Resolving the “process is not defined” error in a Create React App project required configuring webpack’s resolve.fallback option to provide polyfills or mock implementations for Node.js core modules that are not available in the browser environment.
const { override } = require('customize-cra');
const webpack = require('webpack');
module.exports = override((config) => {
config.resolve.fallback = {
...config.resolve.fallback,
'process': false, // Set 'process' to false instead of using a mock
'zlib': require.resolve('browserify-zlib'),
'querystring': require.resolve('querystring-es3'),
'stream': require.resolve('stream-browserify'),
'path': require.resolve('path-browserify'),
'fs': false,
'timers': require.resolve('timers-browserify'),
'crypto': require.resolve('crypto-browserify'),
'http': require.resolve('stream-http'),
'https': require.resolve('https-browserify'),
'net': require.resolve('net-browserify'),
'url': require.resolve('url/'),
'assert': require.resolve('assert/'),
'vm': require.resolve('vm-browserify'),
'async_hooks': false,
'child_process': false,
};
// Exclude the 'destroy' package
config.module.rules.push({
test: //node_modules/destroy//,
use: 'null-loader',
});
// Resolve conflicting values for 'process.env'
config.plugins.push(
new webpack.EnvironmentPlugin({
NODE_ENV: process.env.NODE_ENV === 'debug',
})
);
return config;
});
Error That i Get
process is not defined
ReferenceError: process is not defined
at ./node_modules/readable-stream/lib/_stream_writable.js (http://localhost:3000/static/js/bundle.js:130687:18)
at options.factory (http://localhost:3000/static/js/bundle.js:227078:31)
at __webpack_require__ (http://localhost:3000/static/js/bundle.js:226477:32)
at fn (http://localhost:3000/static/js/bundle.js:226736:21)
at ./node_modules/readable-stream/readable-browser.js (http://localhost:3000/static/js/bundle.js:131512:20)
at options.factory (http://localhost:3000/static/js/bundle.js:227078:31)
at __webpack_require__ (http://localhost:3000/static/js/bundle.js:226477:32)
at fn (http://localhost:3000/static/js/bundle.js:226736:21)
at ./node_modules/browserify-sign/browser/index.js (http://localhost:3000/static/js/bundle.js:33021:14)
at options.factory (http://localhost:3000/static/js/bundle.js:227078:31)
at __webpack_require__ (http://localhost:3000/static/js/bundle.js:226477:32)
at fn (http://localhost:3000/static/js/bundle.js:226736:21)
at ./node_modules/crypto-browserify/index.js (http://localhost:3000/static/js/bundle.js:40757:12)
at options.factory (http://localhost:3000/static/js/bundle.js:227078:31)
at __webpack_require__ (http://localhost:3000/static/js/bundle.js:226477:32)
at fn (http://localhost:3000/static/js/bundle.js:226736:21)
at ./node_modules/etag/index.js (http://localhost:3000/static/js/bundle.js:58075:14)
at options.factory (http://localhost:3000/static/js/bundle.js:227078:31)
at __webpack_require__ (http://localhost:3000/static/js/bundle.js:226477:32)
at fn (http://localhost:3000/static/js/bundle.js:226736:21)