feat: pwa

Author: yyx990803

packages/@vue/cli-plugin-pwa/__test__/.eslintrc

@@ -0,0 +1,5 @@
+{
+  "rules": {
+    "vue-libs/no-async-functions": 0
+  }
+}

packages/@vue/cli-plugin-pwa/__test__/pwa.spec.js

@@ -0,0 +1,73 @@
+jest.setTimeout(30000)
+
+const fs = require('fs')
+const path = require('path')
+const portfinder = require('portfinder')
+const { createServer } = require('http-server')
+const { defaults } = require('@vue/cli/lib/options')
+const create = require('@vue/cli-test-utils/createTestProject')
+const launchPuppeteer = require('@vue/cli-test-utils/launchPuppeteer')
+
+let server, browser
+test('pwa', async () => {
+  // it's ok to mutate here since jest loads each test in a separate vm
+  defaults.plugins['@vue/cli-plugin-pwa'] = {}
+  const project = await create('pwa-build', defaults)
+  expect(project.has('src/registerServiceWorker.js')).toBe(true)
+
+  const { stdout } = await project.run('vue-cli-service build')
+  expect(stdout).toMatch('Build complete.')
+
+  const distDir = path.join(project.dir, 'dist')
+  const hasFile = file => fs.existsSync(path.join(distDir, file))
+  expect(hasFile('index.html')).toBe(true)
+  expect(hasFile('favicon.ico')).toBe(true)
+  expect(hasFile('js')).toBe(true)
+  expect(hasFile('css')).toBe(true)
+
+  // PWA specific files
+  expect(hasFile('manifest.json')).toBe(true)
+  expect(hasFile('img/icons/android-chrome-512x512.png')).toBe(true)
+
+  // Make sure the base preload/prefetch are not affected
+  const index = await project.read('dist/index.html')
+  // should split and preload app.js & vendor.js
+  expect(index).toMatch(/<link rel=preload [^>]+app[^>]+\.js>/)
+  expect(index).toMatch(/<link rel=preload [^>]+vendor[^>]+\.js>/)
+  // should not preload manifest because it's inlined
+  expect(index).not.toMatch(/<link rel=preload [^>]+manifest[^>]+\.js>/)
+  // should inline manifest and wepback runtime
+  expect(index).toMatch('webpackJsonp')
+
+  // PWA specific directives
+  expect(index).toMatch(`<link rel=manifest href=/manifest.json>`)
+  expect(index).toMatch(`<!--[if IE]><link rel="shortcut icon" href="/favicon.ico"><![endif]-->`)
+  expect(index).toMatch(`<meta name=apple-mobile-web-app-capable content=yes>`)
+
+  // should import service worker script
+  const main = await project.read('src/main.js')
+  expect(main).toMatch(`import './registerServiceWorker'`)
+
+  const port = await portfinder.getPortPromise()
+  server = createServer({ root: distDir })
+
+  await new Promise((resolve, reject) => {
+    server.listen(port, err => {
+      if (err) return reject(err)
+      resolve()
+    })
+  })
+
+  const launched = await launchPuppeteer(`http://localhost:${port}/`)
+  browser = launched.browser
+
+  await new Promise(r => setTimeout(r, 500))
+  const logs = launched.logs
+  expect(logs.some(msg => msg.match(/Content is cached for offline use/))).toBe(true)
+  expect(logs.some(msg => msg.match(/This web app is being served cache-first/))).toBe(true)
+})
+
+afterAll(async () => {
+  await browser.close()
+  server.close()
+})

packages/@vue/cli-plugin-pwa/generator/index.js

@@ -0,0 +1,14 @@
+module.exports = api => {
+  api.render('./template')
+
+  api.postProcessFiles(files => {
+    const main = files['src/main.js']
+    if (main) {
+      // inject import for registerServiceWorker script into main.js
+      const lines = main.split('\n').reverse()
+      const lastImportIndex = lines.findIndex(line => line.match(/^import/))
+      lines[lastImportIndex] += `\nimport './registerServiceWorker'`
+      files['src/main.js'] = lines.reverse().join('\n') + '\n'
+    }
+  })
+}