Run eslint on staged Files

lintStaged.js

const { execSync } = require('child_process');
const path = require('path');

/**
 * This script will run eslint only on staged files.
 * Currently is being run as a pre-commit hook
 * @usage
 * npm run fix-staged
 */
try {
	const stagedFiles = execSync('git diff --name-only --cached')
		.toString()
		.split('\n');

	const filteredFiles = stagedFiles.filter((filePath) => filePath !== path.basename(filePath) && filePath.endsWith('.js'));

	if (filteredFiles.length) {
		execSync(`.\\node_modules\\.bin\\eslint --fix ${filteredFiles.join(' ')}`, { stdio: 'inherit' });
	}
} catch (err) {
	// the eslint execSync will return an error code 1
	// if it finds linting issues
	// exit with error code 1 to make commit fail
	process.exit(1);
}