const chalk = require('chalk'); const log = require('./log'); const babel = require('@babel/core'); module.exports = (filePath, callback) => { // Transform the file. // Check process.env.NODE_ENV to see if we should create sourcemaps. babel.transformFile( filePath, { sourceMaps: process.env.NODE_ENV === 'development' ? 'inline' : false, comments: false, plugins: [ ['add-header-comment', { 'header': [ `DO NOT EDIT THIS FILE.\nSee the following change record for more information,\nhttps://www.drupal.org/node/2815083\n@preserve` ] }] ] }, (err, result) => { if (err) { log(chalk.red(err)); process.exitCode = 1; } else { callback(result.code); } } ); };