Convert some classes to ES2015 classes

Author: sindresorhus

lib/ava-error.js

@@ -1,14 +1,11 @@
 'use strict';
 
-function AvaError(message) {
-	if (!(this instanceof AvaError)) {
-		throw new TypeError('Class constructor AvaError cannot be invoked without \'new\'');
+class AvaError extends Error {
+	constructor(message) {
+		super(message);
+		this.name = 'AvaError';
+		this.message = message;
 	}
-
-	this.message = message;
-	this.name = 'AvaError';
 }
 
-AvaError.prototype = Object.create(Error.prototype);
-
 module.exports = AvaError;

lib/concurrent.js

@@ -4,88 +4,80 @@ const isPromise = require('is-promise');
 const autoBind = require('auto-bind');
 const AvaError = require('./ava-error');
 
-function noop() {}
+class Concurrent {
+	constructor(tests, bail) {
+		if (!Array.isArray(tests)) {
+			throw new TypeError('Expected an array of tests');
+		}
 
-module.exports = Concurrent;
+		this.results = [];
+		this.passed = true;
+		this.reason = null;
+		this.tests = tests;
+		this.bail = bail || false;
 
-function Concurrent(tests, bail) {
-	if (!(this instanceof Concurrent)) {
-		throw new TypeError('Class constructor Concurrent cannot be invoked without \'new\'');
+		autoBind(this);
 	}
+	run() {
+		let results;
 
-	if (!Array.isArray(tests)) {
-		throw new TypeError('Expected an array of tests');
-	}
-
-	this.results = [];
-	this.passed = true;
-	this.reason = null;
-	this.tests = tests;
-	this.bail = bail || false;
-
-	autoBind(this);
-}
-
-Concurrent.prototype.run = function () {
-	let results;
+		try {
+			results = this.tests.map(this._runTest);
+		} catch (err) {
+			if (err instanceof AvaError) {
+				return this._results();
+			}
 
-	try {
-		results = this.tests.map(this._runTest);
-	} catch (err) {
-		if (err instanceof AvaError) {
-			return this._results();
+			throw err;
 		}
 
-		throw err;
-	}
+		const isAsync = results.some(isPromise);
 
-	const isAsync = results.some(isPromise);
+		if (isAsync) {
+			return Promise.all(results)
+				.catch(AvaError, () => {})
+				.then(this._results);
+		}
 
-	if (isAsync) {
-		return Promise.all(results)
-			.catch(AvaError, noop)
-			.then(this._results);
+		return this._results();
 	}
+	_runTest(test, index) {
+		const result = test.run();
 
-	return this._results();
-};
-
-Concurrent.prototype._runTest = function (test, index) {
-	const result = test.run();
+		if (isPromise(result)) {
+			return result.then(result => this._addResult(result, index));
+		}
 
-	if (isPromise(result)) {
-		return result.then(result => this._addResult(result, index));
+		return this._addResult(result, index);
 	}
+	_addResult(result, index) {
+		// always save result when not in bail mode or all previous tests pass
+		if ((this.bail && this.passed) || !this.bail) {
+			this.results[index] = result;
+		}
 
-	return this._addResult(result, index);
-};
+		if (result.passed === false) {
+			this.passed = false;
 
-Concurrent.prototype._addResult = function (result, index) {
-	// always save result when not in bail mode or all previous tests pass
-	if ((this.bail && this.passed) || !this.bail) {
-		this.results[index] = result;
-	}
+			// only set reason once
+			if (!this.reason) {
+				this.reason = result.reason;
+			}
 
-	if (result.passed === false) {
-		this.passed = false;
-
-		// only set reason once
-		if (!this.reason) {
-			this.reason = result.reason;
+			if (this.bail) {
+				throw new AvaError('Error in Concurrent while in bail mode');
+			}
 		}
 
-		if (this.bail) {
-			throw new AvaError('Error in Concurrent while in bail mode');
-		}
+		return result;
 	}
+	_results() {
+		return {
+			passed: this.passed,
+			reason: this.reason,
+			result: this.results
+		};
+	}
+}
 
-	return result;
-};
-
-Concurrent.prototype._results = function () {
-	return {
-		passed: this.passed,
-		reason: this.reason,
-		result: this.results
-	};
-};
+module.exports = Concurrent;