@cozka/rollup-code-modifier

@cozka/rollup-code-modifier is a Rollup plugin that allows you to modify the transpiled code based on a custom configuration. You can use it to perform various string replacements or transformations on the source code during the bundling process.

日本語のREADMEはこちら

Installation

npm install @cozka/rollup-code-modifier

Usage

To use the plugin, add it to your rollup.config.js file as follows:

import CodeModifier from '@cozka/rollup-code-modifier';

export default {
  input: 'src/index.js',
  output: {
    file: 'dist/bundle.js',
    format: 'esm',
  },
  plugins: [
    CodeModifier({
      modifiers: [
        {
          target: 'src/utils.js',
          pattern: /console\.log\(.*?\);?/g,
          replacement: '',
        },
        {
          target: /src\/components\/.*/,
          modify: (code) => code.replace('var ', 'let '),
        },
      ],
    }),
  ],
};

Configuration Options

CodeModifierConfig

| Property | Type | Description | | ----------- | ------------------ | ---------------------------------------------- | | modifiers | ModifierConfig[] | List of configurations for modifying the code. |

ModifierConfig

ModifierConfig can be either a CustomFunctionModifierConfig or a PatternBasedModifierConfig.

CustomFunctionModifierConfig

| Property | Type | Description | | -------- | ---------------------------------------------- | ----------------------------------------------------------------------------------------------------- | | target | string \| RegExp | A regular expression to determine which files are affected. If not specified, all files are affected. | | modify | (code: string, targetPath: string) => string | A function that modifies the source code. |

PatternBasedModifierConfig

| Property | Type | Description | | ------------- | -------------------- | ----------------------------------------------------------------------------------------------------- | | target | string \| RegExp | A regular expression to determine which files are affected. If not specified, all files are affected. | | pattern | string \| RegExp | The pattern to match in the file content. | | replacement | string \| function | The string or function to replace the matched pattern. |

Notes

• If you're using sourcemap, this plugin might cause discrepancies between the source code and the transformed code.

License

MIT