canvas-lms/frontend_build/bundles.js

/*
 * Copyright (C) 2015 - present Instructure, Inc.
 *
 * This file is part of Canvas.
 *
 * Canvas is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License as published by the Free
 * Software Foundation, version 3 of the License.
 *
 * Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Affero General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

const glob = require('glob')
const fs = require('fs')
const momentLocaleBundles = require('./momentBundles')

const entries = {}

const bundlesPattern = `${__dirname}/../app/{jsx,coffeescripts}/bundles/**/*.{coffee,js}`
const pluginBundlesPattern = `${__dirname}/../gems/plugins/*/app/{jsx,coffeescripts}/bundles/**/*.{coffee,js}`
const bundleNameRegexp = /\/(coffeescripts|jsx)\/bundles\/(.*).(coffee|js)/
const fileNameRegexp = /\/([^/]+)\.(coffee|js)/
const pluginNameRegexp = /plugins\/([^/]+)\/app/

const appBundles = glob.sync(bundlesPattern, [])
const pluginBundles = glob.sync(pluginBundlesPattern, [])

appBundles.forEach(entryFilepath => {
  const entryBundlePath = entryFilepath.replace(
    /^.*app\/(coffeescripts|jsx)\/bundles/,
    (_, dir) => `../app/${dir}/bundles`
  )
  const entryName = bundleNameRegexp.exec(entryBundlePath)[2]
  entries[entryName] = entryBundlePath
})

pluginBundles.forEach(entryFilepath => {
  const relativePath = entryFilepath.replace(/.*\/gems\/plugins/, '../gems/plugins')
  const pluginName = pluginNameRegexp.exec(entryFilepath)[1]
  const fileName = fileNameRegexp.exec(entryFilepath)[1]
  const bundleName = `${pluginName}-${fileName}`
  entries[bundleName] = relativePath
})

fs.writeFileSync(
  './node_modules/bundles-generated.js',
  `

if (typeof ENV !== 'undefined' && ENV.MOMENT_LOCALE && ENV.MOMENT_LOCALE !== 'en') {
  function loadLocale(locale) {
    switch (locale) {
      ${Object.entries(momentLocaleBundles)
        .map(
          ([assetName, jsFile]) => `
        case "${assetName}": return import(/* webpackChunkName: "${assetName}" */ "${jsFile}");
      `
        )
        .join('')}

      default:
        console.warn("couldn't load moment/locale/", locale)
    }
  }
  loadLocale('moment/locale/' + ENV.MOMENT_LOCALE)
}

export default function loadBundle(bundleName) {
  switch (bundleName) {
    ${Object.entries(entries)
      .map(
        ([entryName, entryBundlePath]) => `
      case "${entryName}": return import(/* webpackChunkName: "${entryName}" */ "${entryBundlePath}");
    `
      )
      .join('')}

    default:
      throw new Error("couldn't find bundle " + bundleName)
  }
}
`
)

module.exports = entries