/
build-lib.js
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/
build-lib.js
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const chalk = require('chalk')
const babel = require('@babel/core')
const { promisify } = require('util')
const glob = promisify(require('glob'))
const fs = require('fs')
const path = require('path')
const transformFile = promisify(babel.transformFile)
const { mkdir, stat, writeFile } = fs.promises
const SOURCE = 'packages/{*,@uppy/*}/src/**/*.js'
// Files not to build (such as tests)
const IGNORE = /\.test\.js$|__mocks__|svelte|angular|companion\//
// Files that should trigger a rebuild of everything on change
const META_FILES = [
'babel.config.js',
'package.json',
'package-lock.json',
'yarn.lock',
'bin/build-lib.js',
]
function lastModified (file) {
return stat(file).then((s) => s.mtime, (err) => {
if (err.code === 'ENOENT') {
return 0
}
throw err
})
}
async function buildLib () {
const metaMtimes = await Promise.all(META_FILES.map((filename) => lastModified(path.join(__dirname, '..', filename))))
const metaMtime = Math.max(...metaMtimes)
const files = await glob(SOURCE)
/* eslint-disable no-continue */
for (const file of files) {
if (IGNORE.test(file)) {
continue
}
const libFile = file.replace('/src/', '/lib/')
// on a fresh build, rebuild everything.
if (!process.env.FRESH) {
const srcMtime = await lastModified(file)
const libMtime = await lastModified(libFile)
.catch(() => 0) // probably doesn't exist
// Skip files that haven't changed
if (srcMtime < libMtime && metaMtime < libMtime) {
continue
}
}
const { code, map } = await transformFile(file, { sourceMaps: true })
await mkdir(path.dirname(libFile), { recursive: true })
await Promise.all([
writeFile(libFile, code),
writeFile(`${libFile}.map`, JSON.stringify(map)),
])
console.log(chalk.green('Compiled lib:'), chalk.magenta(libFile))
}
/* eslint-enable no-continue */
}
console.log('Using Babel version:', require('@babel/core/package.json').version)
buildLib().catch((err) => {
console.error(err.stack)
process.exit(1)
})