sample reporter that exits process with non-zero exit code, useful for continuous integration tests

jscpdReporter.js

const DUPLICATION_LIMIT = 100;
const FILE_SPAN_LIMIT = 2;

module.exports = function() {
	/**
	 * @see node_modules/jscpd/src/report.coffee
	 */
	if (this.map.numberOfDuplication > DUPLICATION_LIMIT || this.map.numberOfFiles > FILE_SPAN_LIMIT) {
		console.error('Copy Paste detection found too many files over threshold.\n');
		console.error(this.stdReporter());
		process.exit(1);
	}

	return [true, true, true];
};

see jscpd