rsnext/packages/next/taskfile-babel.js
2019-05-03 11:57:47 -05:00

39 lines
1.3 KiB
JavaScript

// taskr babel plugin with Babel 7 support
// https://github.com/lukeed/taskr/pull/305
'use strict'
const extname = require('path').extname
const transform = require('@babel/core').transform
module.exports = function (task) {
task.plugin('babel', {}, function * (file, babelOpts, { stripExtension } = {}) {
const options = {
...babelOpts,
compact: true,
babelrc: false,
configFile: false,
filename: file.base
}
const output = transform(file.data, options)
const ext = extname(file.base)
// Include declaration files as they are
if (file.base.endsWith('.d.ts')) return
// Replace `.ts|.tsx` with `.js` in files with an extension
if (ext) {
const extRegex = new RegExp(ext.replace('.', '\\.') + '$', 'i')
// Remove the extension if stripExtension is enabled or replace it with `.js`
file.base = file.base.replace(extRegex, stripExtension ? '' : '.js')
}
// Workaround for noop.js loading
if (file.base === 'next-dev.js') output.code = output.code.replace('// REPLACE_NOOP_IMPORT', `import('./noop');`)
file.data = Buffer.from(setNextVersion(output.code))
})
}
function setNextVersion (code) {
return code.replace(/process\.env\.__NEXT_VERSION/, `"${require('./package.json').version}"`)
}