entityMap = require("entities/maps/entities.json");
+var legacyMap = require("entities/maps/legacy.json");
+var xmlMap = require("entities/maps/xml.json");
+
+var i = 0;
+
+var TEXT = i++;
+var BEFORE_TAG_NAME = i++; //after <
+var IN_TAG_NAME = i++;
+var IN_SELF_CLOSING_TAG = i++;
+var BEFORE_CLOSING_TAG_NAME = i++;
+var IN_CLOSING_TAG_NAME = i++;
+var AFTER_CLOSING_TAG_NAME = i++;
+
+//attributes
+var BEFORE_ATTRIBUTE_NAME = i++;
+var IN_ATTRIBUTE_NAME = i++;
+var AFTER_ATTRIBUTE_NAME = i++;
+var BEFORE_ATTRIBUTE_VALUE = i++;
+var IN_ATTRIBUTE_VALUE_DQ = i++; // "
+var IN_ATTRIBUTE_VALUE_SQ = i++; // '
+var IN_ATTRIBUTE_VALUE_NQ = i++;
+
+//declarations
+var BEFORE_DECLARATION = i++; // !
+var IN_DECLARATION = i++;
+
+//processing instructions
+var IN_PROCESSING_INSTRUCTION = i++; // ?
+
+//comments
+var BEFORE_COMMENT = i++;
+var IN_COMMENT = i++;
+var AFTER_COMMENT_1 = i++;
+var AFTER_COMMENT_2 = i++;
+
+//cdata
+var BEFORE_CDATA_1 = i++; // [
+var BEFORE_CDATA_2 = i++; // C
+var BEFORE_CDATA_3 = i++; // D
+var BEFORE_CDATA_4 = i++; // A
+var BEFORE_CDATA_5 = i++; // T
+var BEFORE_CDATA_6 = i++; // A
+var IN_CDATA = i++; // [
+var AFTER_CDATA_1 = i++; // ]
+var AFTER_CDATA_2 = i++; // ]
+
+//special tags
+var BEFORE_SPECIAL = i++; //S
+var BEFORE_SPECIAL_END = i++; //S
+
+var BEFORE_SCRIPT_1 = i++; //C
+var BEFORE_SCRIPT_2 = i++; //R
+var BEFORE_SCRIPT_3 = i++; //I
+var BEFORE_SCRIPT_4 = i++; //P
+var BEFORE_SCRIPT_5 = i++; //T
+var AFTER_SCRIPT_1 = i++; //C
+var AFTER_SCRIPT_2 = i++; //R
+var AFTER_SCRIPT_3 = i++; //I
+var AFTER_SCRIPT_4 = i++; //P
+var AFTER_SCRIPT_5 = i++; //T
+
+var BEFORE_STYLE_1 = i++; //T
+var BEFORE_STYLE_2 = i++; //Y
+var BEFORE_STYLE_3 = i++; //L
+var BEFORE_STYLE_4 = i++; //E
+var AFTER_STYLE_1 = i++; //T
+var AFTER_STYLE_2 = i++; //Y
+var AFTER_STYLE_3 = i++; //L
+var AFTER_STYLE_4 = i++; //E
+
+var BEFORE_ENTITY = i++; //&
+var BEFORE_NUMERIC_ENTITY = i++; //#
+var IN_NAMED_ENTITY = i++;
+var IN_NUMERIC_ENTITY = i++;
+var IN_HEX_ENTITY = i++; //X
+
+var j = 0;
+
+var SPECIAL_NONE = j++;
+var SPECIAL_SCRIPT = j++;
+var SPECIAL_STYLE = j++;
+
+function whitespace(c) {
+    return c === " " || c === "\n" || c === "\t" || c === "\f" || c === "\r";
+}
+
+function ifElseState(upper, SUCCESS, FAILURE) {
+    var lower = upper.toLowerCase();
+
+    if (upper === lower) {
+        return function(c) {
+            if (c === lower) {
+                this._state = SUCCESS;
+            } else {
+                this._state = FAILURE;
+                this._index--;
+            }
+        };
+    } else {
+        return function(c) {
+            if (c === lower || c === upper) {
+                this._state = SUCCESS;
+            } else {
+                this._state = FAILURE;
+                this._index--;
+            }
+        };
+    }
+}
+
+function consumeSpecialNameChar(upper, NEXT_STATE) {
+    var lower = upper.toLowerCase();
+
+    return function(c) {
+        if (c === lower || c === upper) {
+            this._state = NEXT_STATE;
+        } else {
+            this._state = IN_TAG_NAME;
+            this._index--; //consume the token again
+        }
+    };
+}
+
+function Tokenizer(options, cbs) {
+    this._state = TEXT;
+    this._buffer = "";
+    this._sectionStart = 0;
+    this._index = 0;
+    this._bufferOffset = 0; //chars removed from _buffer
+    this._baseState = TEXT;
+    this._special = SPECIAL_NONE;
+    this._cbs = cbs;
+    this._running = true;
+    this._ended = false;
+    this._xmlMode = !!(options && options.xmlMode);
+    this._decodeEntities = !!(options && options.decodeEntities);
+}
+
+Tokenizer.prototype._stateText = function(c) {
+    if (c === "<") {
+        if (this._index > this._sectionStart) {
+            this._cbs.ontext(this._getSection());
+        }
+        this._state = BEFORE_TAG_NAME;
+        this._sectionStart = this._index;
+    } else if (
+        this._decodeEntities &&
+        this._special === SPECIAL_NONE &&
+        c === "&"
+    ) {
+        if (this._index > this._sectionStart) {
+            this._cbs.ontext(this._getSection());
+        }
+        this._baseState = TEXT;
+        this._state = BEFORE_ENTITY;
+        this._sectionStart = this._index;
+    }
+};
+
+Tokenizer.prototype._stateBeforeTagName = function(c) {
+    if (c === "/") {
+        this._state = BEFORE_CLOSING_TAG_NAME;
+    } else if (c === "<") {
+        this._cbs.ontext(this._getSection());
+        this._sectionStart = this._index;
+    } else if (c === ">" || this._special !== SPECIAL_NONE || whitespace(c)) {
+        this._state = TEXT;
+    } else if (c === "!") {
+        this._state = BEFORE_DECLARATION;
+        this._sectionStart = this._index + 1;
+    } else if (c === "?") {
+        this._state = IN_PROCESSING_INSTRUCTION;
+        this._sectionStart = this._index + 1;
+    } else {
+        this._state =
+            !this._xmlMode && (c === "s" || c === "S")
+                ? BEFORE_SPECIAL
+                : IN_TAG_NAME;
+        this._sectionStart = this._index;
+    }
+};
+
+Tokenizer.prototype._stateInTagName = function(c) {
+    if (c === "/" || c === ">" || whitespace(c)) {
+        this._emitToken("onopentagname");
+        this._state = BEFORE_ATTRIBUTE_NAME;
+        this._index--;
+    }
+};
+
+Tokenizer.prototype._stateBeforeCloseingTagName = function(c) {
+    if (whitespace(c));
+    else if (c === ">") {
+        this._state = TEXT;
+    } else if (this._special !== SPECIAL_NONE) {
+        if (c === "s" || c === "S") {
+            this._state = BEFORE_SPECIAL_END;
+        } else {
+            this._state = TEXT;
+            this._index--;
+        }
+    } else {
+        this._state = IN_CLOSING_TAG_NAME;
+        this._sectionStart = this._index;
+    }
+};
+
+Tokenizer.prototype._stateInCloseingTagName = function(c) {
+    if (c === ">" || whitespace(c)) {
+        this._emitToken("onclosetag");
+        this._state = AFTER_CLOSING_TAG_NAME;
+        this._index--;
+    }
+};
+
+Tokenizer.prototype._stateAfterCloseingTagName = function(c) {
+    //skip everything until ">"
+    if (c === ">") {
+        this._state = TEXT;
+        this._sectionStart = this._index + 1;
+    }
+};
+
+Tokenizer.prototype._stateBeforeAttributeName = function(c) {
+    if (c === ">") {
+        this._cbs.onopentagend();
+        this._state = TEXT;
+        this._sectionStart = this._index + 1;
+    } else if (c === "/") {
+        this._state = IN_SELF_CLOSING_TAG;
+    } else if (!whitespace(c)) {
+        this._state = IN_ATTRIBUTE_NAME;
+        this._sectionStart = this._index;
+    }
+};
+
+Tokenizer.prototype._stateInSelfClosingTag = function(c) {
+    if (c === ">") {
+        this._cbs.onselfclosingtag();
+        this._state = TEXT;
+        this._sectionStart = this._index + 1;
+    } else if (!whitespace(c)) {
+        this._state = BEFORE_ATTRIBUTE_NAME;
+        this._index--;
+    }
+};
+
+Tokenizer.prototype._stateInAttributeName = function(c) {
+    if (c === "=" || c === "/" || c === ">" || whitespace(c)) {
+        this._cbs.onattribname(this._getSection());
+        this._sectionStart = -1;
+        this._state = AFTER_ATTRIBUTE_NAME;
+        this._index--;
+    }
+};
+
+Tokenizer.prototype._stateAfterAttributeName = function(c) {
+    if (c === "=") {
+        this._state = BEFORE_ATTRIBUTE_VALUE;
+    } else if (c === "/" || c === ">") {
+        this._cbs.onattribend();
+        this._state = BEFORE_ATTRIBUTE_NAME;
+        this._index--;
+    } else if (!whitespace(c)) {
+        this._cbs.onattribend();
+        this._state = IN_ATTRIBUTE_NAME;
+        this._sectionStart = this._index;
+    }
+};
+
+Tokenizer.prototype._stateBeforeAttributeValue = function(c) {
+    if (c === '"') {
+        this._state = IN_ATTRIBUTE_VALUE_DQ;
+        this._sectionStart = this._index + 1;
+    } else if (c === "'") {
+        this._state = IN_ATTRIBUTE_VALUE_SQ;
+        this._sectionStart = this._index + 1;
+    } else if (!whitespace(c)) {
+        this._state = IN_ATTRIBUTE_VALUE_NQ;
+        this._sectionStart = this._index;
+        this._index--; //reconsume token
+    }
+};
+
+Tokenizer.prototype._stateInAttributeValueDoubleQuotes = function(c) {
+    if (c === '"') {
+        this._emitToken("onattribdata");
+        this._cbs.onattribend();
+        this._state = BEFORE_ATTRIBUTE_NAME;
+    } else if (this._decodeEntities && c === "&") {
+        this._emitToken("onattribdata");
+        this._baseState = this._state;
+        this._state = BEFORE_ENTITY;
+        this._sectionStart = this._index;
+    }
+};
+
+Tokenizer.prototype._stateInAttributeValueSingleQuotes = function(c) {
+    if (c === "'") {
+        this._emitToken("onattribdata");
+        this._cbs.onattribend();
+        this._state = BEFORE_ATTRIBUTE_NAME;
+    } else if (this._decodeEntities && c === "&") {
+        this._emitToken("onattribdata");
+        this._baseState = this._state;
+        this._state = BEFORE_ENTITY;
+        this._sectionStart = this._index;
+    }
+};
+
+Tokenizer.prototype._stateInAttributeValueNoQuotes = function(c) {
+    if (whitespace(c) || c === ">") {
+        this._emitToken("onattribdata");
+        this._cbs.onattribend();
+        this._state = BEFORE_ATTRIBUTE_NAME;
+        this._index--;
+    } else if (this._decodeEntities && c === "&") {
+        this._emitToken("onattribdata");
+        this._baseState = this._state;
+        this._state = BEFORE_ENTITY;
+        this._sectionStart = this._index;
+    }
+};
+
+Tokenizer.prototype._stateBeforeDeclaration = function(c) {
+    this._state =
+        c === "["
+            ? BEFORE_CDATA_1
+            : c === "-"
+                ? BEFORE_COMMENT
+                : IN_DECLARATION;
+};
+
+Tokenizer.prototype._stateInDeclaration = function(c) {
+    if (c === ">") {
+        this._cbs.ondeclaration(this._getSection());
+        this._state = TEXT;
+        this._sectionStart = this._index + 1;
+    }
+};
+
+Tokenizer.prototype._stateInProcessingInstruction = function(c) {
+    if (c === ">") {
+        this._cbs.onprocessinginstruction(this._getSection());
+        this._state = TEXT;
+        this._sectionStart = this._index + 1;
+    }
+};
+
+Tokenizer.prototype._stateBeforeComment = function(c) {
+    if (c === "-") {
+        this._state = IN_COMMENT;
+        this._sectionStart = this._index + 1;
+    } else {
+        this._state = IN_DECLARATION;
+    }
+};
+
+Tokenizer.prototype._stateInComment = function(c) {
+    if (c === "-") this._state = AFTER_COMMENT_1;
+};
+
+Tokenizer.prototype._stateAfterComment1 = function(c) {
+    if (c === "-") {
+        this._state = AFTER_COMMENT_2;
+    } else {
+        this._state = IN_COMMENT;
+    }
+};
+
+Tokenizer.prototype._stateAfterComment2 = function(c) {
+    if (c === ">") {
+        //remove 2 trailing chars
+        this._cbs.oncomment(
+            this._buffer.substring(this._sectionStart, this._index - 2)
+        );
+        this._state = TEXT;
+        this._sectionStart = this._index + 1;
+    } else if (c !== "-") {
+        this._state = IN_COMMENT;
+    }
+    // else: stay in AFTER_COMMENT_2 (`--->`)
+};
+
+Tokenizer.prototype._stateBeforeCdata1 = ifElseState(
+    "C",
+    BEFORE_CDATA_2,
+    IN_DECLARATION
+);
+Tokenizer.prototype._stateBeforeCdata2 = ifElseState(
+    "D",
+    BEFORE_CDATA_3,
+    IN_DECLARATION
+);
+Tokenizer.prototype._stateBeforeCdata3 = ifElseState(
+    "A",
+    BEFORE_CDATA_4,
+    IN_DECLARATION
+);
+Tokenizer.prototype._stateBeforeCdata4 = ifElseState(
+    "T",
+    BEFORE_CDATA_5,
+    IN_DECLARATION
+);
+Tokenizer.prototype._stateBeforeCdata5 = ifElseState(
+    "A",
+    BEFORE_CDATA_6,
+    IN_DECLARATION
+);
+
+Tokenizer.prototype._stateBeforeCdata6 = function(c) {
+    if (c === "[") {
+        this._state = IN_CDATA;
+        this._sectionStart = this._index + 1;
+    } else {
+        this._state = IN_DECLARATION;
+        this._index--;
+    }
+};
+
+Tokenizer.prototype._stateInCdata = function(c) {
+    if (c === "]") this._state = AFTER_CDATA_1;
+};
+
+Tokenizer.prototype._stateAfterCdata1 = function(c) {
+    if (c === "]") this._state = AFTER_CDATA_2;
+    else this._state = IN_CDATA;
+};
+
+Tokenizer.prototype._stateAfterCdata2 = function(c) {
+    if (c === ">") {
+        //remove 2 trailing chars
+        this._cbs.oncdata(
+            this._buffer.substring(this._sectionStart, this._index - 2)
+        );
+        this._state = TEXT;
+        this._sectionStart = this._index + 1;
+    } else if (c !== "]") {
+        this._state = IN_CDATA;
+    }
+    //else: stay in AFTER_CDATA_2 (`]]]>`)
+};
+
+Tokenizer.prototype._stateBeforeSpecial = function(c) {
+    if (c === "c" || c === "C") {
+        this._state = BEFORE_SCRIPT_1;
+    } else if (c === "t" || c === "T") {
+        this._state = BEFORE_STYLE_1;
+    } else {
+        this._state = IN_TAG_NAME;
+        this._index--; //consume the token again
+    }
+};
+
+Tokenizer.prototype._stateBeforeSpecialEnd = function(c) {
+    if (this._special === SPECIAL_SCRIPT && (c === "c" || c === "C")) {
+        this._state = AFTER_SCRIPT_1;
+    } else if (this._special === SPECIAL_STYLE && (c === "t" || c === "T")) {
+        this._state = AFTER_STYLE_1;
+    } else this._state = TEXT;
+};
+
+Tokenizer.prototype._stateBeforeScript1 = consumeSpecialNameChar(
+    "R",
+    BEFORE_SCRIPT_2
+);
+Tokenizer.prototype._stateBeforeScript2 = consumeSpecialNameChar(
+    "I",
+    BEFORE_SCRIPT_3
+);
+Tokenizer.prototype._stateBeforeScript3 = consumeSpecialNameChar(
+    "P",
+    BEFORE_SCRIPT_4
+);
+Tokenizer.prototype._stateBeforeScript4 = consumeSpecialNameChar(
+    "T",
+    BEFORE_SCRIPT_5
+);
+
+Tokenizer.prototype._stateBeforeScript5 = function(c) {
+    if (c === "/" || c === ">" || whitespace(c)) {
+        this._special = SPECIAL_SCRIPT;
+    }
+    this._state = IN_TAG_NAME;
+    this._index--; //consume the token again
+};
+
+Tokenizer.prototype._stateAfterScript1 = ifElseState("R", AFTER_SCRIPT_2, TEXT);
+Tokenizer.prototype._stateAfterScript2 = ifElseState("I", AFTER_SCRIPT_3, TEXT);
+Tokenizer.prototype._stateAfterScript3 = ifElseState("P", AFTER_SCRIPT_4, TEXT);
+Tokenizer.prototype._stateAfterScript4 = ifElseState("T", AFTER_SCRIPT_5, TEXT);
+
+Tokenizer.prototype._stateAfterScript5 = function(c) {
+    if (c === ">" || whitespace(c)) {
+        this._special = SPECIAL_NONE;
+        this._state = IN_CLOSING_TAG_NAME;
+        this._sectionStart = this._index - 6;
+        this._index--; //reconsume the token
+    } else this._state = TEXT;
+};
+
+Tokenizer.prototype._stateBeforeStyle1 = consumeSpecialNameChar(
+    "Y",
+    BEFORE_STYLE_2
+);
+Tokenizer.prototype._stateBeforeStyle2 = consumeSpecialNameChar(
+    "L",
+    BEFORE_STYLE_3
+);
+Tokenizer.prototype._stateBeforeStyle3 = consumeSpecialNameChar(
+    "E",
+    BEFORE_STYLE_4
+);
+
+Tokenizer.prototype._stateBeforeStyle4 = function(c) {
+    if (c === "/" || c === ">" || whitespace(c)) {
+        this._special = SPECIAL_STYLE;
+    }
+    this._state = IN_TAG_NAME;
+    this._index--; //consume the token again
+};
+
+Tokenizer.prototype._stateAfterStyle1 = ifElseState("Y", AFTER_STYLE_2, TEXT);
+Tokenizer.prototype._stateAfterStyle2 = ifElseState("L", AFTER_STYLE_3, TEXT);
+Tokenizer.prototype._stateAfterStyle3 = ifElseState("E", AFTER_STYLE_4, TEXT);
+
+Tokenizer.prototype._stateAfterStyle4 = function(c) {
+    if (c === ">" || whitespace(c)) {
+        this._special = SPECIAL_NONE;
+        this._state = IN_CLOSING_TAG_NAME;
+        this._sectionStart = this._index - 5;
+        this._index--; //reconsume the token
+    } else this._state = TEXT;
+};
+
+Tokenizer.prototype._stateBeforeEntity = ifElseState(
+    "#",
+    BEFORE_NUMERIC_ENTITY,
+    IN_NAMED_ENTITY
+);
+Tokenizer.prototype._stateBeforeNumericEntity = ifElseState(
+    "X",
+    IN_HEX_ENTITY,
+    IN_NUMERIC_ENTITY
+);
+
+//for entities terminated with a semicolon
+Tokenizer.prototype._parseNamedEntityStrict = function() {
+    //offset = 1
+    if (this._sectionStart + 1 < this._index) {
+        var entity = this._buffer.substring(
+                this._sectionStart + 1,
+                this._index
+            ),
+            map = this._xmlMode ? xmlMap : entityMap;
+
+        if (map.hasOwnProperty(entity)) {
+            this._emitPartial(map[entity]);
+            this._sectionStart = this._index + 1;
+        }
+    }
+};
+
+//parses legacy entities (without trailing semicolon)
+Tokenizer.prototype._parseLegacyEntity = function() {
+    var start = this._sectionStart + 1,
+        limit = this._index - start;
+
+    if (limit > 6) limit = 6; //the max length of legacy entities is 6
+
+    while (limit >= 2) {
+        //the min length of legacy entities is 2
+        var entity = this._buffer.substr(start, limit);
+
+        if (legacyMap.hasOwnProperty(entity)) {
+            this._emitPartial(legacyMap[entity]);
+            this._sectionStart += limit + 1;
+            return;
+        } else {
+            limit--;
+        }
+    }
+};
+
+Tokenizer.prototype._stateInNamedEntity = function(c) {
+    if (c === ";") {
+        this._parseNamedEntityStrict();
+        if (this._sectionStart + 1 < this._index && !this._xmlMode) {
+            this._parseLegacyEntity();
+        }
+        this._state = this._baseState;
+    } else if (
+        (c < "a" || c > "z") &&
+        (c < "A" || c > "Z") &&
+        (c < "0" || c > "9")
+    ) {
+        if (this._xmlMode);
+        else if (this._sectionStart + 1 === this._index);
+        else if (this._baseState !== TEXT) {
+            if (c !== "=") {
+                this._parseNamedEntityStrict();
+            }
+        } else {
+            this._parseLegacyEntity();
+        }
+
+        this._state = this._baseState;
+        this._index--;
+    }
+};
+
+Tokenizer.prototype._decodeNumericEntity = function(offset, base) {
+    var sectionStart = this._sectionStart + offset;
+
+    if (sectionStart !== this._index) {
+        //parse entity
+        var entity = this._buffer.substring(sectionStart, this._index);
+        var parsed = parseInt(entity, base);
+
+        this._emitPartial(decodeCodePoint(parsed));
+        this._sectionStart = this._index;
+    } else {
+        this._sectionStart--;
+    }
+
+    this._state = this._baseState;
+};
+
+Tokenizer.prototype._stateInNumericEntity = function(c) {
+    if (c === ";") {
+        this._decodeNumericEntity(2, 10);
+        this._sectionStart++;
+    } else if (c < "0" || c > "9") {
+        if (!this._xmlMode) {
+            this._decodeNumericEntity(2, 10);
+        } else {
+            this._state = this._baseState;
+        }
+        this._index--;
+    }
+};
+
+Tokenizer.prototype._stateInHexEntity = function(c) {
+    if (c === ";") {
+        this._decodeNumericEntity(3, 16);
+        this._sectionStart++;
+    } else if (
+        (c < "a" || c > "f") &&
+        (c < "A" || c > "F") &&
+        (c < "0" || c > "9")
+    ) {
+        if (!this._xmlMode) {
+            this._decodeNumericEntity(3, 16);
+        } else {
+            this._state = this._baseState;
+        }
+        this._index--;
+    }
+};
+
+Tokenizer.prototype._cleanup = function() {
+    if (this._sectionStart < 0) {
+        this._buffer = "";
+        this._bufferOffset += this._index;
+        this._index = 0;
+    } else if (this._running) {
+        if (this._state === TEXT) {
+            if (this._sectionStart !== this._index) {
+                this._cbs.ontext(this._buffer.substr(this._sectionStart));
+            }
+            this._buffer = "";
+            this._bufferOffset += this._index;
+            this._index = 0;
+        } else if (this._sectionStart === this._index) {
+            //the section just started
+            this._buffer = "";
+            this._bufferOffset += this._index;
+            this._index = 0;
+        } else {
+            //remove everything unnecessary
+            this._buffer = this._buffer.substr(this._sectionStart);
+            this._index -= this._sectionStart;
+            this._bufferOffset += this._sectionStart;
+        }
+
+        this._sectionStart = 0;
+    }
+};
+
+//TODO make events conditional
+Tokenizer.prototype.write = function(chunk) {
+    if (this._ended) this._cbs.onerror(Error(".write() after done!"));
+
+    this._buffer += chunk;
+    this._parse();
+};
+
+Tokenizer.prototype._parse = function() {
+    while (this._index < this._buffer.length && this._running) {
+        var c = this._buffer.charAt(this._index);
+        if (this._state === TEXT) {
+            this._stateText(c);
+        } else if (this._state === BEFORE_TAG_NAME) {
+            this._stateBeforeTagName(c);
+        } else if (this._state === IN_TAG_NAME) {
+            this._stateInTagName(c);
+        } else if (this._state === BEFORE_CLOSING_TAG_NAME) {
+            this._stateBeforeCloseingTagName(c);
+        } else if (this._state === IN_CLOSING_TAG_NAME) {
+            this._stateInCloseingTagName(c);
+        } else if (this._state === AFTER_CLOSING_TAG_NAME) {
+            this._stateAfterCloseingTagName(c);
+        } else if (this._state === IN_SELF_CLOSING_TAG) {
+            this._stateInSelfClosingTag(c);
+        } else if (this._state === BEFORE_ATTRIBUTE_NAME) {
+
+        /*
+		*	attributes
+		*/
+            this._stateBeforeAttributeName(c);
+        } else if (this._state === IN_ATTRIBUTE_NAME) {
+            this._stateInAttributeName(c);
+        } else if (this._state === AFTER_ATTRIBUTE_NAME) {
+            this._stateAfterAttributeName(c);
+        } else if (this._state === BEFORE_ATTRIBUTE_VALUE) {
+            this._stateBeforeAttributeValue(c);
+        } else if (this._state === IN_ATTRIBUTE_VALUE_DQ) {
+            this._stateInAttributeValueDoubleQuotes(c);
+        } else if (this._state === IN_ATTRIBUTE_VALUE_SQ) {
+            this._stateInAttributeValueSingleQuotes(c);
+        } else if (this._state === IN_ATTRIBUTE_VALUE_NQ) {
+            this._stateInAttributeValueNoQuotes(c);
+        } else if (this._state === BEFORE_DECLARATION) {
+
+        /*
+		*	declarations
+		*/
+            this._stateBeforeDeclaration(c);
+        } else if (this._state === IN_DECLARATION) {
+            this._stateInDeclaration(c);
+        } else if (this._state === IN_PROCESSING_INSTRUCTION) {
+
+        /*
+		*	processing instructions
+		*/
+            this._stateInProcessingInstruction(c);
+        } else if (this._state === BEFORE_COMMENT) {
+
+        /*
+		*	comments
+		*/
+            this._stateBeforeComment(c);
+        } else if (this._state === IN_COMMENT) {
+            this._stateInComment(c);
+        } else if (this._state === AFTER_COMMENT_1) {
+            this._stateAfterComment1(c);
+        } else if (this._state === AFTER_COMMENT_2) {
+            this._stateAfterComment2(c);
+        } else if (this._state === BEFORE_CDATA_1) {
+
+        /*
+		*	cdata
+		*/
+            this._stateBeforeCdata1(c);
+        } else if (this._state === BEFORE_CDATA_2) {
+            this._stateBeforeCdata2(c);
+        } else if (this._state === BEFORE_CDATA_3) {
+            this._stateBeforeCdata3(c);
+        } else if (this._state === BEFORE_CDATA_4) {
+            this._stateBeforeCdata4(c);
+        } else if (this._state === BEFORE_CDATA_5) {
+            this._stateBeforeCdata5(c);
+        } else if (this._state === BEFORE_CDATA_6) {
+            this._stateBeforeCdata6(c);
+        } else if (this._state === IN_CDATA) {
+            this._stateInCdata(c);
+        } else if (this._state === AFTER_CDATA_1) {
+            this._stateAfterCdata1(c);
+        } else if (this._state === AFTER_CDATA_2) {
+            this._stateAfterCdata2(c);
+        } else if (this._state === BEFORE_SPECIAL) {
+
+        /*
+		* special tags
+		*/
+            this._stateBeforeSpecial(c);
+        } else if (this._state === BEFORE_SPECIAL_END) {
+            this._stateBeforeSpecialEnd(c);
+        } else if (this._state === BEFORE_SCRIPT_1) {
+
+        /*
+		* script
+		*/
+            this._stateBeforeScript1(c);
+        } else if (this._state === BEFORE_SCRIPT_2) {
+            this._stateBeforeScript2(c);
+        } else if (this._state === BEFORE_SCRIPT_3) {
+            this._stateBeforeScript3(c);
+        } else if (this._state === BEFORE_SCRIPT_4) {
+            this._stateBeforeScript4(c);
+        } else if (this._state === BEFORE_SCRIPT_5) {
+            this._stateBeforeScript5(c);
+        } else if (this._state === AFTER_SCRIPT_1) {
+            this._stateAfterScript1(c);
+        } else if (this._state === AFTER_SCRIPT_2) {
+            this._stateAfterScript2(c);
+        } else if (this._state === AFTER_SCRIPT_3) {
+            this._stateAfterScript3(c);
+        } else if (this._state === AFTER_SCRIPT_4) {
+            this._stateAfterScript4(c);
+        } else if (this._state === AFTER_SCRIPT_5) {
+            this._stateAfterScript5(c);
+        } else if (this._state === BEFORE_STYLE_1) {
+
+        /*
+		* style
+		*/
+            this._stateBeforeStyle1(c);
+        } else if (this._state === BEFORE_STYLE_2) {
+            this._stateBeforeStyle2(c);
+        } else if (this._state === BEFORE_STYLE_3) {
+            this._stateBeforeStyle3(c);
+        } else if (this._state === BEFORE_STYLE_4) {
+            this._stateBeforeStyle4(c);
+        } else if (this._state === AFTER_STYLE_1) {
+            this._stateAfterStyle1(c);
+        } else if (this._state === AFTER_STYLE_2) {
+            this._stateAfterStyle2(c);
+        } else if (this._state === AFTER_STYLE_3) {
+            this._stateAfterStyle3(c);
+        } else if (this._state === AFTER_STYLE_4) {
+            this._stateAfterStyle4(c);
+        } else if (this._state === BEFORE_ENTITY) {
+
+        /*
+		* entities
+		*/
+            this._stateBeforeEntity(c);
+        } else if (this._state === BEFORE_NUMERIC_ENTITY) {
+            this._stateBeforeNumericEntity(c);
+        } else if (this._state === IN_NAMED_ENTITY) {
+            this._stateInNamedEntity(c);
+        } else if (this._state === IN_NUMERIC_ENTITY) {
+            this._stateInNumericEntity(c);
+        } else if (this._state === IN_HEX_ENTITY) {
+            this._stateInHexEntity(c);
+        } else {
+            this._cbs.onerror(Error("unknown _state"), this._state);
+        }
+
+        this._index++;
+    }
+
+    this._cleanup();
+};
+
+Tokenizer.prototype.pause = function() {
+    this._running = false;
+};
+Tokenizer.prototype.resume = function() {
+    this._running = true;
+
+    if (this._index < this._buffer.length) {
+        this._parse();
+    }
+    if (this._ended) {
+        this._finish();
+    }
+};
+
+Tokenizer.prototype.end = function(chunk) {
+    if (this._ended) this._cbs.onerror(Error(".end() after done!"));
+    if (chunk) this.write(chunk);
+
+    this._ended = true;
+
+    if (this._running) this._finish();
+};
+
+Tokenizer.prototype._finish = function() {
+    //if there is remaining data, emit it in a reasonable way
+    if (this._sectionStart < this._index) {
+        this._handleTrailingData();
+    }
+
+    this._cbs.onend();
+};
+
+Tokenizer.prototype._handleTrailingData = function() {
+    var data = this._buffer.substr(this._sectionStart);
+
+    if (
+        this._state === IN_CDATA ||
+        this._state === AFTER_CDATA_1 ||
+        this._state === AFTER_CDATA_2
+    ) {
+        this._cbs.oncdata(data);
+    } else if (
+        this._state === IN_COMMENT ||
+        this._state === AFTER_COMMENT_1 ||
+        this._state === AFTER_COMMENT_2
+    ) {
+        this._cbs.oncomment(data);
+    } else if (this._state === IN_NAMED_ENTITY && !this._xmlMode) {
+        this._parseLegacyEntity();
+        if (this._sectionStart < this._index) {
+            this._state = this._baseState;
+            this._handleTrailingData();
+        }
+    } else if (this._state === IN_NUMERIC_ENTITY && !this._xmlMode) {
+        this._decodeNumericEntity(2, 10);
+        if (this._sectionStart < this._index) {
+            this._state = this._baseState;
+            this._handleTrailingData();
+        }
+    } else if (this._state === IN_HEX_ENTITY && !this._xmlMode) {
+        this._decodeNumericEntity(3, 16);
+        if (this._sectionStart < this._index) {
+            this._state = this._baseState;
+            this._handleTrailingData();
+        }
+    } else if (
+        this._state !== IN_TAG_NAME &&
+        this._state !== BEFORE_ATTRIBUTE_NAME &&
+        this._state !== BEFORE_ATTRIBUTE_VALUE &&
+        this._state !== AFTER_ATTRIBUTE_NAME &&
+        this._state !== IN_ATTRIBUTE_NAME &&
+        this._state !== IN_ATTRIBUTE_VALUE_SQ &&
+        this._state !== IN_ATTRIBUTE_VALUE_DQ &&
+        this._state !== IN_ATTRIBUTE_VALUE_NQ &&
+        this._state !== IN_CLOSING_TAG_NAME
+    ) {
+        this._cbs.ontext(data);
+    }
+    //else, ignore remaining data
+    //TODO add a way to remove current tag
+};
+
+Tokenizer.prototype.reset = function() {
+    Tokenizer.call(
+        this,
+        { xmlMode: this._xmlMode, decodeEntities: this._decodeEntities },
+        this._cbs
+    );
+};
+
+Tokenizer.prototype.getAbsoluteIndex = function() {
+    return this._bufferOffset + this._index;
+};
+
+Tokenizer.prototype._getSection = function() {
+    return this._buffer.substring(this._sectionStart, this._index);
+};
+
+Tokenizer.prototype._emitToken = function(name) {
+    this._cbs[name](this._getSection());
+    this._sectionStart = -1;
+};
+
+Tokenizer.prototype._emitPartial = function(value) {
+    if (this._baseState !== TEXT) {
+        this._cbs.onattribdata(value); //TODO implement the new event
+    } else {
+        this._cbs.ontext(value);
+    }
+};

nodered/rootfs/data/node_modules/htmlparser2/lib/WritableStream.js

@@ -0,0 +1,25 @@
+module.exports = Stream;
+
+var Parser = require("./Parser.js");
+var WritableStream = require("readable-stream").Writable;
+var StringDecoder = require("string_decoder").StringDecoder;
+var Buffer = require("buffer").Buffer;
+
+function Stream(cbs, options) {
+    var parser = (this._parser = new Parser(cbs, options));
+    var decoder = (this._decoder = new StringDecoder());
+
+    WritableStream.call(this, { decodeStrings: false });
+
+    this.once("finish", function() {
+        parser.end(decoder.end());
+    });
+}
+
+require("inherits")(Stream, WritableStream);
+
+Stream.prototype._write = function(chunk, encoding, cb) {
+    if (chunk instanceof Buffer) chunk = this._decoder.write(chunk);
+    this._parser.write(chunk);
+    cb();
+};

nodered/rootfs/data/node_modules/htmlparser2/lib/index.js

@@ -0,0 +1,72 @@
+var Parser = require("./Parser.js");
+var DomHandler = require("domhandler");
+
+function defineProp(name, value) {
+    delete module.exports[name];
+    module.exports[name] = value;
+    return value;
+}
+
+module.exports = {
+    Parser: Parser,
+    Tokenizer: require("./Tokenizer.js"),
+    ElementType: require("domelementtype"),
+    DomHandler: DomHandler,
+    get FeedHandler() {
+        return defineProp("FeedHandler", require("./FeedHandler.js"));
+    },
+    get Stream() {
+        return defineProp("Stream", require("./Stream.js"));
+    },
+    get WritableStream() {
+        return defineProp("WritableStream", require("./WritableStream.js"));
+    },
+    get ProxyHandler() {
+        return defineProp("ProxyHandler", require("./ProxyHandler.js"));
+    },
+    get DomUtils() {
+        return defineProp("DomUtils", require("domutils"));
+    },
+    get CollectingHandler() {
+        return defineProp(
+            "CollectingHandler",
+            require("./CollectingHandler.js")
+        );
+    },
+    // For legacy support
+    DefaultHandler: DomHandler,
+    get RssHandler() {
+        return defineProp("RssHandler", this.FeedHandler);
+    },
+    //helper methods
+    parseDOM: function(data, options) {
+        var handler = new DomHandler(options);
+        new Parser(handler, options).end(data);
+        return handler.dom;
+    },
+    parseFeed: function(feed, options) {
+        var handler = new module.exports.FeedHandler(options);
+        new Parser(handler, options).end(feed);
+        return handler.dom;
+    },
+    createDomStream: function(cb, options, elementCb) {
+        var handler = new DomHandler(cb, options, elementCb);
+        return new Parser(handler, options);
+    },
+    // List of all events that the parser emits
+    EVENTS: {
+        /* Format: eventname: number of arguments */
+        attribute: 2,
+        cdatastart: 0,
+        cdataend: 0,
+        text: 1,
+        processinginstruction: 2,
+        comment: 1,
+        commentend: 0,
+        closetag: 1,
+        opentag: 2,
+        opentagname: 1,
+        error: 1,
+        end: 0
+    }
+};

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/CONTRIBUTING.md

@@ -0,0 +1,38 @@
+# Developer's Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+* (a) The contribution was created in whole or in part by me and I
+  have the right to submit it under the open source license
+  indicated in the file; or
+
+* (b) The contribution is based upon previous work that, to the best
+  of my knowledge, is covered under an appropriate open source
+  license and I have the right under that license to submit that
+  work with modifications, whether created in whole or in part
+  by me, under the same open source license (unless I am
+  permitted to submit under a different license), as indicated
+  in the file; or
+
+* (c) The contribution was provided directly to me by some other
+  person who certified (a), (b) or (c) and I have not modified
+  it.
+
+* (d) I understand and agree that this project and the contribution
+  are public and that a record of the contribution (including all
+  personal information I submit with it, including my sign-off) is
+  maintained indefinitely and may be redistributed consistent with
+  this project or the open source license(s) involved.
+
+## Moderation Policy
+
+The [Node.js Moderation Policy] applies to this WG.
+
+## Code of Conduct
+
+The [Node.js Code of Conduct][] applies to this WG.
+
+[Node.js Code of Conduct]:
+https://github.com/nodejs/node/blob/master/CODE_OF_CONDUCT.md
+[Node.js Moderation Policy]:
+https://github.com/nodejs/TSC/blob/master/Moderation-Policy.md

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/GOVERNANCE.md

@@ -0,0 +1,136 @@
+### Streams Working Group
+
+The Node.js Streams is jointly governed by a Working Group
+(WG)
+that is responsible for high-level guidance of the project.
+
+The WG has final authority over this project including:
+
+* Technical direction
+* Project governance and process (including this policy)
+* Contribution policy
+* GitHub repository hosting
+* Conduct guidelines
+* Maintaining the list of additional Collaborators
+
+For the current list of WG members, see the project
+[README.md](./README.md#current-project-team-members).
+
+### Collaborators
+
+The readable-stream GitHub repository is
+maintained by the WG and additional Collaborators who are added by the
+WG on an ongoing basis.
+
+Individuals making significant and valuable contributions are made
+Collaborators and given commit-access to the project. These
+individuals are identified by the WG and their addition as
+Collaborators is discussed during the WG meeting.
+
+_Note:_ If you make a significant contribution and are not considered
+for commit-access log an issue or contact a WG member directly and it
+will be brought up in the next WG meeting.
+
+Modifications of the contents of the readable-stream repository are
+made on
+a collaborative basis. Anybody with a GitHub account may propose a
+modification via pull request and it will be considered by the project
+Collaborators. All pull requests must be reviewed and accepted by a
+Collaborator with sufficient expertise who is able to take full
+responsibility for the change. In the case of pull requests proposed
+by an existing Collaborator, an additional Collaborator is required
+for sign-off. Consensus should be sought if additional Collaborators
+participate and there is disagreement around a particular
+modification. See _Consensus Seeking Process_ below for further detail
+on the consensus model used for governance.
+
+Collaborators may opt to elevate significant or controversial
+modifications, or modifications that have not found consensus to the
+WG for discussion by assigning the ***WG-agenda*** tag to a pull
+request or issue. The WG should serve as the final arbiter where
+required.
+
+For the current list of Collaborators, see the project
+[README.md](./README.md#members).
+
+### WG Membership
+
+WG seats are not time-limited.  There is no fixed size of the WG.
+However, the expected target is between 6 and 12, to ensure adequate
+coverage of important areas of expertise, balanced with the ability to
+make decisions efficiently.
+
+There is no specific set of requirements or qualifications for WG
+membership beyond these rules.
+
+The WG may add additional members to the WG by unanimous consensus.
+
+A WG member may be removed from the WG by voluntary resignation, or by
+unanimous consensus of all other WG members.
+
+Changes to WG membership should be posted in the agenda, and may be
+suggested as any other agenda item (see "WG Meetings" below).
+
+If an addition or removal is proposed during a meeting, and the full
+WG is not in attendance to participate, then the addition or removal
+is added to the agenda for the subsequent meeting.  This is to ensure
+that all members are given the opportunity to participate in all
+membership decisions.  If a WG member is unable to attend a meeting
+where a planned membership decision is being made, then their consent
+is assumed.
+
+No more than 1/3 of the WG members may be affiliated with the same
+employer.  If removal or resignation of a WG member, or a change of
+employment by a WG member, creates a situation where more than 1/3 of
+the WG membership shares an employer, then the situation must be
+immediately remedied by the resignation or removal of one or more WG
+members affiliated with the over-represented employer(s).
+
+### WG Meetings
+
+The WG meets occasionally on a Google Hangout On Air. A designated moderator
+approved by the WG runs the meeting. Each meeting should be
+published to YouTube.
+
+Items are added to the WG agenda that are considered contentious or
+are modifications of governance, contribution policy, WG membership,
+or release process.
+
+The intention of the agenda is not to approve or review all patches;
+that should happen continuously on GitHub and be handled by the larger
+group of Collaborators.
+
+Any community member or contributor can ask that something be added to
+the next meeting's agenda by logging a GitHub Issue. Any Collaborator,
+WG member or the moderator can add the item to the agenda by adding
+the ***WG-agenda*** tag to the issue.
+
+Prior to each WG meeting the moderator will share the Agenda with
+members of the WG. WG members can add any items they like to the
+agenda at the beginning of each meeting. The moderator and the WG
+cannot veto or remove items.
+
+The WG may invite persons or representatives from certain projects to
+participate in a non-voting capacity.
+
+The moderator is responsible for summarizing the discussion of each
+agenda item and sends it as a pull request after the meeting.
+
+### Consensus Seeking Process
+
+The WG follows a
+[Consensus
+Seeking](http://en.wikipedia.org/wiki/Consensus-seeking_decision-making)
+decision-making model.
+
+When an agenda item has appeared to reach a consensus the moderator
+will ask "Does anyone object?" as a final call for dissent from the
+consensus.
+
+If an agenda item cannot reach a consensus a WG member can call for
+either a closing vote or a vote to table the issue to the next
+meeting. The call for a vote must be seconded by a majority of the WG
+or else the discussion will continue. Simple majority wins.
+
+Note that changes to WG membership require a majority consensus.  See
+"WG Membership" above.

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/LICENSE

@@ -0,0 +1,47 @@
+Node.js is licensed for use as follows:
+
+"""
+Copyright Node.js contributors. All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to
+deal in the Software without restriction, including without limitation the
+rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+sell copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+IN THE SOFTWARE.
+"""
+
+This license applies to parts of Node.js originating from the
+https://github.com/joyent/node repository:
+
+"""
+Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to
+deal in the Software without restriction, including without limitation the
+rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+sell copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+IN THE SOFTWARE.
+"""

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/README.md

@@ -0,0 +1,111 @@
+# readable-stream
+
+***Node.js core streams for userland*** [![Build Status](https://travis-ci.com/nodejs/readable-stream.svg?branch=master)](https://travis-ci.com/nodejs/readable-stream)
+
+
+[![NPM](https://nodei.co/npm/readable-stream.png?downloads=true&downloadRank=true)](https://nodei.co/npm/readable-stream/)
+[![NPM](https://nodei.co/npm-dl/readable-stream.png?&months=6&height=3)](https://nodei.co/npm/readable-stream/)
+
+
+[![Sauce Test Status](https://saucelabs.com/browser-matrix/readabe-stream.svg)](https://saucelabs.com/u/readabe-stream)
+
+```bash
+npm install --save readable-stream
+```
+
+This package is a mirror of the streams implementations in Node.js.
+
+Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v10.15.3/docs/api/stream.html).
+
+If you want to guarantee a stable streams base, regardless of what version of
+Node you, or the users of your libraries are using, use **readable-stream** *only* and avoid the *"stream"* module in Node-core, for background see [this blogpost](http://r.va.gg/2014/06/why-i-dont-use-nodes-core-stream-module.html).
+
+As of version 2.0.0 **readable-stream** uses semantic versioning.
+
+## Version 3.x.x
+
+v3.x.x of `readable-stream` supports Node 6, 8, and 10, as well as
+evergreen browsers, IE 11 and latest Safari. The breaking changes
+introduced by v3 are composed by the combined breaking changes in [Node v9](https://nodejs.org/en/blog/release/v9.0.0/)
+and [Node v10](https://nodejs.org/en/blog/release/v10.0.0/), as follows:
+
+1. Error codes: https://github.com/nodejs/node/pull/13310,
+   https://github.com/nodejs/node/pull/13291,
+   https://github.com/nodejs/node/pull/16589,
+   https://github.com/nodejs/node/pull/15042,
+   https://github.com/nodejs/node/pull/15665,
+   https://github.com/nodejs/readable-stream/pull/344
+2. 'readable' have precedence over flowing
+   https://github.com/nodejs/node/pull/18994
+3. make virtual methods errors consistent
+   https://github.com/nodejs/node/pull/18813
+4. updated streams error handling
+   https://github.com/nodejs/node/pull/18438
+5. writable.end should return this.
+   https://github.com/nodejs/node/pull/18780
+6. readable continues to read when push('')
+   https://github.com/nodejs/node/pull/18211
+7. add custom inspect to BufferList
+   https://github.com/nodejs/node/pull/17907
+8. always defer 'readable' with nextTick
+   https://github.com/nodejs/node/pull/17979
+
+## Version 2.x.x
+
+v2.x.x of `readable-stream` supports all Node.js version from 0.8, as well as
+evergreen browsers and IE 10 & 11.
+
+### Big Thanks
+
+Cross-browser Testing Platform and Open Source <3 Provided by [Sauce Labs][sauce]
+
+# Usage
+
+You can swap your `require('stream')` with `require('readable-stream')`
+without any changes, if you are just using one of the main classes and
+functions.
+
+```js
+const {
+  Readable,
+  Writable,
+  Transform,
+  Duplex,
+  pipeline,
+  finished
+} = require('readable-stream')
+````
+
+Note that `require('stream')` will return `Stream`, while
+`require('readable-stream')` will return `Readable`. We discourage using
+whatever is exported directly, but rather use one of the properties as
+shown in the example above.
+
+# Streams Working Group
+
+`readable-stream` is maintained by the Streams Working Group, which
+oversees the development and maintenance of the Streams API within
+Node.js. The responsibilities of the Streams Working Group include:
+
+* Addressing stream issues on the Node.js issue tracker.
+* Authoring and editing stream documentation within the Node.js project.
+* Reviewing changes to stream subclasses within the Node.js project.
+* Redirecting changes to streams from the Node.js project to this
+  project.
+* Assisting in the implementation of stream providers within Node.js.
+* Recommending versions of `readable-stream` to be included in Node.js.
+* Messaging about the future of streams to give the community advance
+  notice of changes.
+
+<a name="members"></a>
+## Team Members
+
+* **Calvin Metcalf** ([@calvinmetcalf](https://github.com/calvinmetcalf)) &lt;calvin.metcalf@gmail.com&gt;
+  - Release GPG key: F3EF5F62A87FC27A22E643F714CE4FF5015AA242
+* **Mathias Buus** ([@mafintosh](https://github.com/mafintosh)) &lt;mathiasbuus@gmail.com&gt;
+* **Matteo Collina** ([@mcollina](https://github.com/mcollina)) &lt;matteo.collina@gmail.com&gt;
+  - Release GPG key: 3ABC01543F22DD2239285CDD818674489FBC127E
+* **Irina Shestak** ([@lrlna](https://github.com/lrlna)) &lt;shestak.irina@gmail.com&gt;
+* **Yoshua Wyuts** ([@yoshuawuyts](https://github.com/yoshuawuyts)) &lt;yoshuawuyts@gmail.com&gt;
+
+[sauce]: https://saucelabs.com

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/errors-browser.js

@@ -0,0 +1,127 @@
+'use strict';
+
+function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; }
+
+var codes = {};
+
+function createErrorType(code, message, Base) {
+  if (!Base) {
+    Base = Error;
+  }
+
+  function getMessage(arg1, arg2, arg3) {
+    if (typeof message === 'string') {
+      return message;
+    } else {
+      return message(arg1, arg2, arg3);
+    }
+  }
+
+  var NodeError =
+  /*#__PURE__*/
+  function (_Base) {
+    _inheritsLoose(NodeError, _Base);
+
+    function NodeError(arg1, arg2, arg3) {
+      return _Base.call(this, getMessage(arg1, arg2, arg3)) || this;
+    }
+
+    return NodeError;
+  }(Base);
+
+  NodeError.prototype.name = Base.name;
+  NodeError.prototype.code = code;
+  codes[code] = NodeError;
+} // https://github.com/nodejs/node/blob/v10.8.0/lib/internal/errors.js
+
+
+function oneOf(expected, thing) {
+  if (Array.isArray(expected)) {
+    var len = expected.length;
+    expected = expected.map(function (i) {
+      return String(i);
+    });
+
+    if (len > 2) {
+      return "one of ".concat(thing, " ").concat(expected.slice(0, len - 1).join(', '), ", or ") + expected[len - 1];
+    } else if (len === 2) {
+      return "one of ".concat(thing, " ").concat(expected[0], " or ").concat(expected[1]);
+    } else {
+      return "of ".concat(thing, " ").concat(expected[0]);
+    }
+  } else {
+    return "of ".concat(thing, " ").concat(String(expected));
+  }
+} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith
+
+
+function startsWith(str, search, pos) {
+  return str.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search;
+} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith
+
+
+function endsWith(str, search, this_len) {
+  if (this_len === undefined || this_len > str.length) {
+    this_len = str.length;
+  }
+
+  return str.substring(this_len - search.length, this_len) === search;
+} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes
+
+
+function includes(str, search, start) {
+  if (typeof start !== 'number') {
+    start = 0;
+  }
+
+  if (start + search.length > str.length) {
+    return false;
+  } else {
+    return str.indexOf(search, start) !== -1;
+  }
+}
+
+createErrorType('ERR_INVALID_OPT_VALUE', function (name, value) {
+  return 'The value "' + value + '" is invalid for option "' + name + '"';
+}, TypeError);
+createErrorType('ERR_INVALID_ARG_TYPE', function (name, expected, actual) {
+  // determiner: 'must be' or 'must not be'
+  var determiner;
+
+  if (typeof expected === 'string' && startsWith(expected, 'not ')) {
+    determiner = 'must not be';
+    expected = expected.replace(/^not /, '');
+  } else {
+    determiner = 'must be';
+  }
+
+  var msg;
+
+  if (endsWith(name, ' argument')) {
+    // For cases like 'first argument'
+    msg = "The ".concat(name, " ").concat(determiner, " ").concat(oneOf(expected, 'type'));
+  } else {
+    var type = includes(name, '.') ? 'property' : 'argument';
+    msg = "The \"".concat(name, "\" ").concat(type, " ").concat(determiner, " ").concat(oneOf(expected, 'type'));
+  }
+
+  msg += ". Received type ".concat(typeof actual);
+  return msg;
+}, TypeError);
+createErrorType('ERR_STREAM_PUSH_AFTER_EOF', 'stream.push() after EOF');
+createErrorType('ERR_METHOD_NOT_IMPLEMENTED', function (name) {
+  return 'The ' + name + ' method is not implemented';
+});
+createErrorType('ERR_STREAM_PREMATURE_CLOSE', 'Premature close');
+createErrorType('ERR_STREAM_DESTROYED', function (name) {
+  return 'Cannot call ' + name + ' after a stream was destroyed';
+});
+createErrorType('ERR_MULTIPLE_CALLBACK', 'Callback called multiple times');
+createErrorType('ERR_STREAM_CANNOT_PIPE', 'Cannot pipe, not readable');
+createErrorType('ERR_STREAM_WRITE_AFTER_END', 'write after end');
+createErrorType('ERR_STREAM_NULL_VALUES', 'May not write null values to stream', TypeError);
+createErrorType('ERR_UNKNOWN_ENCODING', function (arg) {
+  return 'Unknown encoding: ' + arg;
+}, TypeError);
+createErrorType('ERR_STREAM_UNSHIFT_AFTER_END_EVENT', 'stream.unshift() after end event');
+module.exports.codes = codes;

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/errors.js

@@ -0,0 +1,116 @@
+'use strict';
+
+const codes = {};
+
+function createErrorType(code, message, Base) {
+  if (!Base) {
+    Base = Error
+  }
+
+  function getMessage (arg1, arg2, arg3) {
+    if (typeof message === 'string') {
+      return message
+    } else {
+      return message(arg1, arg2, arg3)
+    }
+  }
+
+  class NodeError extends Base {
+    constructor (arg1, arg2, arg3) {
+      super(getMessage(arg1, arg2, arg3));
+    }
+  }
+
+  NodeError.prototype.name = Base.name;
+  NodeError.prototype.code = code;
+
+  codes[code] = NodeError;
+}
+
+// https://github.com/nodejs/node/blob/v10.8.0/lib/internal/errors.js
+function oneOf(expected, thing) {
+  if (Array.isArray(expected)) {
+    const len = expected.length;
+    expected = expected.map((i) => String(i));
+    if (len > 2) {
+      return `one of ${thing} ${expected.slice(0, len - 1).join(', ')}, or ` +
+             expected[len - 1];
+    } else if (len === 2) {
+      return `one of ${thing} ${expected[0]} or ${expected[1]}`;
+    } else {
+      return `of ${thing} ${expected[0]}`;
+    }
+  } else {
+    return `of ${thing} ${String(expected)}`;
+  }
+}
+
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith
+function startsWith(str, search, pos) {
+	return str.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search;
+}
+
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith
+function endsWith(str, search, this_len) {
+	if (this_len === undefined || this_len > str.length) {
+		this_len = str.length;
+	}
+	return str.substring(this_len - search.length, this_len) === search;
+}
+
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes
+function includes(str, search, start) {
+  if (typeof start !== 'number') {
+    start = 0;
+  }
+
+  if (start + search.length > str.length) {
+    return false;
+  } else {
+    return str.indexOf(search, start) !== -1;
+  }
+}
+
+createErrorType('ERR_INVALID_OPT_VALUE', function (name, value) {
+  return 'The value "' + value + '" is invalid for option "' + name + '"'
+}, TypeError);
+createErrorType('ERR_INVALID_ARG_TYPE', function (name, expected, actual) {
+  // determiner: 'must be' or 'must not be'
+  let determiner;
+  if (typeof expected === 'string' && startsWith(expected, 'not ')) {
+    determiner = 'must not be';
+    expected = expected.replace(/^not /, '');
+  } else {
+    determiner = 'must be';
+  }
+
+  let msg;
+  if (endsWith(name, ' argument')) {
+    // For cases like 'first argument'
+    msg = `The ${name} ${determiner} ${oneOf(expected, 'type')}`;
+  } else {
+    const type = includes(name, '.') ? 'property' : 'argument';
+    msg = `The "${name}" ${type} ${determiner} ${oneOf(expected, 'type')}`;
+  }
+
+  msg += `. Received type ${typeof actual}`;
+  return msg;
+}, TypeError);
+createErrorType('ERR_STREAM_PUSH_AFTER_EOF', 'stream.push() after EOF');
+createErrorType('ERR_METHOD_NOT_IMPLEMENTED', function (name) {
+  return 'The ' + name + ' method is not implemented'
+});
+createErrorType('ERR_STREAM_PREMATURE_CLOSE', 'Premature close');
+createErrorType('ERR_STREAM_DESTROYED', function (name) {
+  return 'Cannot call ' + name + ' after a stream was destroyed';
+});
+createErrorType('ERR_MULTIPLE_CALLBACK', 'Callback called multiple times');
+createErrorType('ERR_STREAM_CANNOT_PIPE', 'Cannot pipe, not readable');
+createErrorType('ERR_STREAM_WRITE_AFTER_END', 'write after end');
+createErrorType('ERR_STREAM_NULL_VALUES', 'May not write null values to stream', TypeError);
+createErrorType('ERR_UNKNOWN_ENCODING', function (arg) {
+  return 'Unknown encoding: ' + arg
+}, TypeError);
+createErrorType('ERR_STREAM_UNSHIFT_AFTER_END_EVENT', 'stream.unshift() after end event');
+
+module.exports.codes = codes;

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/experimentalWarning.js

@@ -0,0 +1,17 @@
+'use strict'
+
+var experimentalWarnings = new Set();
+
+function emitExperimentalWarning(feature) {
+  if (experimentalWarnings.has(feature)) return;
+  var msg = feature + ' is an experimental feature. This feature could ' +
+       'change at any time';
+  experimentalWarnings.add(feature);
+  process.emitWarning(msg, 'ExperimentalWarning');
+}
+
+function noop() {}
+
+module.exports.emitExperimentalWarning = process.emitWarning
+  ? emitExperimentalWarning
+  : noop;

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/lib/_stream_duplex.js

@@ -0,0 +1,139 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+// a duplex stream is just a stream that is both readable and writable.
+// Since JS doesn't have multiple prototypal inheritance, this class
+// prototypally inherits from Readable, and then parasitically from
+// Writable.
+'use strict';
+/*<replacement>*/
+
+var objectKeys = Object.keys || function (obj) {
+  var keys = [];
+
+  for (var key in obj) {
+    keys.push(key);
+  }
+
+  return keys;
+};
+/*</replacement>*/
+
+
+module.exports = Duplex;
+
+var Readable = require('./_stream_readable');
+
+var Writable = require('./_stream_writable');
+
+require('inherits')(Duplex, Readable);
+
+{
+  // Allow the keys array to be GC'ed.
+  var keys = objectKeys(Writable.prototype);
+
+  for (var v = 0; v < keys.length; v++) {
+    var method = keys[v];
+    if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
+  }
+}
+
+function Duplex(options) {
+  if (!(this instanceof Duplex)) return new Duplex(options);
+  Readable.call(this, options);
+  Writable.call(this, options);
+  this.allowHalfOpen = true;
+
+  if (options) {
+    if (options.readable === false) this.readable = false;
+    if (options.writable === false) this.writable = false;
+
+    if (options.allowHalfOpen === false) {
+      this.allowHalfOpen = false;
+      this.once('end', onend);
+    }
+  }
+}
+
+Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function get() {
+    return this._writableState.highWaterMark;
+  }
+});
+Object.defineProperty(Duplex.prototype, 'writableBuffer', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function get() {
+    return this._writableState && this._writableState.getBuffer();
+  }
+});
+Object.defineProperty(Duplex.prototype, 'writableLength', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function get() {
+    return this._writableState.length;
+  }
+}); // the no-half-open enforcer
+
+function onend() {
+  // If the writable side ended, then we're ok.
+  if (this._writableState.ended) return; // no more data can be written.
+  // But allow more writes to happen in this tick.
+
+  process.nextTick(onEndNT, this);
+}
+
+function onEndNT(self) {
+  self.end();
+}
+
+Object.defineProperty(Duplex.prototype, 'destroyed', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function get() {
+    if (this._readableState === undefined || this._writableState === undefined) {
+      return false;
+    }
+
+    return this._readableState.destroyed && this._writableState.destroyed;
+  },
+  set: function set(value) {
+    // we ignore the value if the stream
+    // has not been initialized yet
+    if (this._readableState === undefined || this._writableState === undefined) {
+      return;
+    } // backward compatibility, the user is explicitly
+    // managing destroyed
+
+
+    this._readableState.destroyed = value;
+    this._writableState.destroyed = value;
+  }
+});

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/lib/_stream_passthrough.js

@@ -0,0 +1,39 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+// a passthrough stream.
+// basically just the most minimal sort of Transform stream.
+// Every written chunk gets output as-is.
+'use strict';
+
+module.exports = PassThrough;
+
+var Transform = require('./_stream_transform');
+
+require('inherits')(PassThrough, Transform);
+
+function PassThrough(options) {
+  if (!(this instanceof PassThrough)) return new PassThrough(options);
+  Transform.call(this, options);
+}
+
+PassThrough.prototype._transform = function (chunk, encoding, cb) {
+  cb(null, chunk);
+};

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/lib/_stream_readable.js

@@ -0,0 +1,1087 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+'use strict';
+
+module.exports = Readable;
+/*<replacement>*/
+
+var Duplex;
+/*</replacement>*/
+
+Readable.ReadableState = ReadableState;
+/*<replacement>*/
+
+var EE = require('events').EventEmitter;
+
+var EElistenerCount = function EElistenerCount(emitter, type) {
+  return emitter.listeners(type).length;
+};
+/*</replacement>*/
+
+/*<replacement>*/
+
+
+var Stream = require('./internal/streams/stream');
+/*</replacement>*/
+
+
+var Buffer = require('buffer').Buffer;
+
+var OurUint8Array = global.Uint8Array || function () {};
+
+function _uint8ArrayToBuffer(chunk) {
+  return Buffer.from(chunk);
+}
+
+function _isUint8Array(obj) {
+  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
+}
+/*<replacement>*/
+
+
+var debugUtil = require('util');
+
+var debug;
+
+if (debugUtil && debugUtil.debuglog) {
+  debug = debugUtil.debuglog('stream');
+} else {
+  debug = function debug() {};
+}
+/*</replacement>*/
+
+
+var BufferList = require('./internal/streams/buffer_list');
+
+var destroyImpl = require('./internal/streams/destroy');
+
+var _require = require('./internal/streams/state'),
+    getHighWaterMark = _require.getHighWaterMark;
+
+var _require$codes = require('../errors').codes,
+    ERR_INVALID_ARG_TYPE = _require$codes.ERR_INVALID_ARG_TYPE,
+    ERR_STREAM_PUSH_AFTER_EOF = _require$codes.ERR_STREAM_PUSH_AFTER_EOF,
+    ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
+    ERR_STREAM_UNSHIFT_AFTER_END_EVENT = _require$codes.ERR_STREAM_UNSHIFT_AFTER_END_EVENT;
+
+var _require2 = require('../experimentalWarning'),
+    emitExperimentalWarning = _require2.emitExperimentalWarning; // Lazy loaded to improve the startup performance.
+
+
+var StringDecoder;
+var createReadableStreamAsyncIterator;
+
+require('inherits')(Readable, Stream);
+
+var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];
+
+function prependListener(emitter, event, fn) {
+  // Sadly this is not cacheable as some libraries bundle their own
+  // event emitter implementation with them.
+  if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn); // This is a hack to make sure that our error handler is attached before any
+  // userland ones.  NEVER DO THIS. This is here only because this code needs
+  // to continue to work with older versions of Node.js that do not include
+  // the prependListener() method. The goal is to eventually remove this hack.
+
+  if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (Array.isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
+}
+
+function ReadableState(options, stream, isDuplex) {
+  Duplex = Duplex || require('./_stream_duplex');
+  options = options || {}; // Duplex streams are both readable and writable, but share
+  // the same options object.
+  // However, some cases require setting options to different
+  // values for the readable and the writable sides of the duplex stream.
+  // These options can be provided separately as readableXXX and writableXXX.
+
+  if (typeof isDuplex !== 'boolean') isDuplex = stream instanceof Duplex; // object stream flag. Used to make read(n) ignore n and to
+  // make all the buffer merging and length checks go away
+
+  this.objectMode = !!options.objectMode;
+  if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode; // the point at which it stops calling _read() to fill the buffer
+  // Note: 0 is a valid value, means "don't call _read preemptively ever"
+
+  this.highWaterMark = getHighWaterMark(this, options, 'readableHighWaterMark', isDuplex); // A linked list is used to store data chunks instead of an array because the
+  // linked list can remove elements from the beginning faster than
+  // array.shift()
+
+  this.buffer = new BufferList();
+  this.length = 0;
+  this.pipes = null;
+  this.pipesCount = 0;
+  this.flowing = null;
+  this.ended = false;
+  this.endEmitted = false;
+  this.reading = false; // a flag to be able to tell if the event 'readable'/'data' is emitted
+  // immediately, or on a later tick.  We set this to true at first, because
+  // any actions that shouldn't happen until "later" should generally also
+  // not happen before the first read call.
+
+  this.sync = true; // whenever we return null, then we set a flag to say
+  // that we're awaiting a 'readable' event emission.
+
+  this.needReadable = false;
+  this.emittedReadable = false;
+  this.readableListening = false;
+  this.resumeScheduled = false;
+  this.paused = true; // Should close be emitted on destroy. Defaults to true.
+
+  this.emitClose = options.emitClose !== false; // has it been destroyed
+
+  this.destroyed = false; // Crypto is kind of old and crusty.  Historically, its default string
+  // encoding is 'binary' so we have to make this configurable.
+  // Everything else in the universe uses 'utf8', though.
+
+  this.defaultEncoding = options.defaultEncoding || 'utf8'; // the number of writers that are awaiting a drain event in .pipe()s
+
+  this.awaitDrain = 0; // if true, a maybeReadMore has been scheduled
+
+  this.readingMore = false;
+  this.decoder = null;
+  this.encoding = null;
+
+  if (options.encoding) {
+    if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
+    this.decoder = new StringDecoder(options.encoding);
+    this.encoding = options.encoding;
+  }
+}
+
+function Readable(options) {
+  Duplex = Duplex || require('./_stream_duplex');
+  if (!(this instanceof Readable)) return new Readable(options); // Checking for a Stream.Duplex instance is faster here instead of inside
+  // the ReadableState constructor, at least with V8 6.5
+
+  var isDuplex = this instanceof Duplex;
+  this._readableState = new ReadableState(options, this, isDuplex); // legacy
+
+  this.readable = true;
+
+  if (options) {
+    if (typeof options.read === 'function') this._read = options.read;
+    if (typeof options.destroy === 'function') this._destroy = options.destroy;
+  }
+
+  Stream.call(this);
+}
+
+Object.defineProperty(Readable.prototype, 'destroyed', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function get() {
+    if (this._readableState === undefined) {
+      return false;
+    }
+
+    return this._readableState.destroyed;
+  },
+  set: function set(value) {
+    // we ignore the value if the stream
+    // has not been initialized yet
+    if (!this._readableState) {
+      return;
+    } // backward compatibility, the user is explicitly
+    // managing destroyed
+
+
+    this._readableState.destroyed = value;
+  }
+});
+Readable.prototype.destroy = destroyImpl.destroy;
+Readable.prototype._undestroy = destroyImpl.undestroy;
+
+Readable.prototype._destroy = function (err, cb) {
+  cb(err);
+}; // Manually shove something into the read() buffer.
+// This returns true if the highWaterMark has not been hit yet,
+// similar to how Writable.write() returns true if you should
+// write() some more.
+
+
+Readable.prototype.push = function (chunk, encoding) {
+  var state = this._readableState;
+  var skipChunkCheck;
+
+  if (!state.objectMode) {
+    if (typeof chunk === 'string') {
+      encoding = encoding || state.defaultEncoding;
+
+      if (encoding !== state.encoding) {
+        chunk = Buffer.from(chunk, encoding);
+        encoding = '';
+      }
+
+      skipChunkCheck = true;
+    }
+  } else {
+    skipChunkCheck = true;
+  }
+
+  return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
+}; // Unshift should *always* be something directly out of read()
+
+
+Readable.prototype.unshift = function (chunk) {
+  return readableAddChunk(this, chunk, null, true, false);
+};
+
+function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
+  debug('readableAddChunk', chunk);
+  var state = stream._readableState;
+
+  if (chunk === null) {
+    state.reading = false;
+    onEofChunk(stream, state);
+  } else {
+    var er;
+    if (!skipChunkCheck) er = chunkInvalid(state, chunk);
+
+    if (er) {
+      stream.emit('error', er);
+    } else if (state.objectMode || chunk && chunk.length > 0) {
+      if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
+        chunk = _uint8ArrayToBuffer(chunk);
+      }
+
+      if (addToFront) {
+        if (state.endEmitted) stream.emit('error', new ERR_STREAM_UNSHIFT_AFTER_END_EVENT());else addChunk(stream, state, chunk, true);
+      } else if (state.ended) {
+        stream.emit('error', new ERR_STREAM_PUSH_AFTER_EOF());
+      } else if (state.destroyed) {
+        return false;
+      } else {
+        state.reading = false;
+
+        if (state.decoder && !encoding) {
+          chunk = state.decoder.write(chunk);
+          if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
+        } else {
+          addChunk(stream, state, chunk, false);
+        }
+      }
+    } else if (!addToFront) {
+      state.reading = false;
+      maybeReadMore(stream, state);
+    }
+  } // We can push more data if we are below the highWaterMark.
+  // Also, if we have no data yet, we can stand some more bytes.
+  // This is to work around cases where hwm=0, such as the repl.
+
+
+  return !state.ended && (state.length < state.highWaterMark || state.length === 0);
+}
+
+function addChunk(stream, state, chunk, addToFront) {
+  if (state.flowing && state.length === 0 && !state.sync) {
+    state.awaitDrain = 0;
+    stream.emit('data', chunk);
+  } else {
+    // update the buffer info.
+    state.length += state.objectMode ? 1 : chunk.length;
+    if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);
+    if (state.needReadable) emitReadable(stream);
+  }
+
+  maybeReadMore(stream, state);
+}
+
+function chunkInvalid(state, chunk) {
+  var er;
+
+  if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
+    er = new ERR_INVALID_ARG_TYPE('chunk', ['string', 'Buffer', 'Uint8Array'], chunk);
+  }
+
+  return er;
+}
+
+Readable.prototype.isPaused = function () {
+  return this._readableState.flowing === false;
+}; // backwards compatibility.
+
+
+Readable.prototype.setEncoding = function (enc) {
+  if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
+  this._readableState.decoder = new StringDecoder(enc); // if setEncoding(null), decoder.encoding equals utf8
+
+  this._readableState.encoding = this._readableState.decoder.encoding;
+  return this;
+}; // Don't raise the hwm > 8MB
+
+
+var MAX_HWM = 0x800000;
+
+function computeNewHighWaterMark(n) {
+  if (n >= MAX_HWM) {
+    n = MAX_HWM;
+  } else {
+    // Get the next highest power of 2 to prevent increasing hwm excessively in
+    // tiny amounts
+    n--;
+    n |= n >>> 1;
+    n |= n >>> 2;
+    n |= n >>> 4;
+    n |= n >>> 8;
+    n |= n >>> 16;
+    n++;
+  }
+
+  return n;
+} // This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+
+
+function howMuchToRead(n, state) {
+  if (n <= 0 || state.length === 0 && state.ended) return 0;
+  if (state.objectMode) return 1;
+
+  if (n !== n) {
+    // Only flow one buffer at a time
+    if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
+  } // If we're asking for more than the current hwm, then raise the hwm.
+
+
+  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
+  if (n <= state.length) return n; // Don't have enough
+
+  if (!state.ended) {
+    state.needReadable = true;
+    return 0;
+  }
+
+  return state.length;
+} // you can override either this method, or the async _read(n) below.
+
+
+Readable.prototype.read = function (n) {
+  debug('read', n);
+  n = parseInt(n, 10);
+  var state = this._readableState;
+  var nOrig = n;
+  if (n !== 0) state.emittedReadable = false; // if we're doing read(0) to trigger a readable event, but we
+  // already have a bunch of data in the buffer, then just trigger
+  // the 'readable' event and move on.
+
+  if (n === 0 && state.needReadable && ((state.highWaterMark !== 0 ? state.length >= state.highWaterMark : state.length > 0) || state.ended)) {
+    debug('read: emitReadable', state.length, state.ended);
+    if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
+    return null;
+  }
+
+  n = howMuchToRead(n, state); // if we've ended, and we're now clear, then finish it up.
+
+  if (n === 0 && state.ended) {
+    if (state.length === 0) endReadable(this);
+    return null;
+  } // All the actual chunk generation logic needs to be
+  // *below* the call to _read.  The reason is that in certain
+  // synthetic stream cases, such as passthrough streams, _read
+  // may be a completely synchronous operation which may change
+  // the state of the read buffer, providing enough data when
+  // before there was *not* enough.
+  //
+  // So, the steps are:
+  // 1. Figure out what the state of things will be after we do
+  // a read from the buffer.
+  //
+  // 2. If that resulting state will trigger a _read, then call _read.
+  // Note that this may be asynchronous, or synchronous.  Yes, it is
+  // deeply ugly to write APIs this way, but that still doesn't mean
+  // that the Readable class should behave improperly, as streams are
+  // designed to be sync/async agnostic.
+  // Take note if the _read call is sync or async (ie, if the read call
+  // has returned yet), so that we know whether or not it's safe to emit
+  // 'readable' etc.
+  //
+  // 3. Actually pull the requested chunks out of the buffer and return.
+  // if we need a readable event, then we need to do some reading.
+
+
+  var doRead = state.needReadable;
+  debug('need readable', doRead); // if we currently have less than the highWaterMark, then also read some
+
+  if (state.length === 0 || state.length - n < state.highWaterMark) {
+    doRead = true;
+    debug('length less than watermark', doRead);
+  } // however, if we've ended, then there's no point, and if we're already
+  // reading, then it's unnecessary.
+
+
+  if (state.ended || state.reading) {
+    doRead = false;
+    debug('reading or ended', doRead);
+  } else if (doRead) {
+    debug('do read');
+    state.reading = true;
+    state.sync = true; // if the length is currently zero, then we *need* a readable event.
+
+    if (state.length === 0) state.needReadable = true; // call internal read method
+
+    this._read(state.highWaterMark);
+
+    state.sync = false; // If _read pushed data synchronously, then `reading` will be false,
+    // and we need to re-evaluate how much data we can return to the user.
+
+    if (!state.reading) n = howMuchToRead(nOrig, state);
+  }
+
+  var ret;
+  if (n > 0) ret = fromList(n, state);else ret = null;
+
+  if (ret === null) {
+    state.needReadable = true;
+    n = 0;
+  } else {
+    state.length -= n;
+    state.awaitDrain = 0;
+  }
+
+  if (state.length === 0) {
+    // If we have nothing in the buffer, then we want to know
+    // as soon as we *do* get something into the buffer.
+    if (!state.ended) state.needReadable = true; // If we tried to read() past the EOF, then emit end on the next tick.
+
+    if (nOrig !== n && state.ended) endReadable(this);
+  }
+
+  if (ret !== null) this.emit('data', ret);
+  return ret;
+};
+
+function onEofChunk(stream, state) {
+  if (state.ended) return;
+
+  if (state.decoder) {
+    var chunk = state.decoder.end();
+
+    if (chunk && chunk.length) {
+      state.buffer.push(chunk);
+      state.length += state.objectMode ? 1 : chunk.length;
+    }
+  }
+
+  state.ended = true;
+
+  if (state.sync) {
+    // if we are sync, wait until next tick to emit the data.
+    // Otherwise we risk emitting data in the flow()
+    // the readable code triggers during a read() call
+    emitReadable(stream);
+  } else {
+    // emit 'readable' now to make sure it gets picked up.
+    state.needReadable = false;
+
+    if (!state.emittedReadable) {
+      state.emittedReadable = true;
+      emitReadable_(stream);
+    }
+  }
+} // Don't emit readable right away in sync mode, because this can trigger
+// another read() call => stack overflow.  This way, it might trigger
+// a nextTick recursion warning, but that's not so bad.
+
+
+function emitReadable(stream) {
+  var state = stream._readableState;
+  state.needReadable = false;
+
+  if (!state.emittedReadable) {
+    debug('emitReadable', state.flowing);
+    state.emittedReadable = true;
+    process.nextTick(emitReadable_, stream);
+  }
+}
+
+function emitReadable_(stream) {
+  var state = stream._readableState;
+  debug('emitReadable_', state.destroyed, state.length, state.ended);
+
+  if (!state.destroyed && (state.length || state.ended)) {
+    stream.emit('readable');
+  } // The stream needs another readable event if
+  // 1. It is not flowing, as the flow mechanism will take
+  //    care of it.
+  // 2. It is not ended.
+  // 3. It is below the highWaterMark, so we can schedule
+  //    another readable later.
+
+
+  state.needReadable = !state.flowing && !state.ended && state.length <= state.highWaterMark;
+  flow(stream);
+} // at this point, the user has presumably seen the 'readable' event,
+// and called read() to consume some data.  that may have triggered
+// in turn another _read(n) call, in which case reading = true if
+// it's in progress.
+// However, if we're not ended, or reading, and the length < hwm,
+// then go ahead and try to read some more preemptively.
+
+
+function maybeReadMore(stream, state) {
+  if (!state.readingMore) {
+    state.readingMore = true;
+    process.nextTick(maybeReadMore_, stream, state);
+  }
+}
+
+function maybeReadMore_(stream, state) {
+  // Attempt to read more data if we should.
+  //
+  // The conditions for reading more data are (one of):
+  // - Not enough data buffered (state.length < state.highWaterMark). The loop
+  //   is responsible for filling the buffer with enough data if such data
+  //   is available. If highWaterMark is 0 and we are not in the flowing mode
+  //   we should _not_ attempt to buffer any extra data. We'll get more data
+  //   when the stream consumer calls read() instead.
+  // - No data in the buffer, and the stream is in flowing mode. In this mode
+  //   the loop below is responsible for ensuring read() is called. Failing to
+  //   call read here would abort the flow and there's no other mechanism for
+  //   continuing the flow if the stream consumer has just subscribed to the
+  //   'data' event.
+  //
+  // In addition to the above conditions to keep reading data, the following
+  // conditions prevent the data from being read:
+  // - The stream has ended (state.ended).
+  // - There is already a pending 'read' operation (state.reading). This is a
+  //   case where the the stream has called the implementation defined _read()
+  //   method, but they are processing the call asynchronously and have _not_
+  //   called push() with new data. In this case we skip performing more
+  //   read()s. The execution ends in this method again after the _read() ends
+  //   up calling push() with more data.
+  while (!state.reading && !state.ended && (state.length < state.highWaterMark || state.flowing && state.length === 0)) {
+    var len = state.length;
+    debug('maybeReadMore read 0');
+    stream.read(0);
+    if (len === state.length) // didn't get any data, stop spinning.
+      break;
+  }
+
+  state.readingMore = false;
+} // abstract method.  to be overridden in specific implementation classes.
+// call cb(er, data) where data is <= n in length.
+// for virtual (non-string, non-buffer) streams, "length" is somewhat
+// arbitrary, and perhaps not very meaningful.
+
+
+Readable.prototype._read = function (n) {
+  this.emit('error', new ERR_METHOD_NOT_IMPLEMENTED('_read()'));
+};
+
+Readable.prototype.pipe = function (dest, pipeOpts) {
+  var src = this;
+  var state = this._readableState;
+
+  switch (state.pipesCount) {
+    case 0:
+      state.pipes = dest;
+      break;
+
+    case 1:
+      state.pipes = [state.pipes, dest];
+      break;
+
+    default:
+      state.pipes.push(dest);
+      break;
+  }
+
+  state.pipesCount += 1;
+  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);
+  var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;
+  var endFn = doEnd ? onend : unpipe;
+  if (state.endEmitted) process.nextTick(endFn);else src.once('end', endFn);
+  dest.on('unpipe', onunpipe);
+
+  function onunpipe(readable, unpipeInfo) {
+    debug('onunpipe');
+
+    if (readable === src) {
+      if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
+        unpipeInfo.hasUnpiped = true;
+        cleanup();
+      }
+    }
+  }
+
+  function onend() {
+    debug('onend');
+    dest.end();
+  } // when the dest drains, it reduces the awaitDrain counter
+  // on the source.  This would be more elegant with a .once()
+  // handler in flow(), but adding and removing repeatedly is
+  // too slow.
+
+
+  var ondrain = pipeOnDrain(src);
+  dest.on('drain', ondrain);
+  var cleanedUp = false;
+
+  function cleanup() {
+    debug('cleanup'); // cleanup event handlers once the pipe is broken
+
+    dest.removeListener('close', onclose);
+    dest.removeListener('finish', onfinish);
+    dest.removeListener('drain', ondrain);
+    dest.removeListener('error', onerror);
+    dest.removeListener('unpipe', onunpipe);
+    src.removeListener('end', onend);
+    src.removeListener('end', unpipe);
+    src.removeListener('data', ondata);
+    cleanedUp = true; // if the reader is waiting for a drain event from this
+    // specific writer, then it would cause it to never start
+    // flowing again.
+    // So, if this is awaiting a drain, then we just call it now.
+    // If we don't know, then assume that we are waiting for one.
+
+    if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
+  }
+
+  src.on('data', ondata);
+
+  function ondata(chunk) {
+    debug('ondata');
+    var ret = dest.write(chunk);
+    debug('dest.write', ret);
+
+    if (ret === false) {
+      // If the user unpiped during `dest.write()`, it is possible
+      // to get stuck in a permanently paused state if that write
+      // also returned false.
+      // => Check whether `dest` is still a piping destination.
+      if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
+        debug('false write response, pause', state.awaitDrain);
+        state.awaitDrain++;
+      }
+
+      src.pause();
+    }
+  } // if the dest has an error, then stop piping into it.
+  // however, don't suppress the throwing behavior for this.
+
+
+  function onerror(er) {
+    debug('onerror', er);
+    unpipe();
+    dest.removeListener('error', onerror);
+    if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
+  } // Make sure our error handler is attached before userland ones.
+
+
+  prependListener(dest, 'error', onerror); // Both close and finish should trigger unpipe, but only once.
+
+  function onclose() {
+    dest.removeListener('finish', onfinish);
+    unpipe();
+  }
+
+  dest.once('close', onclose);
+
+  function onfinish() {
+    debug('onfinish');
+    dest.removeListener('close', onclose);
+    unpipe();
+  }
+
+  dest.once('finish', onfinish);
+
+  function unpipe() {
+    debug('unpipe');
+    src.unpipe(dest);
+  } // tell the dest that it's being piped to
+
+
+  dest.emit('pipe', src); // start the flow if it hasn't been started already.
+
+  if (!state.flowing) {
+    debug('pipe resume');
+    src.resume();
+  }
+
+  return dest;
+};
+
+function pipeOnDrain(src) {
+  return function pipeOnDrainFunctionResult() {
+    var state = src._readableState;
+    debug('pipeOnDrain', state.awaitDrain);
+    if (state.awaitDrain) state.awaitDrain--;
+
+    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
+      state.flowing = true;
+      flow(src);
+    }
+  };
+}
+
+Readable.prototype.unpipe = function (dest) {
+  var state = this._readableState;
+  var unpipeInfo = {
+    hasUnpiped: false
+  }; // if we're not piping anywhere, then do nothing.
+
+  if (state.pipesCount === 0) return this; // just one destination.  most common case.
+
+  if (state.pipesCount === 1) {
+    // passed in one, but it's not the right one.
+    if (dest && dest !== state.pipes) return this;
+    if (!dest) dest = state.pipes; // got a match.
+
+    state.pipes = null;
+    state.pipesCount = 0;
+    state.flowing = false;
+    if (dest) dest.emit('unpipe', this, unpipeInfo);
+    return this;
+  } // slow case. multiple pipe destinations.
+
+
+  if (!dest) {
+    // remove all.
+    var dests = state.pipes;
+    var len = state.pipesCount;
+    state.pipes = null;
+    state.pipesCount = 0;
+    state.flowing = false;
+
+    for (var i = 0; i < len; i++) {
+      dests[i].emit('unpipe', this, {
+        hasUnpiped: false
+      });
+    }
+
+    return this;
+  } // try to find the right one.
+
+
+  var index = indexOf(state.pipes, dest);
+  if (index === -1) return this;
+  state.pipes.splice(index, 1);
+  state.pipesCount -= 1;
+  if (state.pipesCount === 1) state.pipes = state.pipes[0];
+  dest.emit('unpipe', this, unpipeInfo);
+  return this;
+}; // set up data events if they are asked for
+// Ensure readable listeners eventually get something
+
+
+Readable.prototype.on = function (ev, fn) {
+  var res = Stream.prototype.on.call(this, ev, fn);
+  var state = this._readableState;
+
+  if (ev === 'data') {
+    // update readableListening so that resume() may be a no-op
+    // a few lines down. This is needed to support once('readable').
+    state.readableListening = this.listenerCount('readable') > 0; // Try start flowing on next tick if stream isn't explicitly paused
+
+    if (state.flowing !== false) this.resume();
+  } else if (ev === 'readable') {
+    if (!state.endEmitted && !state.readableListening) {
+      state.readableListening = state.needReadable = true;
+      state.flowing = false;
+      state.emittedReadable = false;
+      debug('on readable', state.length, state.reading);
+
+      if (state.length) {
+        emitReadable(this);
+      } else if (!state.reading) {
+        process.nextTick(nReadingNextTick, this);
+      }
+    }
+  }
+
+  return res;
+};
+
+Readable.prototype.addListener = Readable.prototype.on;
+
+Readable.prototype.removeListener = function (ev, fn) {
+  var res = Stream.prototype.removeListener.call(this, ev, fn);
+
+  if (ev === 'readable') {
+    // We need to check if there is someone still listening to
+    // readable and reset the state. However this needs to happen
+    // after readable has been emitted but before I/O (nextTick) to
+    // support once('readable', fn) cycles. This means that calling
+    // resume within the same tick will have no
+    // effect.
+    process.nextTick(updateReadableListening, this);
+  }
+
+  return res;
+};
+
+Readable.prototype.removeAllListeners = function (ev) {
+  var res = Stream.prototype.removeAllListeners.apply(this, arguments);
+
+  if (ev === 'readable' || ev === undefined) {
+    // We need to check if there is someone still listening to
+    // readable and reset the state. However this needs to happen
+    // after readable has been emitted but before I/O (nextTick) to
+    // support once('readable', fn) cycles. This means that calling
+    // resume within the same tick will have no
+    // effect.
+    process.nextTick(updateReadableListening, this);
+  }
+
+  return res;
+};
+
+function updateReadableListening(self) {
+  var state = self._readableState;
+  state.readableListening = self.listenerCount('readable') > 0;
+
+  if (state.resumeScheduled && !state.paused) {
+    // flowing needs to be set to true now, otherwise
+    // the upcoming resume will not flow.
+    state.flowing = true; // crude way to check if we should resume
+  } else if (self.listenerCount('data') > 0) {
+    self.resume();
+  }
+}
+
+function nReadingNextTick(self) {
+  debug('readable nexttick read 0');
+  self.read(0);
+} // pause() and resume() are remnants of the legacy readable stream API
+// If the user uses them, then switch into old mode.
+
+
+Readable.prototype.resume = function () {
+  var state = this._readableState;
+
+  if (!state.flowing) {
+    debug('resume'); // we flow only if there is no one listening
+    // for readable, but we still have to call
+    // resume()
+
+    state.flowing = !state.readableListening;
+    resume(this, state);
+  }
+
+  state.paused = false;
+  return this;
+};
+
+function resume(stream, state) {
+  if (!state.resumeScheduled) {
+    state.resumeScheduled = true;
+    process.nextTick(resume_, stream, state);
+  }
+}
+
+function resume_(stream, state) {
+  debug('resume', state.reading);
+
+  if (!state.reading) {
+    stream.read(0);
+  }
+
+  state.resumeScheduled = false;
+  stream.emit('resume');
+  flow(stream);
+  if (state.flowing && !state.reading) stream.read(0);
+}
+
+Readable.prototype.pause = function () {
+  debug('call pause flowing=%j', this._readableState.flowing);
+
+  if (this._readableState.flowing !== false) {
+    debug('pause');
+    this._readableState.flowing = false;
+    this.emit('pause');
+  }
+
+  this._readableState.paused = true;
+  return this;
+};
+
+function flow(stream) {
+  var state = stream._readableState;
+  debug('flow', state.flowing);
+
+  while (state.flowing && stream.read() !== null) {
+    ;
+  }
+} // wrap an old-style stream as the async data source.
+// This is *not* part of the readable stream interface.
+// It is an ugly unfortunate mess of history.
+
+
+Readable.prototype.wrap = function (stream) {
+  var _this = this;
+
+  var state = this._readableState;
+  var paused = false;
+  stream.on('end', function () {
+    debug('wrapped end');
+
+    if (state.decoder && !state.ended) {
+      var chunk = state.decoder.end();
+      if (chunk && chunk.length) _this.push(chunk);
+    }
+
+    _this.push(null);
+  });
+  stream.on('data', function (chunk) {
+    debug('wrapped data');
+    if (state.decoder) chunk = state.decoder.write(chunk); // don't skip over falsy values in objectMode
+
+    if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;
+
+    var ret = _this.push(chunk);
+
+    if (!ret) {
+      paused = true;
+      stream.pause();
+    }
+  }); // proxy all the other methods.
+  // important when wrapping filters and duplexes.
+
+  for (var i in stream) {
+    if (this[i] === undefined && typeof stream[i] === 'function') {
+      this[i] = function methodWrap(method) {
+        return function methodWrapReturnFunction() {
+          return stream[method].apply(stream, arguments);
+        };
+      }(i);
+    }
+  } // proxy certain important events.
+
+
+  for (var n = 0; n < kProxyEvents.length; n++) {
+    stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));
+  } // when we try to consume some more bytes, simply unpause the
+  // underlying stream.
+
+
+  this._read = function (n) {
+    debug('wrapped _read', n);
+
+    if (paused) {
+      paused = false;
+      stream.resume();
+    }
+  };
+
+  return this;
+};
+
+if (typeof Symbol === 'function') {
+  Readable.prototype[Symbol.asyncIterator] = function () {
+    emitExperimentalWarning('Readable[Symbol.asyncIterator]');
+
+    if (createReadableStreamAsyncIterator === undefined) {
+      createReadableStreamAsyncIterator = require('./internal/streams/async_iterator');
+    }
+
+    return createReadableStreamAsyncIterator(this);
+  };
+}
+
+Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function get() {
+    return this._readableState.highWaterMark;
+  }
+});
+Object.defineProperty(Readable.prototype, 'readableBuffer', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function get() {
+    return this._readableState && this._readableState.buffer;
+  }
+});
+Object.defineProperty(Readable.prototype, 'readableFlowing', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function get() {
+    return this._readableState.flowing;
+  },
+  set: function set(state) {
+    if (this._readableState) {
+      this._readableState.flowing = state;
+    }
+  }
+}); // exposed for testing purposes only.
+
+Readable._fromList = fromList;
+Object.defineProperty(Readable.prototype, 'readableLength', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function get() {
+    return this._readableState.length;
+  }
+}); // Pluck off n bytes from an array of buffers.
+// Length is the combined lengths of all the buffers in the list.
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+
+function fromList(n, state) {
+  // nothing buffered
+  if (state.length === 0) return null;
+  var ret;
+  if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
+    // read it all, truncate the list
+    if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.first();else ret = state.buffer.concat(state.length);
+    state.buffer.clear();
+  } else {
+    // read part of list
+    ret = state.buffer.consume(n, state.decoder);
+  }
+  return ret;
+}
+
+function endReadable(stream) {
+  var state = stream._readableState;
+  debug('endReadable', state.endEmitted);
+
+  if (!state.endEmitted) {
+    state.ended = true;
+    process.nextTick(endReadableNT, state, stream);
+  }
+}
+
+function endReadableNT(state, stream) {
+  debug('endReadableNT', state.endEmitted, state.length); // Check that we didn't get one last unshift.
+
+  if (!state.endEmitted && state.length === 0) {
+    state.endEmitted = true;
+    stream.readable = false;
+    stream.emit('end');
+  }
+}
+
+function indexOf(xs, x) {
+  for (var i = 0, l = xs.length; i < l; i++) {
+    if (xs[i] === x) return i;
+  }
+
+  return -1;
+}

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/lib/_stream_transform.js

@@ -0,0 +1,201 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+// a transform stream is a readable/writable stream where you do
+// something with the data.  Sometimes it's called a "filter",
+// but that's not a great name for it, since that implies a thing where
+// some bits pass through, and others are simply ignored.  (That would
+// be a valid example of a transform, of course.)
+//
+// While the output is causally related to the input, it's not a
+// necessarily symmetric or synchronous transformation.  For example,
+// a zlib stream might take multiple plain-text writes(), and then
+// emit a single compressed chunk some time in the future.
+//
+// Here's how this works:
+//
+// The Transform stream has all the aspects of the readable and writable
+// stream classes.  When you write(chunk), that calls _write(chunk,cb)
+// internally, and returns false if there's a lot of pending writes
+// buffered up.  When you call read(), that calls _read(n) until
+// there's enough pending readable data buffered up.
+//
+// In a transform stream, the written data is placed in a buffer.  When
+// _read(n) is called, it transforms the queued up data, calling the
+// buffered _write cb's as it consumes chunks.  If consuming a single
+// written chunk would result in multiple output chunks, then the first
+// outputted bit calls the readcb, and subsequent chunks just go into
+// the read buffer, and will cause it to emit 'readable' if necessary.
+//
+// This way, back-pressure is actually determined by the reading side,
+// since _read has to be called to start processing a new chunk.  However,
+// a pathological inflate type of transform can cause excessive buffering
+// here.  For example, imagine a stream where every byte of input is
+// interpreted as an integer from 0-255, and then results in that many
+// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
+// 1kb of data being output.  In this case, you could write a very small
+// amount of input, and end up with a very large amount of output.  In
+// such a pathological inflating mechanism, there'd be no way to tell
+// the system to stop doing the transform.  A single 4MB write could
+// cause the system to run out of memory.
+//
+// However, even in such a pathological case, only a single written chunk
+// would be consumed, and then the rest would wait (un-transformed) until
+// the results of the previous transformed chunk were consumed.
+'use strict';
+
+module.exports = Transform;
+
+var _require$codes = require('../errors').codes,
+    ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
+    ERR_MULTIPLE_CALLBACK = _require$codes.ERR_MULTIPLE_CALLBACK,
+    ERR_TRANSFORM_ALREADY_TRANSFORMING = _require$codes.ERR_TRANSFORM_ALREADY_TRANSFORMING,
+    ERR_TRANSFORM_WITH_LENGTH_0 = _require$codes.ERR_TRANSFORM_WITH_LENGTH_0;
+
+var Duplex = require('./_stream_duplex');
+
+require('inherits')(Transform, Duplex);
+
+function afterTransform(er, data) {
+  var ts = this._transformState;
+  ts.transforming = false;
+  var cb = ts.writecb;
+
+  if (cb === null) {
+    return this.emit('error', new ERR_MULTIPLE_CALLBACK());
+  }
+
+  ts.writechunk = null;
+  ts.writecb = null;
+  if (data != null) // single equals check for both `null` and `undefined`
+    this.push(data);
+  cb(er);
+  var rs = this._readableState;
+  rs.reading = false;
+
+  if (rs.needReadable || rs.length < rs.highWaterMark) {
+    this._read(rs.highWaterMark);
+  }
+}
+
+function Transform(options) {
+  if (!(this instanceof Transform)) return new Transform(options);
+  Duplex.call(this, options);
+  this._transformState = {
+    afterTransform: afterTransform.bind(this),
+    needTransform: false,
+    transforming: false,
+    writecb: null,
+    writechunk: null,
+    writeencoding: null
+  }; // start out asking for a readable event once data is transformed.
+
+  this._readableState.needReadable = true; // we have implemented the _read method, and done the other things
+  // that Readable wants before the first _read call, so unset the
+  // sync guard flag.
+
+  this._readableState.sync = false;
+
+  if (options) {
+    if (typeof options.transform === 'function') this._transform = options.transform;
+    if (typeof options.flush === 'function') this._flush = options.flush;
+  } // When the writable side finishes, then flush out anything remaining.
+
+
+  this.on('prefinish', prefinish);
+}
+
+function prefinish() {
+  var _this = this;
+
+  if (typeof this._flush === 'function' && !this._readableState.destroyed) {
+    this._flush(function (er, data) {
+      done(_this, er, data);
+    });
+  } else {
+    done(this, null, null);
+  }
+}
+
+Transform.prototype.push = function (chunk, encoding) {
+  this._transformState.needTransform = false;
+  return Duplex.prototype.push.call(this, chunk, encoding);
+}; // This is the part where you do stuff!
+// override this function in implementation classes.
+// 'chunk' is an input chunk.
+//
+// Call `push(newChunk)` to pass along transformed output
+// to the readable side.  You may call 'push' zero or more times.
+//
+// Call `cb(err)` when you are done with this chunk.  If you pass
+// an error, then that'll put the hurt on the whole operation.  If you
+// never call cb(), then you'll never get another chunk.
+
+
+Transform.prototype._transform = function (chunk, encoding, cb) {
+  cb(new ERR_METHOD_NOT_IMPLEMENTED('_transform()'));
+};
+
+Transform.prototype._write = function (chunk, encoding, cb) {
+  var ts = this._transformState;
+  ts.writecb = cb;
+  ts.writechunk = chunk;
+  ts.writeencoding = encoding;
+
+  if (!ts.transforming) {
+    var rs = this._readableState;
+    if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
+  }
+}; // Doesn't matter what the args are here.
+// _transform does all the work.
+// That we got here means that the readable side wants more data.
+
+
+Transform.prototype._read = function (n) {
+  var ts = this._transformState;
+
+  if (ts.writechunk !== null && !ts.transforming) {
+    ts.transforming = true;
+
+    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
+  } else {
+    // mark that we need a transform, so that any data that comes in
+    // will get processed, now that we've asked for it.
+    ts.needTransform = true;
+  }
+};
+
+Transform.prototype._destroy = function (err, cb) {
+  Duplex.prototype._destroy.call(this, err, function (err2) {
+    cb(err2);
+  });
+};
+
+function done(stream, er, data) {
+  if (er) return stream.emit('error', er);
+  if (data != null) // single equals check for both `null` and `undefined`
+    stream.push(data); // TODO(BridgeAR): Write a test for these two error cases
+  // if there's nothing in the write buffer, then that means
+  // that nothing more will ever be provided
+
+  if (stream._writableState.length) throw new ERR_TRANSFORM_WITH_LENGTH_0();
+  if (stream._transformState.transforming) throw new ERR_TRANSFORM_ALREADY_TRANSFORMING();
+  return stream.push(null);
+}

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/lib/_stream_writable.js

@@ -0,0 +1,683 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+// A bit simpler than readable streams.
+// Implement an async ._write(chunk, encoding, cb), and it'll handle all
+// the drain event emission and buffering.
+'use strict';
+
+module.exports = Writable;
+/* <replacement> */
+
+function WriteReq(chunk, encoding, cb) {
+  this.chunk = chunk;
+  this.encoding = encoding;
+  this.callback = cb;
+  this.next = null;
+} // It seems a linked list but it is not
+// there will be only 2 of these for each stream
+
+
+function CorkedRequest(state) {
+  var _this = this;
+
+  this.next = null;
+  this.entry = null;
+
+  this.finish = function () {
+    onCorkedFinish(_this, state);
+  };
+}
+/* </replacement> */
+
+/*<replacement>*/
+
+
+var Duplex;
+/*</replacement>*/
+
+Writable.WritableState = WritableState;
+/*<replacement>*/
+
+var internalUtil = {
+  deprecate: require('util-deprecate')
+};
+/*</replacement>*/
+
+/*<replacement>*/
+
+var Stream = require('./internal/streams/stream');
+/*</replacement>*/
+
+
+var Buffer = require('buffer').Buffer;
+
+var OurUint8Array = global.Uint8Array || function () {};
+
+function _uint8ArrayToBuffer(chunk) {
+  return Buffer.from(chunk);
+}
+
+function _isUint8Array(obj) {
+  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
+}
+
+var destroyImpl = require('./internal/streams/destroy');
+
+var _require = require('./internal/streams/state'),
+    getHighWaterMark = _require.getHighWaterMark;
+
+var _require$codes = require('../errors').codes,
+    ERR_INVALID_ARG_TYPE = _require$codes.ERR_INVALID_ARG_TYPE,
+    ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
+    ERR_MULTIPLE_CALLBACK = _require$codes.ERR_MULTIPLE_CALLBACK,
+    ERR_STREAM_CANNOT_PIPE = _require$codes.ERR_STREAM_CANNOT_PIPE,
+    ERR_STREAM_DESTROYED = _require$codes.ERR_STREAM_DESTROYED,
+    ERR_STREAM_NULL_VALUES = _require$codes.ERR_STREAM_NULL_VALUES,
+    ERR_STREAM_WRITE_AFTER_END = _require$codes.ERR_STREAM_WRITE_AFTER_END,
+    ERR_UNKNOWN_ENCODING = _require$codes.ERR_UNKNOWN_ENCODING;
+
+require('inherits')(Writable, Stream);
+
+function nop() {}
+
+function WritableState(options, stream, isDuplex) {
+  Duplex = Duplex || require('./_stream_duplex');
+  options = options || {}; // Duplex streams are both readable and writable, but share
+  // the same options object.
+  // However, some cases require setting options to different
+  // values for the readable and the writable sides of the duplex stream,
+  // e.g. options.readableObjectMode vs. options.writableObjectMode, etc.
+
+  if (typeof isDuplex !== 'boolean') isDuplex = stream instanceof Duplex; // object stream flag to indicate whether or not this stream
+  // contains buffers or objects.
+
+  this.objectMode = !!options.objectMode;
+  if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode; // the point at which write() starts returning false
+  // Note: 0 is a valid value, means that we always return false if
+  // the entire buffer is not flushed immediately on write()
+
+  this.highWaterMark = getHighWaterMark(this, options, 'writableHighWaterMark', isDuplex); // if _final has been called
+
+  this.finalCalled = false; // drain event flag.
+
+  this.needDrain = false; // at the start of calling end()
+
+  this.ending = false; // when end() has been called, and returned
+
+  this.ended = false; // when 'finish' is emitted
+
+  this.finished = false; // has it been destroyed
+
+  this.destroyed = false; // should we decode strings into buffers before passing to _write?
+  // this is here so that some node-core streams can optimize string
+  // handling at a lower level.
+
+  var noDecode = options.decodeStrings === false;
+  this.decodeStrings = !noDecode; // Crypto is kind of old and crusty.  Historically, its default string
+  // encoding is 'binary' so we have to make this configurable.
+  // Everything else in the universe uses 'utf8', though.
+
+  this.defaultEncoding = options.defaultEncoding || 'utf8'; // not an actual buffer we keep track of, but a measurement
+  // of how much we're waiting to get pushed to some underlying
+  // socket or file.
+
+  this.length = 0; // a flag to see when we're in the middle of a write.
+
+  this.writing = false; // when true all writes will be buffered until .uncork() call
+
+  this.corked = 0; // a flag to be able to tell if the onwrite cb is called immediately,
+  // or on a later tick.  We set this to true at first, because any
+  // actions that shouldn't happen until "later" should generally also
+  // not happen before the first write call.
+
+  this.sync = true; // a flag to know if we're processing previously buffered items, which
+  // may call the _write() callback in the same tick, so that we don't
+  // end up in an overlapped onwrite situation.
+
+  this.bufferProcessing = false; // the callback that's passed to _write(chunk,cb)
+
+  this.onwrite = function (er) {
+    onwrite(stream, er);
+  }; // the callback that the user supplies to write(chunk,encoding,cb)
+
+
+  this.writecb = null; // the amount that is being written when _write is called.
+
+  this.writelen = 0;
+  this.bufferedRequest = null;
+  this.lastBufferedRequest = null; // number of pending user-supplied write callbacks
+  // this must be 0 before 'finish' can be emitted
+
+  this.pendingcb = 0; // emit prefinish if the only thing we're waiting for is _write cbs
+  // This is relevant for synchronous Transform streams
+
+  this.prefinished = false; // True if the error was already emitted and should not be thrown again
+
+  this.errorEmitted = false; // Should close be emitted on destroy. Defaults to true.
+
+  this.emitClose = options.emitClose !== false; // count buffered requests
+
+  this.bufferedRequestCount = 0; // allocate the first CorkedRequest, there is always
+  // one allocated and free to use, and we maintain at most two
+
+  this.corkedRequestsFree = new CorkedRequest(this);
+}
+
+WritableState.prototype.getBuffer = function getBuffer() {
+  var current = this.bufferedRequest;
+  var out = [];
+
+  while (current) {
+    out.push(current);
+    current = current.next;
+  }
+
+  return out;
+};
+
+(function () {
+  try {
+    Object.defineProperty(WritableState.prototype, 'buffer', {
+      get: internalUtil.deprecate(function writableStateBufferGetter() {
+        return this.getBuffer();
+      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
+    });
+  } catch (_) {}
+})(); // Test _writableState for inheritance to account for Duplex streams,
+// whose prototype chain only points to Readable.
+
+
+var realHasInstance;
+
+if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
+  realHasInstance = Function.prototype[Symbol.hasInstance];
+  Object.defineProperty(Writable, Symbol.hasInstance, {
+    value: function value(object) {
+      if (realHasInstance.call(this, object)) return true;
+      if (this !== Writable) return false;
+      return object && object._writableState instanceof WritableState;
+    }
+  });
+} else {
+  realHasInstance = function realHasInstance(object) {
+    return object instanceof this;
+  };
+}
+
+function Writable(options) {
+  Duplex = Duplex || require('./_stream_duplex'); // Writable ctor is applied to Duplexes, too.
+  // `realHasInstance` is necessary because using plain `instanceof`
+  // would return false, as no `_writableState` property is attached.
+  // Trying to use the custom `instanceof` for Writable here will also break the
+  // Node.js LazyTransform implementation, which has a non-trivial getter for
+  // `_writableState` that would lead to infinite recursion.
+  // Checking for a Stream.Duplex instance is faster here instead of inside
+  // the WritableState constructor, at least with V8 6.5
+
+  var isDuplex = this instanceof Duplex;
+  if (!isDuplex && !realHasInstance.call(Writable, this)) return new Writable(options);
+  this._writableState = new WritableState(options, this, isDuplex); // legacy.
+
+  this.writable = true;
+
+  if (options) {
+    if (typeof options.write === 'function') this._write = options.write;
+    if (typeof options.writev === 'function') this._writev = options.writev;
+    if (typeof options.destroy === 'function') this._destroy = options.destroy;
+    if (typeof options.final === 'function') this._final = options.final;
+  }
+
+  Stream.call(this);
+} // Otherwise people can pipe Writable streams, which is just wrong.
+
+
+Writable.prototype.pipe = function () {
+  this.emit('error', new ERR_STREAM_CANNOT_PIPE());
+};
+
+function writeAfterEnd(stream, cb) {
+  var er = new ERR_STREAM_WRITE_AFTER_END(); // TODO: defer error events consistently everywhere, not just the cb
+
+  stream.emit('error', er);
+  process.nextTick(cb, er);
+} // Checks that a user-supplied chunk is valid, especially for the particular
+// mode the stream is in. Currently this means that `null` is never accepted
+// and undefined/non-string values are only allowed in object mode.
+
+
+function validChunk(stream, state, chunk, cb) {
+  var er;
+
+  if (chunk === null) {
+    er = new ERR_STREAM_NULL_VALUES();
+  } else if (typeof chunk !== 'string' && !state.objectMode) {
+    er = new ERR_INVALID_ARG_TYPE('chunk', ['string', 'Buffer'], chunk);
+  }
+
+  if (er) {
+    stream.emit('error', er);
+    process.nextTick(cb, er);
+    return false;
+  }
+
+  return true;
+}
+
+Writable.prototype.write = function (chunk, encoding, cb) {
+  var state = this._writableState;
+  var ret = false;
+
+  var isBuf = !state.objectMode && _isUint8Array(chunk);
+
+  if (isBuf && !Buffer.isBuffer(chunk)) {
+    chunk = _uint8ArrayToBuffer(chunk);
+  }
+
+  if (typeof encoding === 'function') {
+    cb = encoding;
+    encoding = null;
+  }
+
+  if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;
+  if (typeof cb !== 'function') cb = nop;
+  if (state.ending) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
+    state.pendingcb++;
+    ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
+  }
+  return ret;
+};
+
+Writable.prototype.cork = function () {
+  this._writableState.corked++;
+};
+
+Writable.prototype.uncork = function () {
+  var state = this._writableState;
+
+  if (state.corked) {
+    state.corked--;
+    if (!state.writing && !state.corked && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
+  }
+};
+
+Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
+  // node::ParseEncoding() requires lower case.
+  if (typeof encoding === 'string') encoding = encoding.toLowerCase();
+  if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new ERR_UNKNOWN_ENCODING(encoding);
+  this._writableState.defaultEncoding = encoding;
+  return this;
+};
+
+Object.defineProperty(Writable.prototype, 'writableBuffer', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function get() {
+    return this._writableState && this._writableState.getBuffer();
+  }
+});
+
+function decodeChunk(state, chunk, encoding) {
+  if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
+    chunk = Buffer.from(chunk, encoding);
+  }
+
+  return chunk;
+}
+
+Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function get() {
+    return this._writableState.highWaterMark;
+  }
+}); // if we're already writing something, then just put this
+// in the queue, and wait our turn.  Otherwise, call _write
+// If we return false, then we need a drain event, so set that flag.
+
+function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
+  if (!isBuf) {
+    var newChunk = decodeChunk(state, chunk, encoding);
+
+    if (chunk !== newChunk) {
+      isBuf = true;
+      encoding = 'buffer';
+      chunk = newChunk;
+    }
+  }
+
+  var len = state.objectMode ? 1 : chunk.length;
+  state.length += len;
+  var ret = state.length < state.highWaterMark; // we must ensure that previous needDrain will not be reset to false.
+
+  if (!ret) state.needDrain = true;
+
+  if (state.writing || state.corked) {
+    var last = state.lastBufferedRequest;
+    state.lastBufferedRequest = {
+      chunk: chunk,
+      encoding: encoding,
+      isBuf: isBuf,
+      callback: cb,
+      next: null
+    };
+
+    if (last) {
+      last.next = state.lastBufferedRequest;
+    } else {
+      state.bufferedRequest = state.lastBufferedRequest;
+    }
+
+    state.bufferedRequestCount += 1;
+  } else {
+    doWrite(stream, state, false, len, chunk, encoding, cb);
+  }
+
+  return ret;
+}
+
+function doWrite(stream, state, writev, len, chunk, encoding, cb) {
+  state.writelen = len;
+  state.writecb = cb;
+  state.writing = true;
+  state.sync = true;
+  if (state.destroyed) state.onwrite(new ERR_STREAM_DESTROYED('write'));else if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
+  state.sync = false;
+}
+
+function onwriteError(stream, state, sync, er, cb) {
+  --state.pendingcb;
+
+  if (sync) {
+    // defer the callback if we are being called synchronously
+    // to avoid piling up things on the stack
+    process.nextTick(cb, er); // this can emit finish, and it will always happen
+    // after error
+
+    process.nextTick(finishMaybe, stream, state);
+    stream._writableState.errorEmitted = true;
+    stream.emit('error', er);
+  } else {
+    // the caller expect this to happen before if
+    // it is async
+    cb(er);
+    stream._writableState.errorEmitted = true;
+    stream.emit('error', er); // this can emit finish, but finish must
+    // always follow error
+
+    finishMaybe(stream, state);
+  }
+}
+
+function onwriteStateUpdate(state) {
+  state.writing = false;
+  state.writecb = null;
+  state.length -= state.writelen;
+  state.writelen = 0;
+}
+
+function onwrite(stream, er) {
+  var state = stream._writableState;
+  var sync = state.sync;
+  var cb = state.writecb;
+  if (typeof cb !== 'function') throw new ERR_MULTIPLE_CALLBACK();
+  onwriteStateUpdate(state);
+  if (er) onwriteError(stream, state, sync, er, cb);else {
+    // Check if we're actually ready to finish, but don't emit yet
+    var finished = needFinish(state) || stream.destroyed;
+
+    if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
+      clearBuffer(stream, state);
+    }
+
+    if (sync) {
+      process.nextTick(afterWrite, stream, state, finished, cb);
+    } else {
+      afterWrite(stream, state, finished, cb);
+    }
+  }
+}
+
+function afterWrite(stream, state, finished, cb) {
+  if (!finished) onwriteDrain(stream, state);
+  state.pendingcb--;
+  cb();
+  finishMaybe(stream, state);
+} // Must force callback to be called on nextTick, so that we don't
+// emit 'drain' before the write() consumer gets the 'false' return
+// value, and has a chance to attach a 'drain' listener.
+
+
+function onwriteDrain(stream, state) {
+  if (state.length === 0 && state.needDrain) {
+    state.needDrain = false;
+    stream.emit('drain');
+  }
+} // if there's something in the buffer waiting, then process it
+
+
+function clearBuffer(stream, state) {
+  state.bufferProcessing = true;
+  var entry = state.bufferedRequest;
+
+  if (stream._writev && entry && entry.next) {
+    // Fast case, write everything using _writev()
+    var l = state.bufferedRequestCount;
+    var buffer = new Array(l);
+    var holder = state.corkedRequestsFree;
+    holder.entry = entry;
+    var count = 0;
+    var allBuffers = true;
+
+    while (entry) {
+      buffer[count] = entry;
+      if (!entry.isBuf) allBuffers = false;
+      entry = entry.next;
+      count += 1;
+    }
+
+    buffer.allBuffers = allBuffers;
+    doWrite(stream, state, true, state.length, buffer, '', holder.finish); // doWrite is almost always async, defer these to save a bit of time
+    // as the hot path ends with doWrite
+
+    state.pendingcb++;
+    state.lastBufferedRequest = null;
+
+    if (holder.next) {
+      state.corkedRequestsFree = holder.next;
+      holder.next = null;
+    } else {
+      state.corkedRequestsFree = new CorkedRequest(state);
+    }
+
+    state.bufferedRequestCount = 0;
+  } else {
+    // Slow case, write chunks one-by-one
+    while (entry) {
+      var chunk = entry.chunk;
+      var encoding = entry.encoding;
+      var cb = entry.callback;
+      var len = state.objectMode ? 1 : chunk.length;
+      doWrite(stream, state, false, len, chunk, encoding, cb);
+      entry = entry.next;
+      state.bufferedRequestCount--; // if we didn't call the onwrite immediately, then
+      // it means that we need to wait until it does.
+      // also, that means that the chunk and cb are currently
+      // being processed, so move the buffer counter past them.
+
+      if (state.writing) {
+        break;
+      }
+    }
+
+    if (entry === null) state.lastBufferedRequest = null;
+  }
+
+  state.bufferedRequest = entry;
+  state.bufferProcessing = false;
+}
+
+Writable.prototype._write = function (chunk, encoding, cb) {
+  cb(new ERR_METHOD_NOT_IMPLEMENTED('_write()'));
+};
+
+Writable.prototype._writev = null;
+
+Writable.prototype.end = function (chunk, encoding, cb) {
+  var state = this._writableState;
+
+  if (typeof chunk === 'function') {
+    cb = chunk;
+    chunk = null;
+    encoding = null;
+  } else if (typeof encoding === 'function') {
+    cb = encoding;
+    encoding = null;
+  }
+
+  if (chunk !== null && chunk !== undefined) this.write(chunk, encoding); // .end() fully uncorks
+
+  if (state.corked) {
+    state.corked = 1;
+    this.uncork();
+  } // ignore unnecessary end() calls.
+
+
+  if (!state.ending) endWritable(this, state, cb);
+  return this;
+};
+
+Object.defineProperty(Writable.prototype, 'writableLength', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function get() {
+    return this._writableState.length;
+  }
+});
+
+function needFinish(state) {
+  return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
+}
+
+function callFinal(stream, state) {
+  stream._final(function (err) {
+    state.pendingcb--;
+
+    if (err) {
+      stream.emit('error', err);
+    }
+
+    state.prefinished = true;
+    stream.emit('prefinish');
+    finishMaybe(stream, state);
+  });
+}
+
+function prefinish(stream, state) {
+  if (!state.prefinished && !state.finalCalled) {
+    if (typeof stream._final === 'function' && !state.destroyed) {
+      state.pendingcb++;
+      state.finalCalled = true;
+      process.nextTick(callFinal, stream, state);
+    } else {
+      state.prefinished = true;
+      stream.emit('prefinish');
+    }
+  }
+}
+
+function finishMaybe(stream, state) {
+  var need = needFinish(state);
+
+  if (need) {
+    prefinish(stream, state);
+
+    if (state.pendingcb === 0) {
+      state.finished = true;
+      stream.emit('finish');
+    }
+  }
+
+  return need;
+}
+
+function endWritable(stream, state, cb) {
+  state.ending = true;
+  finishMaybe(stream, state);
+
+  if (cb) {
+    if (state.finished) process.nextTick(cb);else stream.once('finish', cb);
+  }
+
+  state.ended = true;
+  stream.writable = false;
+}
+
+function onCorkedFinish(corkReq, state, err) {
+  var entry = corkReq.entry;
+  corkReq.entry = null;
+
+  while (entry) {
+    var cb = entry.callback;
+    state.pendingcb--;
+    cb(err);
+    entry = entry.next;
+  } // reuse the free corkReq.
+
+
+  state.corkedRequestsFree.next = corkReq;
+}
+
+Object.defineProperty(Writable.prototype, 'destroyed', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function get() {
+    if (this._writableState === undefined) {
+      return false;
+    }
+
+    return this._writableState.destroyed;
+  },
+  set: function set(value) {
+    // we ignore the value if the stream
+    // has not been initialized yet
+    if (!this._writableState) {
+      return;
+    } // backward compatibility, the user is explicitly
+    // managing destroyed
+
+
+    this._writableState.destroyed = value;
+  }
+});
+Writable.prototype.destroy = destroyImpl.destroy;
+Writable.prototype._undestroy = destroyImpl.undestroy;
+
+Writable.prototype._destroy = function (err, cb) {
+  cb(err);
+};

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/lib/internal/streams/async_iterator.js

@@ -0,0 +1,207 @@
+'use strict';
+
+var _Object$setPrototypeO;
+
+function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
+
+var finished = require('./end-of-stream');
+
+var kLastResolve = Symbol('lastResolve');
+var kLastReject = Symbol('lastReject');
+var kError = Symbol('error');
+var kEnded = Symbol('ended');
+var kLastPromise = Symbol('lastPromise');
+var kHandlePromise = Symbol('handlePromise');
+var kStream = Symbol('stream');
+
+function createIterResult(value, done) {
+  return {
+    value: value,
+    done: done
+  };
+}
+
+function readAndResolve(iter) {
+  var resolve = iter[kLastResolve];
+
+  if (resolve !== null) {
+    var data = iter[kStream].read(); // we defer if data is null
+    // we can be expecting either 'end' or
+    // 'error'
+
+    if (data !== null) {
+      iter[kLastPromise] = null;
+      iter[kLastResolve] = null;
+      iter[kLastReject] = null;
+      resolve(createIterResult(data, false));
+    }
+  }
+}
+
+function onReadable(iter) {
+  // we wait for the next tick, because it might
+  // emit an error with process.nextTick
+  process.nextTick(readAndResolve, iter);
+}
+
+function wrapForNext(lastPromise, iter) {
+  return function (resolve, reject) {
+    lastPromise.then(function () {
+      if (iter[kEnded]) {
+        resolve(createIterResult(undefined, true));
+        return;
+      }
+
+      iter[kHandlePromise](resolve, reject);
+    }, reject);
+  };
+}
+
+var AsyncIteratorPrototype = Object.getPrototypeOf(function () {});
+var ReadableStreamAsyncIteratorPrototype = Object.setPrototypeOf((_Object$setPrototypeO = {
+  get stream() {
+    return this[kStream];
+  },
+
+  next: function next() {
+    var _this = this;
+
+    // if we have detected an error in the meanwhile
+    // reject straight away
+    var error = this[kError];
+
+    if (error !== null) {
+      return Promise.reject(error);
+    }
+
+    if (this[kEnded]) {
+      return Promise.resolve(createIterResult(undefined, true));
+    }
+
+    if (this[kStream].destroyed) {
+      // We need to defer via nextTick because if .destroy(err) is
+      // called, the error will be emitted via nextTick, and
+      // we cannot guarantee that there is no error lingering around
+      // waiting to be emitted.
+      return new Promise(function (resolve, reject) {
+        process.nextTick(function () {
+          if (_this[kError]) {
+            reject(_this[kError]);
+          } else {
+            resolve(createIterResult(undefined, true));
+          }
+        });
+      });
+    } // if we have multiple next() calls
+    // we will wait for the previous Promise to finish
+    // this logic is optimized to support for await loops,
+    // where next() is only called once at a time
+
+
+    var lastPromise = this[kLastPromise];
+    var promise;
+
+    if (lastPromise) {
+      promise = new Promise(wrapForNext(lastPromise, this));
+    } else {
+      // fast path needed to support multiple this.push()
+      // without triggering the next() queue
+      var data = this[kStream].read();
+
+      if (data !== null) {
+        return Promise.resolve(createIterResult(data, false));
+      }
+
+      promise = new Promise(this[kHandlePromise]);
+    }
+
+    this[kLastPromise] = promise;
+    return promise;
+  }
+}, _defineProperty(_Object$setPrototypeO, Symbol.asyncIterator, function () {
+  return this;
+}), _defineProperty(_Object$setPrototypeO, "return", function _return() {
+  var _this2 = this;
+
+  // destroy(err, cb) is a private API
+  // we can guarantee we have that here, because we control the
+  // Readable class this is attached to
+  return new Promise(function (resolve, reject) {
+    _this2[kStream].destroy(null, function (err) {
+      if (err) {
+        reject(err);
+        return;
+      }
+
+      resolve(createIterResult(undefined, true));
+    });
+  });
+}), _Object$setPrototypeO), AsyncIteratorPrototype);
+
+var createReadableStreamAsyncIterator = function createReadableStreamAsyncIterator(stream) {
+  var _Object$create;
+
+  var iterator = Object.create(ReadableStreamAsyncIteratorPrototype, (_Object$create = {}, _defineProperty(_Object$create, kStream, {
+    value: stream,
+    writable: true
+  }), _defineProperty(_Object$create, kLastResolve, {
+    value: null,
+    writable: true
+  }), _defineProperty(_Object$create, kLastReject, {
+    value: null,
+    writable: true
+  }), _defineProperty(_Object$create, kError, {
+    value: null,
+    writable: true
+  }), _defineProperty(_Object$create, kEnded, {
+    value: stream._readableState.endEmitted,
+    writable: true
+  }), _defineProperty(_Object$create, kHandlePromise, {
+    value: function value(resolve, reject) {
+      var data = iterator[kStream].read();
+
+      if (data) {
+        iterator[kLastPromise] = null;
+        iterator[kLastResolve] = null;
+        iterator[kLastReject] = null;
+        resolve(createIterResult(data, false));
+      } else {
+        iterator[kLastResolve] = resolve;
+        iterator[kLastReject] = reject;
+      }
+    },
+    writable: true
+  }), _Object$create));
+  iterator[kLastPromise] = null;
+  finished(stream, function (err) {
+    if (err && err.code !== 'ERR_STREAM_PREMATURE_CLOSE') {
+      var reject = iterator[kLastReject]; // reject if we are waiting for data in the Promise
+      // returned by next() and store the error
+
+      if (reject !== null) {
+        iterator[kLastPromise] = null;
+        iterator[kLastResolve] = null;
+        iterator[kLastReject] = null;
+        reject(err);
+      }
+
+      iterator[kError] = err;
+      return;
+    }
+
+    var resolve = iterator[kLastResolve];
+
+    if (resolve !== null) {
+      iterator[kLastPromise] = null;
+      iterator[kLastResolve] = null;
+      iterator[kLastReject] = null;
+      resolve(createIterResult(undefined, true));
+    }
+
+    iterator[kEnded] = true;
+  });
+  stream.on('readable', onReadable.bind(null, iterator));
+  return iterator;
+};
+
+module.exports = createReadableStreamAsyncIterator;

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/lib/internal/streams/buffer_list.js

@@ -0,0 +1,189 @@
+'use strict';
+
+function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }
+
+function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
+
+var _require = require('buffer'),
+    Buffer = _require.Buffer;
+
+var _require2 = require('util'),
+    inspect = _require2.inspect;
+
+var custom = inspect && inspect.custom || 'inspect';
+
+function copyBuffer(src, target, offset) {
+  Buffer.prototype.copy.call(src, target, offset);
+}
+
+module.exports =
+/*#__PURE__*/
+function () {
+  function BufferList() {
+    this.head = null;
+    this.tail = null;
+    this.length = 0;
+  }
+
+  var _proto = BufferList.prototype;
+
+  _proto.push = function push(v) {
+    var entry = {
+      data: v,
+      next: null
+    };
+    if (this.length > 0) this.tail.next = entry;else this.head = entry;
+    this.tail = entry;
+    ++this.length;
+  };
+
+  _proto.unshift = function unshift(v) {
+    var entry = {
+      data: v,
+      next: this.head
+    };
+    if (this.length === 0) this.tail = entry;
+    this.head = entry;
+    ++this.length;
+  };
+
+  _proto.shift = function shift() {
+    if (this.length === 0) return;
+    var ret = this.head.data;
+    if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
+    --this.length;
+    return ret;
+  };
+
+  _proto.clear = function clear() {
+    this.head = this.tail = null;
+    this.length = 0;
+  };
+
+  _proto.join = function join(s) {
+    if (this.length === 0) return '';
+    var p = this.head;
+    var ret = '' + p.data;
+
+    while (p = p.next) {
+      ret += s + p.data;
+    }
+
+    return ret;
+  };
+
+  _proto.concat = function concat(n) {
+    if (this.length === 0) return Buffer.alloc(0);
+    var ret = Buffer.allocUnsafe(n >>> 0);
+    var p = this.head;
+    var i = 0;
+
+    while (p) {
+      copyBuffer(p.data, ret, i);
+      i += p.data.length;
+      p = p.next;
+    }
+
+    return ret;
+  } // Consumes a specified amount of bytes or characters from the buffered data.
+  ;
+
+  _proto.consume = function consume(n, hasStrings) {
+    var ret;
+
+    if (n < this.head.data.length) {
+      // `slice` is the same for buffers and strings.
+      ret = this.head.data.slice(0, n);
+      this.head.data = this.head.data.slice(n);
+    } else if (n === this.head.data.length) {
+      // First chunk is a perfect match.
+      ret = this.shift();
+    } else {
+      // Result spans more than one buffer.
+      ret = hasStrings ? this._getString(n) : this._getBuffer(n);
+    }
+
+    return ret;
+  };
+
+  _proto.first = function first() {
+    return this.head.data;
+  } // Consumes a specified amount of characters from the buffered data.
+  ;
+
+  _proto._getString = function _getString(n) {
+    var p = this.head;
+    var c = 1;
+    var ret = p.data;
+    n -= ret.length;
+
+    while (p = p.next) {
+      var str = p.data;
+      var nb = n > str.length ? str.length : n;
+      if (nb === str.length) ret += str;else ret += str.slice(0, n);
+      n -= nb;
+
+      if (n === 0) {
+        if (nb === str.length) {
+          ++c;
+          if (p.next) this.head = p.next;else this.head = this.tail = null;
+        } else {
+          this.head = p;
+          p.data = str.slice(nb);
+        }
+
+        break;
+      }
+
+      ++c;
+    }
+
+    this.length -= c;
+    return ret;
+  } // Consumes a specified amount of bytes from the buffered data.
+  ;
+
+  _proto._getBuffer = function _getBuffer(n) {
+    var ret = Buffer.allocUnsafe(n);
+    var p = this.head;
+    var c = 1;
+    p.data.copy(ret);
+    n -= p.data.length;
+
+    while (p = p.next) {
+      var buf = p.data;
+      var nb = n > buf.length ? buf.length : n;
+      buf.copy(ret, ret.length - n, 0, nb);
+      n -= nb;
+
+      if (n === 0) {
+        if (nb === buf.length) {
+          ++c;
+          if (p.next) this.head = p.next;else this.head = this.tail = null;
+        } else {
+          this.head = p;
+          p.data = buf.slice(nb);
+        }
+
+        break;
+      }
+
+      ++c;
+    }
+
+    this.length -= c;
+    return ret;
+  } // Make sure the linked list only shows the minimal necessary information.
+  ;
+
+  _proto[custom] = function (_, options) {
+    return inspect(this, _objectSpread({}, options, {
+      // Only inspect one level.
+      depth: 0,
+      // It should not recurse.
+      customInspect: false
+    }));
+  };
+
+  return BufferList;
+}();

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/lib/internal/streams/destroy.js

@@ -0,0 +1,85 @@
+'use strict'; // undocumented cb() API, needed for core, not for public API
+
+function destroy(err, cb) {
+  var _this = this;
+
+  var readableDestroyed = this._readableState && this._readableState.destroyed;
+  var writableDestroyed = this._writableState && this._writableState.destroyed;
+
+  if (readableDestroyed || writableDestroyed) {
+    if (cb) {
+      cb(err);
+    } else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
+      process.nextTick(emitErrorNT, this, err);
+    }
+
+    return this;
+  } // we set destroyed to true before firing error callbacks in order
+  // to make it re-entrance safe in case destroy() is called within callbacks
+
+
+  if (this._readableState) {
+    this._readableState.destroyed = true;
+  } // if this is a duplex stream mark the writable part as destroyed as well
+
+
+  if (this._writableState) {
+    this._writableState.destroyed = true;
+  }
+
+  this._destroy(err || null, function (err) {
+    if (!cb && err) {
+      process.nextTick(emitErrorAndCloseNT, _this, err);
+
+      if (_this._writableState) {
+        _this._writableState.errorEmitted = true;
+      }
+    } else if (cb) {
+      process.nextTick(emitCloseNT, _this);
+      cb(err);
+    } else {
+      process.nextTick(emitCloseNT, _this);
+    }
+  });
+
+  return this;
+}
+
+function emitErrorAndCloseNT(self, err) {
+  emitErrorNT(self, err);
+  emitCloseNT(self);
+}
+
+function emitCloseNT(self) {
+  if (self._writableState && !self._writableState.emitClose) return;
+  if (self._readableState && !self._readableState.emitClose) return;
+  self.emit('close');
+}
+
+function undestroy() {
+  if (this._readableState) {
+    this._readableState.destroyed = false;
+    this._readableState.reading = false;
+    this._readableState.ended = false;
+    this._readableState.endEmitted = false;
+  }
+
+  if (this._writableState) {
+    this._writableState.destroyed = false;
+    this._writableState.ended = false;
+    this._writableState.ending = false;
+    this._writableState.finalCalled = false;
+    this._writableState.prefinished = false;
+    this._writableState.finished = false;
+    this._writableState.errorEmitted = false;
+  }
+}
+
+function emitErrorNT(self, err) {
+  self.emit('error', err);
+}
+
+module.exports = {
+  destroy: destroy,
+  undestroy: undestroy
+};

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/lib/internal/streams/end-of-stream.js

@@ -0,0 +1,104 @@
+// Ported from https://github.com/mafintosh/end-of-stream with
+// permission from the author, Mathias Buus (@mafintosh).
+'use strict';
+
+var ERR_STREAM_PREMATURE_CLOSE = require('../../../errors').codes.ERR_STREAM_PREMATURE_CLOSE;
+
+function once(callback) {
+  var called = false;
+  return function () {
+    if (called) return;
+    called = true;
+
+    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+      args[_key] = arguments[_key];
+    }
+
+    callback.apply(this, args);
+  };
+}
+
+function noop() {}
+
+function isRequest(stream) {
+  return stream.setHeader && typeof stream.abort === 'function';
+}
+
+function eos(stream, opts, callback) {
+  if (typeof opts === 'function') return eos(stream, null, opts);
+  if (!opts) opts = {};
+  callback = once(callback || noop);
+  var readable = opts.readable || opts.readable !== false && stream.readable;
+  var writable = opts.writable || opts.writable !== false && stream.writable;
+
+  var onlegacyfinish = function onlegacyfinish() {
+    if (!stream.writable) onfinish();
+  };
+
+  var writableEnded = stream._writableState && stream._writableState.finished;
+
+  var onfinish = function onfinish() {
+    writable = false;
+    writableEnded = true;
+    if (!readable) callback.call(stream);
+  };
+
+  var readableEnded = stream._readableState && stream._readableState.endEmitted;
+
+  var onend = function onend() {
+    readable = false;
+    readableEnded = true;
+    if (!writable) callback.call(stream);
+  };
+
+  var onerror = function onerror(err) {
+    callback.call(stream, err);
+  };
+
+  var onclose = function onclose() {
+    var err;
+
+    if (readable && !readableEnded) {
+      if (!stream._readableState || !stream._readableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE();
+      return callback.call(stream, err);
+    }
+
+    if (writable && !writableEnded) {
+      if (!stream._writableState || !stream._writableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE();
+      return callback.call(stream, err);
+    }
+  };
+
+  var onrequest = function onrequest() {
+    stream.req.on('finish', onfinish);
+  };
+
+  if (isRequest(stream)) {
+    stream.on('complete', onfinish);
+    stream.on('abort', onclose);
+    if (stream.req) onrequest();else stream.on('request', onrequest);
+  } else if (writable && !stream._writableState) {
+    // legacy streams
+    stream.on('end', onlegacyfinish);
+    stream.on('close', onlegacyfinish);
+  }
+
+  stream.on('end', onend);
+  stream.on('finish', onfinish);
+  if (opts.error !== false) stream.on('error', onerror);
+  stream.on('close', onclose);
+  return function () {
+    stream.removeListener('complete', onfinish);
+    stream.removeListener('abort', onclose);
+    stream.removeListener('request', onrequest);
+    if (stream.req) stream.req.removeListener('finish', onfinish);
+    stream.removeListener('end', onlegacyfinish);
+    stream.removeListener('close', onlegacyfinish);
+    stream.removeListener('finish', onfinish);
+    stream.removeListener('end', onend);
+    stream.removeListener('error', onerror);
+    stream.removeListener('close', onclose);
+  };
+}
+
+module.exports = eos;

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/lib/internal/streams/pipeline.js

@@ -0,0 +1,97 @@
+// Ported from https://github.com/mafintosh/pump with
+// permission from the author, Mathias Buus (@mafintosh).
+'use strict';
+
+var eos;
+
+function once(callback) {
+  var called = false;
+  return function () {
+    if (called) return;
+    called = true;
+    callback.apply(void 0, arguments);
+  };
+}
+
+var _require$codes = require('../../../errors').codes,
+    ERR_MISSING_ARGS = _require$codes.ERR_MISSING_ARGS,
+    ERR_STREAM_DESTROYED = _require$codes.ERR_STREAM_DESTROYED;
+
+function noop(err) {
+  // Rethrow the error if it exists to avoid swallowing it
+  if (err) throw err;
+}
+
+function isRequest(stream) {
+  return stream.setHeader && typeof stream.abort === 'function';
+}
+
+function destroyer(stream, reading, writing, callback) {
+  callback = once(callback);
+  var closed = false;
+  stream.on('close', function () {
+    closed = true;
+  });
+  if (eos === undefined) eos = require('./end-of-stream');
+  eos(stream, {
+    readable: reading,
+    writable: writing
+  }, function (err) {
+    if (err) return callback(err);
+    closed = true;
+    callback();
+  });
+  var destroyed = false;
+  return function (err) {
+    if (closed) return;
+    if (destroyed) return;
+    destroyed = true; // request.destroy just do .end - .abort is what we want
+
+    if (isRequest(stream)) return stream.abort();
+    if (typeof stream.destroy === 'function') return stream.destroy();
+    callback(err || new ERR_STREAM_DESTROYED('pipe'));
+  };
+}
+
+function call(fn) {
+  fn();
+}
+
+function pipe(from, to) {
+  return from.pipe(to);
+}
+
+function popCallback(streams) {
+  if (!streams.length) return noop;
+  if (typeof streams[streams.length - 1] !== 'function') return noop;
+  return streams.pop();
+}
+
+function pipeline() {
+  for (var _len = arguments.length, streams = new Array(_len), _key = 0; _key < _len; _key++) {
+    streams[_key] = arguments[_key];
+  }
+
+  var callback = popCallback(streams);
+  if (Array.isArray(streams[0])) streams = streams[0];
+
+  if (streams.length < 2) {
+    throw new ERR_MISSING_ARGS('streams');
+  }
+
+  var error;
+  var destroys = streams.map(function (stream, i) {
+    var reading = i < streams.length - 1;
+    var writing = i > 0;
+    return destroyer(stream, reading, writing, function (err) {
+      if (!error) error = err;
+      if (err) destroys.forEach(call);
+      if (reading) return;
+      destroys.forEach(call);
+      callback(error);
+    });
+  });
+  return streams.reduce(pipe);
+}
+
+module.exports = pipeline;

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/lib/internal/streams/state.js

@@ -0,0 +1,27 @@
+'use strict';
+
+var ERR_INVALID_OPT_VALUE = require('../../../errors').codes.ERR_INVALID_OPT_VALUE;
+
+function highWaterMarkFrom(options, isDuplex, duplexKey) {
+  return options.highWaterMark != null ? options.highWaterMark : isDuplex ? options[duplexKey] : null;
+}
+
+function getHighWaterMark(state, options, duplexKey, isDuplex) {
+  var hwm = highWaterMarkFrom(options, isDuplex, duplexKey);
+
+  if (hwm != null) {
+    if (!(isFinite(hwm) && Math.floor(hwm) === hwm) || hwm < 0) {
+      var name = isDuplex ? duplexKey : 'highWaterMark';
+      throw new ERR_INVALID_OPT_VALUE(name, hwm);
+    }
+
+    return Math.floor(hwm);
+  } // Default value
+
+
+  return state.objectMode ? 16 : 16 * 1024;
+}
+
+module.exports = {
+  getHighWaterMark: getHighWaterMark
+};

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/lib/internal/streams/stream-browser.js

@@ -0,0 +1 @@
+module.exports = require('events').EventEmitter;

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/lib/internal/streams/stream.js

@@ -0,0 +1 @@
+module.exports = require('stream');

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/node_modules/inherits/LICENSE

@@ -0,0 +1,16 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
+

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/node_modules/inherits/README.md

@@ -0,0 +1,42 @@
+Browser-friendly inheritance fully compatible with standard node.js
+[inherits](http://nodejs.org/api/util.html#util_util_inherits_constructor_superconstructor).
+
+This package exports standard `inherits` from node.js `util` module in
+node environment, but also provides alternative browser-friendly
+implementation through [browser
+field](https://gist.github.com/shtylman/4339901). Alternative
+implementation is a literal copy of standard one located in standalone
+module to avoid requiring of `util`. It also has a shim for old
+browsers with no `Object.create` support.
+
+While keeping you sure you are using standard `inherits`
+implementation in node.js environment, it allows bundlers such as
+[browserify](https://github.com/substack/node-browserify) to not
+include full `util` package to your client code if all you need is
+just `inherits` function. It worth, because browser shim for `util`
+package is large and `inherits` is often the single function you need
+from it.
+
+It's recommended to use this package instead of
+`require('util').inherits` for any code that has chances to be used
+not only in node.js but in browser too.
+
+## usage
+
+```js
+var inherits = require('inherits');
+// then use exactly as the standard one
+```
+
+## note on version ~1.0
+
+Version ~1.0 had completely different motivation and is not compatible
+neither with 2.0 nor with standard node.js `inherits`.
+
+If you are using version ~1.0 and planning to switch to ~2.0, be
+careful:
+
+* new version uses `super_` instead of `super` for referencing
+  superclass
+* new version overwrites current prototype while old one preserves any
+  existing fields on it

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/node_modules/inherits/inherits.js

@@ -0,0 +1,9 @@
+try {
+  var util = require('util');
+  /* istanbul ignore next */
+  if (typeof util.inherits !== 'function') throw '';
+  module.exports = util.inherits;
+} catch (e) {
+  /* istanbul ignore next */
+  module.exports = require('./inherits_browser.js');
+}

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/node_modules/inherits/inherits_browser.js

@@ -0,0 +1,27 @@
+if (typeof Object.create === 'function') {
+  // implementation from standard node.js 'util' module
+  module.exports = function inherits(ctor, superCtor) {
+    if (superCtor) {
+      ctor.super_ = superCtor
+      ctor.prototype = Object.create(superCtor.prototype, {
+        constructor: {
+          value: ctor,
+          enumerable: false,
+          writable: true,
+          configurable: true
+        }
+      })
+    }
+  };
+} else {
+  // old school shim for old browsers
+  module.exports = function inherits(ctor, superCtor) {
+    if (superCtor) {
+      ctor.super_ = superCtor
+      var TempCtor = function () {}
+      TempCtor.prototype = superCtor.prototype
+      ctor.prototype = new TempCtor()
+      ctor.prototype.constructor = ctor
+    }
+  }
+}

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/node_modules/inherits/package.json

@@ -0,0 +1,61 @@
+{
+  "_from": "inherits@^2.0.3",
+  "_id": "inherits@2.0.4",
+  "_inBundle": false,
+  "_integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
+  "_location": "/htmlparser2/readable-stream/inherits",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "inherits@^2.0.3",
+    "name": "inherits",
+    "escapedName": "inherits",
+    "rawSpec": "^2.0.3",
+    "saveSpec": null,
+    "fetchSpec": "^2.0.3"
+  },
+  "_requiredBy": [
+    "/htmlparser2/readable-stream"
+  ],
+  "_resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+  "_shasum": "0fa2c64f932917c3433a0ded55363aae37416b7c",
+  "_spec": "inherits@^2.0.3",
+  "_where": "/root/.node-red/node_modules/htmlparser2/node_modules/readable-stream",
+  "browser": "./inherits_browser.js",
+  "bugs": {
+    "url": "https://github.com/isaacs/inherits/issues"
+  },
+  "bundleDependencies": false,
+  "deprecated": false,
+  "description": "Browser-friendly inheritance fully compatible with standard node.js inherits()",
+  "devDependencies": {
+    "tap": "^14.2.4"
+  },
+  "files": [
+    "inherits.js",
+    "inherits_browser.js"
+  ],
+  "homepage": "https://github.com/isaacs/inherits#readme",
+  "keywords": [
+    "inheritance",
+    "class",
+    "klass",
+    "oop",
+    "object-oriented",
+    "inherits",
+    "browser",
+    "browserify"
+  ],
+  "license": "ISC",
+  "main": "./inherits.js",
+  "name": "inherits",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/isaacs/inherits.git"
+  },
+  "scripts": {
+    "test": "tap"
+  },
+  "version": "2.0.4"
+}

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/package.json

@@ -0,0 +1,95 @@
+{
+  "_from": "readable-stream@^3.1.1",
+  "_id": "readable-stream@3.4.0",
+  "_inBundle": false,
+  "_integrity": "sha512-jItXPLmrSR8jmTRmRWJXCnGJsfy85mB3Wd/uINMXA65yrnFo0cPClFIUWzo2najVNSl+mx7/4W8ttlLWJe99pQ==",
+  "_location": "/htmlparser2/readable-stream",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "readable-stream@^3.1.1",
+    "name": "readable-stream",
+    "escapedName": "readable-stream",
+    "rawSpec": "^3.1.1",
+    "saveSpec": null,
+    "fetchSpec": "^3.1.1"
+  },
+  "_requiredBy": [
+    "/htmlparser2"
+  ],
+  "_resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.4.0.tgz",
+  "_shasum": "a51c26754658e0a3c21dbf59163bd45ba6f447fc",
+  "_spec": "readable-stream@^3.1.1",
+  "_where": "/root/.node-red/node_modules/htmlparser2",
+  "browser": {
+    "util": false,
+    "worker_threads": false,
+    "./errors": "./errors-browser.js",
+    "./readable.js": "./readable-browser.js",
+    "./lib/internal/streams/stream.js": "./lib/internal/streams/stream-browser.js"
+  },
+  "bugs": {
+    "url": "https://github.com/nodejs/readable-stream/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "inherits": "^2.0.3",
+    "string_decoder": "^1.1.1",
+    "util-deprecate": "^1.0.1"
+  },
+  "deprecated": false,
+  "description": "Streams3, a user-land copy of the stream library from Node.js",
+  "devDependencies": {
+    "@babel/cli": "^7.2.0",
+    "@babel/core": "^7.2.0",
+    "@babel/polyfill": "^7.0.0",
+    "@babel/preset-env": "^7.2.0",
+    "airtap": "0.0.9",
+    "assert": "^1.4.0",
+    "bl": "^2.0.0",
+    "deep-strict-equal": "^0.2.0",
+    "glob": "^7.1.2",
+    "gunzip-maybe": "^1.4.1",
+    "hyperquest": "^2.1.3",
+    "lolex": "^2.6.0",
+    "nyc": "^11.0.0",
+    "pump": "^3.0.0",
+    "rimraf": "^2.6.2",
+    "tap": "^12.0.0",
+    "tape": "^4.9.0",
+    "tar-fs": "^1.16.2",
+    "util-promisify": "^2.1.0"
+  },
+  "engines": {
+    "node": ">= 6"
+  },
+  "homepage": "https://github.com/nodejs/readable-stream#readme",
+  "keywords": [
+    "readable",
+    "stream",
+    "pipe"
+  ],
+  "license": "MIT",
+  "main": "readable.js",
+  "name": "readable-stream",
+  "nyc": {
+    "include": [
+      "lib/**.js"
+    ]
+  },
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/nodejs/readable-stream.git"
+  },
+  "scripts": {
+    "ci": "TAP=1 tap --no-esm test/parallel/*.js test/ours/*.js | tee test.tap",
+    "cover": "nyc npm test",
+    "report": "nyc report --reporter=lcov",
+    "test": "tap -J --no-esm test/parallel/*.js test/ours/*.js",
+    "test-browser-local": "airtap --open --local -- test/browser.js",
+    "test-browsers": "airtap --sauce-connect --loopback airtap.local -- test/browser.js",
+    "update-browser-errors": "babel -o errors-browser.js errors.js"
+  },
+  "version": "3.4.0"
+}

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/readable-browser.js

@@ -0,0 +1,9 @@
+exports = module.exports = require('./lib/_stream_readable.js');
+exports.Stream = exports;
+exports.Readable = exports;
+exports.Writable = require('./lib/_stream_writable.js');
+exports.Duplex = require('./lib/_stream_duplex.js');
+exports.Transform = require('./lib/_stream_transform.js');
+exports.PassThrough = require('./lib/_stream_passthrough.js');
+exports.finished = require('./lib/internal/streams/end-of-stream.js');
+exports.pipeline = require('./lib/internal/streams/pipeline.js');

nodered/rootfs/data/node_modules/htmlparser2/node_modules/readable-stream/readable.js

@@ -0,0 +1,16 @@
+var Stream = require('stream');
+if (process.env.READABLE_STREAM === 'disable' && Stream) {
+  module.exports = Stream.Readable;
+  Object.assign(module.exports, Stream);
+  module.exports.Stream = Stream;
+} else {
+  exports = module.exports = require('./lib/_stream_readable.js');
+  exports.Stream = Stream || exports;
+  exports.Readable = exports;
+  exports.Writable = require('./lib/_stream_writable.js');
+  exports.Duplex = require('./lib/_stream_duplex.js');
+  exports.Transform = require('./lib/_stream_transform.js');
+  exports.PassThrough = require('./lib/_stream_passthrough.js');
+  exports.finished = require('./lib/internal/streams/end-of-stream.js');
+  exports.pipeline = require('./lib/internal/streams/pipeline.js');
+}

nodered/rootfs/data/node_modules/htmlparser2/package.json

@@ -0,0 +1,90 @@
+{
+  "_from": "htmlparser2@^3.9.1",
+  "_id": "htmlparser2@3.10.1",
+  "_inBundle": false,
+  "_integrity": "sha512-IgieNijUMbkDovyoKObU1DUhm1iwNYE/fuifEoEHfd1oZKZDaONBSkal7Y01shxsM49R4XaMdGez3WnF9UfiCQ==",
+  "_location": "/htmlparser2",
+  "_phantomChildren": {
+    "string_decoder": "1.1.1",
+    "util-deprecate": "1.0.2"
+  },
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "htmlparser2@^3.9.1",
+    "name": "htmlparser2",
+    "escapedName": "htmlparser2",
+    "rawSpec": "^3.9.1",
+    "saveSpec": null,
+    "fetchSpec": "^3.9.1"
+  },
+  "_requiredBy": [
+    "/cheerio"
+  ],
+  "_resolved": "https://registry.npmjs.org/htmlparser2/-/htmlparser2-3.10.1.tgz",
+  "_shasum": "bd679dc3f59897b6a34bb10749c855bb53a9392f",
+  "_spec": "htmlparser2@^3.9.1",
+  "_where": "/root/.node-red/node_modules/cheerio",
+  "author": {
+    "name": "Felix Boehm",
+    "email": "me@feedic.com"
+  },
+  "browser": {
+    "readable-stream": false
+  },
+  "bugs": {
+    "url": "http://github.com/fb55/htmlparser2/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "domelementtype": "^1.3.1",
+    "domhandler": "^2.3.0",
+    "domutils": "^1.5.1",
+    "entities": "^1.1.1",
+    "inherits": "^2.0.1",
+    "readable-stream": "^3.1.1"
+  },
+  "deprecated": false,
+  "description": "Fast & forgiving HTML/XML/RSS parser",
+  "devDependencies": {
+    "coveralls": "^3.0.1",
+    "eslint": "^5.13.0",
+    "istanbul": "^0.4.3",
+    "mocha": "^5.2.0",
+    "mocha-lcov-reporter": "^1.2.0"
+  },
+  "directories": {
+    "lib": "lib/"
+  },
+  "files": [
+    "lib"
+  ],
+  "homepage": "https://github.com/fb55/htmlparser2#readme",
+  "keywords": [
+    "html",
+    "parser",
+    "streams",
+    "xml",
+    "dom",
+    "rss",
+    "feed",
+    "atom"
+  ],
+  "license": "MIT",
+  "main": "lib/index.js",
+  "name": "htmlparser2",
+  "prettier": {
+    "tabWidth": 4
+  },
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/fb55/htmlparser2.git"
+  },
+  "scripts": {
+    "coveralls": "npm run lint && npm run lcov && (cat coverage/lcov.info | coveralls || exit 0)",
+    "lcov": "istanbul cover _mocha --report lcovonly -- -R spec",
+    "lint": "eslint lib test",
+    "test": "mocha && npm run lint"
+  },
+  "version": "3.10.1"
+}