@beemo/driver-babel/src/BabelDriver.ts

Babel driver for Beemo.

import rimraf from 'rimraf';
import { Driver, DriverContext, DriverContextOptions, Path } from '@beemo/core';
import { BabelArgs, BabelConfig } from './types';

// Success: Writes file list to stdout
// Failure: Throws SyntaxError to stderr
export class BabelDriver extends Driver<BabelConfig> {
	override readonly name = '@beemo/driver-babel';

	override bootstrap() {
		this.setMetadata({
			bin: 'babel',
			commandOptions: {
				clean: {
					default: false,
					description: this.tool.msg('app:babelCleanOption'),
					type: 'boolean',
				},
			},
			configName: 'babel.config.js',
			configOption: '--config-file',
			description: this.tool.msg('app:babelDescription'),
			title: 'Babel',
			watchOptions: ['-w', '--watch'],
		});

		this.onBeforeExecute.listen(this.handleCleanTarget);
	}

	override extractErrorMessage(error: { message: string }): string {
		if (error.message.includes('SyntaxError')) {
			return error.message.split(/\s+at/u, 1)[0].trim();
		}

		return super.extractErrorMessage(error);
	}

	/**
	 * Automatically clean the target folder if --out-dir is used.
	 */
	private handleCleanTarget = (context: DriverContext<BabelArgs & DriverContextOptions>) => {
		const outDir = context.getRiskyOption('outDir', true);

		if (context.getRiskyOption('clean') && typeof outDir === 'string' && outDir) {
			rimraf.sync(Path.resolve(outDir).path());
		}

		return Promise.resolve();
	};
}