feat(webpack): allow watching node_modules (#9781)

packages/webpack5/__tests__/configuration/__snapshots__/base.spec.ts.snap

@@ -636,3 +636,9 @@ exports[`base configuration for ios 1`] = `
   }
 }"
 `;
+
+exports[`base configuration support env.watchNodeModules 1`] = `
+Object {
+  "managedPaths": Array [],
+}
+`;

packages/webpack5/__tests__/configuration/base.spec.ts

@@ -22,6 +22,14 @@ describe('base configuration', () => {
 		});
 	}
 
+	it('support env.watchNodeModules', () => {
+		init({
+			ios: true,
+			watchNodeModules: true,
+		});
+		expect(base(new Config()).get('snapshot')).toMatchSnapshot();
+	});
+
 	it('supports dotenv', () => {
 		const fsSpy = jest.spyOn(fs, 'existsSync');
 		fsSpy.mockReturnValue(true);

packages/webpack5/src/configuration/base.ts

@@ -124,6 +124,13 @@ export default function (config: Config, env: IWebpackEnv = _env): Config {
 		],
 	});
 
+	// allow watching node_modules
+	config.when(env.watchNodeModules, (config) => {
+		config.set('snapshot', {
+			managedPaths: [],
+		});
+	});
+
 	// Set up Terser options
 	config.optimization.minimizer('TerserPlugin').use(TerserPlugin, [
 		{

packages/webpack5/src/index.ts

@@ -45,6 +45,7 @@ export interface IWebpackEnv {
 
 	// misc
 	replace?: string[] | string;
+	watchNodeModules?: boolean;
 }
 
 interface IChainEntry {