89 lines
2.7 KiB
JavaScript
89 lines
2.7 KiB
JavaScript
const ncc = require('@zeit/ncc')
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const { existsSync, readFileSync } = require('fs')
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const { basename, dirname, extname, join } = require('path')
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module.exports = function (task) {
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// eslint-disable-next-line require-yield
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task.plugin('ncc', {}, function* (file, options) {
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if (options.externals && options.packageName) {
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options.externals = { ...options.externals }
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delete options.externals[options.packageName]
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}
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return ncc(join(__dirname, file.dir, file.base), {
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filename: file.base,
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minify: true,
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...options,
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}).then(({ code, assets }) => {
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Object.keys(assets).forEach((key) => {
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let data = assets[key].source
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if (join(file.dir, key).endsWith('terser-webpack-plugin/worker.js')) {
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data = Buffer.from(
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data
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.toString()
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.replace(
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`require('terser')`,
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`require("${options.externals['terser']}")`
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)
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)
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}
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this._.files.push({
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data,
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base: basename(key),
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dir: join(file.dir, dirname(key)),
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})
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})
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if (options && options.packageName) {
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writePackageManifest.call(this, options.packageName, file.base)
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}
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file.data = Buffer.from(code, 'utf8')
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})
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})
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}
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// This function writes a minimal `package.json` file for a compiled package.
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// It defines `name`, `main`, `author`, and `license`. It also defines `types`.
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// n.b. types intended for development usage only.
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function writePackageManifest(packageName, main) {
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const packagePath = require.resolve(packageName + '/package.json')
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let { name, author, license } = require(packagePath)
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const compiledPackagePath = join(__dirname, `compiled/${packageName}`)
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const potentialLicensePath = join(dirname(packagePath), './LICENSE')
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if (existsSync(potentialLicensePath)) {
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this._.files.push({
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dir: compiledPackagePath,
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base: 'LICENSE',
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data: readFileSync(potentialLicensePath, 'utf8'),
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})
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} else {
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// license might be lower case and not able to be found on case-sensitive
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// file systems (ubuntu)
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const otherPotentialLicensePath = join(dirname(packagePath), './license')
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if (existsSync(otherPotentialLicensePath)) {
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this._.files.push({
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dir: compiledPackagePath,
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base: 'LICENSE',
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data: readFileSync(otherPotentialLicensePath, 'utf8'),
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})
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}
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}
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this._.files.push({
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dir: compiledPackagePath,
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base: 'package.json',
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data:
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JSON.stringify(
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Object.assign(
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{},
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{ name, main: `${basename(main, '.' + extname(main))}` },
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author ? { author } : undefined,
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license ? { license } : undefined
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)
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) + '\n',
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})
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}
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