From 0b521d357c4f5c6b6781ac2860ae17ff26524a83 Mon Sep 17 00:00:00 2001
From: StEve Young <2747745470@qq.com>
Date: Thu, 21 Nov 2019 14:44:30 +0800
Subject: [PATCH] perf: close #16, use v-html to render code at runtime in
 DemoAndCode.vue (#18)

---
 babel.config.js                             |  2 +-
 docs/.vuepress/config.js                    |  4 +-
 jest.config.js                              |  2 +-
 package.json                                | 20 ++++-----
 src/DemoAndCode.vue                         | 41 ++++++++----------
 src/constants.js                            |  2 +-
 src/highlight.js                            | 46 +++++++++++----------
 src/index.js                                | 10 +----
 test/__snapshots__/DemoAndCode.test.js.snap | 13 +++++-
 test/utils.test.js                          | 10 ++---
 10 files changed, 77 insertions(+), 73 deletions(-)

diff --git a/babel.config.js b/babel.config.js
index f221db9..d234ef3 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -4,7 +4,7 @@ module.exports = {
             presets: [
                 [
                     '@babel/preset-env',
-                    { targets: { 'node': 'current' } },
+                    { targets: { node: 'current' } },
                 ],
             ],
         },
diff --git a/docs/.vuepress/config.js b/docs/.vuepress/config.js
index 6fb7452..e4b26e1 100644
--- a/docs/.vuepress/config.js
+++ b/docs/.vuepress/config.js
@@ -16,8 +16,8 @@ module.exports = {
         },
     },
     head: [
-        ['link', { rel: 'icon', href: `/favicon.ico` }],
-        ['link', { rel: 'stylesheet', href: `https://unpkg.com/animate.css@3.7.0/animate.min.css` }],
+        ['link', { rel: 'icon', href: '/favicon.ico' }],
+        ['link', { rel: 'stylesheet', href: 'https://unpkg.com/animate.css@3.7.0/animate.min.css' }],
     ],
     plugins: [
         ['smooth-scroll'],
diff --git a/jest.config.js b/jest.config.js
index ba2834f..563b5dc 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -8,7 +8,7 @@ module.exports = {
         '!src/highlight.js',
         '!src/enhanceAppFile.js',
     ],
-    coveragePathIgnorePatterns: [ '/__snapshots__/' ],
+    coveragePathIgnorePatterns: ['/__snapshots__/'],
     transform: {
         '^.+\\.vue$': 'vue-jest',
         '^.+\\.jsx?$': 'babel-jest',
diff --git a/package.json b/package.json
index 3b8fd32..a77b717 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "vuepress-plugin-demo-code",
-    "version": "0.3.7",
+    "version": "0.4.0",
     "description": "📝 Demo and code plugin for vuepress",
     "main": "src/index.js",
     "files": [
@@ -37,35 +37,35 @@
         "prismjs": "^1.17.1"
     },
     "devDependencies": {
-        "@babel/core": "^7.6.4",
-        "@babel/preset-env": "^7.6.3",
+        "@babel/core": "^7.7.2",
+        "@babel/preset-env": "^7.7.1",
         "@commitlint/cli": "^8.2.0",
         "@commitlint/config-conventional": "^8.2.0",
         "@vue/test-utils": "^1.0.0-beta.29",
-        "all-contributors-cli": "^6.9.1",
+        "all-contributors-cli": "^6.11.0",
         "babel-core": "^7.0.0-bridge.0",
         "babel-eslint": "^10.0.3",
         "codecov": "^3.6.1",
         "cross-env": "^6.0.3",
-        "eslint": "^6.5.1",
+        "eslint": "^6.6.0",
         "eslint-config-standard": "^14.1.0",
         "eslint-config-vue": "^2.0.2",
         "eslint-plugin-import": "^2.18.2",
         "eslint-plugin-node": "^10.0.0",
         "eslint-plugin-promise": "^4.2.1",
         "eslint-plugin-standard": "^4.0.1",
-        "eslint-plugin-vue": "^5.2.3",
+        "eslint-plugin-vue": "^6.0.1",
         "gh-pages": "^2.1.1",
-        "husky": "^3.0.8",
+        "husky": "^3.1.0",
         "jest": "^24.9.0",
         "jest-serializer-vue": "^2.0.2",
         "jest-transform-stub": "^2.0.0",
-        "lint-staged": "^9.4.2",
+        "lint-staged": "^9.4.3",
         "markdown-it-include": "^1.1.0",
         "rimraf": "^3.0.0",
         "vue-jest": "^3.0.5",
-        "vuepress": "^1.1.0",
-        "vuepress-plugin-smooth-scroll": "^0.0.4"
+        "vuepress": "^1.2.0",
+        "vuepress-plugin-smooth-scroll": "^0.0.7"
     },
     "keywords": [
         "vue",
diff --git a/src/DemoAndCode.vue b/src/DemoAndCode.vue
index 0a497e8..34443ec 100644
--- a/src/DemoAndCode.vue
+++ b/src/DemoAndCode.vue
@@ -25,13 +25,17 @@
         </div>
 
         <div class="code-wrapper" ref="codeWrapper" :style="codeWrapperStyle">
-            <slot name="code" />
+            <div
+                v-html="highlightCode"
+                :class="`language-${language}' extra-class`"
+            />
         </div>
     </section>
 </template>
 
 <script>
 import OnlineEdit from './OnlineEdit.vue'
+import getHighlightCodeHtml from './highlight'
 import {
     JS_RE,
     CSS_RE,
@@ -50,6 +54,7 @@ export default {
     },
     props: {
         htmlStr: { type: String, default: '' },
+        language: { type: String, default: 'vue' },
         showText: { type: String, default: 'show code' },
         hideText: { type: String, default: 'hide code' },
         jsLibsStr: { type: String, default: '[]' },
@@ -74,37 +79,28 @@ export default {
         }
     },
     computed: {
+        // button text
+        controlText: (vm) => vm.isShowCode ? vm.hideText : vm.showText,
+        highlightCode: vm => getHighlightCodeHtml(vm.decodedHtmlStr, vm.language),
+        decodedHtmlStr: vm => decodeURIComponent(vm.htmlStr),
+        showOnlineBtns: vm => parseAndDecode(vm.onlineBtnsStr),
         // icon animation
         iconStyle: (vm) => ({
-            transform: vm.isShowCode
-                ? 'rotate(0)'
-                : 'rotate(-180deg)',
+            transform: vm.isShowCode ? 'rotate(0)' : 'rotate(-180deg)',
         }),
-        // button text
-        controlText: (vm) => vm.isShowCode
-            ? vm.hideText
-            : vm.showText,
         // animation
         codeWrapperStyle: (vm) => ({
-            'max-height': vm.isShowCode
-                ? `${vm.codeHeight}px`
-                : `${vm.minHeight}px`,
+            'max-height': vm.isShowCode ? `${vm.codeHeight}px` : `${vm.minHeight}px`,
         }),
         // sticky
         codeControlStyle: (vm) => ({
-            top: vm.isShowCode
-                ? `${vm.navbarHeight}px`
-                : '0',
-            cursor: vm.isShowControl
-                ? 'pointer'
-                : 'auto',
+            top: vm.isShowCode ? `${vm.navbarHeight}px` : '0',
+            cursor: vm.isShowControl ? 'pointer' : 'auto',
         }),
         parsedCode: (vm) => {
-            const source = decodeURIComponent(vm.htmlStr)
-
-            const js = getMatchedResult(JS_RE)(source) || ''
-            const css = getMatchedResult(CSS_RE)(source) || ''
-            const html = getMatchedResult(HTML_RE)(source) || source
+            const js = getMatchedResult(JS_RE)(vm.decodedHtmlStr) || ''
+            const css = getMatchedResult(CSS_RE)(vm.decodedHtmlStr) || ''
+            const html = getMatchedResult(HTML_RE)(vm.decodedHtmlStr) || vm.decodedHtmlStr
                 .replace(JS_RE, '')
                 .replace(CSS_RE, '')
                 .replace(HTML_RE, '')
@@ -116,7 +112,6 @@ export default {
 
             return { js, css, html, jsLibs, cssLibs, codesandboxOptions }
         },
-        showOnlineBtns: vm => parseAndDecode(vm.onlineBtnsStr),
     },
     methods: {
         onClickControl () {
diff --git a/src/constants.js b/src/constants.js
index f600a95..b898648 100644
--- a/src/constants.js
+++ b/src/constants.js
@@ -26,7 +26,7 @@ new Vue({
     components: { App },
 })`
 
-const CODE_SANDBOX_HTML = `\n<div id="app"></div>`
+const CODE_SANDBOX_HTML = '\n<div id="app"></div>'
 
 module.exports = {
     JS_RE,
diff --git a/src/highlight.js b/src/highlight.js
index e99f622..9b77bfb 100644
--- a/src/highlight.js
+++ b/src/highlight.js
@@ -1,15 +1,10 @@
-// copy from https://github.com/vuejs/vuepress/blob/master/packages/%40vuepress/markdown/lib/highlight.js
+// https://github.com/vuejs/vuepress/blob/master/packages/@vuepress/markdown/lib/highlight.js
 
 const prism = require('prismjs')
+const escapeHtml = require('escape-html')
 const loadLanguages = require('prismjs/components/index')
-const {
-    logger,
-    chalk,
-    escapeHtml,
-} = require('@vuepress/shared-utils')
 
-// required to make embedded highlighting work...
-loadLanguages(['markup', 'css', 'javascript'])
+// loadLanguages(['markup', 'css', 'javascript'])
 
 function wrap (code, lang) {
     if (lang === 'text') {
@@ -18,29 +13,38 @@ function wrap (code, lang) {
     return `<pre v-pre class="language-${lang}"><code>${code}</code></pre>`
 }
 
+function getLangCodeFromExtension (extension) {
+    const extensionMap = {
+        vue: 'markup',
+        html: 'markup',
+        md: 'markdown',
+        rb: 'ruby',
+        ts: 'typescript',
+        py: 'python',
+        sh: 'bash',
+        yml: 'yaml',
+        styl: 'stylus',
+        kt: 'kotlin',
+        rs: 'rust',
+    }
+
+    return extensionMap[extension] || extension
+}
+
 module.exports = (str, lang) => {
     if (!lang) {
         return wrap(str, 'text')
     }
     lang = lang.toLowerCase()
     const rawLang = lang
-    if (lang === 'vue' || lang === 'html') {
-        lang = 'markup'
-    }
-    if (lang === 'md') {
-        lang = 'markdown'
-    }
-    if (lang === 'ts') {
-        lang = 'typescript'
-    }
-    if (lang === 'py') {
-        lang = 'python'
-    }
+
+    lang = getLangCodeFromExtension(lang)
+
     if (!prism.languages[lang]) {
         try {
             loadLanguages([lang])
         } catch (e) {
-            logger.warn(chalk.yellow(`[vuepress] Syntax highlight for language "${lang}" is not supported.`))
+            console.warn(`[vuepress] Syntax highlight for language "${lang}" is not supported.`)
         }
     }
     if (prism.languages[lang]) {
diff --git a/src/index.js b/src/index.js
index b2007e4..8960d4f 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,7 +1,6 @@
 const path = require('path')
-const getHighlightCodeHtml = require('./highlight')
-const { encodeAndStringify } = require('./utils')
 const markdownItContainer = require('markdown-it-container')
+const { encodeAndStringify } = require('./utils')
 
 const defaults = {
     onlineBtns: {
@@ -81,6 +80,7 @@ module.exports = (options = {}) => {
         return `
             <DemoAndCode
                 htmlStr="${encodeURIComponent(htmlStr)}"
+                language="${language}"
                 showText="${showText}"
                 hideText="${hideText}"
                 jsLibsStr="${jsLibsStr}"
@@ -89,12 +89,6 @@ module.exports = (options = {}) => {
                 onlineBtnsStr="${onlineBtnsStr}"
                 codesandboxStr="${codesandboxStr}"
             >
-                <template slot="code">
-                    <div class="language-${language} extra-class">
-                        ${getHighlightCodeHtml(htmlStr, language)}
-                    </div>
-                </template>
-
                 <template slot="demo">
         `
     }
diff --git a/test/__snapshots__/DemoAndCode.test.js.snap b/test/__snapshots__/DemoAndCode.test.js.snap
index cb6c576..957b916 100644
--- a/test/__snapshots__/DemoAndCode.test.js.snap
+++ b/test/__snapshots__/DemoAndCode.test.js.snap
@@ -70,6 +70,17 @@ exports[`DemoAndCode should be rendered 1`] = `
   <div
     class="code-wrapper"
     style="max-height: 200px;"
-  />
+  >
+    <div
+      class="language-vue' extra-class"
+    >
+      <pre
+        class="language-vue"
+        v-pre=""
+      >
+        <code />
+      </pre>
+    </div>
+  </div>
 </section>
 `;
diff --git a/test/utils.test.js b/test/utils.test.js
index d25db78..7f785ec 100644
--- a/test/utils.test.js
+++ b/test/utils.test.js
@@ -7,19 +7,19 @@ import {
 
 describe('utils', () => {
     it('getJsTmpl', () => {
-        const code = `  export default { data: () => ({}) }\n\n\n`
-        const result = getJsResult(`data: () => ({})`)
+        const code = '  export default { data: () => ({}) }\n\n\n'
+        const result = getJsResult('data: () => ({})')
 
-        expect(getJsTmpl(``)).toBe(getJsResult(``))
+        expect(getJsTmpl('')).toBe(getJsResult(''))
         expect(getJsTmpl(code)).toBe(result)
     })
 
     it('getMatchedResult', () => {
         const re = /export default {(.*)}/
-        const code = `  export default { data: () => ({}) }\n\n\n`
+        const code = '  export default { data: () => ({}) }\n\n\n'
         const result = getMatchedResult(re)(code)
 
-        expect(result).toBe(`data: () => ({})`)
+        expect(result).toBe('data: () => ({})')
     })
 
     it('parseAndDecode and encodeAndStringify', () => {