const prefixRE = /^CIV_APP_/; const ENV_SHOULD_PASS = ['NODE_ENV', 'HMR', 'SOCKET_SERVER', 'ERROR_OVERLAY']; module.exports = (opts) => { const env = {}; Object.keys(process.env).forEach((key) => { if (prefixRE.test(key) || ENV_SHOULD_PASS.includes(key)) { env[key] = process.env[key]; } }); for (const key in env) { env[key] = JSON.stringify(env[key]); } const define = {}; if (opts.define) { for (const key in opts.define) { define[key] = JSON.stringify(opts.define[key]); } } return { 'process.env': env, ...define, }; }