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")},a.table=function(e,t){return''},a}},ze=Ne,$e='# 示例文章：Google 搜索的即时自动补全功能究竟是如何“工作”的？\n> Google 搜索**自动补全功能**的强大，相信不少朋友都能感受到，它帮助我们更快地“补全”我们所要输入的搜索关键字。那么，它怎么知道我们要输入什么内容？它又是如何工作的？在这篇文章里，我们一起来看看。\n\n## 使用自动补全\nGoogle 搜索的自动补全功能可以在 Google 搜索应用的大多数位置使用，包括 [Google](https://www.google.com/) 主页、适用于 IOS 和 Android 的 Google 应用，我们只需要在 Google 搜索框上开始键入关键字，就可以看到联想词了。\n\n\n\n在上图示例中，我们可以看到，输入关键字 `juej`，Google 搜索会联想到“掘金”、“掘金小册”、“绝句”等等，好处就是，我们无须输入完整的关键字即可轻松完成针对这些 topics 的搜索。\n\n谷歌搜索的自动补全功能对于使用移动设备的用户来说特别有用，用户可以轻松在难以键入的小屏幕上完成搜索。当然，对于移动设备用户和台式机用户而言，这都节省了大量的时间。根据 Google 官方报告，自动补全功能可以减少大约 25% 的打字，累积起来，预计每天可以节省 200 多年的打字时间。是的，每天！\n\n> 注意，本文所提到的“**联想词**”与“**预测**”，是同一个意思。\n\n## 基于“预测”而非“建议”\nGoogle 官方将自动补全功能称之为“预测”，而不是“建议”，为什么呢？其实是有充分理由的。自动补全功能是为了**帮助用户完成他们打算进行的搜索**，而不是建议用户要执行什么搜索。\n\n那么，Google 是如何确定这些“预测”的？其实，Google 会根据趋势搜索 [trends](https://trends.google.com/trends/?geo=US) 给到我们这些“预测”。简单来说，哪个热门、哪个搜索频率高，就更可能推给我们。当然，这也与我们当前所处的位置以及我们的搜索历史相关。\n\n另外，这些“预测”也会随着我们键入的关键字的变更而更改。例如，当我们把键入的关键字从 `juej` 更改为 `juex` 时，与“掘金”相关的预测会“消失”，同时，与“觉醒”、“决心”相关联的词会出现。\n\n\n\n## 为什么看不到某些联想词？\n如果我们在输入某个关键字时看不到联想词，那么表明 Google 的算法可能检测到：\n\n- 这个关键字不是热门字词；\n- 搜索的字词太新了，我们可能需要等待几天或几周才能看到联想词；\n- 这是一个侮辱性或敏感字词，这个搜索字词违反了 Google 的相关政策。更加详细的情况，可以了解 [Google 搜索自动补全政策](https://support.google.com/websearch/answer/7368877)。\n\n## 为什么会看到某些不当的联想词？\nGoogle 拥有专门设计的系统，可以自动捕获不适当的预测结果而不显示出来。然而，Google 每天需要处理数十亿次搜索，这意味着 Google 每天会显示数十亿甚至上百亿条预测。再好的系统，也可能存在缺陷，不正确的预测也可能随时会出现。\n\n我们作为 Google 搜索的用户，如果认定某条预测违反了相关的搜索自动补全政策，可以进行举报反馈，点击右下角“**举报不当的联想查询**”并勾选相关选项即可。\n\n\n\n## 如何实现自动补全算法？\n目前，Google 官方似乎并没有公开搜索自动补全的算法实现，但是业界在这方面已经有了不少研究。\n\n一个好的自动补全器必须是快速的，并且在用户键入下一个字符后立即更新联想词列表。**自动补全器的核心是一个函数，它接受输入的前缀，并搜索以给定前缀开头的词汇或语句列表**。通常来说，只需要返回少量的数目即可。\n\n接下来，我们先从一个简单且低效的实现开始，并在此基础上逐步构建更高效的方法。\n\n### 词汇表实现\n一个**简单粗暴的实现方式**是：顺序查找词汇表，依次检查每个词汇，看它是否以给定的前缀开头。\n\n但是，此方法需要将前缀与每个词汇进行匹配检查，若词汇量较少，这种方式可能勉强行得通。但是，如果词汇量规模较大，效率就太低了。\n\n一个**更好的实现方式是**：让词汇按字典顺序排序。借助二分搜索算法，可以快速搜索有序词汇表中的前缀。由于二分搜索的每一步都会将搜索的范围减半，因此，总的搜索时间与词汇表中单词数量的对数成正比，即时间复杂度是 `O(log N)`。二分搜索的性能很好，但有没有更好的实现呢？当然有，往下看。\n\n### 前缀树实现\n通常来说，许多词汇都以相同的前缀开头，比如 `need`、`nested` 都以 `ne` 开头，`seed`、`speed` 都以 `s` 开头。要是为每个单词分别存储公共前缀似乎很浪费。\n\n\n\n前缀树是一种利用公共前缀来加速补全速度的数据结构。前缀树在节点树中排列一组单词，单词沿着从根节点到叶子节点的路径存储，树的层次对应于前缀的字母位置。\n\n前缀的补全是顺着前缀定义的路径来查找的。例如，在上图的前缀树中，前缀 `ne` 对应于从子节点取左边缘 `N` 和唯一边缘 `E` 的路径。然后可以通过继续遍历从 `E` 节点可以达到的所有叶节点来生成补全列表。在图中，`ne` 的补全可以是两个分支：`-ed` 和 `-sted`。如果在数中找不到由前缀定义的路径，则说明词汇表中不包含以该前缀开头的单词。\n\n### 有限状态自动机(DFA)实现\n前缀树可以有效处理公共前缀，但是，对于其他共享词部分，仍会分别存储在每个分支中。比如，后缀 `ed`、`ing`、`tion` 在英文单词中特别常见。在上一个例子中，`e`、`d` 分别存放在了每一个分支上。\n\n有没有一种方法可以更加节省存储空间呢？有的，那就是 DFA。\n\n
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\"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n script,\n render,\n staticRenderFns,\n false,\n null,\n \"71788ed8\",\n null\n \n)\n\nexport default component.exports","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',{staticClass:\"container\",class:{'container_night': _vm.nightMode}},[_c('el-container',[_c('el-header',{staticClass:\"editor__header\"},[_c('editor-header',{on:{\"refresh\":_vm.onEditorRefresh,\"uploaded\":_vm.uploaded,\"cssChanged\":_vm.cssChanged,\"showBox\":function($event){_vm.showBox = !_vm.showBox},\"showAboutDialog\":function($event){_vm.aboutDialogVisible = true},\"showDialogForm\":function($event){_vm.dialogFormVisible = true},\"startCopy\":function($event){_vm.isCoping = true, _vm.backLight = true},\"endCopy\":_vm.endCopy}})],1),_c('el-main',{staticClass:\"main-body\"},[_c('el-row',{staticClass:\"main-section\",attrs:{\"gutter\":10}},[_c('el-col',{attrs:{\"span\":12}},[_c('textarea',{directives:[{name:\"model\",rawName:\"v-model\",value:(_vm.source),expression:\"source\"}],attrs:{\"id\":\"editor\",\"type\":\"textarea\",\"placeholder\":\"Your markdown text here.\"},domProps:{\"value\":(_vm.source)},on:{\"input\":function($event){if($event.target.composing){ return; }_vm.source=$event.target.value}}})]),_c('el-col',{staticClass:\"preview-wrapper\",class:{'preview-wrapper_night': _vm.nightMode && _vm.isCoping},attrs:{\"span\":12,\"id\":\"preview\"}},[_c('section',{class:{'output_night': _vm.nightMode && !_vm.backLight},attrs:{\"id\":\"output-wrapper\"}},[_c('div',{staticClass:\"preview\"},[_c('section',{attrs:{\"id\":\"output\"},domProps:{\"innerHTML\":_vm._s(_vm.output)}}),(_vm.nightMode && _vm.isCoping)?_c('div',{staticClass:\"loading-mask\"},[_c('div',{staticClass:\"loading__img\"}),_c('span',[_vm._v(\"正在生成\")])]):_vm._e()])])]),_c('transition',{attrs:{\"name\":\"custom-classes-transition\",\"enter-active-class\":\"animated bounceInRight\"}},[_c('el-col',{directives:[{name:\"show\",rawName:\"v-show\",value:(_vm.showBox),expression:\"showBox\"}],attrs:{\"id\":\"cssBox\",\"span\":12}},[_c('textarea',{attrs:{\"id\":\"cssEditor\",\"type\":\"textarea\",\"placeholder\":\"Your custom css here.\"}})])],1)],1)],1)],1),_c('about-dialog',{attrs:{\"aboutDialogVisible\":_vm.aboutDialogVisible},on:{\"close\":function($event){_vm.aboutDialogVisible = false}}}),_c('insert-form-dialog',{attrs:{\"dialogFormVisible\":_vm.dialogFormVisible},on:{\"close\":function($event){_vm.dialogFormVisible = false}}})],1)}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","import CodeMirror from \"codemirror/lib/codemirror\";\n(function () {\n CodeMirror.extendMode('css', {\n commentStart: '/*',\n commentEnd: '*/',\n newlineAfterToken: function (type, content) {\n return /^[;{}]$/.test(content)\n }\n })\n\n // Comment/uncomment the specified range\n CodeMirror.defineExtension('commentRange', function (isComment, from, to) {\n var cm = this; var curMode = CodeMirror.innerMode(cm.getMode(), cm.getTokenAt(from).state).mode\n cm.operation(function () {\n if (isComment) { // Comment range\n cm.replaceRange(curMode.commentEnd, to)\n cm.replaceRange(curMode.commentStart, from)\n if (from.line == to.line && from.ch == to.ch) // An empty comment inserted - put cursor inside\n { cm.setCursor(from.line, from.ch + curMode.commentStart.length) }\n } else { // Uncomment range\n var selText = cm.getRange(from, to)\n var startIndex = selText.indexOf(curMode.commentStart)\n var endIndex = selText.lastIndexOf(curMode.commentEnd)\n if (startIndex > -1 && endIndex > -1 && endIndex > startIndex) {\n // Take string till comment start\n selText = selText.substr(0, startIndex) +\n // From comment start till comment end\n selText.substring(startIndex + curMode.commentStart.length, endIndex) +\n // From comment end till string end\n selText.substr(endIndex + curMode.commentEnd.length)\n }\n cm.replaceRange(selText, from, to)\n }\n })\n })\n\n // Applies automatic mode-aware indentation to the specified range\n CodeMirror.defineExtension('autoIndentRange', function (from, to) {\n var cmInstance = this\n this.operation(function () {\n for (var i = from.line; i <= to.line; i++) {\n cmInstance.indentLine(i, 'smart')\n }\n })\n })\n\n // Applies automatic formatting to the specified range\n CodeMirror.defineExtension('autoFormatRange', function (from, to) {\n var cm = this\n var outer = cm.getMode(); var text = cm.getRange(from, to).split('\\n')\n var state = CodeMirror.copyState(outer, cm.getTokenAt(from).state)\n var tabSize = cm.getOption('tabSize')\n\n var out = ''; var lines = 0; var atSol = from.ch == 0\n function newline () {\n out += '\\n'\n atSol = true\n ++lines\n }\n\n for (var i = 0; i < text.length; ++i) {\n var stream = new CodeMirror.StringStream(text[i], tabSize)\n while (!stream.eol()) {\n var inner = CodeMirror.innerMode(outer, state)\n var style = outer.token(stream, state); var cur = stream.current()\n stream.start = stream.pos\n if (!atSol || /\\S/.test(cur)) {\n out += cur\n atSol = false\n }\n if (!atSol && inner.mode.newlineAfterToken &&\n inner.mode.newlineAfterToken(style, cur, stream.string.slice(stream.pos) || text[i + 1] || '', inner.state)) { newline() }\n }\n if (!stream.pos && outer.blankLine) outer.blankLine(state)\n if (!atSol) newline()\n }\n\n cm.operation(function () {\n cm.replaceRange(out, from, to)\n for (var cur = from.line + 1, end = from.line + lines; cur <= end; ++cur) { cm.indentLine(cur, 'smart') }\n cm.setSelection(from, cm.getCursor(false))\n })\n })\n})()\n","import axios from 'axios';\n\n// 创建axios实例\nconst service = axios.create({\n baseURL: '',\n timeout: 10 * 1000 // 请求超时时间\n});\n\nservice.interceptors.request.use(\n config => {\n if (/^(post)|(put)|(delete)$/i.test(config.method)) {\n if (config.data && config.data.upload) {\n config.headers['Content-Type'] = 'multipart/form-data';\n }\n }\n return config;\n }, error => {\n Promise.reject(error);\n }\n);\n\nservice.interceptors.response.use(res => {\n if (res.data.success) {\n return res.data;\n }\n console.log(res);\n return Promise.reject(res.data);\n}, error => Promise.reject(error));\n\nexport default service;","import fetch from './fetch';\n\n\nfunction fileUpload(data) {\n return fetch({\n url: 'https://imgkr.com/api/files/upload',\n method: 'post',\n data: data\n })\n}\n\n\nexport default {\n fileUpload\n};","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('el-container',{staticClass:\"top is-dark\"},[_c('el-upload',{staticClass:\"header__item\",attrs:{\"action\":\"https://imgkr.com/api/files/upload\",\"headers\":{'Content-Type': 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font.value}),attrs:{\"label\":font.label,\"value\":font.value}},[_c('span',{staticClass:\"select-item-left\"},[_vm._v(_vm._s(font.label))]),_c('span',{staticClass:\"select-item-right\"},[_vm._v(\"Abc\")])])}),1)],1),_c('el-form-item',[_c('el-select',{attrs:{\"size\":\"mini\",\"placeholder\":\"选择段落字号\",\"clearable\":\"\"},on:{\"change\":_vm.sizeChanged},model:{value:(_vm.selectSize),callback:function ($$v) {_vm.selectSize=$$v},expression:\"selectSize\"}},_vm._l((_vm.config.sizeOption),function(size){return _c('el-option',{key:size.value,attrs:{\"label\":size.label,\"value\":size.value}},[_c('span',{staticClass:\"select-item-left\"},[_vm._v(_vm._s(size.label))]),_c('span',{staticClass:\"select-item-right\"},[_vm._v(_vm._s(size.desc))])])}),1)],1),_c('el-form-item',[_c('el-select',{attrs:{\"size\":\"mini\",\"placeholder\":\"选择颜色\",\"clearable\":\"\"},on:{\"change\":_vm.colorChanged},model:{value:(_vm.selectColor),callback:function ($$v) {_vm.selectColor=$$v},expression:\"selectColor\"}},_vm._l((_vm.config.colorOption),function(color){return _c('el-option',{key:color.value,attrs:{\"label\":color.label,\"value\":color.value}},[_c('span',{staticClass:\"select-item-left\"},[_vm._v(_vm._s(color.label))]),_c('span',{staticClass:\"select-item-right\"},[_vm._v(_vm._s(color.hex))])])}),1)],1),_c('el-tooltip',{attrs:{\"content\":\"自定义颜色\",\"effect\":_vm.effect,\"placement\":\"top\"}},[_c('el-color-picker',{attrs:{\"size\":\"mini\",\"show-alpha\":\"\"},on:{\"change\":_vm.colorChanged},model:{value:(_vm.selectColor),callback:function ($$v) {_vm.selectColor=$$v},expression:\"selectColor\"}})],1),_c('el-tooltip',{attrs:{\"content\":\"微信外链自动转为文末引用\",\"effect\":_vm.effect,\"placement\":\"top\"}},[_c('el-switch',{staticClass:\"header__switch\",attrs:{\"active-color\":\"#67c23a\",\"inactive-color\":\"#dcdfe6\"},on:{\"change\":_vm.statusChanged},model:{value:(_vm.citeStatus),callback:function ($$v) {_vm.citeStatus=$$v},expression:\"citeStatus\"}})],1)],1),_c('el-tooltip',{staticClass:\"item\",attrs:{\"effect\":_vm.effect,\"content\":\"自定义CSS样式\",\"placement\":\"left\"}},[_c('el-button',{attrs:{\"type\":_vm.btnType,\"plain\":\"\",\"size\":\"medium\",\"icon\":\"el-icon-setting\"},on:{\"click\":_vm.customStyle}})],1),_c('el-button',{attrs:{\"type\":_vm.btnType,\"plain\":\"\",\"size\":\"medium\"},on:{\"click\":_vm.copy}},[_vm._v(\"复制\")]),_c('el-button',{staticClass:\"about\",attrs:{\"type\":_vm.btnType,\"plain\":\"\",\"size\":\"medium\"},on:{\"click\":function($event){return _vm.$emit('showAboutDialog')}}},[_vm._v(\"关于\")]),_c('el-tooltip',{attrs:{\"content\":\"夜间模式\",\"placement\":\"bottom-start\"}},[(!_vm.nightMode)?_c('div',{staticClass:\"mode__switch\",on:{\"click\":_vm.themeChanged}}):_c('div',{staticClass:\"mode__switch mode__switch_black\",on:{\"click\":_vm.themeChanged}})]),_c('resetDialog',{attrs:{\"showResetConfirm\":_vm.showResetConfirm},on:{\"confirm\":_vm.confirmReset,\"close\":_vm.cancelReset}})],1)}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","export default {\n BASE: {\n 'text-align': 'left',\n 'color': '#3f3f3f',\n 'line-height': '1.75',\n },\n BASE_BLOCK: {\n 'margin': '1em 8px'\n },\n block: {\n // 一级标题样式\n h1: {\n 'font-size': '1.2em',\n 'text-align': 'center',\n 'font-weight': 'bold',\n 'display': 'table',\n 'margin': '2em auto 1em',\n 'padding': '0 1em',\n 'border-bottom': '2px solid rgba(0, 152, 116, 0.9)'\n },\n\n // 二级标题样式\n h2: {\n 'font-size': '1.2em',\n 'text-align': 'center',\n 'font-weight': 'bold',\n 'display': 'table',\n 'margin': '4em auto 2em',\n 'padding': '0 0.2em',\n 'background': 'rgba(0, 152, 116, 0.9)',\n 'color': '#fff'\n },\n\n // 三级标题样式\n h3: {\n 'font-weight': 'bold',\n 'font-size': '1.1em',\n 'margin': '2em 8px 0.75em 0',\n 'line-height': '1.2',\n 'padding-left': '8px',\n 'border-left': '3px solid rgba(0, 152, 116, 0.9)'\n },\n\n // 四级标题样式\n h4: {\n 'font-weight': 'bold',\n 'font-size': '1em',\n 'margin': '2em 8px 0.5em',\n 'color': 'rgba(66, 185, 131, 0.9)'\n },\n\n // 段落样式\n p: {\n 'margin': '1.5em 8px',\n 'letter-spacing': '0.1em'\n },\n\n // 引用样式\n blockquote: {\n 'font-style': 'normal',\n 'border-left': 'none',\n 'padding': '1em',\n 'border-radius': '4px',\n 'color': '#FEEEED',\n 'background': 'rgba(27,31,35,.05)',\n 'margin': '2em 8px'\n },\n\n blockquote_p: {\n 'letter-spacing': '0.1em',\n 'color': 'rgb(80, 80, 80)',\n 'font-family': 'PingFangSC-light, PingFangTC-light, Open Sans, Helvetica Neue, sans-serif',\n 'font-size': '1em',\n 'display': 'inline',\n },\n\n code: {\n 'font-size': '80%',\n 'overflow': 'auto',\n 'color': '#333',\n 'background': 'rgb(247, 247, 247)',\n 'border-radius': '2px',\n 'padding': '10px',\n 'line-height': '1.5',\n 'border': '1px solid rgb(236,236,236)',\n 'margin': '20px 0',\n },\n\n image: {\n 'border-radius': '4px',\n 'display': 'block',\n 'margin': '0.1em auto 0.5em',\n 'width': '100% !important',\n },\n\n image_org: {\n 'border-radius': '4px',\n 'display': 'block'\n },\n\n ol: {\n 'margin-left': '0',\n 'padding-left': '1em'\n },\n\n ul: {\n 'margin-left': '0',\n 'padding-left': '1em',\n 'list-style': 'circle'\n },\n\n footnotes: {\n 'margin': '0.5em 8px',\n 'font-size': '80%'\n },\n\n figure: {\n 'margin': '1.5em 8px',\n }\n },\n inline: {\n listitem: {\n 'text-indent': '-1em',\n 'display': 'block',\n 'margin': '0.2em 8px'\n },\n\n codespan: {\n 'font-size': '90%',\n 'color': '#d14',\n 'background': 'rgba(27,31,35,.05)',\n 'padding': '3px 5px',\n 'border-radius': '4px',\n },\n\n link: {\n 'color': '#576b95'\n },\n\n wx_link: {\n 'color': '#576b95',\n 'text-decoration': 'none',\n },\n\n // 字体加粗样式\n strong: {\n 'color': 'rgba(15, 76, 129, 0.9)',\n 'font-weight': 'bold',\n },\n\n table: {\n 'border-collapse': 'collapse',\n 'text-align': 'center',\n 'margin': '1em 8px'\n },\n\n thead: {\n 'background': 'rgba(0, 0, 0, 0.05)',\n 'font-weight': 'bold'\n },\n\n td: {\n 'border': '1px solid #dfdfdf',\n 'padding': '0.25em 0.5em'\n },\n\n footnote: {\n 'font-size': '12px'\n },\n\n figcaption: {\n 'text-align': 'center',\n 'color': '#888',\n 'font-size': '0.8em'\n }\n }\n};\n","import default_theme from './themes/default-theme'\nimport prettier from 'prettier/standalone'\nimport prettierMarkdown from 'prettier/parser-markdown'\n\n\n// 设置自定义颜色\nexport function setColorWithTemplate (template) {\n return function (color) {\n let custom_theme = JSON.parse(JSON.stringify(template))\n custom_theme.block.h1['border-bottom'] = `2px solid ${color}`\n custom_theme.block.h2['background'] = color\n custom_theme.block.h3['border-left'] = `3px solid ${color}`\n custom_theme.block.h4['color'] = color\n custom_theme.inline.strong['color'] = color\n return custom_theme\n }\n}\n\nexport const setColorWithCustomTemplate = function setColorWithCustomTemplate (\n template,\n color\n) {\n let custom_theme = JSON.parse(JSON.stringify(template))\n custom_theme.block.h1['border-bottom'] = `2px solid ${color}`\n custom_theme.block.h2['background'] = color\n custom_theme.block.h3['border-left'] = `3px solid ${color}`\n custom_theme.block.h4['color'] = color\n custom_theme.inline.strong['color'] = color\n return custom_theme\n}\n\n// 设置自定义字体大小\nexport function setFontSizeWithTemplate (template) {\n return function (fontSize) {\n let custom_theme = JSON.parse(JSON.stringify(template))\n custom_theme.block.h1['font-size'] = `${fontSize * 1.14}px`\n custom_theme.block.h2['font-size'] = `${fontSize * 1.1}px`\n custom_theme.block.h3['font-size'] = `${fontSize}px`\n custom_theme.block.h4['font-size'] = `${fontSize}px`\n return custom_theme\n }\n}\n\nexport const setColor = setColorWithTemplate(default_theme)\nexport const setFontSize = setFontSizeWithTemplate(default_theme)\n\nexport function customCssWithTemplate (jsonString, color, theme) {\n let custom_theme = JSON.parse(JSON.stringify(theme))\n // block\n custom_theme.block.h1['border-bottom'] = `2px solid ${color}`\n custom_theme.block.h2['background'] = color\n custom_theme.block.h3['border-left'] = `3px solid ${color}`\n custom_theme.block.h4['color'] = color\n custom_theme.inline.strong['color'] = color\n\n custom_theme.block.h1 = Object.assign(custom_theme.block.h1, jsonString.h1)\n custom_theme.block.h2 = Object.assign(custom_theme.block.h2, jsonString.h2)\n custom_theme.block.h3 = Object.assign(custom_theme.block.h3, jsonString.h3)\n custom_theme.block.h4 = Object.assign(custom_theme.block.h4, jsonString.h4)\n custom_theme.block.p = Object.assign(custom_theme.block.p, jsonString.p)\n custom_theme.block.blockquote = Object.assign(\n custom_theme.block.blockquote,\n jsonString.blockquote\n )\n custom_theme.block.blockquote_p = Object.assign(\n custom_theme.block.blockquote_p,\n jsonString.blockquote_p\n )\n custom_theme.block.image = Object.assign(\n custom_theme.block.image,\n jsonString.image\n )\n\n // inline\n custom_theme.inline.strong = Object.assign(\n custom_theme.inline.strong,\n jsonString.strong\n )\n custom_theme.inline.codespan = Object.assign(\n custom_theme.inline.codespan,\n jsonString.codespan\n )\n custom_theme.inline.link = Object.assign(\n custom_theme.inline.link,\n jsonString.link\n )\n custom_theme.inline.wx_link = Object.assign(\n custom_theme.inline.wx_link,\n jsonString.wx_link\n )\n\n return custom_theme\n}\n\n/**\n * 将CSS形式的字符串转换为JSON\n *\n * @param {css字符串} css\n */\nexport function css2json (css) {\n // 移除CSS所有注释\n while (\n (open = css.indexOf('/*')) !== -1 &&\n (close = css.indexOf('*/')) !== -1\n ) {\n css = css.substring(0, open) + css.substring(close + 2)\n }\n\n // 初始化返回值\n let json = {}\n\n while (css.length > 0 && css.indexOf('{') !== -1 && css.indexOf('}') !== -1) {\n // 存储第一个左/右花括号的下标\n const lbracket = css.indexOf('{')\n const rbracket = css.indexOf('}')\n\n // 第一步：将声明转换为Object，如：\n // `font: 'Times New Roman' 1em; color: #ff0000; margin-top: 1em;`\n // ==>\n // `{\"font\": \"'Times New Roman' 1em\", \"color\": \"#ff0000\", \"margin-top\": \"1em\"}`\n\n // 辅助方法：将array转为object\n function toObject (array) {\n let ret = {}\n array.forEach(e => {\n const index = e.indexOf(':')\n const property = e.substring(0, index).trim()\n const value = e.substring(index + 1).trim()\n ret[property] = value\n })\n return ret\n }\n\n // 切割声明块并移除空白符，然后放入数组中\n let declarations = css\n .substring(lbracket + 1, rbracket)\n .split(';')\n .map(e => e.trim())\n .filter(e => e.length > 0) // 移除所有\"\"空值\n\n // 转为Object对象\n declarations = toObject(declarations)\n\n // 第二步：选择器处理，每个选择器会与它对应的声明相关联，如：\n // `h1, p#bar {color: red}`\n // ==>\n // {\"h1\": {color: red}, \"p#bar\": {color: red}}\n\n let selectors = css\n .substring(0, lbracket)\n // 以,切割，并移除空格：`\"h1, p#bar, span.foo\"` => [\"h1\", \"p#bar\", \"span.foo\"]\n .split(',')\n .map(selector => selector.trim())\n\n // 迭代赋值\n selectors.forEach(selector => {\n // 若不存在，则先初始化\n if (!json[selector]) json[selector] = {}\n // 赋值到JSON\n Object.keys(declarations).forEach(key => {\n json[selector][key] = declarations[key]\n })\n })\n\n // 继续下个声明块\n css = css.slice(rbracket + 1).trim()\n }\n\n // 返回JSON形式的结果串\n return json\n}\n\n\n/**\n * 将编辑器内容保存到 LocalStorage\n * @param {*} editor \n * @param {*} name \n */\nexport function saveEditorContent(editor, name) {\n const content = editor.getValue(0)\n\n if (content) {\n localStorage.setItem(name, content)\n } else {\n localStorage.removeItem(name)\n }\n}\n\nexport function isImageIllegal(file) {\n if (!/\\.(gif|jpg|jpeg|png|GIF|JPG|PNG)$/.test(file.name)) {\n return '请上传 JPG/PNG/GIF 格式的图片';\n }\n if (file.size > 5 * 1024 * 1024) {\n return '由于公众号限制，图片大小不能超过 5.0M';\n }\n return false;\n}\n\nexport function formatDoc(content) {\n const doc = prettier.format(content, {\n parser: 'markdown',\n plugins: [prettierMarkdown]\n })\n return doc\n}","import juice from 'juice'\n\nexport function solveWeChatImage() {\n const clipboardDiv = document.getElementById('output');\n const images = clipboardDiv.getElementsByTagName(\"img\");\n for (let i = 0; i < images.length; i++) {\n const image = images[i];\n const width = image.getAttribute(\"width\");\n const height = image.getAttribute(\"height\");\n image.removeAttribute(\"width\");\n image.removeAttribute(\"height\");\n image.style.width = width;\n image.style.height = height;\n }\n}\nexport function solveHtml(nightMode = false) {\n const element = document.getElementById(\"output-wrapper\");\n let html = element.innerHTML\n let res = \"\";\n res = juice.inlineContent(\n html,\n {\n inlinePseudoElements: true,\n preserveImportant: true\n }\n );\n return res;\n}","export default {\n builtinFonts: [\n {\n label: '无衬线',\n value: '-apple-system-font,BlinkMacSystemFont, Helvetica Neue, PingFang SC, Hiragino Sans GB , Microsoft YaHei UI , Microsoft YaHei ,Arial,sans-serif'\n },\n {\n label: '衬线',\n value: \"Optima-Regular, Optima, PingFangSC-light, PingFangTC-light, 'PingFang SC', Cambria, Cochin, Georgia, Times, 'Times New Roman', serif\"\n }\n ],\n sizeOption: [\n {\n label: '12px',\n value: '12px',\n desc: '更小'\n },\n {\n label: '13px',\n value: '13px',\n desc: '稍小'\n },\n {\n label: '14px',\n value: '14px',\n desc: '推荐'\n },\n {\n label: '15px',\n value: '15px',\n desc: '稍大'\n },\n {\n label: '16px',\n value: '16px',\n desc: '更大'\n }\n ],\n colorOption: [\n {\n label: '经典蓝',\n value: 'rgba(15, 76, 129, 1)',\n hex: '最新流行'\n },\n {\n label: '翡翠绿',\n value: 'rgba(0, 152, 116, 1)',\n hex: '优雅清新'\n },\n {\n label: '活力橘',\n value: 'rgba(250, 81, 81, 1)',\n hex: '热情活泼'\n }\n ],\n form: {\n rows: 1,\n cols: 1\n }\n};","const DEFAULT_CSS_CONTENT =\n`/*\n 按Ctrl+F可格式化\n*/\n/* 一级标题样式 */\nh1 {\n}\n/* 二级标题样式 */\nh2 {\n}\n/* 三级标题样式 */\nh3 {\n}\n/* 四级标题样式 */\nh4 {\n}\n/* 图片样式 */\nimage {\n}\n/* 引用样式 */\nblockquote {\n}\n/* 引用段落样式 */\nblockquote_p {\n}\n/* 段落样式 */\np {\n}\n/* 行内代码样式 */\ncodespan {\n}\n/* 粗体样式 */\nstrong {\n}\n/* 链接样式 */\nlink {\n}\n/* 微信链接样式 */\nwx_link {\n}\n`\nexport default DEFAULT_CSS_CONTENT\n","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('el-dialog',{staticClass:\"reset__dialog\",attrs:{\"title\":\"提示\",\"visible\":_vm.showResetConfirm},on:{\"close\":function($event){return _vm.$emit('close')}}},[_c('div',{staticClass:\"text\"},[_vm._v(\" 此操作将丢失本地缓存的文本和自定义样式，是否继续? \")]),_c('div',{staticClass:\"dialog-footer\",attrs:{\"slot\":\"footer\"},slot:\"footer\"},[_c('el-button',{attrs:{\"type\":_vm.btnType,\"plain\":\"\"},on:{\"click\":function($event){return _vm.$emit('close')}}},[_vm._v(\"取 消\")]),_c('el-button',{attrs:{\"type\":_vm.btnType,\"plain\":\"\"},on:{\"click\":function($event){return _vm.$emit('confirm')}}},[_vm._v(\"确 定\")])],1)])}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","\n \n
\n Loading...
\n \n \n 此操作将丢失本地缓存的文本和自定义样式，是否继续?\n
\n \n \n
\n 一款高度简洁的微信 Markdown 编辑器
\n\n ![](\"https://imgkr.cn-bj.ufileos.com/09f8e662-42ed-4731-a0d7-419deb74dfb6.png\")
\n
\n \n 扫码关注我的公众号，原创技术文章第一时间推送！
\n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n
\n\n\n\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--12-0!../../node_modules/thread-loader/dist/cjs.js!../../node_modules/babel-loader/lib/index.js!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./CodemirrorEditor.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--12-0!../../node_modules/thread-loader/dist/cjs.js!../../node_modules/babel-loader/lib/index.js!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./CodemirrorEditor.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./CodemirrorEditor.vue?vue&type=template&id=66ac7c7c&scoped=true&\"\nimport script from \"./CodemirrorEditor.vue?vue&type=script&lang=js&\"\nexport * from \"./CodemirrorEditor.vue?vue&type=script&lang=js&\"\nimport style0 from \"./CodemirrorEditor.vue?vue&type=style&index=0&id=66ac7c7c&lang=less&scoped=true&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n script,\n render,\n staticRenderFns,\n false,\n null,\n \"66ac7c7c\",\n null\n \n)\n\nexport default component.exports","\n \n \n \n
\n \n \n 正在生成\n
\n [${x[0]}]: ${x[1]}`\n }\n return `
[${x[0]}] ${x[1]}: ${x[2]}`\n })\n return `
引用链接
${footnoteArray.join('\\n')}
`\n }\n\n this.buildAddition = () => {\n return `\n \n `\n }\n\n this.setOptions = newOpts => {\n this.opts = merge(this.opts, newOpts)\n }\n\n this.hasFootnotes = () => footnotes.length !== 0\n\n this.getRenderer = (status) => {\n footnotes = []\n footnoteIndex = 0\n\n styleMapping = this.buildTheme(this.opts.theme)\n let renderer = new marked.Renderer()\n\n renderer.heading = (text, level) => {\n switch (level) {\n case 1:\n return `${text}
`\n case 2:\n return `${text}
`\n case 3:\n return `${text}
`\n default:\n return `${text}
`\n }\n }\n renderer.paragraph = text => `${text}
`\n\n renderer.blockquote = text => {\n text = text.replace(/`)\n return `
${text}`\n }\n renderer.code = (text, infoString) => {\n text = text.replace(//g, '>')\n\n let lines = text.split('\\n')\n let codeLines = []\n let numbers = []\n\n for (let i = 0; i < lines.length; i++) {\n const line = lines[i]\n codeLines.push(`
${(line || '
')}`)\n numbers.push('')\n }\n let lang = infoString || ''\n\n return `\n - ${numbers.join('')}
\n ${codeLines.join('')}\n \n ${text}`\n renderer.listitem = text => `<%s/>${text}`\n\n renderer.list = (text, ordered, start) => {\n text = text.replace(/<\\/*p.*?>/g, '')\n let segments = text.split(`<%s/>`)\n if (!ordered) {\n text = segments.join('•')\n return `${text}
`\n }\n text = segments[0]\n for (let i = 1; i < segments.length; i++) {\n text = text + i + '.' + segments[i]\n }\n return `${text}
`\n }\n renderer.image = (href, title, text) => {\n let subText = ''\n if (text) {\n subText = `${text}
`\n renderer.table = (header, body) => ``\n return renderer\n }\n}\nexport default WxRenderer\n","const DEFAULT_CONTENT =\n`# 示例文章：Google 搜索的即时自动补全功能究竟是如何“工作”的？\n> Google 搜索**自动补全功能**的强大，相信不少朋友都能感受到，它帮助我们更快地“补全”我们所要输入的搜索关键字。那么，它怎么知道我们要输入什么内容？它又是如何工作的？在这篇文章里，我们一起来看看。\n\n## 使用自动补全\nGoogle 搜索的自动补全功能可以在 Google 搜索应用的大多数位置使用，包括 [Google](https://www.google.com/) 主页、适用于 IOS 和 Android 的 Google 应用，我们只需要在 Google 搜索框上开始键入关键字，就可以看到联想词了。\n\n\n\n在上图示例中，我们可以看到，输入关键字 \\`juej\\`，Google 搜索会联想到“掘金”、“掘金小册”、“绝句”等等，好处就是，我们无须输入完整的关键字即可轻松完成针对这些 topics 的搜索。\n\n谷歌搜索的自动补全功能对于使用移动设备的用户来说特别有用，用户可以轻松在难以键入的小屏幕上完成搜索。当然，对于移动设备用户和台式机用户而言，这都节省了大量的时间。根据 Google 官方报告，自动补全功能可以减少大约 25% 的打字，累积起来，预计每天可以节省 200 多年的打字时间。是的，每天！\n\n> 注意，本文所提到的“**联想词**”与“**预测**”，是同一个意思。\n\n## 基于“预测”而非“建议”\nGoogle 官方将自动补全功能称之为“预测”，而不是“建议”，为什么呢？其实是有充分理由的。自动补全功能是为了**帮助用户完成他们打算进行的搜索**，而不是建议用户要执行什么搜索。\n\n那么，Google 是如何确定这些“预测”的？其实，Google 会根据趋势搜索 [trends](https://trends.google.com/trends/?geo=US) 给到我们这些“预测”。简单来说，哪个热门、哪个搜索频率高，就更可能推给我们。当然，这也与我们当前所处的位置以及我们的搜索历史相关。\n\n另外，这些“预测”也会随着我们键入的关键字的变更而更改。例如，当我们把键入的关键字从 \\`juej\\` 更改为 \\`juex\\` 时，与“掘金”相关的预测会“消失”，同时，与“觉醒”、“决心”相关联的词会出现。\n\n\n\n## 为什么看不到某些联想词？\n如果我们在输入某个关键字时看不到联想词，那么表明 Google 的算法可能检测到：\n\n- 这个关键字不是热门字词；\n- 搜索的字词太新了，我们可能需要等待几天或几周才能看到联想词；\n- 这是一个侮辱性或敏感字词，这个搜索字词违反了 Google 的相关政策。更加详细的情况，可以了解 [Google 搜索自动补全政策](https://support.google.com/websearch/answer/7368877)。\n\n## 为什么会看到某些不当的联想词？\nGoogle 拥有专门设计的系统，可以自动捕获不适当的预测结果而不显示出来。然而，Google 每天需要处理数十亿次搜索，这意味着 Google 每天会显示数十亿甚至上百亿条预测。再好的系统，也可能存在缺陷，不正确的预测也可能随时会出现。\n\n我们作为 Google 搜索的用户，如果认定某条预测违反了相关的搜索自动补全政策，可以进行举报反馈，点击右下角“**举报不当的联想查询**”并勾选相关选项即可。\n\n\n\n## 如何实现自动补全算法？\n目前，Google 官方似乎并没有公开搜索自动补全的算法实现，但是业界在这方面已经有了不少研究。\n\n一个好的自动补全器必须是快速的，并且在用户键入下一个字符后立即更新联想词列表。**自动补全器的核心是一个函数，它接受输入的前缀，并搜索以给定前缀开头的词汇或语句列表**。通常来说，只需要返回少量的数目即可。\n\n接下来，我们先从一个简单且低效的实现开始，并在此基础上逐步构建更高效的方法。\n\n### 词汇表实现\n一个**简单粗暴的实现方式**是：顺序查找词汇表，依次检查每个词汇，看它是否以给定的前缀开头。\n\n但是，此方法需要将前缀与每个词汇进行匹配检查，若词汇量较少，这种方式可能勉强行得通。但是，如果词汇量规模较大，效率就太低了。\n\n一个**更好的实现方式是**：让词汇按字典顺序排序。借助二分搜索算法，可以快速搜索有序词汇表中的前缀。由于二分搜索的每一步都会将搜索的范围减半，因此，总的搜索时间与词汇表中单词数量的对数成正比，即时间复杂度是 \\`O(log N)\\`。二分搜索的性能很好，但有没有更好的实现呢？当然有，往下看。\n\n### 前缀树实现\n通常来说，许多词汇都以相同的前缀开头，比如 \\`need\\`、\\`nested\\` 都以 \\`ne\\` 开头，\\`seed\\`、\\`speed\\` 都以 \\`s\\` 开头。要是为每个单词分别存储公共前缀似乎很浪费。\n\n\n\n前缀树是一种利用公共前缀来加速补全速度的数据结构。前缀树在节点树中排列一组单词，单词沿着从根节点到叶子节点的路径存储，树的层次对应于前缀的字母位置。\n\n前缀的补全是顺着前缀定义的路径来查找的。例如，在上图的前缀树中，前缀 \\`ne\\` 对应于从子节点取左边缘 \\`N\\` 和唯一边缘 \\`E\\` 的路径。然后可以通过继续遍历从 \\`E\\` 节点可以达到的所有叶节点来生成补全列表。在图中，\\`ne\\` 的补全可以是两个分支：\\`-ed\\` 和 \\`-sted\\`。如果在数中找不到由前缀定义的路径，则说明词汇表中不包含以该前缀开头的单词。\n\n### 有限状态自动机(DFA)实现\n前缀树可以有效处理公共前缀，但是，对于其他共享词部分，仍会分别存储在每个分支中。比如，后缀 \\`ed\\`、\\`ing\\`、\\`tion\\` 在英文单词中特别常见。在上一个例子中，\\`e\\`、\\`d\\` 分别存放在了每一个分支上。\n\n有没有一种方法可以更加节省存储空间呢？有的，那就是 DFA。\n\n
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function(module) {\n/******/ \t\tvar getter = module && module.__esModule ?\n/******/ \t\t\tfunction getDefault() { return module['default']; } :\n/******/ \t\t\tfunction getModuleExports() { return module; };\n/******/ \t\t__webpack_require__.d(getter, 'a', getter);\n/******/ \t\treturn getter;\n/******/ \t};\n/******/\n/******/ \t// Object.prototype.hasOwnProperty.call\n/******/ \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n/******/\n/******/ \t// __webpack_public_path__\n/******/ \t__webpack_require__.p = \"/dist/\";\n/******/\n/******/\n/******/ \t// Load entry module and return exports\n/******/ \treturn __webpack_require__(__webpack_require__.s = 59);\n/******/ })\n/************************************************************************/\n/******/ ({\n\n/***/ 0:\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"a\", function() { return normalizeComponent; });\n/* globals __VUE_SSR_CONTEXT__ */\n\n// IMPORTANT: Do NOT use ES2015 features in this file (except for modules).\n// This module is a runtime utility for cleaner component module output and will\n// be included in the final webpack user bundle.\n\nfunction normalizeComponent (\n scriptExports,\n render,\n staticRenderFns,\n functionalTemplate,\n injectStyles,\n scopeId,\n moduleIdentifier, /* server only */\n shadowMode /* vue-cli only */\n) {\n // Vue.extend constructor export interop\n var options = typeof scriptExports === 'function'\n ? scriptExports.options\n : scriptExports\n\n // render functions\n if (render) {\n options.render = render\n options.staticRenderFns = staticRenderFns\n options._compiled = true\n }\n\n // functional template\n if (functionalTemplate) {\n options.functional = true\n }\n\n // scopedId\n if (scopeId) {\n options._scopeId = 'data-v-' + scopeId\n }\n\n var hook\n if (moduleIdentifier) { // server build\n hook = function (context) {\n // 2.3 injection\n context =\n context || // cached call\n (this.$vnode && this.$vnode.ssrContext) || // stateful\n (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional\n // 2.2 with runInNewContext: true\n if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {\n context = __VUE_SSR_CONTEXT__\n }\n // inject component styles\n if (injectStyles) {\n injectStyles.call(this, context)\n }\n // register component module identifier for async chunk inferrence\n if (context && context._registeredComponents) {\n context._registeredComponents.add(moduleIdentifier)\n }\n }\n // used by ssr in case component is cached and beforeCreate\n // never gets called\n options._ssrRegister = hook\n } else if (injectStyles) {\n hook = shadowMode\n ? function () { injectStyles.call(this, this.$root.$options.shadowRoot) }\n : injectStyles\n }\n\n if (hook) {\n if (options.functional) {\n // for template-only hot-reload because in that case the render fn doesn't\n // go through the normalizer\n options._injectStyles = hook\n // register for functioal component in vue file\n var originalRender = options.render\n options.render = function renderWithStyleInjection (h, context) {\n hook.call(context)\n return originalRender(h, context)\n }\n } else {\n // inject component registration as beforeCreate hook\n var existing = options.beforeCreate\n options.beforeCreate = existing\n ? [].concat(existing, hook)\n : [hook]\n }\n }\n\n return {\n exports: scriptExports,\n options: options\n }\n}\n\n\n/***/ }),\n\n/***/ 14:\n/***/ (function(module, exports) {\n\nmodule.exports = require(\"element-ui/lib/scrollbar\");\n\n/***/ }),\n\n/***/ 18:\n/***/ (function(module, exports) {\n\nmodule.exports = require(\"element-ui/lib/checkbox\");\n\n/***/ }),\n\n/***/ 21:\n/***/ (function(module, exports) {\n\nmodule.exports = require(\"element-ui/lib/utils/shared\");\n\n/***/ }),\n\n/***/ 26:\n/***/ (function(module, exports) {\n\nmodule.exports = require(\"babel-helper-vue-jsx-merge-props\");\n\n/***/ }),\n\n/***/ 3:\n/***/ (function(module, exports) {\n\nmodule.exports = require(\"element-ui/lib/utils/util\");\n\n/***/ }),\n\n/***/ 31:\n/***/ (function(module, exports) {\n\nmodule.exports = require(\"element-ui/lib/utils/scroll-into-view\");\n\n/***/ }),\n\n/***/ 32:\n/***/ (function(module, exports) {\n\nmodule.exports = require(\"element-ui/lib/utils/aria-utils\");\n\n/***/ }),\n\n/***/ 51:\n/***/ (function(module, exports) {\n\nmodule.exports = require(\"element-ui/lib/radio\");\n\n/***/ }),\n\n/***/ 59:\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n__webpack_require__.r(__webpack_exports__);\n\n// CONCATENATED MODULE: ./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/vue-loader/lib??vue-loader-options!./packages/cascader-panel/src/cascader-panel.vue?vue&type=template&id=34932346&\nvar cascader_panelvue_type_template_id_34932346_render = function() {\n var _vm = this\n var _h = _vm.$createElement\n var _c = _vm._self._c || _h\n return _c(\n \"div\",\n {\n class: [\"el-cascader-panel\", _vm.border && \"is-bordered\"],\n on: { keydown: _vm.handleKeyDown }\n },\n _vm._l(_vm.menus, function(menu, index) {\n return _c(\"cascader-menu\", {\n key: index,\n ref: \"menu\",\n refInFor: true,\n attrs: { index: index, nodes: menu }\n })\n }),\n 1\n )\n}\nvar staticRenderFns = []\ncascader_panelvue_type_template_id_34932346_render._withStripped = true\n\n\n// CONCATENATED MODULE: ./packages/cascader-panel/src/cascader-panel.vue?vue&type=template&id=34932346&\n\n// EXTERNAL MODULE: external \"babel-helper-vue-jsx-merge-props\"\nvar external_babel_helper_vue_jsx_merge_props_ = __webpack_require__(26);\nvar external_babel_helper_vue_jsx_merge_props_default = /*#__PURE__*/__webpack_require__.n(external_babel_helper_vue_jsx_merge_props_);\n\n// EXTERNAL MODULE: external \"element-ui/lib/scrollbar\"\nvar scrollbar_ = __webpack_require__(14);\nvar scrollbar_default = /*#__PURE__*/__webpack_require__.n(scrollbar_);\n\n// EXTERNAL MODULE: external \"element-ui/lib/checkbox\"\nvar checkbox_ = __webpack_require__(18);\nvar checkbox_default = /*#__PURE__*/__webpack_require__.n(checkbox_);\n\n// EXTERNAL MODULE: external \"element-ui/lib/radio\"\nvar radio_ = __webpack_require__(51);\nvar radio_default = /*#__PURE__*/__webpack_require__.n(radio_);\n\n// EXTERNAL MODULE: external \"element-ui/lib/utils/util\"\nvar util_ = __webpack_require__(3);\n\n// CONCATENATED MODULE: ./node_modules/babel-loader/lib!./node_modules/vue-loader/lib??vue-loader-options!./packages/cascader-panel/src/cascader-node.vue?vue&type=script&lang=js&\n\n\n\n\n\n\nvar stopPropagation = function stopPropagation(e) {\n return e.stopPropagation();\n};\n\n/* harmony default export */ var cascader_nodevue_type_script_lang_js_ = ({\n inject: ['panel'],\n\n components: {\n ElCheckbox: checkbox_default.a,\n ElRadio: radio_default.a\n },\n\n props: {\n node: {\n required: true\n },\n nodeId: String\n },\n\n computed: {\n config: function config() {\n return this.panel.config;\n },\n isLeaf: function isLeaf() {\n return this.node.isLeaf;\n },\n isDisabled: function isDisabled() {\n return this.node.isDisabled;\n },\n checkedValue: function checkedValue() {\n return this.panel.checkedValue;\n },\n isChecked: function isChecked() {\n return this.node.isSameNode(this.checkedValue);\n },\n inActivePath: function inActivePath() {\n return this.isInPath(this.panel.activePath);\n },\n inCheckedPath: function inCheckedPath() {\n var _this = this;\n\n if (!this.config.checkStrictly) return false;\n\n return this.panel.checkedNodePaths.some(function (checkedPath) {\n return _this.isInPath(checkedPath);\n });\n },\n value: function value() {\n return this.node.getValueByOption();\n }\n },\n\n methods: {\n handleExpand: function handleExpand() {\n var _this2 = this;\n\n var panel = this.panel,\n node = this.node,\n isDisabled = this.isDisabled,\n config = this.config;\n var multiple = config.multiple,\n checkStrictly = config.checkStrictly;\n\n\n if (!checkStrictly && isDisabled || node.loading) return;\n\n if (config.lazy && !node.loaded) {\n panel.lazyLoad(node, function () {\n // do not use cached leaf value here, invoke this.isLeaf to get new value.\n var isLeaf = _this2.isLeaf;\n\n\n if (!isLeaf) _this2.handleExpand();\n if (multiple) {\n // if leaf sync checked state, else clear checked state\n var checked = isLeaf ? node.checked : false;\n _this2.handleMultiCheckChange(checked);\n }\n });\n } else {\n panel.handleExpand(node);\n }\n },\n handleCheckChange: function handleCheckChange() {\n var panel = this.panel,\n value = this.value,\n node = this.node;\n\n panel.handleCheckChange(value);\n panel.handleExpand(node);\n },\n handleMultiCheckChange: function handleMultiCheckChange(checked) {\n this.node.doCheck(checked);\n this.panel.calculateMultiCheckedValue();\n },\n isInPath: function isInPath(pathNodes) {\n var node = this.node;\n\n var selectedPathNode = pathNodes[node.level - 1] || {};\n return selectedPathNode.uid === node.uid;\n },\n renderPrefix: function renderPrefix(h) {\n var isLeaf = this.isLeaf,\n isChecked = this.isChecked,\n config = this.config;\n var checkStrictly = config.checkStrictly,\n multiple = config.multiple;\n\n\n if (multiple) {\n return this.renderCheckbox(h);\n } else if (checkStrictly) {\n return this.renderRadio(h);\n } else if (isLeaf && isChecked) {\n return this.renderCheckIcon(h);\n }\n\n return null;\n },\n renderPostfix: function renderPostfix(h) {\n var node = this.node,\n isLeaf = this.isLeaf;\n\n\n if (node.loading) {\n return this.renderLoadingIcon(h);\n } else if (!isLeaf) {\n return this.renderExpandIcon(h);\n }\n\n return null;\n },\n renderCheckbox: function renderCheckbox(h) {\n var node = this.node,\n config = this.config,\n isDisabled = this.isDisabled;\n\n var events = {\n on: { change: this.handleMultiCheckChange },\n nativeOn: {}\n };\n\n if (config.checkStrictly) {\n // when every node is selectable, click event should not trigger expand event.\n events.nativeOn.click = stopPropagation;\n }\n\n return h('el-checkbox', external_babel_helper_vue_jsx_merge_props_default()([{\n attrs: {\n value: node.checked,\n indeterminate: node.indeterminate,\n disabled: isDisabled\n }\n }, events]));\n },\n renderRadio: function renderRadio(h) {\n var checkedValue = this.checkedValue,\n value = this.value,\n isDisabled = this.isDisabled;\n\n // to keep same reference if value cause radio's checked state is calculated by reference comparision;\n\n if (Object(util_[\"isEqual\"])(value, checkedValue)) {\n value = checkedValue;\n }\n\n return h(\n 'el-radio',\n {\n attrs: {\n value: checkedValue,\n label: value,\n disabled: isDisabled\n },\n on: {\n 'change': this.handleCheckChange\n },\n nativeOn: {\n 'click': stopPropagation\n }\n },\n [h('span')]\n );\n },\n renderCheckIcon: function renderCheckIcon(h) {\n return h('i', { 'class': 'el-icon-check el-cascader-node__prefix' });\n },\n renderLoadingIcon: function renderLoadingIcon(h) {\n return h('i', { 'class': 'el-icon-loading el-cascader-node__postfix' });\n },\n renderExpandIcon: function renderExpandIcon(h) {\n return h('i', { 'class': 'el-icon-arrow-right el-cascader-node__postfix' });\n },\n renderContent: function renderContent(h) {\n var panel = this.panel,\n node = this.node;\n\n var render = panel.renderLabelFn;\n var vnode = render ? render({ node: node, data: node.data }) : null;\n\n return h(\n 'span',\n { 'class': 'el-cascader-node__label' },\n [vnode || node.label]\n );\n }\n },\n\n render: function render(h) {\n var _this3 = this;\n\n var inActivePath = this.inActivePath,\n inCheckedPath = this.inCheckedPath,\n isChecked = this.isChecked,\n isLeaf = this.isLeaf,\n isDisabled = this.isDisabled,\n config = this.config,\n nodeId = this.nodeId;\n var expandTrigger = config.expandTrigger,\n checkStrictly = config.checkStrictly,\n multiple = config.multiple;\n\n var disabled = !checkStrictly && isDisabled;\n var events = { on: {} };\n\n if (expandTrigger === 'click') {\n events.on.click = this.handleExpand;\n } else {\n events.on.mouseenter = function (e) {\n _this3.handleExpand();\n _this3.$emit('expand', e);\n };\n events.on.focus = function (e) {\n _this3.handleExpand();\n _this3.$emit('expand', e);\n };\n }\n if (isLeaf && !isDisabled && !checkStrictly && !multiple) {\n events.on.click = this.handleCheckChange;\n }\n\n return h(\n 'li',\n external_babel_helper_vue_jsx_merge_props_default()([{\n attrs: {\n role: 'menuitem',\n id: nodeId,\n 'aria-expanded': inActivePath,\n tabindex: disabled ? null : -1\n },\n 'class': {\n 'el-cascader-node': true,\n 'is-selectable': checkStrictly,\n 'in-active-path': inActivePath,\n 'in-checked-path': inCheckedPath,\n 'is-active': isChecked,\n 'is-disabled': disabled\n }\n }, events]),\n [this.renderPrefix(h), this.renderContent(h), this.renderPostfix(h)]\n );\n }\n});\n// CONCATENATED MODULE: ./packages/cascader-panel/src/cascader-node.vue?vue&type=script&lang=js&\n /* harmony default export */ var src_cascader_nodevue_type_script_lang_js_ = (cascader_nodevue_type_script_lang_js_); \n// EXTERNAL MODULE: ./node_modules/vue-loader/lib/runtime/componentNormalizer.js\nvar componentNormalizer = __webpack_require__(0);\n\n// CONCATENATED MODULE: ./packages/cascader-panel/src/cascader-node.vue\nvar cascader_node_render, cascader_node_staticRenderFns\n\n\n\n\n/* normalize component */\n\nvar component = Object(componentNormalizer[\"a\" /* default */])(\n src_cascader_nodevue_type_script_lang_js_,\n cascader_node_render,\n cascader_node_staticRenderFns,\n false,\n null,\n null,\n null\n \n)\n\n/* hot reload */\nif (false) { var api; }\ncomponent.options.__file = \"packages/cascader-panel/src/cascader-node.vue\"\n/* harmony default export */ var cascader_node = (component.exports);\n// EXTERNAL MODULE: external \"element-ui/lib/mixins/locale\"\nvar locale_ = __webpack_require__(6);\nvar locale_default = /*#__PURE__*/__webpack_require__.n(locale_);\n\n// CONCATENATED MODULE: ./node_modules/babel-loader/lib!./node_modules/vue-loader/lib??vue-loader-options!./packages/cascader-panel/src/cascader-menu.vue?vue&type=script&lang=js&\n\n\n\n\n\n\n\n/* harmony default export */ var cascader_menuvue_type_script_lang_js_ = ({\n name: 'ElCascaderMenu',\n\n mixins: [locale_default.a],\n\n inject: ['panel'],\n\n components: {\n ElScrollbar: scrollbar_default.a,\n CascaderNode: cascader_node\n },\n\n props: {\n nodes: {\n type: Array,\n required: true\n },\n index: Number\n },\n\n data: function data() {\n return {\n activeNode: null,\n hoverTimer: null,\n id: Object(util_[\"generateId\"])()\n };\n },\n\n\n computed: {\n isEmpty: function isEmpty() {\n return !this.nodes.length;\n },\n menuId: function menuId() {\n return 'cascader-menu-' + this.id + '-' + this.index;\n }\n },\n\n methods: {\n handleExpand: function handleExpand(e) {\n this.activeNode = e.target;\n },\n handleMouseMove: function handleMouseMove(e) {\n var activeNode = this.activeNode,\n hoverTimer = this.hoverTimer;\n var hoverZone = this.$refs.hoverZone;\n\n\n if (!activeNode || !hoverZone) return;\n\n if (activeNode.contains(e.target)) {\n clearTimeout(hoverTimer);\n\n var _$el$getBoundingClien = this.$el.getBoundingClientRect(),\n left = _$el$getBoundingClien.left;\n\n var startX = e.clientX - left;\n var _$el = this.$el,\n offsetWidth = _$el.offsetWidth,\n offsetHeight = _$el.offsetHeight;\n\n var top = activeNode.offsetTop;\n var bottom = top + activeNode.offsetHeight;\n\n hoverZone.innerHTML = '\\n \n * Based on Underscore.js 1.8.3 \n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n */\n\n/** Used as the size to enable large array optimizations. */\nvar LARGE_ARRAY_SIZE = 200;\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/** Used to compose bitmasks for comparison styles. */\nvar UNORDERED_COMPARE_FLAG = 1,\n PARTIAL_COMPARE_FLAG = 2;\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0,\n MAX_SAFE_INTEGER = 9007199254740991;\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n arrayTag = '[object Array]',\n boolTag = '[object Boolean]',\n dateTag = '[object Date]',\n errorTag = '[object Error]',\n funcTag = '[object Function]',\n genTag = '[object GeneratorFunction]',\n mapTag = '[object Map]',\n numberTag = '[object Number]',\n objectTag = '[object Object]',\n promiseTag = '[object Promise]',\n regexpTag = '[object RegExp]',\n setTag = '[object Set]',\n stringTag = '[object String]',\n symbolTag = '[object Symbol]',\n weakMapTag = '[object WeakMap]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n dataViewTag = '[object DataView]',\n float32Tag = '[object Float32Array]',\n float64Tag = '[object Float64Array]',\n int8Tag = '[object Int8Array]',\n int16Tag = '[object Int16Array]',\n int32Tag = '[object Int32Array]',\n uint8Tag = '[object Uint8Array]',\n uint8ClampedTag = '[object Uint8ClampedArray]',\n uint16Tag = '[object Uint16Array]',\n uint32Tag = '[object Uint32Array]';\n\n/** Used to match property names within property paths. */\nvar reIsDeepProp = /\\.|\\[(?:[^[\\]]*|([\"'])(?:(?!\\1)[^\\\\]|\\\\.)*?\\1)\\]/,\n reIsPlainProp = /^\\w*$/,\n reLeadingDot = /^\\./,\n rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]|(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|$))/g;\n\n/**\n * Used to match `RegExp`\n * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\n */\nvar reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g;\n\n/** Used to match backslashes in property paths. */\nvar reEscapeChar = /\\\\(\\\\)?/g;\n\n/** Used to detect host constructors (Safari). */\nvar reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n/** Used to detect unsigned integer values. */\nvar reIsUint = /^(?:0|[1-9]\\d*)$/;\n\n/** Used to identify `toStringTag` values of typed arrays. */\nvar typedArrayTags = {};\ntypedArrayTags[float32Tag] = typedArrayTags[float64Tag] =\ntypedArrayTags[int8Tag] = typedArrayTags[int16Tag] =\ntypedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =\ntypedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =\ntypedArrayTags[uint32Tag] = true;\ntypedArrayTags[argsTag] = typedArrayTags[arrayTag] =\ntypedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =\ntypedArrayTags[dataViewTag] = typedArrayTags[dateTag] =\ntypedArrayTags[errorTag] = typedArrayTags[funcTag] =\ntypedArrayTags[mapTag] = typedArrayTags[numberTag] =\ntypedArrayTags[objectTag] = typedArrayTags[regexpTag] =\ntypedArrayTags[setTag] = typedArrayTags[stringTag] =\ntypedArrayTags[weakMapTag] = false;\n\n/** Detect free variable `global` from Node.js. */\nvar freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\n/** Detect free variable `self`. */\nvar freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n/** Used as a reference to the global object. */\nvar root = freeGlobal || freeSelf || Function('return this')();\n\n/** Detect free variable `exports`. */\nvar freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\n\n/** Detect free variable `module`. */\nvar freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\n\n/** Detect the popular CommonJS extension `module.exports`. */\nvar moduleExports = freeModule && freeModule.exports === freeExports;\n\n/** Detect free variable `process` from Node.js. */\nvar freeProcess = moduleExports && freeGlobal.process;\n\n/** Used to access faster Node.js helpers. */\nvar nodeUtil = (function() {\n try {\n return freeProcess && freeProcess.binding('util');\n } catch (e) {}\n}());\n\n/* Node.js helper references. */\nvar nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;\n\n/**\n * A specialized version of `_.reduce` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the first element of `array` as\n * the initial value.\n * @returns {*} Returns the accumulated value.\n */\nfunction arrayReduce(array, iteratee, accumulator, initAccum) {\n var index = -1,\n length = array ? array.length : 0;\n\n if (initAccum && length) {\n accumulator = array[++index];\n }\n while (++index < length) {\n accumulator = iteratee(accumulator, array[index], index, array);\n }\n return accumulator;\n}\n\n/**\n * A specialized version of `_.some` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n */\nfunction arraySome(array, predicate) {\n var index = -1,\n length = array ? array.length : 0;\n\n while (++index < length) {\n if (predicate(array[index], index, array)) {\n return true;\n }\n }\n return false;\n}\n\n/**\n * The base implementation of `_.property` without support for deep paths.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\nfunction baseProperty(key) {\n return function(object) {\n return object == null ? undefined : object[key];\n };\n}\n\n/**\n * The base implementation of `_.reduce` and `_.reduceRight`, without support\n * for iteratee shorthands, which iterates over `collection` using `eachFunc`.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} accumulator The initial value.\n * @param {boolean} initAccum Specify using the first or last element of\n * `collection` as the initial value.\n * @param {Function} eachFunc The function to iterate over `collection`.\n * @returns {*} Returns the accumulated value.\n */\nfunction baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {\n eachFunc(collection, function(value, index, collection) {\n accumulator = initAccum\n ? (initAccum = false, value)\n : iteratee(accumulator, value, index, collection);\n });\n return accumulator;\n}\n\n/**\n * The base implementation of `_.times` without support for iteratee shorthands\n * or max array length checks.\n *\n * @private\n * @param {number} n The number of times to invoke `iteratee`.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the array of results.\n */\nfunction baseTimes(n, iteratee) {\n var index = -1,\n result = Array(n);\n\n while (++index < n) {\n result[index] = iteratee(index);\n }\n return result;\n}\n\n/**\n * The base implementation of `_.unary` without support for storing metadata.\n *\n * @private\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n */\nfunction baseUnary(func) {\n return function(value) {\n return func(value);\n };\n}\n\n/**\n * Gets the value at `key` of `object`.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {string} key The key of the property to get.\n * @returns {*} Returns the property value.\n */\nfunction getValue(object, key) {\n return object == null ? undefined : object[key];\n}\n\n/**\n * Checks if `value` is a host object in IE < 9.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a host object, else `false`.\n */\nfunction isHostObject(value) {\n // Many host objects are `Object` objects that can coerce to strings\n // despite having improperly defined `toString` methods.\n var result = false;\n if (value != null && typeof value.toString != 'function') {\n try {\n result = !!(value + '');\n } catch (e) {}\n }\n return result;\n}\n\n/**\n * Converts `map` to its key-value pairs.\n *\n * @private\n * @param {Object} map The map to convert.\n * @returns {Array} Returns the key-value pairs.\n */\nfunction mapToArray(map) {\n var index = -1,\n result = Array(map.size);\n\n map.forEach(function(value, key) {\n result[++index] = [key, value];\n });\n return result;\n}\n\n/**\n * Creates a unary function that invokes `func` with its argument transformed.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {Function} transform The argument transform.\n * @returns {Function} Returns the new function.\n */\nfunction overArg(func, transform) {\n return function(arg) {\n return func(transform(arg));\n };\n}\n\n/**\n * Converts `set` to an array of its values.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the values.\n */\nfunction setToArray(set) {\n var index = -1,\n result = Array(set.size);\n\n set.forEach(function(value) {\n result[++index] = value;\n });\n return result;\n}\n\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype,\n funcProto = Function.prototype,\n objectProto = Object.prototype;\n\n/** Used to detect overreaching core-js shims. */\nvar coreJsData = root['__core-js_shared__'];\n\n/** Used to detect methods masquerading as native. */\nvar maskSrcKey = (function() {\n var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\n return uid ? ('Symbol(src)_1.' + uid) : '';\n}());\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = funcProto.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/** Used to detect if a method is native. */\nvar reIsNative = RegExp('^' +\n funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\n .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\n);\n\n/** Built-in value references. */\nvar Symbol = root.Symbol,\n Uint8Array = root.Uint8Array,\n propertyIsEnumerable = objectProto.propertyIsEnumerable,\n splice = arrayProto.splice;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeKeys = overArg(Object.keys, Object);\n\n/* Built-in method references that are verified to be native. */\nvar DataView = getNative(root, 'DataView'),\n Map = getNative(root, 'Map'),\n Promise = getNative(root, 'Promise'),\n Set = getNative(root, 'Set'),\n WeakMap = getNative(root, 'WeakMap'),\n nativeCreate = getNative(Object, 'create');\n\n/** Used to detect maps, sets, and weakmaps. */\nvar dataViewCtorString = toSource(DataView),\n mapCtorString = toSource(Map),\n promiseCtorString = toSource(Promise),\n setCtorString = toSource(Set),\n weakMapCtorString = toSource(WeakMap);\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,\n symbolToString = symbolProto ? symbolProto.toString : undefined;\n\n/**\n * Creates a hash object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Hash(entries) {\n var index = -1,\n length = entries ? entries.length : 0;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n}\n\n/**\n * Removes all key-value entries from the hash.\n *\n * @private\n * @name clear\n * @memberOf Hash\n */\nfunction hashClear() {\n this.__data__ = nativeCreate ? nativeCreate(null) : {};\n}\n\n/**\n * Removes `key` and its value from the hash.\n *\n * @private\n * @name delete\n * @memberOf Hash\n * @param {Object} hash The hash to modify.\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction hashDelete(key) {\n return this.has(key) && delete this.__data__[key];\n}\n\n/**\n * Gets the hash value for `key`.\n *\n * @private\n * @name get\n * @memberOf Hash\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction hashGet(key) {\n var data = this.__data__;\n if (nativeCreate) {\n var result = data[key];\n return result === HASH_UNDEFINED ? undefined : result;\n }\n return hasOwnProperty.call(data, key) ? data[key] : undefined;\n}\n\n/**\n * Checks if a hash value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Hash\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction hashHas(key) {\n var data = this.__data__;\n return nativeCreate ? data[key] !== undefined : hasOwnProperty.call(data, key);\n}\n\n/**\n * Sets the hash `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Hash\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the hash instance.\n */\nfunction hashSet(key, value) {\n var data = this.__data__;\n data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;\n return this;\n}\n\n// Add methods to `Hash`.\nHash.prototype.clear = hashClear;\nHash.prototype['delete'] = hashDelete;\nHash.prototype.get = hashGet;\nHash.prototype.has = hashHas;\nHash.prototype.set = hashSet;\n\n/**\n * Creates an list cache object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction ListCache(entries) {\n var index = -1,\n length = entries ? entries.length : 0;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n}\n\n/**\n * Removes all key-value entries from the list cache.\n *\n * @private\n * @name clear\n * @memberOf ListCache\n */\nfunction listCacheClear() {\n this.__data__ = [];\n}\n\n/**\n * Removes `key` and its value from the list cache.\n *\n * @private\n * @name delete\n * @memberOf ListCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction listCacheDelete(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n return false;\n }\n var lastIndex = data.length - 1;\n if (index == lastIndex) {\n data.pop();\n } else {\n splice.call(data, index, 1);\n }\n return true;\n}\n\n/**\n * Gets the list cache value for `key`.\n *\n * @private\n * @name get\n * @memberOf ListCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction listCacheGet(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n return index < 0 ? undefined : data[index][1];\n}\n\n/**\n * Checks if a list cache value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf ListCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction listCacheHas(key) {\n return assocIndexOf(this.__data__, key) > -1;\n}\n\n/**\n * Sets the list cache `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf ListCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the list cache instance.\n */\nfunction listCacheSet(key, value) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n data.push([key, value]);\n } else {\n data[index][1] = value;\n }\n return this;\n}\n\n// Add methods to `ListCache`.\nListCache.prototype.clear = listCacheClear;\nListCache.prototype['delete'] = listCacheDelete;\nListCache.prototype.get = listCacheGet;\nListCache.prototype.has = listCacheHas;\nListCache.prototype.set = listCacheSet;\n\n/**\n * Creates a map cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction MapCache(entries) {\n var index = -1,\n length = entries ? entries.length : 0;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n}\n\n/**\n * Removes all key-value entries from the map.\n *\n * @private\n * @name clear\n * @memberOf MapCache\n */\nfunction mapCacheClear() {\n this.__data__ = {\n 'hash': new Hash,\n 'map': new (Map || ListCache),\n 'string': new Hash\n };\n}\n\n/**\n * Removes `key` and its value from the map.\n *\n * @private\n * @name delete\n * @memberOf MapCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction mapCacheDelete(key) {\n return getMapData(this, key)['delete'](key);\n}\n\n/**\n * Gets the map value for `key`.\n *\n * @private\n * @name get\n * @memberOf MapCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction mapCacheGet(key) {\n return getMapData(this, key).get(key);\n}\n\n/**\n * Checks if a map value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf MapCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction mapCacheHas(key) {\n return getMapData(this, key).has(key);\n}\n\n/**\n * Sets the map `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf MapCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the map cache instance.\n */\nfunction mapCacheSet(key, value) {\n getMapData(this, key).set(key, value);\n return this;\n}\n\n// Add methods to `MapCache`.\nMapCache.prototype.clear = mapCacheClear;\nMapCache.prototype['delete'] = mapCacheDelete;\nMapCache.prototype.get = mapCacheGet;\nMapCache.prototype.has = mapCacheHas;\nMapCache.prototype.set = mapCacheSet;\n\n/**\n *\n * Creates an array cache object to store unique values.\n *\n * @private\n * @constructor\n * @param {Array} [values] The values to cache.\n */\nfunction SetCache(values) {\n var index = -1,\n length = values ? values.length : 0;\n\n this.__data__ = new MapCache;\n while (++index < length) {\n this.add(values[index]);\n }\n}\n\n/**\n * Adds `value` to the array cache.\n *\n * @private\n * @name add\n * @memberOf SetCache\n * @alias push\n * @param {*} value The value to cache.\n * @returns {Object} Returns the cache instance.\n */\nfunction setCacheAdd(value) {\n this.__data__.set(value, HASH_UNDEFINED);\n return this;\n}\n\n/**\n * Checks if `value` is in the array cache.\n *\n * @private\n * @name has\n * @memberOf SetCache\n * @param {*} value The value to search for.\n * @returns {number} Returns `true` if `value` is found, else `false`.\n */\nfunction setCacheHas(value) {\n return this.__data__.has(value);\n}\n\n// Add methods to `SetCache`.\nSetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\nSetCache.prototype.has = setCacheHas;\n\n/**\n * Creates a stack cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Stack(entries) {\n this.__data__ = new ListCache(entries);\n}\n\n/**\n * Removes all key-value entries from the stack.\n *\n * @private\n * @name clear\n * @memberOf Stack\n */\nfunction stackClear() {\n this.__data__ = new ListCache;\n}\n\n/**\n * Removes `key` and its value from the stack.\n *\n * @private\n * @name delete\n * @memberOf Stack\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction stackDelete(key) {\n return this.__data__['delete'](key);\n}\n\n/**\n * Gets the stack value for `key`.\n *\n * @private\n * @name get\n * @memberOf Stack\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction stackGet(key) {\n return this.__data__.get(key);\n}\n\n/**\n * Checks if a stack value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Stack\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction stackHas(key) {\n return this.__data__.has(key);\n}\n\n/**\n * Sets the stack `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Stack\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the stack cache instance.\n */\nfunction stackSet(key, value) {\n var cache = this.__data__;\n if (cache instanceof ListCache) {\n var pairs = cache.__data__;\n if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {\n pairs.push([key, value]);\n return this;\n }\n cache = this.__data__ = new MapCache(pairs);\n }\n cache.set(key, value);\n return this;\n}\n\n// Add methods to `Stack`.\nStack.prototype.clear = stackClear;\nStack.prototype['delete'] = stackDelete;\nStack.prototype.get = stackGet;\nStack.prototype.has = stackHas;\nStack.prototype.set = stackSet;\n\n/**\n * Creates an array of the enumerable property names of the array-like `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @param {boolean} inherited Specify returning inherited property names.\n * @returns {Array} Returns the array of property names.\n */\nfunction arrayLikeKeys(value, inherited) {\n // Safari 8.1 makes `arguments.callee` enumerable in strict mode.\n // Safari 9 makes `arguments.length` enumerable in strict mode.\n var result = (isArray(value) || isArguments(value))\n ? baseTimes(value.length, String)\n : [];\n\n var length = result.length,\n skipIndexes = !!length;\n\n for (var key in value) {\n if ((inherited || hasOwnProperty.call(value, key)) &&\n !(skipIndexes && (key == 'length' || isIndex(key, length)))) {\n result.push(key);\n }\n }\n return result;\n}\n\n/**\n * Gets the index at which the `key` is found in `array` of key-value pairs.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} key The key to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction assocIndexOf(array, key) {\n var length = array.length;\n while (length--) {\n if (eq(array[length][0], key)) {\n return length;\n }\n }\n return -1;\n}\n\n/**\n * The base implementation of `_.forEach` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n */\nvar baseEach = createBaseEach(baseForOwn);\n\n/**\n * The base implementation of `baseForOwn` which iterates over `object`\n * properties returned by `keysFunc` and invokes `iteratee` for each property.\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @returns {Object} Returns `object`.\n */\nvar baseFor = createBaseFor();\n\n/**\n * The base implementation of `_.forOwn` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Object} Returns `object`.\n */\nfunction baseForOwn(object, iteratee) {\n return object && baseFor(object, iteratee, keys);\n}\n\n/**\n * The base implementation of `_.get` without support for default values.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @returns {*} Returns the resolved value.\n */\nfunction baseGet(object, path) {\n path = isKey(path, object) ? [path] : castPath(path);\n\n var index = 0,\n length = path.length;\n\n while (object != null && index < length) {\n object = object[toKey(path[index++])];\n }\n return (index && index == length) ? object : undefined;\n}\n\n/**\n * The base implementation of `getTag`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nfunction baseGetTag(value) {\n return objectToString.call(value);\n}\n\n/**\n * The base implementation of `_.hasIn` without support for deep paths.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\nfunction baseHasIn(object, key) {\n return object != null && key in Object(object);\n}\n\n/**\n * The base implementation of `_.isEqual` which supports partial comparisons\n * and tracks traversed objects.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {boolean} [bitmask] The bitmask of comparison flags.\n * The bitmask may be composed of the following flags:\n * 1 - Unordered comparison\n * 2 - Partial comparison\n * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n */\nfunction baseIsEqual(value, other, customizer, bitmask, stack) {\n if (value === other) {\n return true;\n }\n if (value == null || other == null || (!isObject(value) && !isObjectLike(other))) {\n return value !== value && other !== other;\n }\n return baseIsEqualDeep(value, other, baseIsEqual, customizer, bitmask, stack);\n}\n\n/**\n * A specialized version of `baseIsEqual` for arrays and objects which performs\n * deep comparisons and tracks traversed objects enabling objects with circular\n * references to be compared.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {number} [bitmask] The bitmask of comparison flags. See `baseIsEqual`\n * for more details.\n * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) {\n var objIsArr = isArray(object),\n othIsArr = isArray(other),\n objTag = arrayTag,\n othTag = arrayTag;\n\n if (!objIsArr) {\n objTag = getTag(object);\n objTag = objTag == argsTag ? objectTag : objTag;\n }\n if (!othIsArr) {\n othTag = getTag(other);\n othTag = othTag == argsTag ? objectTag : othTag;\n }\n var objIsObj = objTag == objectTag && !isHostObject(object),\n othIsObj = othTag == objectTag && !isHostObject(other),\n isSameTag = objTag == othTag;\n\n if (isSameTag && !objIsObj) {\n stack || (stack = new Stack);\n return (objIsArr || isTypedArray(object))\n ? equalArrays(object, other, equalFunc, customizer, bitmask, stack)\n : equalByTag(object, other, objTag, equalFunc, customizer, bitmask, stack);\n }\n if (!(bitmask & PARTIAL_COMPARE_FLAG)) {\n var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n if (objIsWrapped || othIsWrapped) {\n var objUnwrapped = objIsWrapped ? object.value() : object,\n othUnwrapped = othIsWrapped ? other.value() : other;\n\n stack || (stack = new Stack);\n return equalFunc(objUnwrapped, othUnwrapped, customizer, bitmask, stack);\n }\n }\n if (!isSameTag) {\n return false;\n }\n stack || (stack = new Stack);\n return equalObjects(object, other, equalFunc, customizer, bitmask, stack);\n}\n\n/**\n * The base implementation of `_.isMatch` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @param {Array} matchData The property names, values, and compare flags to match.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n */\nfunction baseIsMatch(object, source, matchData, customizer) {\n var index = matchData.length,\n length = index,\n noCustomizer = !customizer;\n\n if (object == null) {\n return !length;\n }\n object = Object(object);\n while (index--) {\n var data = matchData[index];\n if ((noCustomizer && data[2])\n ? data[1] !== object[data[0]]\n : !(data[0] in object)\n ) {\n return false;\n }\n }\n while (++index < length) {\n data = matchData[index];\n var key = data[0],\n objValue = object[key],\n srcValue = data[1];\n\n if (noCustomizer && data[2]) {\n if (objValue === undefined && !(key in object)) {\n return false;\n }\n } else {\n var stack = new Stack;\n if (customizer) {\n var result = customizer(objValue, srcValue, key, object, source, stack);\n }\n if (!(result === undefined\n ? baseIsEqual(srcValue, objValue, customizer, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG, stack)\n : result\n )) {\n return false;\n }\n }\n }\n return true;\n}\n\n/**\n * The base implementation of `_.isNative` without bad shim checks.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n * else `false`.\n */\nfunction baseIsNative(value) {\n if (!isObject(value) || isMasked(value)) {\n return false;\n }\n var pattern = (isFunction(value) || isHostObject(value)) ? reIsNative : reIsHostCtor;\n return pattern.test(toSource(value));\n}\n\n/**\n * The base implementation of `_.isTypedArray` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n */\nfunction baseIsTypedArray(value) {\n return isObjectLike(value) &&\n isLength(value.length) && !!typedArrayTags[objectToString.call(value)];\n}\n\n/**\n * The base implementation of `_.iteratee`.\n *\n * @private\n * @param {*} [value=_.identity] The value to convert to an iteratee.\n * @returns {Function} Returns the iteratee.\n */\nfunction baseIteratee(value) {\n // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.\n // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.\n if (typeof value == 'function') {\n return value;\n }\n if (value == null) {\n return identity;\n }\n if (typeof value == 'object') {\n return isArray(value)\n ? baseMatchesProperty(value[0], value[1])\n : baseMatches(value);\n }\n return property(value);\n}\n\n/**\n * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\nfunction baseKeys(object) {\n if (!isPrototype(object)) {\n return nativeKeys(object);\n }\n var result = [];\n for (var key in Object(object)) {\n if (hasOwnProperty.call(object, key) && key != 'constructor') {\n result.push(key);\n }\n }\n return result;\n}\n\n/**\n * The base implementation of `_.matches` which doesn't clone `source`.\n *\n * @private\n * @param {Object} source The object of property values to match.\n * @returns {Function} Returns the new spec function.\n */\nfunction baseMatches(source) {\n var matchData = getMatchData(source);\n if (matchData.length == 1 && matchData[0][2]) {\n return matchesStrictComparable(matchData[0][0], matchData[0][1]);\n }\n return function(object) {\n return object === source || baseIsMatch(object, source, matchData);\n };\n}\n\n/**\n * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.\n *\n * @private\n * @param {string} path The path of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\nfunction baseMatchesProperty(path, srcValue) {\n if (isKey(path) && isStrictComparable(srcValue)) {\n return matchesStrictComparable(toKey(path), srcValue);\n }\n return function(object) {\n var objValue = get(object, path);\n return (objValue === undefined && objValue === srcValue)\n ? hasIn(object, path)\n : baseIsEqual(srcValue, objValue, undefined, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG);\n };\n}\n\n/**\n * A specialized version of `baseProperty` which supports deep paths.\n *\n * @private\n * @param {Array|string} path The path of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\nfunction basePropertyDeep(path) {\n return function(object) {\n return baseGet(object, path);\n };\n}\n\n/**\n * The base implementation of `_.toString` which doesn't convert nullish\n * values to empty strings.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {string} Returns the string.\n */\nfunction baseToString(value) {\n // Exit early for strings to avoid a performance hit in some environments.\n if (typeof value == 'string') {\n return value;\n }\n if (isSymbol(value)) {\n return symbolToString ? symbolToString.call(value) : '';\n }\n var result = (value + '');\n return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n}\n\n/**\n * Casts `value` to a path array if it's not one.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Array} Returns the cast property path array.\n */\nfunction castPath(value) {\n return isArray(value) ? value : stringToPath(value);\n}\n\n/**\n * Creates a `baseEach` or `baseEachRight` function.\n *\n * @private\n * @param {Function} eachFunc The function to iterate over a collection.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new base function.\n */\nfunction createBaseEach(eachFunc, fromRight) {\n return function(collection, iteratee) {\n if (collection == null) {\n return collection;\n }\n if (!isArrayLike(collection)) {\n return eachFunc(collection, iteratee);\n }\n var length = collection.length,\n index = fromRight ? length : -1,\n iterable = Object(collection);\n\n while ((fromRight ? index-- : ++index < length)) {\n if (iteratee(iterable[index], index, iterable) === false) {\n break;\n }\n }\n return collection;\n };\n}\n\n/**\n * Creates a base function for methods like `_.forIn` and `_.forOwn`.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new base function.\n */\nfunction createBaseFor(fromRight) {\n return function(object, iteratee, keysFunc) {\n var index = -1,\n iterable = Object(object),\n props = keysFunc(object),\n length = props.length;\n\n while (length--) {\n var key = props[fromRight ? length : ++index];\n if (iteratee(iterable[key], key, iterable) === false) {\n break;\n }\n }\n return object;\n };\n}\n\n/**\n * A specialized version of `baseIsEqualDeep` for arrays with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Array} array The array to compare.\n * @param {Array} other The other array to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} customizer The function to customize comparisons.\n * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`\n * for more details.\n * @param {Object} stack Tracks traversed `array` and `other` objects.\n * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n */\nfunction equalArrays(array, other, equalFunc, customizer, bitmask, stack) {\n var isPartial = bitmask & PARTIAL_COMPARE_FLAG,\n arrLength = array.length,\n othLength = other.length;\n\n if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n return false;\n }\n // Assume cyclic values are equal.\n var stacked = stack.get(array);\n if (stacked && stack.get(other)) {\n return stacked == other;\n }\n var index = -1,\n result = true,\n seen = (bitmask & UNORDERED_COMPARE_FLAG) ? new SetCache : undefined;\n\n stack.set(array, other);\n stack.set(other, array);\n\n // Ignore non-index properties.\n while (++index < arrLength) {\n var arrValue = array[index],\n othValue = other[index];\n\n if (customizer) {\n var compared = isPartial\n ? customizer(othValue, arrValue, index, other, array, stack)\n : customizer(arrValue, othValue, index, array, other, stack);\n }\n if (compared !== undefined) {\n if (compared) {\n continue;\n }\n result = false;\n break;\n }\n // Recursively compare arrays (susceptible to call stack limits).\n if (seen) {\n if (!arraySome(other, function(othValue, othIndex) {\n if (!seen.has(othIndex) &&\n (arrValue === othValue || equalFunc(arrValue, othValue, customizer, bitmask, stack))) {\n return seen.add(othIndex);\n }\n })) {\n result = false;\n break;\n }\n } else if (!(\n arrValue === othValue ||\n equalFunc(arrValue, othValue, customizer, bitmask, stack)\n )) {\n result = false;\n break;\n }\n }\n stack['delete'](array);\n stack['delete'](other);\n return result;\n}\n\n/**\n * A specialized version of `baseIsEqualDeep` for comparing objects of\n * the same `toStringTag`.\n *\n * **Note:** This function only supports comparing values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {string} tag The `toStringTag` of the objects to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} customizer The function to customize comparisons.\n * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`\n * for more details.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction equalByTag(object, other, tag, equalFunc, customizer, bitmask, stack) {\n switch (tag) {\n case dataViewTag:\n if ((object.byteLength != other.byteLength) ||\n (object.byteOffset != other.byteOffset)) {\n return false;\n }\n object = object.buffer;\n other = other.buffer;\n\n case arrayBufferTag:\n if ((object.byteLength != other.byteLength) ||\n !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\n return false;\n }\n return true;\n\n case boolTag:\n case dateTag:\n case numberTag:\n // Coerce booleans to `1` or `0` and dates to milliseconds.\n // Invalid dates are coerced to `NaN`.\n return eq(+object, +other);\n\n case errorTag:\n return object.name == other.name && object.message == other.message;\n\n case regexpTag:\n case stringTag:\n // Coerce regexes to strings and treat strings, primitives and objects,\n // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring\n // for more details.\n return object == (other + '');\n\n case mapTag:\n var convert = mapToArray;\n\n case setTag:\n var isPartial = bitmask & PARTIAL_COMPARE_FLAG;\n convert || (convert = setToArray);\n\n if (object.size != other.size && !isPartial) {\n return false;\n }\n // Assume cyclic values are equal.\n var stacked = stack.get(object);\n if (stacked) {\n return stacked == other;\n }\n bitmask |= UNORDERED_COMPARE_FLAG;\n\n // Recursively compare objects (susceptible to call stack limits).\n stack.set(object, other);\n var result = equalArrays(convert(object), convert(other), equalFunc, customizer, bitmask, stack);\n stack['delete'](object);\n return result;\n\n case symbolTag:\n if (symbolValueOf) {\n return symbolValueOf.call(object) == symbolValueOf.call(other);\n }\n }\n return false;\n}\n\n/**\n * A specialized version of `baseIsEqualDeep` for objects with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Function} customizer The function to customize comparisons.\n * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`\n * for more details.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction equalObjects(object, other, equalFunc, customizer, bitmask, stack) {\n var isPartial = bitmask & PARTIAL_COMPARE_FLAG,\n objProps = keys(object),\n objLength = objProps.length,\n othProps = keys(other),\n othLength = othProps.length;\n\n if (objLength != othLength && !isPartial) {\n return false;\n }\n var index = objLength;\n while (index--) {\n var key = objProps[index];\n if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {\n return false;\n }\n }\n // Assume cyclic values are equal.\n var stacked = stack.get(object);\n if (stacked && stack.get(other)) {\n return stacked == other;\n }\n var result = true;\n stack.set(object, other);\n stack.set(other, object);\n\n var skipCtor = isPartial;\n while (++index < objLength) {\n key = objProps[index];\n var objValue = object[key],\n othValue = other[key];\n\n if (customizer) {\n var compared = isPartial\n ? customizer(othValue, objValue, key, other, object, stack)\n : customizer(objValue, othValue, key, object, other, stack);\n }\n // Recursively compare objects (susceptible to call stack limits).\n if (!(compared === undefined\n ? (objValue === othValue || equalFunc(objValue, othValue, customizer, bitmask, stack))\n : compared\n )) {\n result = false;\n break;\n }\n skipCtor || (skipCtor = key == 'constructor');\n }\n if (result && !skipCtor) {\n var objCtor = object.constructor,\n othCtor = other.constructor;\n\n // Non `Object` object instances with different constructors are not equal.\n if (objCtor != othCtor &&\n ('constructor' in object && 'constructor' in other) &&\n !(typeof objCtor == 'function' && objCtor instanceof objCtor &&\n typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n result = false;\n }\n }\n stack['delete'](object);\n stack['delete'](other);\n return result;\n}\n\n/**\n * Gets the data for `map`.\n *\n * @private\n * @param {Object} map The map to query.\n * @param {string} key The reference key.\n * @returns {*} Returns the map data.\n */\nfunction getMapData(map, key) {\n var data = map.__data__;\n return isKeyable(key)\n ? data[typeof key == 'string' ? 'string' : 'hash']\n : data.map;\n}\n\n/**\n * Gets the property names, values, and compare flags of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the match data of `object`.\n */\nfunction getMatchData(object) {\n var result = keys(object),\n length = result.length;\n\n while (length--) {\n var key = result[length],\n value = object[key];\n\n result[length] = [key, value, isStrictComparable(value)];\n }\n return result;\n}\n\n/**\n * Gets the native function at `key` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the method to get.\n * @returns {*} Returns the function if it's native, else `undefined`.\n */\nfunction getNative(object, key) {\n var value = getValue(object, key);\n return baseIsNative(value) ? value : undefined;\n}\n\n/**\n * Gets the `toStringTag` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nvar getTag = baseGetTag;\n\n// Fallback for data views, maps, sets, and weak maps in IE 11,\n// for data views in Edge < 14, and promises in Node.js.\nif ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\n (Map && getTag(new Map) != mapTag) ||\n (Promise && getTag(Promise.resolve()) != promiseTag) ||\n (Set && getTag(new Set) != setTag) ||\n (WeakMap && getTag(new WeakMap) != weakMapTag)) {\n getTag = function(value) {\n var result = objectToString.call(value),\n Ctor = result == objectTag ? value.constructor : undefined,\n ctorString = Ctor ? toSource(Ctor) : undefined;\n\n if (ctorString) {\n switch (ctorString) {\n case dataViewCtorString: return dataViewTag;\n case mapCtorString: return mapTag;\n case promiseCtorString: return promiseTag;\n case setCtorString: return setTag;\n case weakMapCtorString: return weakMapTag;\n }\n }\n return result;\n };\n}\n\n/**\n * Checks if `path` exists on `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @param {Function} hasFunc The function to check properties.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n */\nfunction hasPath(object, path, hasFunc) {\n path = isKey(path, object) ? [path] : castPath(path);\n\n var result,\n index = -1,\n length = path.length;\n\n while (++index < length) {\n var key = toKey(path[index]);\n if (!(result = object != null && hasFunc(object, key))) {\n break;\n }\n object = object[key];\n }\n if (result) {\n return result;\n }\n var length = object ? object.length : 0;\n return !!length && isLength(length) && isIndex(key, length) &&\n (isArray(object) || isArguments(object));\n}\n\n/**\n * Checks if `value` is a valid array-like index.\n *\n * @private\n * @param {*} value The value to check.\n * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n */\nfunction isIndex(value, length) {\n length = length == null ? MAX_SAFE_INTEGER : length;\n return !!length &&\n (typeof value == 'number' || reIsUint.test(value)) &&\n (value > -1 && value % 1 == 0 && value < length);\n}\n\n/**\n * Checks if `value` is a property name and not a property path.\n *\n * @private\n * @param {*} value The value to check.\n * @param {Object} [object] The object to query keys on.\n * @returns {boolean} Returns `true` if `value` is a property name, else `false`.\n */\nfunction isKey(value, object) {\n if (isArray(value)) {\n return false;\n }\n var type = typeof value;\n if (type == 'number' || type == 'symbol' || type == 'boolean' ||\n value == null || isSymbol(value)) {\n return true;\n }\n return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||\n (object != null && value in Object(object));\n}\n\n/**\n * Checks if `value` is suitable for use as unique object key.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n */\nfunction isKeyable(value) {\n var type = typeof value;\n return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\n ? (value !== '__proto__')\n : (value === null);\n}\n\n/**\n * Checks if `func` has its source masked.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` is masked, else `false`.\n */\nfunction isMasked(func) {\n return !!maskSrcKey && (maskSrcKey in func);\n}\n\n/**\n * Checks if `value` is likely a prototype object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n */\nfunction isPrototype(value) {\n var Ctor = value && value.constructor,\n proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\n\n return value === proto;\n}\n\n/**\n * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` if suitable for strict\n * equality comparisons, else `false`.\n */\nfunction isStrictComparable(value) {\n return value === value && !isObject(value);\n}\n\n/**\n * A specialized version of `matchesProperty` for source values suitable\n * for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\nfunction matchesStrictComparable(key, srcValue) {\n return function(object) {\n if (object == null) {\n return false;\n }\n return object[key] === srcValue &&\n (srcValue !== undefined || (key in Object(object)));\n };\n}\n\n/**\n * Converts `string` to a property path array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the property path array.\n */\nvar stringToPath = memoize(function(string) {\n string = toString(string);\n\n var result = [];\n if (reLeadingDot.test(string)) {\n result.push('');\n }\n string.replace(rePropName, function(match, number, quote, string) {\n result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match));\n });\n return result;\n});\n\n/**\n * Converts `value` to a string key if it's not a string or symbol.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {string|symbol} Returns the key.\n */\nfunction toKey(value) {\n if (typeof value == 'string' || isSymbol(value)) {\n return value;\n }\n var result = (value + '');\n return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n}\n\n/**\n * Converts `func` to its source code.\n *\n * @private\n * @param {Function} func The function to process.\n * @returns {string} Returns the source code.\n */\nfunction toSource(func) {\n if (func != null) {\n try {\n return funcToString.call(func);\n } catch (e) {}\n try {\n return (func + '');\n } catch (e) {}\n }\n return '';\n}\n\n/**\n * Reduces `collection` to a value which is the accumulated result of running\n * each element in `collection` thru `iteratee`, where each successive\n * invocation is supplied the return value of the previous. If `accumulator`\n * is not given, the first element of `collection` is used as the initial\n * value. The iteratee is invoked with four arguments:\n * (accumulator, value, index|key, collection).\n *\n * Many lodash methods are guarded to work as iteratees for methods like\n * `_.reduce`, `_.reduceRight`, and `_.transform`.\n *\n * The guarded methods are:\n * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,\n * and `sortBy`\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @returns {*} Returns the accumulated value.\n * @see _.reduceRight\n * @example\n *\n * _.reduce([1, 2], function(sum, n) {\n * return sum + n;\n * }, 0);\n * // => 3\n *\n * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n * (result[value] || (result[value] = [])).push(key);\n * return result;\n * }, {});\n * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)\n */\nfunction reduce(collection, iteratee, accumulator) {\n var func = isArray(collection) ? arrayReduce : baseReduce,\n initAccum = arguments.length < 3;\n\n return func(collection, baseIteratee(iteratee, 4), accumulator, initAccum, baseEach);\n}\n\n/**\n * Creates a function that memoizes the result of `func`. If `resolver` is\n * provided, it determines the cache key for storing the result based on the\n * arguments provided to the memoized function. By default, the first argument\n * provided to the memoized function is used as the map cache key. The `func`\n * is invoked with the `this` binding of the memoized function.\n *\n * **Note:** The cache is exposed as the `cache` property on the memoized\n * function. Its creation may be customized by replacing the `_.memoize.Cache`\n * constructor with one whose instances implement the\n * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)\n * method interface of `delete`, `get`, `has`, and `set`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to have its output memoized.\n * @param {Function} [resolver] The function to resolve the cache key.\n * @returns {Function} Returns the new memoized function.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n * var other = { 'c': 3, 'd': 4 };\n *\n * var values = _.memoize(_.values);\n * values(object);\n * // => [1, 2]\n *\n * values(other);\n * // => [3, 4]\n *\n * object.a = 2;\n * values(object);\n * // => [1, 2]\n *\n * // Modify the result cache.\n * values.cache.set(object, ['a', 'b']);\n * values(object);\n * // => ['a', 'b']\n *\n * // Replace `_.memoize.Cache`.\n * _.memoize.Cache = WeakMap;\n */\nfunction memoize(func, resolver) {\n if (typeof func != 'function' || (resolver && typeof resolver != 'function')) {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n var memoized = function() {\n var args = arguments,\n key = resolver ? resolver.apply(this, args) : args[0],\n cache = memoized.cache;\n\n if (cache.has(key)) {\n return cache.get(key);\n }\n var result = func.apply(this, args);\n memoized.cache = cache.set(key, result);\n return result;\n };\n memoized.cache = new (memoize.Cache || MapCache);\n return memoized;\n}\n\n// Assign cache to `_.memoize`.\nmemoize.Cache = MapCache;\n\n/**\n * Performs a\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * comparison between two values to determine if they are equivalent.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.eq(object, object);\n * // => true\n *\n * _.eq(object, other);\n * // => false\n *\n * _.eq('a', 'a');\n * // => true\n *\n * _.eq('a', Object('a'));\n * // => false\n *\n * _.eq(NaN, NaN);\n * // => true\n */\nfunction eq(value, other) {\n return value === other || (value !== value && other !== other);\n}\n\n/**\n * Checks if `value` is likely an `arguments` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n * else `false`.\n * @example\n *\n * _.isArguments(function() { return arguments; }());\n * // => true\n *\n * _.isArguments([1, 2, 3]);\n * // => false\n */\nfunction isArguments(value) {\n // Safari 8.1 makes `arguments.callee` enumerable in strict mode.\n return isArrayLikeObject(value) && hasOwnProperty.call(value, 'callee') &&\n (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag);\n}\n\n/**\n * Checks if `value` is classified as an `Array` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array, else `false`.\n * @example\n *\n * _.isArray([1, 2, 3]);\n * // => true\n *\n * _.isArray(document.body.children);\n * // => false\n *\n * _.isArray('abc');\n * // => false\n *\n * _.isArray(_.noop);\n * // => false\n */\nvar isArray = Array.isArray;\n\n/**\n * Checks if `value` is array-like. A value is considered array-like if it's\n * not a function and has a `value.length` that's an integer greater than or\n * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n * @example\n *\n * _.isArrayLike([1, 2, 3]);\n * // => true\n *\n * _.isArrayLike(document.body.children);\n * // => true\n *\n * _.isArrayLike('abc');\n * // => true\n *\n * _.isArrayLike(_.noop);\n * // => false\n */\nfunction isArrayLike(value) {\n return value != null && isLength(value.length) && !isFunction(value);\n}\n\n/**\n * This method is like `_.isArrayLike` except that it also checks if `value`\n * is an object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array-like object,\n * else `false`.\n * @example\n *\n * _.isArrayLikeObject([1, 2, 3]);\n * // => true\n *\n * _.isArrayLikeObject(document.body.children);\n * // => true\n *\n * _.isArrayLikeObject('abc');\n * // => false\n *\n * _.isArrayLikeObject(_.noop);\n * // => false\n */\nfunction isArrayLikeObject(value) {\n return isObjectLike(value) && isArrayLike(value);\n}\n\n/**\n * Checks if `value` is classified as a `Function` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a function, else `false`.\n * @example\n *\n * _.isFunction(_);\n * // => true\n *\n * _.isFunction(/abc/);\n * // => false\n */\nfunction isFunction(value) {\n // The use of `Object#toString` avoids issues with the `typeof` operator\n // in Safari 8-9 which returns 'object' for typed array and other constructors.\n var tag = isObject(value) ? objectToString.call(value) : '';\n return tag == funcTag || tag == genTag;\n}\n\n/**\n * Checks if `value` is a valid array-like length.\n *\n * **Note:** This method is loosely based on\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.\n * @example\n *\n * _.isLength(3);\n * // => true\n *\n * _.isLength(Number.MIN_VALUE);\n * // => false\n *\n * _.isLength(Infinity);\n * // => false\n *\n * _.isLength('3');\n * // => false\n */\nfunction isLength(value) {\n return typeof value == 'number' &&\n value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n}\n\n/**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\nfunction isObject(value) {\n var type = typeof value;\n return !!value && (type == 'object' || type == 'function');\n}\n\n/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n return !!value && typeof value == 'object';\n}\n\n/**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\nfunction isSymbol(value) {\n return typeof value == 'symbol' ||\n (isObjectLike(value) && objectToString.call(value) == symbolTag);\n}\n\n/**\n * Checks if `value` is classified as a typed array.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n * @example\n *\n * _.isTypedArray(new Uint8Array);\n * // => true\n *\n * _.isTypedArray([]);\n * // => false\n */\nvar isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\n\n/**\n * Converts `value` to a string. An empty string is returned for `null`\n * and `undefined` values. The sign of `-0` is preserved.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {string} Returns the string.\n * @example\n *\n * _.toString(null);\n * // => ''\n *\n * _.toString(-0);\n * // => '-0'\n *\n * _.toString([1, 2, 3]);\n * // => '1,2,3'\n */\nfunction toString(value) {\n return value == null ? '' : baseToString(value);\n}\n\n/**\n * Gets the value at `path` of `object`. If the resolved value is\n * `undefined`, the `defaultValue` is returned in its place.\n *\n * @static\n * @memberOf _\n * @since 3.7.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n * @returns {*} Returns the resolved value.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.get(object, 'a[0].b.c');\n * // => 3\n *\n * _.get(object, ['a', '0', 'b', 'c']);\n * // => 3\n *\n * _.get(object, 'a.b.c', 'default');\n * // => 'default'\n */\nfunction get(object, path, defaultValue) {\n var result = object == null ? undefined : baseGet(object, path);\n return result === undefined ? defaultValue : result;\n}\n\n/**\n * Checks if `path` is a direct or inherited property of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.hasIn(object, 'a');\n * // => true\n *\n * _.hasIn(object, 'a.b');\n * // => true\n *\n * _.hasIn(object, ['a', 'b']);\n * // => true\n *\n * _.hasIn(object, 'b');\n * // => false\n */\nfunction hasIn(object, path) {\n return object != null && hasPath(object, path, baseHasIn);\n}\n\n/**\n * Creates an array of the own enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects. See the\n * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * for more details.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keys(new Foo);\n * // => ['a', 'b'] (iteration order is not guaranteed)\n *\n * _.keys('hi');\n * // => ['0', '1']\n */\nfunction keys(object) {\n return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\n}\n\n/**\n * This method returns the first argument it receives.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Util\n * @param {*} value Any value.\n * @returns {*} Returns `value`.\n * @example\n *\n * var object = { 'a': 1 };\n *\n * console.log(_.identity(object) === object);\n * // => true\n */\nfunction identity(value) {\n return value;\n}\n\n/**\n * Creates a function that returns the value at `path` of a given object.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Util\n * @param {Array|string} path The path of the property to get.\n * @returns {Function} Returns the new accessor function.\n * @example\n *\n * var objects = [\n * { 'a': { 'b': 2 } },\n * { 'a': { 'b': 1 } }\n * ];\n *\n * _.map(objects, _.property('a.b'));\n * // => [2, 1]\n *\n * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');\n * // => [1, 2]\n */\nfunction property(path) {\n return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);\n}\n\nmodule.exports = reduce;\n","'use strict';\n\nexports.__esModule = true;\nexports.i18n = exports.use = exports.t = undefined;\n\nvar _zhCN = require('element-ui/lib/locale/lang/zh-CN');\n\nvar _zhCN2 = _interopRequireDefault(_zhCN);\n\nvar _vue = require('vue');\n\nvar _vue2 = _interopRequireDefault(_vue);\n\nvar _deepmerge = require('deepmerge');\n\nvar _deepmerge2 = _interopRequireDefault(_deepmerge);\n\nvar _format = require('./format');\n\nvar _format2 = _interopRequireDefault(_format);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nvar format = (0, _format2.default)(_vue2.default);\nvar lang = _zhCN2.default;\nvar merged = false;\nvar i18nHandler = function i18nHandler() {\n var vuei18n = Object.getPrototypeOf(this || _vue2.default).$t;\n if (typeof vuei18n === 'function' && !!_vue2.default.locale) {\n if (!merged) {\n merged = true;\n _vue2.default.locale(_vue2.default.config.lang, (0, _deepmerge2.default)(lang, _vue2.default.locale(_vue2.default.config.lang) || {}, { clone: true }));\n }\n return vuei18n.apply(this, arguments);\n }\n};\n\nvar t = exports.t = function t(path, options) {\n var value = i18nHandler.apply(this, arguments);\n if (value !== null && value !== undefined) return value;\n\n var array = path.split('.');\n var current = lang;\n\n for (var i = 0, j = array.length; i < j; i++) {\n var property = array[i];\n value = current[property];\n if (i === j - 1) return format(value, options);\n if (!value) return '';\n current = value;\n }\n return '';\n};\n\nvar use = exports.use = function use(l) {\n lang = l || lang;\n};\n\nvar i18n = exports.i18n = function i18n(fn) {\n i18nHandler = fn || i18nHandler;\n};\n\nexports.default = { use: use, t: t, i18n: i18n };","'use strict';\n\nvar utils = require('./utils');\n\nmodule.exports = function makeJuiceClient(juiceClient) {\n\njuiceClient.ignoredPseudos = ['hover', 'active', 'focus', 'visited', 'link'];\njuiceClient.widthElements = ['TABLE', 'TD', 'TH', 'IMG'];\njuiceClient.heightElements = ['TABLE', 'TD', 'TH', 'IMG'];\njuiceClient.tableElements = ['TABLE', 'TH', 'TR', 'TD', 'CAPTION', 'COLGROUP', 'COL', 'THEAD', 'TBODY', 'TFOOT'];\njuiceClient.nonVisualElements = [ 'HEAD', 'TITLE', 'BASE', 'LINK', 'STYLE', 'META', 'SCRIPT', 'NOSCRIPT' ];\njuiceClient.styleToAttribute = {\n 'background-color': 'bgcolor',\n 'background-image': 'background',\n 'text-align': 'align',\n 'vertical-align': 'valign'\n};\njuiceClient.excludedProperties = [];\n\njuiceClient.juiceDocument = juiceDocument;\njuiceClient.inlineDocument = inlineDocument;\n\nfunction inlineDocument($, css, options) {\n\n options = options || {};\n var rules = utils.parseCSS(css);\n var editedElements = [];\n var styleAttributeName = 'style';\n\n if (options.styleAttributeName) {\n styleAttributeName = options.styleAttributeName;\n }\n\n rules.forEach(handleRule);\n editedElements.forEach(setStyleAttrs);\n\n if (options.inlinePseudoElements) {\n editedElements.forEach(inlinePseudoElements);\n }\n\n if (options.applyWidthAttributes) {\n editedElements.forEach(function(el) {\n setDimensionAttrs(el, 'width');\n });\n }\n\n if (options.applyHeightAttributes) {\n editedElements.forEach(function(el) {\n setDimensionAttrs(el, 'height');\n });\n }\n\n if (options.applyAttributesTableElements) {\n editedElements.forEach(setAttributesOnTableElements);\n }\n\n if (options.insertPreservedExtraCss && options.extraCss) {\n var preservedText = utils.getPreservedText(options.extraCss, {\n mediaQueries: options.preserveMediaQueries,\n fontFaces: options.preserveFontFaces,\n keyFrames: options.preserveKeyFrames\n });\n if (preservedText) {\n var $appendTo = null;\n if (options.insertPreservedExtraCss !== true) {\n $appendTo = $(options.insertPreservedExtraCss);\n } else {\n $appendTo = $('head');\n if (!$appendTo.length) { $appendTo = $('body'); }\n if (!$appendTo.length) { $appendTo = $.root(); }\n }\n\n $appendTo.first().append('');\n }\n }\n\n function handleRule(rule) {\n var sel = rule[0];\n var style = rule[1];\n var selector = new utils.Selector(sel);\n var parsedSelector = selector.parsed();\n var pseudoElementType = getPseudoElementType(parsedSelector);\n\n // skip rule if the selector has any pseudos which are ignored\n for (var i = 0; i < parsedSelector.length; ++i) {\n var subSel = parsedSelector[i];\n if (subSel.pseudos) {\n for (var j = 0; j < subSel.pseudos.length; ++j) {\n var subSelPseudo = subSel.pseudos[j];\n if (juiceClient.ignoredPseudos.indexOf(subSelPseudo.name) >= 0) {\n return;\n }\n }\n }\n }\n\n if (pseudoElementType) {\n var last = parsedSelector[parsedSelector.length - 1];\n var pseudos = last.pseudos;\n last.pseudos = filterElementPseudos(last.pseudos);\n sel = parsedSelector.toString();\n last.pseudos = pseudos;\n }\n\n var els;\n try {\n els = $(sel);\n } catch (err) {\n // skip invalid selector\n return;\n }\n\n els.each(function() {\n var el = this;\n\n if (el.name && juiceClient.nonVisualElements.indexOf(el.name.toUpperCase()) >= 0) {\n return;\n }\n\n if (pseudoElementType) {\n var pseudoElPropName = 'pseudo' + pseudoElementType;\n var pseudoEl = el[pseudoElPropName];\n if (!pseudoEl) {\n pseudoEl = el[pseudoElPropName] = $('').get(0);\n pseudoEl.pseudoElementType = pseudoElementType;\n pseudoEl.pseudoElementParent = el;\n el[pseudoElPropName] = pseudoEl;\n }\n el = pseudoEl;\n }\n\n if (!el.styleProps) {\n el.styleProps = {};\n\n // if the element has inline styles, fake selector with topmost specificity\n if ($(el).attr(styleAttributeName)) {\n var cssText = '* { ' + $(el).attr(styleAttributeName) + ' } ';\n addProps(utils.parseCSS(cssText)[0][1], new utils.Selector('