# bundle Bundle a library Builder properties can be configured in angular.json when defining the builder, or when invoking it. ## Properties ### babelConfig Type: `string` Path to a function which takes a babel config and returns an updated babel config ### entryFile Type: `string` The path to the entry file, relative to project. ### external Type: `array` A list of external modules that will not be bundled (react, react-dom, etc.). ### outputPath Type: `string` The output path of the generated files. ### project Type: `string` The path to package.json file. ### rollupConfig Type: `string` Path to a function which takes a rollup config and returns an updated rollup config ### tsConfig Type: `string` The path to tsconfig file. ### umdName Type: `string` The name of your module in UMD format. Defaulted to your project name. ### watch Default: `false` Type: `boolean` Enable re-building when files change.