babel-preset-test-bundled-dependencies/node_modules/webpack/buildin/module.js

Allow custom config for create-react-app without ejecting

module.exports = function(module) {
	if(!module.webpackPolyfill) {
		module.deprecate = function() {};
		module.paths = [];
		// module.parent = undefined by default
		module.children = [];
		module.webpackPolyfill = 1;
	}
	return module;
}