@financial-times/athloi/src/tasks/run.js

const logger = require('../logger');
const taskify = require('../cli-task');
const runPackage = require('../run-package');

function run(packages = [], script) {
	// filter out packages without the requested command
	const filteredPackages = packages.filter(({ manifest }) => {
		return manifest.scripts && manifest.scripts[script];
	});

	logger.debug(
		`Found ${filteredPackages.length} packages with script "${script}"`,
	);

	// create a queue of tasks to run
	return filteredPackages.map(pkg => {
		const apply = () => runPackage('npm', ['run', script], pkg.location);
		return { pkg, apply };
	});
}

exports.task = run;

exports.register = program => {
	program
		.command('run <script>')
		.description(
			'Runs an npm script in each package that contains that script.',
		)
		.action(taskify(run));
};