Client update

See changelog.md

CHANGELOG.md

@@ -3,6 +3,22 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+## [2.1.91 pre 2.2] - 2019-08-17
+### Added
+- (Client) Markdown engine
+- (Client) Imgur based image posting (through markdown)
+
+### Changed
+- (Client) Removed cloudflare references making hack.chat is self-hosted again
+- (Client) The way messages are pushed, closing an xss vuln in PRs 985dd6f and 9fcb235
+- (Client) Side bar layout
+- (Client) Fixed some options not storing
+- (Client) Fixed firefox drop down menu bug
+- (Client) Updated Katex lib
+
+### Stretched
+- The term "minimal"
+
 ## [2.1.9 pre 2.2] - 2019-03-18
 ### Changed
 - Configuration script setup, making it more portable/sane

client/audio/index.html

@@ -0,0 +1 @@
+

client/client.js

@@ -7,6 +7,103 @@
  *
 */
 
+// initialize markdown engine
+var markdownOptions = {
+	html: false,
+	xhtmlOut: false,
+	breaks: true,
+	langPrefix: '',
+	linkify: true,
+	linkTarget: '_blank" rel="noreferrer',
+	typographer:  true,
+	quotes: `""''`,
+
+	doHighlight: true,
+	highlight: function (str, lang) {
+		if (!markdownOptions.doHighlight || !window.hljs) { return ''; }
+
+		if (lang && hljs.getLanguage(lang)) {
+			try {
+				return hljs.highlight(lang, str).value;
+			} catch (__) {}
+		}
+
+		try {
+			return hljs.highlightAuto(str).value;
+		} catch (__) {}
+
+		return '';
+	}
+};
+
+var md = new Remarkable('full', markdownOptions);
+
+// image handler
+var allowImages = false;
+var imgHostWhitelist = [
+	'i.imgur.com',
+	'imgur.com',
+];
+
+function getDomain(link) {
+	var a = document.createElement('a');
+	a.href = link;
+	return a.hostname;
+}
+
+function isWhiteListed(link) {
+	return imgHostWhitelist.indexOf(getDomain(link)) !== -1;
+}
+
+md.renderer.rules.image = function (tokens, idx, options) {
+	var src = Remarkable.utils.escapeHtml(tokens[idx].src);
+
+	if (isWhiteListed(src) && allowImages) {
+		var imgSrc = ' src="' + Remarkable.utils.escapeHtml(tokens[idx].src) + '"';
+		var title = tokens[idx].title ? (' title="' + Remarkable.utils.escapeHtml(Remarkable.utils.replaceEntities(tokens[idx].title)) + '"') : '';
+		var alt = ' alt="' + (tokens[idx].alt ? Remarkable.utils.escapeHtml(Remarkable.utils.replaceEntities(Remarkable.utils.unescapeMd(tokens[idx].alt))) : '') + '"';
+		var suffix = options.xhtmlOut ? ' /' : '';
+		var scrollOnload = isAtBottom() ? ' onload="window.scrollTo(0, document.body.scrollHeight)"' : '';
+		return '<a href="' + src + '" target="_blank" rel="noreferrer"><img' + scrollOnload + imgSrc + alt + title + suffix + '></a>';
+	}
+
+  return '<a href="' + src + '" target="_blank" rel="noreferrer">' + Remarkable.utils.escapeHtml(Remarkable.utils.replaceEntities(src)) + '</a>';
+};
+
+md.renderer.rules.link_open = function (tokens, idx, options) {
+	var title = tokens[idx].title ? (' title="' + Remarkable.utils.escapeHtml(Remarkable.utils.replaceEntities(tokens[idx].title)) + '"') : '';
+  var target = options.linkTarget ? (' target="' + options.linkTarget + '"') : '';
+  return '<a rel="noreferrer" onclick="return verifyLink(this)" href="' + Remarkable.utils.escapeHtml(tokens[idx].href) + '"' + title + target + '>';
+};
+
+md.renderer.rules.text = function(tokens, idx) {
+	tokens[idx].content = Remarkable.utils.escapeHtml(tokens[idx].content);
+
+	if (tokens[idx].content.indexOf('?') !== -1) {
+		tokens[idx].content = tokens[idx].content.replace(/(^|\s)(\?)\S+?(?=[,.!?:)]?\s|$)/gm, function(match) {
+			var channelLink = Remarkable.utils.escapeHtml(Remarkable.utils.replaceEntities(match.trim()));
+			var whiteSpace = '';
+			if (match[0] !== '?') {
+				whiteSpace = match[0];
+			}
+			return whiteSpace + '<a href="' + channelLink + '" target="_blank">' + channelLink + '</a>';
+		});
+	}
+
+  return tokens[idx].content;
+};
+
+md.use(remarkableKatex);
+
+function verifyLink(link) {
+	var linkHref = Remarkable.utils.escapeHtml(Remarkable.utils.replaceEntities(link.href));
+	if (linkHref !== link.innerHTML) {
+		return confirm('Warning, please verify this is where you want to go: ' + linkHref);
+	}
+
+	return true;
+}
+
 var verifyNickname = function (nick) {
 	return /^[a-zA-Z0-9_]{1,24}$/.test(nick);
 }
@@ -67,7 +164,6 @@ var myChannel = window.location.search.replace(/^\?/, '');
 var lastSent = [""];
 var lastSentPos = 0;
 
-
 /** Notification switch and local storage behavior **/
 var notifySwitch = document.getElementById("notify-switch")
 var notifySetting = localStorageGet("notify-api")
@@ -118,7 +214,6 @@ function RequestNotifyPermission() {
 	}
 }
 
-
 // Update localStorage with value of checkbox
 notifySwitch.addEventListener('change', (event) => {
 	if (event.target.checked) {
@@ -138,7 +233,6 @@ if (notifySetting === "true" || notifySetting === true) {
 	notifySwitch.checked = false
 }
 
-
 /** Sound switch and local storage behavior **/
 var soundSwitch = document.getElementById("sound-switch")
 var notifySetting = localStorageGet("notify-sound")
@@ -159,8 +253,6 @@ if (notifySetting === "true" || notifySetting === true) {
 	soundSwitch.checked = false
 }
 
-
-
 // Create a new notification after checking if permission has been granted
 function spawnNotification(title, body) {
 	// Let's check if the browser supports notifications
@@ -184,12 +276,11 @@ function spawnNotification(title, body) {
 			var n = new Notification(title, options);
 		}
 	} else if (Notification.permission == "denied") {
-		// At last, if the user has denied notifications, and you 
+		// At last, if the user has denied notifications, and you
 		// want to be respectful, there is no need to bother them any more.
 	}
 }
 
-
 function notify(args) {
 	// Spawn notification if enabled
 	if (notifySwitch.checked) {
@@ -320,7 +411,6 @@ function pushMessage(args) {
 			((args.type === "whisper" || args.type === "invite") && args.from)
 		)
 	) {
-		messageEl.classList.add('refmessage');
 		notify(args);
 	}
 
@@ -365,41 +455,10 @@ function pushMessage(args) {
 	}
 
 	// Text
-	var textEl = document.createElement('pre');
+	var textEl = document.createElement('p');
 	textEl.classList.add('text');
+	textEl.innerHTML = md.render(args.text);
 
-        textEl.textContent = args.text || '';
-        
-	if($('#syntax-highlight').checked && textEl.textContent.includes('```')) {
-            var textParts = textEl.textContent.split('```');
-            var ignore = 0;
-            textEl.innerHTML = '';
-            for(var i=0; i< textParts.length; i++) {
-                if(i==ignore) {
-                    textEl.innerHTML += parseLatex(textParts[i]);
-                    continue;
-                }
-                var lang = textParts[i].split(/\s+/g)[0];
-                if(lang == '') {
-                    textEl.innerHTML += parseLatex('```' + textParts[i]);
-                    continue;
-                }
-                
-                var codeEl = document.createElement('code');
-                codeEl.classList.add(lang);
-                codeEl.textContent = textParts[i].replace(lang, '').trim();
-                hljs.highlightBlock(codeEl);
-                
-                textEl.innerHTML += codeEl.outerHTML.toString();
-                ignore = i+1;
-            }
-        } else {
-            var parsed = parseLatex(textEl.textContent);
-            if(parsed != null)
-                textEl.innerHTML = parsed;
-	}
-        textEl.innerHTML = textEl.innerHTML.replace(/(\?|https?:\/\/)\S+?(?=[,.!?:)]?\s|$)/g, parseLinks);
-        
 	messageEl.appendChild(textEl);
 
 	// Scroll to bottom
@@ -413,27 +472,6 @@ function pushMessage(args) {
 	updateTitle();
 }
 
-function parseLatex(str) {
-    if ($('#parse-latex').checked) {
-        // Temporary hotfix for \rule spamming, see https://github.com/Khan/KaTeX/issues/109
-        str = str.replace(/\\rule|\\\\\s*\[.*?\]/g, '');
-        var holEl = document.createElement('p');
-        holEl.textContent = str;
-        try {
-            renderMathInElement(holEl, {
-                delimiters: [
-                    { left: "$$", right: "$$", display: true },
-                    { left: "$", right: "$", display: false },
-                ]
-            });
-            return holEl.innerHTML.toString();
-        } catch (e) {
-            console.warn(e);
-        }
-    }
-    return null;
-}
-
 function insertAtCursor(text) {
 	var input = $('#chatinput');
 	var start = input.selectionStart || 0;
@@ -453,19 +491,6 @@ function send(data) {
 	}
 }
 
-function parseLinks(g0) {
-	var a = document.createElement('a');
-
-	a.innerHTML = g0;
-
-	var url = a.textContent;
-
-	a.href = url;
-	a.target = '_blank';
-
-	return a.outerHTML;
-}
-
 var windowActive = true;
 var unread = 0;
 
@@ -620,7 +645,6 @@ $('#chatinput').oninput = function () {
 
 updateInputSize();
 
-
 /* sidebar */
 
 $('#sidebar').onmouseenter = $('#sidebar').ontouchstart = function (e) {
@@ -629,7 +653,14 @@ $('#sidebar').onmouseenter = $('#sidebar').ontouchstart = function (e) {
 	e.stopPropagation();
 }
 
-$('#sidebar').onmouseleave = document.ontouchstart = function () {
+$('#sidebar').onmouseleave = document.ontouchstart = function (event) {
+	var e = event.toElement || event.relatedTarget;
+	try {
+		if (e.parentNode == this || e == this) {
+	     return;
+	  }
+	} catch (e) { return; }
+
 	if (!$('#pin-sidebar').checked) {
 		$('#sidebar-content').classList.add('hidden');
 		$('#sidebar').classList.remove('expand');
@@ -639,9 +670,7 @@ $('#sidebar').onmouseleave = document.ontouchstart = function () {
 $('#clear-messages').onclick = function () {
 	// Delete children elements
 	var messages = $('#messages');
-	while (messages.firstChild) {
-		messages.removeChild(messages.firstChild);
-	}
+	messages.innerHTML = '';
 }
 
 // Restore settings from localStorage
@@ -657,6 +686,8 @@ if (localStorageGet('joined-left') == 'false') {
 
 if (localStorageGet('parse-latex') == 'false') {
 	$('#parse-latex').checked = false;
+	md.inline.ruler.disable([ 'katex' ]);
+	md.block.ruler.disable([ 'katex' ]);
 }
 
 $('#pin-sidebar').onchange = function (e) {
@@ -668,7 +699,37 @@ $('#joined-left').onchange = function (e) {
 }
 
 $('#parse-latex').onchange = function (e) {
-	localStorageSet('parse-latex', !!e.target.checked);
+	var enabled = !!e.target.checked;
+	localStorageSet('parse-latex', enabled);
+	if (enabled) {
+		md.inline.ruler.enable([ 'katex' ]);
+		md.block.ruler.enable([ 'katex' ]);
+	} else {
+		md.inline.ruler.disable([ 'katex' ]);
+		md.block.ruler.disable([ 'katex' ]);
+	}
+}
+
+if (localStorageGet('syntax-highlight') == 'false') {
+	$('#syntax-highlight').checked = false;
+	markdownOptions.doHighlight = false;
+}
+
+$('#syntax-highlight').onchange = function (e) {
+	var enabled = !!e.target.checked;
+	localStorageSet('syntax-highlight', enabled);
+	markdownOptions.doHighlight = enabled;
+}
+
+if (localStorageGet('allow-imgur') == 'false') {
+	$('#allow-imgur').checked = false;
+	allowImages = false;
+}
+
+$('#allow-imgur').onchange = function (e) {
+	var enabled = !!e.target.checked;
+	localStorageSet('allow-imgur', enabled);
+	allowImages = enabled;
 }
 
 // User list
@@ -772,7 +833,7 @@ function setScheme(scheme) {
 
 function setHighlight(scheme) {
 	currentHighlight = scheme;
-	$('#highlight-link').href = "//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/" + scheme + ".min.css";
+	$('#highlight-link').href = "vendor/hljs/styles/" + scheme + ".min.css";
 	localStorageSet('highlight', scheme);
 }
 

client/imgs/index.html

@@ -0,0 +1 @@
+

client/index.html

@@ -5,14 +5,18 @@
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <meta charset="utf-8">
   <title>hack.chat</title>
-  <link rel="stylesheet" href="style.css">
-  <link rel="stylesheet" href="katex/katex.min.css">
-  <link id="scheme-link" rel="stylesheet" href="schemes/atelier-dune.css">
-  <script src="katex/katex.min.js"></script>
-  <script src="katex/contrib/auto-render.min.js"></script>
-  <link id="highlight-link" rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/hybrid.min.css">
   <link rel="manifest" href="manifest.json">
-  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+
+  <link rel="stylesheet" href="style.css">
+  <link id="scheme-link" rel="stylesheet" href="schemes/atelier-dune.css">
+
+  <link rel="stylesheet" href="vendor/katex/katex.min.css">
+  <script src="vendor/katex/katex.min.js"></script>
+  <script src="vendor/remarkable-katex/remarkableKatex.min.js"></script>
+
+  <script src="vendor/hljs/highlight.min.js"></script>
+  <link id="highlight-link" rel="stylesheet" href="vendor/hljs/styles/hybrid.min.css">
+  <script src="vendor/remarkable/remarkable.min.js"></script>
 </head>
 
 <body>
@@ -31,11 +35,11 @@
   </footer>
   <nav id="sidebar">
     <div id="sidebar-content" class="hidden">
+      <h4>Settings</h4>
       <p>
         <input id="pin-sidebar" type="checkbox">
         <label for="pin-sidebar">Pin sidebar</label>
       </p>
-      <h4>Settings</h4>
       <p>
         <input id="sound-switch" type="checkbox">
         <label for="sound-switch">Sound notifications</label>
@@ -50,19 +54,30 @@
       </p>
       <p>
         <input id="parse-latex" type="checkbox" checked>
-        <label for="parse-latex">Parse LaTeX</label>
+        <label for="parse-latex">Allow LaTeX</label>
       </p>
+      <p>
+        <input id="syntax-highlight" type="checkbox" checked>
+        <label for="syntax-highlight">Allow Highlight</label>
+      </p>
+      <p>
+        <input id="allow-imgur" type="checkbox">
+        <label for="allow-imgur" title="Embed images like: ![Title](https://i.imgur.com/image.png)">Allow Imgur</label>
+      </p>
+      <hr>
+      <p>
+        <h4>Color scheme</h4>
+        <select id="scheme-selector"></select>
+      </p>
+      <p>
+        <h4>Highlight scheme</h4>
+        <select id="highlight-selector"></select>
+      </p>
+      <hr>
       <p>
         <button id="clear-messages">Clear all messages</button>
       </p>
-      <h4>Color scheme</h4>
-      <select id="scheme-selector"></select>
-      <p>
-        <input id="syntax-highlight" type="checkbox" checked>
-        <label for="syntax-highlight">Syntax Highlight</label>
-      </p>
-      <h4>Highlight scheme</h4>
-      <select id="highlight-selector"></select>
+      <hr>
       <h4>Users online</h4>
       <p>(Click user to invite)</p>
       <ul id="users"></ul>

client/katex/contrib/auto-render.js

@@ -1,790 +0,0 @@
-(function webpackUniversalModuleDefinition(root, factory) {
-	if(typeof exports === 'object' && typeof module === 'object')
-		module.exports = factory(require("katex"));
-	else if(typeof define === 'function' && define.amd)
-		define(["katex"], factory);
-	else if(typeof exports === 'object')
-		exports["renderMathInElement"] = factory(require("katex"));
-	else
-		root["renderMathInElement"] = factory(root["katex"]);
-})(this, function(__WEBPACK_EXTERNAL_MODULE_38__) {
-return /******/ (function(modules) { // webpackBootstrap
-/******/ 	// The module cache
-/******/ 	var installedModules = {};
-/******/
-/******/ 	// The require function
-/******/ 	function __webpack_require__(moduleId) {
-/******/
-/******/ 		// Check if module is in cache
-/******/ 		if(installedModules[moduleId]) {
-/******/ 			return installedModules[moduleId].exports;
-/******/ 		}
-/******/ 		// Create a new module (and put it into the cache)
-/******/ 		var module = installedModules[moduleId] = {
-/******/ 			i: moduleId,
-/******/ 			l: false,
-/******/ 			exports: {}
-/******/ 		};
-/******/
-/******/ 		// Execute the module function
-/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
-/******/
-/******/ 		// Flag the module as loaded
-/******/ 		module.l = true;
-/******/
-/******/ 		// Return the exports of the module
-/******/ 		return module.exports;
-/******/ 	}
-/******/
-/******/
-/******/ 	// expose the modules object (__webpack_modules__)
-/******/ 	__webpack_require__.m = modules;
-/******/
-/******/ 	// expose the module cache
-/******/ 	__webpack_require__.c = installedModules;
-/******/
-/******/ 	// define getter function for harmony exports
-/******/ 	__webpack_require__.d = function(exports, name, getter) {
-/******/ 		if(!__webpack_require__.o(exports, name)) {
-/******/ 			Object.defineProperty(exports, name, {
-/******/ 				configurable: false,
-/******/ 				enumerable: true,
-/******/ 				get: getter
-/******/ 			});
-/******/ 		}
-/******/ 	};
-/******/
-/******/ 	// getDefaultExport function for compatibility with non-harmony modules
-/******/ 	__webpack_require__.n = function(module) {
-/******/ 		var getter = module && module.__esModule ?
-/******/ 			function getDefault() { return module['default']; } :
-/******/ 			function getModuleExports() { return module; };
-/******/ 		__webpack_require__.d(getter, 'a', getter);
-/******/ 		return getter;
-/******/ 	};
-/******/
-/******/ 	// Object.prototype.hasOwnProperty.call
-/******/ 	__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
-/******/
-/******/ 	// __webpack_public_path__
-/******/ 	__webpack_require__.p = "";
-/******/
-/******/ 	// Load entry module and return exports
-/******/ 	return __webpack_require__(__webpack_require__.s = 9);
-/******/ })
-/************************************************************************/
-/******/ ([
-/* 0 */
-/***/ (function(module, exports) {
-
-// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
-var global = module.exports = typeof window != 'undefined' && window.Math == Math
-  ? window : typeof self != 'undefined' && self.Math == Math ? self : Function('return this')();
-if(typeof __g == 'number')__g = global; // eslint-disable-line no-undef
-
-/***/ }),
-/* 1 */
-/***/ (function(module, exports) {
-
-module.exports = function(it){
-  return typeof it === 'object' ? it !== null : typeof it === 'function';
-};
-
-/***/ }),
-/* 2 */
-/***/ (function(module, exports, __webpack_require__) {
-
-// Thank's IE8 for his funny defineProperty
-module.exports = !__webpack_require__(3)(function(){
-  return Object.defineProperty({}, 'a', {get: function(){ return 7; }}).a != 7;
-});
-
-/***/ }),
-/* 3 */
-/***/ (function(module, exports) {
-
-module.exports = function(exec){
-  try {
-    return !!exec();
-  } catch(e){
-    return true;
-  }
-};
-
-/***/ }),
-/* 4 */
-/***/ (function(module, exports) {
-
-var core = module.exports = {version: '2.4.0'};
-if(typeof __e == 'number')__e = core; // eslint-disable-line no-undef
-
-/***/ }),
-/* 5 */
-/***/ (function(module, exports, __webpack_require__) {
-
-// to indexed object, toObject with fallback for non-array-like ES3 strings
-var IObject = __webpack_require__(6)
-  , defined = __webpack_require__(7);
-module.exports = function(it){
-  return IObject(defined(it));
-};
-
-/***/ }),
-/* 6 */
-/***/ (function(module, exports, __webpack_require__) {
-
-// fallback for non-array-like ES3 and non-enumerable old V8 strings
-var cof = __webpack_require__(27);
-module.exports = Object('z').propertyIsEnumerable(0) ? Object : function(it){
-  return cof(it) == 'String' ? it.split('') : Object(it);
-};
-
-/***/ }),
-/* 7 */
-/***/ (function(module, exports) {
-
-// 7.2.1 RequireObjectCoercible(argument)
-module.exports = function(it){
-  if(it == undefined)throw TypeError("Can't call method on  " + it);
-  return it;
-};
-
-/***/ }),
-/* 8 */
-/***/ (function(module, exports) {
-
-// 7.1.4 ToInteger
-var ceil  = Math.ceil
-  , floor = Math.floor;
-module.exports = function(it){
-  return isNaN(it = +it) ? 0 : (it > 0 ? floor : ceil)(it);
-};
-
-/***/ }),
-/* 9 */
-/***/ (function(module, __webpack_exports__, __webpack_require__) {
-
-"use strict";
-Object.defineProperty(__webpack_exports__, "__esModule", { value: true });
-/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_babel_runtime_core_js_object_assign__ = __webpack_require__(10);
-/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_babel_runtime_core_js_object_assign___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_babel_runtime_core_js_object_assign__);
-/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_katex__ = __webpack_require__(38);
-/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1_katex___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_katex__);
-/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2__splitAtDelimiters__ = __webpack_require__(39);
-
-/* eslint no-console:0 */
-
-
-
-
-var splitWithDelimiters = function splitWithDelimiters(text, delimiters) {
-    var data = [{ type: "text", data: text }];
-    for (var i = 0; i < delimiters.length; i++) {
-        var delimiter = delimiters[i];
-        data = Object(__WEBPACK_IMPORTED_MODULE_2__splitAtDelimiters__["a" /* default */])(data, delimiter.left, delimiter.right, delimiter.display || false);
-    }
-    return data;
-};
-
-/* Note: optionsCopy is mutated by this method. If it is ever exposed in the
- * API, we should copy it before mutating.
- */
-var renderMathInText = function renderMathInText(text, optionsCopy) {
-    var data = splitWithDelimiters(text, optionsCopy.delimiters);
-    var fragment = document.createDocumentFragment();
-
-    for (var i = 0; i < data.length; i++) {
-        if (data[i].type === "text") {
-            fragment.appendChild(document.createTextNode(data[i].data));
-        } else {
-            var span = document.createElement("span");
-            var math = data[i].data;
-            // Override any display mode defined in the settings with that
-            // defined by the text itself
-            optionsCopy.displayMode = data[i].display;
-            try {
-                __WEBPACK_IMPORTED_MODULE_1_katex___default.a.render(math, span, optionsCopy);
-            } catch (e) {
-                if (!(e instanceof __WEBPACK_IMPORTED_MODULE_1_katex___default.a.ParseError)) {
-                    throw e;
-                }
-                optionsCopy.errorCallback("KaTeX auto-render: Failed to parse `" + data[i].data + "` with ", e);
-                fragment.appendChild(document.createTextNode(data[i].rawData));
-                continue;
-            }
-            fragment.appendChild(span);
-        }
-    }
-
-    return fragment;
-};
-
-var renderElem = function renderElem(elem, optionsCopy) {
-    for (var i = 0; i < elem.childNodes.length; i++) {
-        var childNode = elem.childNodes[i];
-        if (childNode.nodeType === 3) {
-            // Text node
-            var frag = renderMathInText(childNode.textContent, optionsCopy);
-            i += frag.childNodes.length - 1;
-            elem.replaceChild(frag, childNode);
-        } else if (childNode.nodeType === 1) {
-            // Element node
-            var shouldRender = optionsCopy.ignoredTags.indexOf(childNode.nodeName.toLowerCase()) === -1;
-
-            if (shouldRender) {
-                renderElem(childNode, optionsCopy);
-            }
-        }
-        // Otherwise, it's something else, and ignore it.
-    }
-};
-
-var defaultAutoRenderOptions = {
-    delimiters: [{ left: "$$", right: "$$", display: true }, { left: "\\[", right: "\\]", display: true }, { left: "\\(", right: "\\)", display: false }],
-
-    ignoredTags: ["script", "noscript", "style", "textarea", "pre", "code"],
-
-    errorCallback: function errorCallback(msg, err) {
-        console.error(msg, err);
-    }
-};
-
-var renderMathInElement = function renderMathInElement(elem, options) {
-    if (!elem) {
-        throw new Error("No element provided to render");
-    }
-
-    var optionsCopy = __WEBPACK_IMPORTED_MODULE_0_babel_runtime_core_js_object_assign___default()({}, defaultAutoRenderOptions, options);
-    renderElem(elem, optionsCopy);
-};
-
-/* harmony default export */ __webpack_exports__["default"] = (renderMathInElement);
-
-/***/ }),
-/* 10 */
-/***/ (function(module, exports, __webpack_require__) {
-
-module.exports = { "default": __webpack_require__(11), __esModule: true };
-
-/***/ }),
-/* 11 */
-/***/ (function(module, exports, __webpack_require__) {
-
-__webpack_require__(12);
-module.exports = __webpack_require__(4).Object.assign;
-
-/***/ }),
-/* 12 */
-/***/ (function(module, exports, __webpack_require__) {
-
-// 19.1.3.1 Object.assign(target, source)
-var $export = __webpack_require__(13);
-
-$export($export.S + $export.F, 'Object', {assign: __webpack_require__(23)});
-
-/***/ }),
-/* 13 */
-/***/ (function(module, exports, __webpack_require__) {
-
-var global    = __webpack_require__(0)
-  , core      = __webpack_require__(4)
-  , ctx       = __webpack_require__(14)
-  , hide      = __webpack_require__(16)
-  , PROTOTYPE = 'prototype';
-
-var $export = function(type, name, source){
-  var IS_FORCED = type & $export.F
-    , IS_GLOBAL = type & $export.G
-    , IS_STATIC = type & $export.S
-    , IS_PROTO  = type & $export.P
-    , IS_BIND   = type & $export.B
-    , IS_WRAP   = type & $export.W
-    , exports   = IS_GLOBAL ? core : core[name] || (core[name] = {})
-    , expProto  = exports[PROTOTYPE]
-    , target    = IS_GLOBAL ? global : IS_STATIC ? global[name] : (global[name] || {})[PROTOTYPE]
-    , key, own, out;
-  if(IS_GLOBAL)source = name;
-  for(key in source){
-    // contains in native
-    own = !IS_FORCED && target && target[key] !== undefined;
-    if(own && key in exports)continue;
-    // export native or passed
-    out = own ? target[key] : source[key];
-    // prevent global pollution for namespaces
-    exports[key] = IS_GLOBAL && typeof target[key] != 'function' ? source[key]
-    // bind timers to global for call from export context
-    : IS_BIND && own ? ctx(out, global)
-    // wrap global constructors for prevent change them in library
-    : IS_WRAP && target[key] == out ? (function(C){
-      var F = function(a, b, c){
-        if(this instanceof C){
-          switch(arguments.length){
-            case 0: return new C;
-            case 1: return new C(a);
-            case 2: return new C(a, b);
-          } return new C(a, b, c);
-        } return C.apply(this, arguments);
-      };
-      F[PROTOTYPE] = C[PROTOTYPE];
-      return F;
-    // make static versions for prototype methods
-    })(out) : IS_PROTO && typeof out == 'function' ? ctx(Function.call, out) : out;
-    // export proto methods to core.%CONSTRUCTOR%.methods.%NAME%
-    if(IS_PROTO){
-      (exports.virtual || (exports.virtual = {}))[key] = out;
-      // export proto methods to core.%CONSTRUCTOR%.prototype.%NAME%
-      if(type & $export.R && expProto && !expProto[key])hide(expProto, key, out);
-    }
-  }
-};
-// type bitmap
-$export.F = 1;   // forced
-$export.G = 2;   // global
-$export.S = 4;   // static
-$export.P = 8;   // proto
-$export.B = 16;  // bind
-$export.W = 32;  // wrap
-$export.U = 64;  // safe
-$export.R = 128; // real proto method for `library` 
-module.exports = $export;
-
-/***/ }),
-/* 14 */
-/***/ (function(module, exports, __webpack_require__) {
-
-// optional / simple context binding
-var aFunction = __webpack_require__(15);
-module.exports = function(fn, that, length){
-  aFunction(fn);
-  if(that === undefined)return fn;
-  switch(length){
-    case 1: return function(a){
-      return fn.call(that, a);
-    };
-    case 2: return function(a, b){
-      return fn.call(that, a, b);
-    };
-    case 3: return function(a, b, c){
-      return fn.call(that, a, b, c);
-    };
-  }
-  return function(/* ...args */){
-    return fn.apply(that, arguments);
-  };
-};
-
-/***/ }),
-/* 15 */
-/***/ (function(module, exports) {
-
-module.exports = function(it){
-  if(typeof it != 'function')throw TypeError(it + ' is not a function!');
-  return it;
-};
-
-/***/ }),
-/* 16 */
-/***/ (function(module, exports, __webpack_require__) {
-
-var dP         = __webpack_require__(17)
-  , createDesc = __webpack_require__(22);
-module.exports = __webpack_require__(2) ? function(object, key, value){
-  return dP.f(object, key, createDesc(1, value));
-} : function(object, key, value){
-  object[key] = value;
-  return object;
-};
-
-/***/ }),
-/* 17 */
-/***/ (function(module, exports, __webpack_require__) {
-
-var anObject       = __webpack_require__(18)
-  , IE8_DOM_DEFINE = __webpack_require__(19)
-  , toPrimitive    = __webpack_require__(21)
-  , dP             = Object.defineProperty;
-
-exports.f = __webpack_require__(2) ? Object.defineProperty : function defineProperty(O, P, Attributes){
-  anObject(O);
-  P = toPrimitive(P, true);
-  anObject(Attributes);
-  if(IE8_DOM_DEFINE)try {
-    return dP(O, P, Attributes);
-  } catch(e){ /* empty */ }
-  if('get' in Attributes || 'set' in Attributes)throw TypeError('Accessors not supported!');
-  if('value' in Attributes)O[P] = Attributes.value;
-  return O;
-};
-
-/***/ }),
-/* 18 */
-/***/ (function(module, exports, __webpack_require__) {
-
-var isObject = __webpack_require__(1);
-module.exports = function(it){
-  if(!isObject(it))throw TypeError(it + ' is not an object!');
-  return it;
-};
-
-/***/ }),
-/* 19 */
-/***/ (function(module, exports, __webpack_require__) {
-
-module.exports = !__webpack_require__(2) && !__webpack_require__(3)(function(){
-  return Object.defineProperty(__webpack_require__(20)('div'), 'a', {get: function(){ return 7; }}).a != 7;
-});
-
-/***/ }),
-/* 20 */
-/***/ (function(module, exports, __webpack_require__) {
-
-var isObject = __webpack_require__(1)
-  , document = __webpack_require__(0).document
-  // in old IE typeof document.createElement is 'object'
-  , is = isObject(document) && isObject(document.createElement);
-module.exports = function(it){
-  return is ? document.createElement(it) : {};
-};
-
-/***/ }),
-/* 21 */
-/***/ (function(module, exports, __webpack_require__) {
-
-// 7.1.1 ToPrimitive(input [, PreferredType])
-var isObject = __webpack_require__(1);
-// instead of the ES6 spec version, we didn't implement @@toPrimitive case
-// and the second argument - flag - preferred type is a string
-module.exports = function(it, S){
-  if(!isObject(it))return it;
-  var fn, val;
-  if(S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it)))return val;
-  if(typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it)))return val;
-  if(!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it)))return val;
-  throw TypeError("Can't convert object to primitive value");
-};
-
-/***/ }),
-/* 22 */
-/***/ (function(module, exports) {
-
-module.exports = function(bitmap, value){
-  return {
-    enumerable  : !(bitmap & 1),
-    configurable: !(bitmap & 2),
-    writable    : !(bitmap & 4),
-    value       : value
-  };
-};
-
-/***/ }),
-/* 23 */
-/***/ (function(module, exports, __webpack_require__) {
-
-"use strict";
-
-// 19.1.2.1 Object.assign(target, source, ...)
-var getKeys  = __webpack_require__(24)
-  , gOPS     = __webpack_require__(35)
-  , pIE      = __webpack_require__(36)
-  , toObject = __webpack_require__(37)
-  , IObject  = __webpack_require__(6)
-  , $assign  = Object.assign;
-
-// should work with symbols and should have deterministic property order (V8 bug)
-module.exports = !$assign || __webpack_require__(3)(function(){
-  var A = {}
-    , B = {}
-    , S = Symbol()
-    , K = 'abcdefghijklmnopqrst';
-  A[S] = 7;
-  K.split('').forEach(function(k){ B[k] = k; });
-  return $assign({}, A)[S] != 7 || Object.keys($assign({}, B)).join('') != K;
-}) ? function assign(target, source){ // eslint-disable-line no-unused-vars
-  var T     = toObject(target)
-    , aLen  = arguments.length
-    , index = 1
-    , getSymbols = gOPS.f
-    , isEnum     = pIE.f;
-  while(aLen > index){
-    var S      = IObject(arguments[index++])
-      , keys   = getSymbols ? getKeys(S).concat(getSymbols(S)) : getKeys(S)
-      , length = keys.length
-      , j      = 0
-      , key;
-    while(length > j)if(isEnum.call(S, key = keys[j++]))T[key] = S[key];
-  } return T;
-} : $assign;
-
-/***/ }),
-/* 24 */
-/***/ (function(module, exports, __webpack_require__) {
-
-// 19.1.2.14 / 15.2.3.14 Object.keys(O)
-var $keys       = __webpack_require__(25)
-  , enumBugKeys = __webpack_require__(34);
-
-module.exports = Object.keys || function keys(O){
-  return $keys(O, enumBugKeys);
-};
-
-/***/ }),
-/* 25 */
-/***/ (function(module, exports, __webpack_require__) {
-
-var has          = __webpack_require__(26)
-  , toIObject    = __webpack_require__(5)
-  , arrayIndexOf = __webpack_require__(28)(false)
-  , IE_PROTO     = __webpack_require__(31)('IE_PROTO');
-
-module.exports = function(object, names){
-  var O      = toIObject(object)
-    , i      = 0
-    , result = []
-    , key;
-  for(key in O)if(key != IE_PROTO)has(O, key) && result.push(key);
-  // Don't enum bug & hidden keys
-  while(names.length > i)if(has(O, key = names[i++])){
-    ~arrayIndexOf(result, key) || result.push(key);
-  }
-  return result;
-};
-
-/***/ }),
-/* 26 */
-/***/ (function(module, exports) {
-
-var hasOwnProperty = {}.hasOwnProperty;
-module.exports = function(it, key){
-  return hasOwnProperty.call(it, key);
-};
-
-/***/ }),
-/* 27 */
-/***/ (function(module, exports) {
-
-var toString = {}.toString;
-
-module.exports = function(it){
-  return toString.call(it).slice(8, -1);
-};
-
-/***/ }),
-/* 28 */
-/***/ (function(module, exports, __webpack_require__) {
-
-// false -> Array#indexOf
-// true  -> Array#includes
-var toIObject = __webpack_require__(5)
-  , toLength  = __webpack_require__(29)
-  , toIndex   = __webpack_require__(30);
-module.exports = function(IS_INCLUDES){
-  return function($this, el, fromIndex){
-    var O      = toIObject($this)
-      , length = toLength(O.length)
-      , index  = toIndex(fromIndex, length)
-      , value;
-    // Array#includes uses SameValueZero equality algorithm
-    if(IS_INCLUDES && el != el)while(length > index){
-      value = O[index++];
-      if(value != value)return true;
-    // Array#toIndex ignores holes, Array#includes - not
-    } else for(;length > index; index++)if(IS_INCLUDES || index in O){
-      if(O[index] === el)return IS_INCLUDES || index || 0;
-    } return !IS_INCLUDES && -1;
-  };
-};
-
-/***/ }),
-/* 29 */
-/***/ (function(module, exports, __webpack_require__) {
-
-// 7.1.15 ToLength
-var toInteger = __webpack_require__(8)
-  , min       = Math.min;
-module.exports = function(it){
-  return it > 0 ? min(toInteger(it), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991
-};
-
-/***/ }),
-/* 30 */
-/***/ (function(module, exports, __webpack_require__) {
-
-var toInteger = __webpack_require__(8)
-  , max       = Math.max
-  , min       = Math.min;
-module.exports = function(index, length){
-  index = toInteger(index);
-  return index < 0 ? max(index + length, 0) : min(index, length);
-};
-
-/***/ }),
-/* 31 */
-/***/ (function(module, exports, __webpack_require__) {
-
-var shared = __webpack_require__(32)('keys')
-  , uid    = __webpack_require__(33);
-module.exports = function(key){
-  return shared[key] || (shared[key] = uid(key));
-};
-
-/***/ }),
-/* 32 */
-/***/ (function(module, exports, __webpack_require__) {
-
-var global = __webpack_require__(0)
-  , SHARED = '__core-js_shared__'
-  , store  = global[SHARED] || (global[SHARED] = {});
-module.exports = function(key){
-  return store[key] || (store[key] = {});
-};
-
-/***/ }),
-/* 33 */
-/***/ (function(module, exports) {
-
-var id = 0
-  , px = Math.random();
-module.exports = function(key){
-  return 'Symbol('.concat(key === undefined ? '' : key, ')_', (++id + px).toString(36));
-};
-
-/***/ }),
-/* 34 */
-/***/ (function(module, exports) {
-
-// IE 8- don't enum bug keys
-module.exports = (
-  'constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,toLocaleString,toString,valueOf'
-).split(',');
-
-/***/ }),
-/* 35 */
-/***/ (function(module, exports) {
-
-exports.f = Object.getOwnPropertySymbols;
-
-/***/ }),
-/* 36 */
-/***/ (function(module, exports) {
-
-exports.f = {}.propertyIsEnumerable;
-
-/***/ }),
-/* 37 */
-/***/ (function(module, exports, __webpack_require__) {
-
-// 7.1.13 ToObject(argument)
-var defined = __webpack_require__(7);
-module.exports = function(it){
-  return Object(defined(it));
-};
-
-/***/ }),
-/* 38 */
-/***/ (function(module, exports) {
-
-module.exports = __WEBPACK_EXTERNAL_MODULE_38__;
-
-/***/ }),
-/* 39 */
-/***/ (function(module, __webpack_exports__, __webpack_require__) {
-
-"use strict";
-/* eslint no-constant-condition:0 */
-var findEndOfMath = function findEndOfMath(delimiter, text, startIndex) {
-    // Adapted from
-    // https://github.com/Khan/perseus/blob/master/src/perseus-markdown.jsx
-    var index = startIndex;
-    var braceLevel = 0;
-
-    var delimLength = delimiter.length;
-
-    while (index < text.length) {
-        var character = text[index];
-
-        if (braceLevel <= 0 && text.slice(index, index + delimLength) === delimiter) {
-            return index;
-        } else if (character === "\\") {
-            index++;
-        } else if (character === "{") {
-            braceLevel++;
-        } else if (character === "}") {
-            braceLevel--;
-        }
-
-        index++;
-    }
-
-    return -1;
-};
-
-var splitAtDelimiters = function splitAtDelimiters(startData, leftDelim, rightDelim, display) {
-    var finalData = [];
-
-    for (var i = 0; i < startData.length; i++) {
-        if (startData[i].type === "text") {
-            var text = startData[i].data;
-
-            var lookingForLeft = true;
-            var currIndex = 0;
-            var nextIndex = void 0;
-
-            nextIndex = text.indexOf(leftDelim);
-            if (nextIndex !== -1) {
-                currIndex = nextIndex;
-                finalData.push({
-                    type: "text",
-                    data: text.slice(0, currIndex)
-                });
-                lookingForLeft = false;
-            }
-
-            while (true) {
-                if (lookingForLeft) {
-                    nextIndex = text.indexOf(leftDelim, currIndex);
-                    if (nextIndex === -1) {
-                        break;
-                    }
-
-                    finalData.push({
-                        type: "text",
-                        data: text.slice(currIndex, nextIndex)
-                    });
-
-                    currIndex = nextIndex;
-                } else {
-                    nextIndex = findEndOfMath(rightDelim, text, currIndex + leftDelim.length);
-                    if (nextIndex === -1) {
-                        break;
-                    }
-
-                    finalData.push({
-                        type: "math",
-                        data: text.slice(currIndex + leftDelim.length, nextIndex),
-                        rawData: text.slice(currIndex, nextIndex + rightDelim.length),
-                        display: display
-                    });
-
-                    currIndex = nextIndex + rightDelim.length;
-                }
-
-                lookingForLeft = !lookingForLeft;
-            }
-
-            finalData.push({
-                type: "text",
-                data: text.slice(currIndex)
-            });
-        } else {
-            finalData.push(startData[i]);
-        }
-    }
-
-    return finalData;
-};
-
-/* harmony default export */ __webpack_exports__["a"] = (splitAtDelimiters);
-
-/***/ })
-/******/ ])["default"];
-});

client/katex/contrib/copy-tex.css

@@ -1,12 +0,0 @@
-/* Force selection of entire .katex/.katex-display blocks, so that we can
- * copy/paste the entire source code.  If you omit this CSS, partial
- * selections of a formula will work, but will copy the ugly HTML
- * representation instead of the LaTeX source code.  (Full selections will
- * still produce the LaTeX source code.)
- */
-.katex, .katex-display {
-    user-select: all;
-    -moz-user-select: all;
-    -webkit-user-select: all;
-    -ms-user-select: all;
-}

client/katex/contrib/copy-tex.js

@@ -1,174 +0,0 @@
-(function webpackUniversalModuleDefinition(root, factory) {
-	if(typeof exports === 'object' && typeof module === 'object')
-		module.exports = factory();
-	else if(typeof define === 'function' && define.amd)
-		define([], factory);
-	else {
-		var a = factory();
-		for(var i in a) (typeof exports === 'object' ? exports : root)[i] = a[i];
-	}
-})(this, function() {
-return /******/ (function(modules) { // webpackBootstrap
-/******/ 	// The module cache
-/******/ 	var installedModules = {};
-/******/
-/******/ 	// The require function
-/******/ 	function __webpack_require__(moduleId) {
-/******/
-/******/ 		// Check if module is in cache
-/******/ 		if(installedModules[moduleId]) {
-/******/ 			return installedModules[moduleId].exports;
-/******/ 		}
-/******/ 		// Create a new module (and put it into the cache)
-/******/ 		var module = installedModules[moduleId] = {
-/******/ 			i: moduleId,
-/******/ 			l: false,
-/******/ 			exports: {}
-/******/ 		};
-/******/
-/******/ 		// Execute the module function
-/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
-/******/
-/******/ 		// Flag the module as loaded
-/******/ 		module.l = true;
-/******/
-/******/ 		// Return the exports of the module
-/******/ 		return module.exports;
-/******/ 	}
-/******/
-/******/
-/******/ 	// expose the modules object (__webpack_modules__)
-/******/ 	__webpack_require__.m = modules;
-/******/
-/******/ 	// expose the module cache
-/******/ 	__webpack_require__.c = installedModules;
-/******/
-/******/ 	// define getter function for harmony exports
-/******/ 	__webpack_require__.d = function(exports, name, getter) {
-/******/ 		if(!__webpack_require__.o(exports, name)) {
-/******/ 			Object.defineProperty(exports, name, {
-/******/ 				configurable: false,
-/******/ 				enumerable: true,
-/******/ 				get: getter
-/******/ 			});
-/******/ 		}
-/******/ 	};
-/******/
-/******/ 	// getDefaultExport function for compatibility with non-harmony modules
-/******/ 	__webpack_require__.n = function(module) {
-/******/ 		var getter = module && module.__esModule ?
-/******/ 			function getDefault() { return module['default']; } :
-/******/ 			function getModuleExports() { return module; };
-/******/ 		__webpack_require__.d(getter, 'a', getter);
-/******/ 		return getter;
-/******/ 	};
-/******/
-/******/ 	// Object.prototype.hasOwnProperty.call
-/******/ 	__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
-/******/
-/******/ 	// __webpack_public_path__
-/******/ 	__webpack_require__.p = "";
-/******/
-/******/ 	// Load entry module and return exports
-/******/ 	return __webpack_require__(__webpack_require__.s = 0);
-/******/ })
-/************************************************************************/
-/******/ ([
-/* 0 */
-/***/ (function(module, __webpack_exports__, __webpack_require__) {
-
-"use strict";
-Object.defineProperty(__webpack_exports__, "__esModule", { value: true });
-/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__copy_tex_css__ = __webpack_require__(1);
-/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__copy_tex_css___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0__copy_tex_css__);
-/* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__katex2tex__ = __webpack_require__(2);
-
-
-
-// Global copy handler to modify behavior on .katex elements.
-document.addEventListener('copy', function (event) {
-    var selection = window.getSelection();
-    if (selection.isCollapsed) {
-        return; // default action OK if selection is empty
-    }
-    var fragment = selection.getRangeAt(0).cloneContents();
-    if (!fragment.querySelector('.katex-mathml')) {
-        return; // default action OK if no .katex-mathml elements
-    }
-    // Preserve usual HTML copy/paste behavior.
-    var html = [];
-    for (var i = 0; i < fragment.childNodes.length; i++) {
-        html.push(fragment.childNodes[i].outerHTML);
-    }
-    event.clipboardData.setData('text/html', html.join(''));
-    // Rewrite plain-text version.
-    event.clipboardData.setData('text/plain', Object(__WEBPACK_IMPORTED_MODULE_1__katex2tex__["a" /* default */])(fragment).textContent);
-    // Prevent normal copy handling.
-    event.preventDefault();
-});
-
-/***/ }),
-/* 1 */
-/***/ (function(module, exports) {
-
-// removed by extract-text-webpack-plugin
-
-/***/ }),
-/* 2 */
-/***/ (function(module, __webpack_exports__, __webpack_require__) {
-
-"use strict";
-/* unused harmony export defaultCopyDelimiters */
-/* unused harmony export katexReplaceWithTex */
-// Set these to how you want inline and display math to be delimited.
-var defaultCopyDelimiters = {
-    inline: ['$', '$'], // alternative: ['\(', '\)']
-    display: ['$$', '$$'] // alternative: ['\[', '\]']
-};
-
-// Replace .katex elements with their TeX source (<annotation> element).
-// Modifies fragment in-place.  Useful for writing your own 'copy' handler,
-// as in copy-tex.js.
-var katexReplaceWithTex = function katexReplaceWithTex(fragment) {
-    var copyDelimiters = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : defaultCopyDelimiters;
-
-    // Remove .katex-html blocks that are preceded by .katex-mathml blocks
-    // (which will get replaced below).
-    var katexHtml = fragment.querySelectorAll('.katex-mathml + .katex-html');
-    for (var i = 0; i < katexHtml.length; i++) {
-        var element = katexHtml[i];
-        if (element.remove) {
-            element.remove(null);
-        } else {
-            element.parentNode.removeChild(element);
-        }
-    }
-    // Replace .katex-mathml elements with their annotation (TeX source)
-    // descendant, with inline delimiters.
-    var katexMathml = fragment.querySelectorAll('.katex-mathml');
-    for (var _i = 0; _i < katexMathml.length; _i++) {
-        var _element = katexMathml[_i];
-        var texSource = _element.querySelector('annotation');
-        if (texSource) {
-            if (_element.replaceWith) {
-                _element.replaceWith(texSource);
-            } else {
-                _element.parentNode.replaceChild(texSource, _element);
-            }
-            texSource.innerHTML = copyDelimiters.inline[0] + texSource.innerHTML + copyDelimiters.inline[1];
-        }
-    }
-    // Switch display math to display delimiters.
-    var displays = fragment.querySelectorAll('.katex-display annotation');
-    for (var _i2 = 0; _i2 < displays.length; _i2++) {
-        var _element2 = displays[_i2];
-        _element2.innerHTML = copyDelimiters.display[0] + _element2.innerHTML.substr(copyDelimiters.inline[0].length, _element2.innerHTML.length - copyDelimiters.inline[0].length - copyDelimiters.inline[1].length) + copyDelimiters.display[1];
-    }
-    return fragment;
-};
-
-/* harmony default export */ __webpack_exports__["a"] = (katexReplaceWithTex);
-
-/***/ })
-/******/ ])["default"];
-});

client/katex/contrib/copy-tex.min.css

@@ -1 +0,0 @@
-.katex,.katex-display{user-select:all;-moz-user-select:all;-webkit-user-select:all;-ms-user-select:all}

client/katex/contrib/copy-tex.min.js

@@ -1 +0,0 @@
-!function(e,t){if("object"==typeof exports&&"object"==typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{var n=t();for(var r in n)("object"==typeof exports?exports:e)[r]=n[r]}}(this,function(){return function(e){var t={};function n(r){if(t[r])return t[r].exports;var o=t[r]={i:r,l:!1,exports:{}};return e[r].call(o.exports,o,o.exports,n),o.l=!0,o.exports}return n.m=e,n.c=t,n.d=function(e,t,r){n.o(e,t)||Object.defineProperty(e,t,{configurable:!1,enumerable:!0,get:r})},n.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return n.d(t,"a",t),t},n.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},n.p="",n(n.s=0)}([function(e,t,n){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var r=n(1),o=(n.n(r),n(2));document.addEventListener("copy",function(e){var t=window.getSelection();if(!t.isCollapsed){var n=t.getRangeAt(0).cloneContents();if(n.querySelector(".katex-mathml")){for(var r=[],i=0;i<n.childNodes.length;i++)r.push(n.childNodes[i].outerHTML);e.clipboardData.setData("text/html",r.join("")),e.clipboardData.setData("text/plain",Object(o.a)(n).textContent),e.preventDefault()}}})},function(e,t){},function(e,t,n){"use strict";var r={inline:["$","$"],display:["$$","$$"]};t.a=function(e){for(var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:r,n=e.querySelectorAll(".katex-mathml + .katex-html"),o=0;o<n.length;o++){var i=n[o];i.remove?i.remove(null):i.parentNode.removeChild(i)}for(var l=e.querySelectorAll(".katex-mathml"),a=0;a<l.length;a++){var u=l[a],c=u.querySelector("annotation");c&&(u.replaceWith?u.replaceWith(c):u.parentNode.replaceChild(c,u),c.innerHTML=t.inline[0]+c.innerHTML+t.inline[1])}for(var f=e.querySelectorAll(".katex-display annotation"),p=0;p<f.length;p++){var s=f[p];s.innerHTML=t.display[0]+s.innerHTML.substr(t.inline[0].length,s.innerHTML.length-t.inline[0].length-t.inline[1].length)+t.display[1]}return e}}]).default});

client/katex/contrib/mathtex-script-type.js

@@ -1,113 +0,0 @@
-(function webpackUniversalModuleDefinition(root, factory) {
-	if(typeof exports === 'object' && typeof module === 'object')
-		module.exports = factory(require("katex"));
-	else if(typeof define === 'function' && define.amd)
-		define(["katex"], factory);
-	else {
-		var a = typeof exports === 'object' ? factory(require("katex")) : factory(root["katex"]);
-		for(var i in a) (typeof exports === 'object' ? exports : root)[i] = a[i];
-	}
-})(this, function(__WEBPACK_EXTERNAL_MODULE_1__) {
-return /******/ (function(modules) { // webpackBootstrap
-/******/ 	// The module cache
-/******/ 	var installedModules = {};
-/******/
-/******/ 	// The require function
-/******/ 	function __webpack_require__(moduleId) {
-/******/
-/******/ 		// Check if module is in cache
-/******/ 		if(installedModules[moduleId]) {
-/******/ 			return installedModules[moduleId].exports;
-/******/ 		}
-/******/ 		// Create a new module (and put it into the cache)
-/******/ 		var module = installedModules[moduleId] = {
-/******/ 			i: moduleId,
-/******/ 			l: false,
-/******/ 			exports: {}
-/******/ 		};
-/******/
-/******/ 		// Execute the module function
-/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
-/******/
-/******/ 		// Flag the module as loaded
-/******/ 		module.l = true;
-/******/
-/******/ 		// Return the exports of the module
-/******/ 		return module.exports;
-/******/ 	}
-/******/
-/******/
-/******/ 	// expose the modules object (__webpack_modules__)
-/******/ 	__webpack_require__.m = modules;
-/******/
-/******/ 	// expose the module cache
-/******/ 	__webpack_require__.c = installedModules;
-/******/
-/******/ 	// define getter function for harmony exports
-/******/ 	__webpack_require__.d = function(exports, name, getter) {
-/******/ 		if(!__webpack_require__.o(exports, name)) {
-/******/ 			Object.defineProperty(exports, name, {
-/******/ 				configurable: false,
-/******/ 				enumerable: true,
-/******/ 				get: getter
-/******/ 			});
-/******/ 		}
-/******/ 	};
-/******/
-/******/ 	// getDefaultExport function for compatibility with non-harmony modules
-/******/ 	__webpack_require__.n = function(module) {
-/******/ 		var getter = module && module.__esModule ?
-/******/ 			function getDefault() { return module['default']; } :
-/******/ 			function getModuleExports() { return module; };
-/******/ 		__webpack_require__.d(getter, 'a', getter);
-/******/ 		return getter;
-/******/ 	};
-/******/
-/******/ 	// Object.prototype.hasOwnProperty.call
-/******/ 	__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
-/******/
-/******/ 	// __webpack_public_path__
-/******/ 	__webpack_require__.p = "";
-/******/
-/******/ 	// Load entry module and return exports
-/******/ 	return __webpack_require__(__webpack_require__.s = 0);
-/******/ })
-/************************************************************************/
-/******/ ([
-/* 0 */
-/***/ (function(module, __webpack_exports__, __webpack_require__) {
-
-"use strict";
-Object.defineProperty(__webpack_exports__, "__esModule", { value: true });
-/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_katex__ = __webpack_require__(1);
-/* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_katex___default = __webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_katex__);
-
-
-var scripts = document.body.getElementsByTagName("script");
-scripts = Array.prototype.slice.call(scripts);
-scripts.forEach(function (script) {
-    if (!script.type || !script.type.match(/math\/tex/i)) {
-        return -1;
-    }
-    var display = script.type.match(/mode\s*=\s*display(;|\s|\n|$)/) != null;
-
-    var katexElement = document.createElement(display ? "div" : "span");
-    katexElement.setAttribute("class", display ? "equation" : "inline-equation");
-    try {
-        __WEBPACK_IMPORTED_MODULE_0_katex___default.a.render(script.text, katexElement, { displayMode: display });
-    } catch (err) {
-        //console.error(err); linter doesn't like this
-        katexElement.textContent = script.text;
-    }
-    script.parentNode.replaceChild(katexElement, script);
-});
-
-/***/ }),
-/* 1 */
-/***/ (function(module, exports) {
-
-module.exports = __WEBPACK_EXTERNAL_MODULE_1__;
-
-/***/ })
-/******/ ])["default"];
-});

client/katex/contrib/mathtex-script-type.min.js

@@ -1 +0,0 @@
-!function(e,t){if("object"==typeof exports&&"object"==typeof module)module.exports=t(require("katex"));else if("function"==typeof define&&define.amd)define(["katex"],t);else{var r="object"==typeof exports?t(require("katex")):t(e.katex);for(var n in r)("object"==typeof exports?exports:e)[n]=r[n]}}(this,function(e){return function(e){var t={};function r(n){if(t[n])return t[n].exports;var o=t[n]={i:n,l:!1,exports:{}};return e[n].call(o.exports,o,o.exports,r),o.l=!0,o.exports}return r.m=e,r.c=t,r.d=function(e,t,n){r.o(e,t)||Object.defineProperty(e,t,{configurable:!1,enumerable:!0,get:n})},r.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return r.d(t,"a",t),t},r.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},r.p="",r(r.s=0)}([function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var n=r(1),o=r.n(n),i=document.body.getElementsByTagName("script");(i=Array.prototype.slice.call(i)).forEach(function(e){if(!e.type||!e.type.match(/math\/tex/i))return-1;var t=null!=e.type.match(/mode\s*=\s*display(;|\s|\n|$)/),r=document.createElement(t?"div":"span");r.setAttribute("class",t?"equation":"inline-equation");try{o.a.render(e.text,r,{displayMode:t})}catch(t){r.textContent=e.text}e.parentNode.replaceChild(r,e)})},function(t,r){t.exports=e}]).default});

client/manifest.json

@@ -2,36 +2,36 @@
   "short_name": "HC",
   "name": "Hack-Chat",
   "icons": [
-      {
-          "src": "imgs/android-icon-36x36.png",
-          "sizes": "36x36",
-          "type": "image/png"
-      },
-      {
-          "src": "imgs/android-icon-48x48.png",
-          "sizes": "48x48",
-          "type": "image/png"
-      },
-      {
-          "src": "imgs/android-icon-72x72.png",
-          "sizes": "72x72",
-          "type": "image/png"
-      },
-      {
-          "src": "imgs/android-icon-96x96.png",
-          "sizes": "96x96",
-          "type": "image/png"
-      },
-      {
-          "src": "imgs/android-icon-144x144.png",
-          "sizes": "144x144",
-          "type": "image/png"
-      },
-      {
-          "src": "imgs/android-icon-192x192.png",
-          "sizes": "192x192",
-          "type": "image/png"
-      }
+    {
+      "src": "imgs/android-icon-36x36.png",
+      "sizes": "36x36",
+      "type": "image/png"
+    },
+    {
+      "src": "imgs/android-icon-48x48.png",
+      "sizes": "48x48",
+      "type": "image/png"
+    },
+    {
+      "src": "imgs/android-icon-72x72.png",
+      "sizes": "72x72",
+      "type": "image/png"
+    },
+    {
+      "src": "imgs/android-icon-96x96.png",
+      "sizes": "96x96",
+      "type": "image/png"
+    },
+    {
+      "src": "imgs/android-icon-144x144.png",
+      "sizes": "144x144",
+      "type": "image/png"
+    },
+    {
+      "src": "imgs/android-icon-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png"
+    }
   ],
   "start_url": "./",
   "display": "minimal-ui",

client/schemes/index.html

@@ -0,0 +1 @@
+

client/style.css

@@ -2,6 +2,7 @@ body {
   padding: 0;
   margin: 0;
   overflow-y: scroll;
+  font-family: monospace;
 }
 body,
 input,
@@ -43,8 +44,22 @@ a {
 a:hover {
   text-decoration: underline;
 }
-ul {
-  padding-left: 0;
+#sidebar-content ul {
+  padding-inline-start: 20px;
+}
+#sidebar-content ul li {
+  list-style: disc outside none;
+}
+ul, ol {
+    margin-top: 0;
+    margin-bottom: 10px;
+    display: block;
+    list-style-type: disc;
+    margin-block-start: 1em;
+    margin-block-end: 1em;
+    margin-inline-start: 0px;
+    margin-inline-end: 0px;
+    padding-inline-start: 40px;
 }
 ul li {
   list-style: inside;
@@ -65,9 +80,6 @@ ul li {
 .message, .refmessage {
   padding-bottom: 1em;
 }
-.refmessage {
-  font-weight: bold;
-}
 .nick {
   float: left;
   width: 16em;
@@ -113,6 +125,89 @@ ul li {
   width: 180px;
   padding-bottom: 10%;
 }
+h1,h2,h3,h4,h5,h6 {
+  margin: 3px;
+  margin-top: 0px;
+}
+blockquote {
+  padding: 3px 10px;
+  margin: 3px;
+  border-left: 5px solid #4e4e4e;
+}
+code {
+  padding: 2px 4px;
+  font-size: 90%;
+  color: #000000;
+  background-color: #4e4e4e;
+  border-radius: 4px;
+}
+hr {
+  margin-top: 20px;
+  margin-bottom: 20px;
+  border: 0;
+  border-top: 1px solid #4e4e4e;
+}
+mark {
+  background-color: #60ac39;
+  color: black;
+}
+pre {
+  display: block;
+  padding: 9.5px;
+  margin: 0 0 10px;
+  font-size: 13px;
+  line-height: 1.42857143;
+  color: #797979;
+  word-break: break-all;
+  word-wrap: break-word;
+  background-color: #4e4e4e;
+  border: 1px solid #000;
+  border-radius: 4px;
+}
+table {
+  background-color: transparent;
+  width: 100%;
+  max-width: 100%;
+  margin-bottom: 20px;
+  border-spacing: 0;
+  border-collapse: collapse;
+}
+table > caption + thead > tr:first-child > th, table > colgroup + thead > tr:first-child > th, table > thead:first-child > tr:first-child > th, table > caption + thead > tr:first-child > td, table > colgroup + thead > tr:first-child > td, table > thead:first-child > tr:first-child > td {
+    border-top: 0;
+}
+table > thead > tr > th {
+    vertical-align: bottom;
+    border-bottom: 2px solid #4e4e4e;
+}
+table > thead > tr > th, table > tbody > tr > th, table > tfoot > tr > th, table > thead > tr > td, table > tbody > tr > td, table > tfoot > tr > td {
+    padding: 8px;
+    line-height: 1.42857143;
+    vertical-align: top;
+    border-top: 1px solid #4e4e4e;
+}
+th {
+    text-align: left;
+}
+td, th {
+    padding: 0;
+}
+table > tbody > tr:nth-child(odd) > td, table > tbody > tr:nth-child(odd) > th {
+    background-color: #4e4e4e;
+}
+table > thead > tr > th, table > tbody > tr > th, table > tfoot > tr > th, table > thead > tr > td, table > tbody > tr > td, table > tfoot > tr > td {
+    padding: 8px;
+    line-height: 1.42857143;
+    vertical-align: top;
+    border-top: 1px solid #4e4e4e;
+}
+td, th {
+    padding: 0;
+}
+img {
+  max-width: 50%;
+  max-height: 800px;
+}
+
 @media only screen and (max-width: 600px) {
   .messages {
     border: none;

client/vendor/hljs/index.html

@@ -0,0 +1 @@
+

client/vendor/hljs/styles/agate.min.css

@@ -0,0 +1,17 @@
+/*!
+ * Agate by Taufik Nurrohman <https://github.com/tovic>
+ * ----------------------------------------------------
+ *
+ * #ade5fc
+ * #a2fca2
+ * #c6b4f0
+ * #d36363
+ * #fcc28c
+ * #fc9b9b
+ * #ffa
+ * #fff
+ * #333
+ * #62c8f3
+ * #888
+ *
+ */.hljs{display:block;overflow-x:auto;padding:0.5em;background:#333;color:white}.hljs-name,.hljs-strong{font-weight:bold}.hljs-code,.hljs-emphasis{font-style:italic}.hljs-tag{color:#62c8f3}.hljs-variable,.hljs-template-variable,.hljs-selector-id,.hljs-selector-class{color:#ade5fc}.hljs-string,.hljs-bullet{color:#a2fca2}.hljs-type,.hljs-title,.hljs-section,.hljs-attribute,.hljs-quote,.hljs-built_in,.hljs-builtin-name{color:#ffa}.hljs-number,.hljs-symbol,.hljs-bullet{color:#d36363}.hljs-keyword,.hljs-selector-tag,.hljs-literal{color:#fcc28c}.hljs-comment,.hljs-deletion,.hljs-code{color:#888}.hljs-regexp,.hljs-link{color:#c6b4f0}.hljs-meta{color:#fc9b9b}.hljs-deletion{background-color:#fc9b9b;color:#333}.hljs-addition{background-color:#a2fca2;color:#333}.hljs a{color:inherit}.hljs a:focus,.hljs a:hover{color:inherit;text-decoration:underline}

client/vendor/hljs/styles/androidstudio.min.css

@@ -0,0 +1 @@
+.hljs{color:#a9b7c6;background:#282b2e;display:block;overflow-x:auto;padding:0.5em}.hljs-number,.hljs-literal,.hljs-symbol,.hljs-bullet{color:#6897BB}.hljs-keyword,.hljs-selector-tag,.hljs-deletion{color:#cc7832}.hljs-variable,.hljs-template-variable,.hljs-link{color:#629755}.hljs-comment,.hljs-quote{color:#808080}.hljs-meta{color:#bbb529}.hljs-string,.hljs-attribute,.hljs-addition{color:#6A8759}.hljs-section,.hljs-title,.hljs-type{color:#ffc66d}.hljs-name,.hljs-selector-id,.hljs-selector-class{color:#e8bf6a}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:bold}

client/vendor/hljs/styles/atom-one-dark.min.css

@@ -0,0 +1 @@
+.hljs{display:block;overflow-x:auto;padding:0.5em;color:#abb2bf;background:#282c34}.hljs-comment,.hljs-quote{color:#5c6370;font-style:italic}.hljs-doctag,.hljs-keyword,.hljs-formula{color:#c678dd}.hljs-section,.hljs-name,.hljs-selector-tag,.hljs-deletion,.hljs-subst{color:#e06c75}.hljs-literal{color:#56b6c2}.hljs-string,.hljs-regexp,.hljs-addition,.hljs-attribute,.hljs-meta-string{color:#98c379}.hljs-built_in,.hljs-class .hljs-title{color:#e6c07b}.hljs-attr,.hljs-variable,.hljs-template-variable,.hljs-type,.hljs-selector-class,.hljs-selector-attr,.hljs-selector-pseudo,.hljs-number{color:#d19a66}.hljs-symbol,.hljs-bullet,.hljs-link,.hljs-meta,.hljs-selector-id,.hljs-title{color:#61aeee}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:bold}.hljs-link{text-decoration:underline}

client/vendor/hljs/styles/darcula.min.css

@@ -0,0 +1 @@
+.hljs{display:block;overflow-x:auto;padding:0.5em;background:#2b2b2b}.hljs{color:#bababa}.hljs-strong,.hljs-emphasis{color:#a8a8a2}.hljs-bullet,.hljs-quote,.hljs-link,.hljs-number,.hljs-regexp,.hljs-literal{color:#6896ba}.hljs-code,.hljs-selector-class{color:#a6e22e}.hljs-emphasis{font-style:italic}.hljs-keyword,.hljs-selector-tag,.hljs-section,.hljs-attribute,.hljs-name,.hljs-variable{color:#cb7832}.hljs-params{color:#b9b9b9}.hljs-string{color:#6a8759}.hljs-subst,.hljs-type,.hljs-built_in,.hljs-builtin-name,.hljs-symbol,.hljs-selector-id,.hljs-selector-attr,.hljs-selector-pseudo,.hljs-template-tag,.hljs-template-variable,.hljs-addition{color:#e0c46c}.hljs-comment,.hljs-deletion,.hljs-meta{color:#7f7f7f}

client/vendor/hljs/styles/github.min.css

@@ -0,0 +1 @@
+.hljs{display:block;overflow-x:auto;padding:0.5em;color:#333;background:#f8f8f8}.hljs-comment,.hljs-quote{color:#998;font-style:italic}.hljs-keyword,.hljs-selector-tag,.hljs-subst{color:#333;font-weight:bold}.hljs-number,.hljs-literal,.hljs-variable,.hljs-template-variable,.hljs-tag .hljs-attr{color:#008080}.hljs-string,.hljs-doctag{color:#d14}.hljs-title,.hljs-section,.hljs-selector-id{color:#900;font-weight:bold}.hljs-subst{font-weight:normal}.hljs-type,.hljs-class .hljs-title{color:#458;font-weight:bold}.hljs-tag,.hljs-name,.hljs-attribute{color:#000080;font-weight:normal}.hljs-regexp,.hljs-link{color:#009926}.hljs-symbol,.hljs-bullet{color:#990073}.hljs-built_in,.hljs-builtin-name{color:#0086b3}.hljs-meta{color:#999;font-weight:bold}.hljs-deletion{background:#fdd}.hljs-addition{background:#dfd}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:bold}

client/vendor/hljs/styles/hybrid.min.css

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client/vendor/hljs/styles/index.html

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client/vendor/hljs/styles/rainbow.min.css

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client/vendor/hljs/styles/tomorrow.min.css

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client/vendor/hljs/styles/xcode.min.css

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client/vendor/hljs/styles/zenburn.min.css

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client/vendor/index.html

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