Example with options
This example demonstrates passing options to coverage-istanbul-loader. The options are passed-on to istanbul-lib-instrument, so all the same options are supported.
In the webpack.config.js file, we set the compact option to true, which produces minified code. You’ll notice that the output bundle contains a mix of minified and unminified code. This is because the compact option only affects the instrumented code, not the code that Webpack adds. You can set mode: "production" in the webpack.config.js file to minify the entire bundle.
Structure
| Folder/File | Description |
|---|---|
| webpack.config.js | The webpack config file. It uses the “coverage-istanbul-loader” loader and sets the compact option to true. |
| src folder | The original source code. |
| dist/main.js | The bundled webpack output. The instrumented code is minified due to the compact: true option. |
| dist/main.js.map | The output sourcemap. Even though the code is minified, it still correctly maps back to the original source. |