# es-node-runner

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Node runner that transpiles typescript or es modules using blazing fast ⚡ esbuild and restarts the process automatically on change. Suitable for node development server.

## Usage

1. Install as devDependency using npm or yarn,</br>

   ```sh
   npm i --save-dev es-node-runner

   # or

   yarn add -D es-node-runner
   ```

2. Add your config using one of the available formats. es-node-runner uses only one file if there are multiple configuration files in the root directory, The priority order is as follows,</br>

   - es-node-runner.config.js
   - package.json

   If no configuration is found, then default config will be used.

3. Finally, add `es-node-runner` to package.json scripts</br>

   ```json
   {
     "scripts": {
       "<script_name>": "es-node-runner"
     }
   }
   ```

   and run the script using npm or yarn as, `npm run <script_name>` or `yarn <script_name>`</br>

## Configurations

Following options are available for configuring es-node-runner.

```ts
buildOptions: {
    // Entry point for bundling
    entry: string,
    // Sets the output directory for build operation.
    outdir: string,
    // Sets the file name for bundled output. This is applicable only if bundle is true.
    outfile: string,
    format: 'iife' | 'cjs' | 'esm',
    // Sets the target for generated code
    target: string,
    // Generates sourcemap
    sourcemap: boolean,
},
watchOptions: {
    // Path or list of paths to be watched for changes.
    watch: string | string[],
    // Ignore list of files / paths from watching for changes.
    ignore: string | string[],
},
spawnOptions: {
    // Rebuild will be delayed by specified time (in millisecond).
    delay: number,
    // Restart sub process manually with terminal cmd
    restartCmd: string,
    // Clear the terminal output before restart
    clearTerminal: boolean,
    // To restart manually with cmd, set this to false. This is helpful if we want to restart only when necessary
    autoRestart: boolean,
    // Enable or disable logging
    logging: boolean,
    // Pass cli options to node executable
    args: string[];
},
```

Note: All options are optional.

## CLI Options

Following command line options are available,

1. `--debug` - with optional comma(,) separated namespace to enable specific namespace for debugging.

## Config file formats

#### ESM version of config file

##### Example

```js
export default {
  spawnOptions: {
    // This will disables the logging if debug is enabled
    logging: !process.env.DEBUG,
  },
};
```

#### CommonJs version of config file

##### Example

```js
module.exports = {
  spawnOptions: {
    // This will disables the logging if debug is enabled
    logging: !process.env.DEBUG,
  },
};
```

#### For auto-completion, add `@type` jsdoc comment.

##### Example

```js
/**
 * @type {import('es-node-runner').Config}
 */
module.exports = {
  buildOptions: {
    entry: 'src/index.ts',
  },
  watchOptions: {
    watch: ['src'],
  },
};
```