test: test compatibility with Vue CLI 2

Author: cloydlau

demo/vue-cli2/.babelrc__

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+{
+  "presets": [
+    ["env", {
+      "modules": false,
+      "targets": {
+        "browsers": ["> 1%", "last 2 versions", "not ie <= 8"]
+      }
+    }],
+    "stage-2"
+  ],
+  "plugins": ["transform-vue-jsx", "transform-runtime"]
+}

demo/vue-cli2/.editorconfig

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+root = true
+
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 2
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true

demo/vue-cli2/.gitignore

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+.DS_Store
+node_modules/
+/dist/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Editor directories and files
+.idea
+.vscode
+*.suo
+*.ntvs*
+*.njsproj
+*.sln

demo/vue-cli2/.node-version

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+14

demo/vue-cli2/.postcssrc.js

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+// https://github.com/michael-ciniawsky/postcss-load-config
+
+module.exports = {
+  "plugins": {
+    "postcss-import": {},
+    "postcss-url": {},
+    // to edit target browsers: use "browserslist" field in package.json
+    "autoprefixer": {}
+  }
+}

demo/vue-cli2/README.md

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+# vue-cli2
+
+> A Vue.js project
+
+## Build Setup
+
+``` bash
+# install dependencies
+npm install
+
+# serve with hot reload at localhost:8080
+npm run dev
+
+# build for production with minification
+npm run build
+
+# build for production and view the bundle analyzer report
+npm run build --report
+```
+
+For a detailed explanation on how things work, check out the [guide](http://vuejs-templates.github.io/webpack/) and [docs for vue-loader](http://vuejs.github.io/vue-loader).

demo/vue-cli2/babel.config.js

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+module.exports = {
+  presets: [
+    '@babel/preset-env',
+  ],
+}

demo/vue-cli2/build/build.js

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+'use strict'
+require('./check-versions')()
+
+process.env.NODE_ENV = 'production'
+
+const path = require('path')
+const ora = require('ora')
+const rm = require('rimraf')
+const chalk = require('chalk')
+const webpack = require('webpack')
+const config = require('../config')
+const webpackConfig = require('./webpack.prod.conf')
+
+const spinner = ora('building for production...')
+spinner.start()
+
+rm(path.join(config.build.assetsRoot, config.build.assetsSubDirectory), (err) => {
+  if (err)
+    throw err
+  webpack(webpackConfig, (err, stats) => {
+    spinner.stop()
+    if (err)
+      throw err
+    process.stdout.write(`${stats.toString({
+      colors: true,
+      modules: false,
+      children: false, // If you are using ts-loader, setting this to true will make TypeScript errors show up during build.
+      chunks: false,
+      chunkModules: false,
+    })}\n\n`)
+
+    if (stats.hasErrors()) {
+      console.log(chalk.red('  Build failed with errors.\n'))
+      process.exit(1)
+    }
+
+    console.log(chalk.cyan('  Build complete.\n'))
+    console.log(chalk.yellow(
+      '  Tip: built files are meant to be served over an HTTP server.\n'
+      + '  Opening index.html over file:// won\'t work.\n',
+    ))
+  })
+})

demo/vue-cli2/build/check-versions.js

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+'use strict'
+const chalk = require('chalk')
+const semver = require('semver')
+const shell = require('shelljs')
+const packageConfig = require('../package.json')
+
+function exec(cmd) {
+  return require('child_process').execSync(cmd).toString().trim()
+}
+
+const versionRequirements = [
+  {
+    name: 'node',
+    currentVersion: semver.clean(process.version),
+    versionRequirement: packageConfig.engines.node,
+  },
+]
+
+if (shell.which('npm')) {
+  versionRequirements.push({
+    name: 'npm',
+    currentVersion: exec('npm --version'),
+    versionRequirement: packageConfig.engines.npm,
+  })
+}
+
+module.exports = function () {
+  const warnings = []
+
+  for (let i = 0; i < versionRequirements.length; i++) {
+    const mod = versionRequirements[i]
+
+    if (!semver.satisfies(mod.currentVersion, mod.versionRequirement)) {
+      warnings.push(`${mod.name}: ${
+        chalk.red(mod.currentVersion)} should be ${
+        chalk.green(mod.versionRequirement)}`,
+      )
+    }
+  }
+
+  if (warnings.length) {
+    console.log('')
+    console.log(chalk.yellow('To use this template, you must update following to modules:'))
+    console.log()
+
+    for (let i = 0; i < warnings.length; i++) {
+      const warning = warnings[i]
+      console.log(`  ${warning}`)
+    }
+
+    console.log()
+    process.exit(1)
+  }
+}