Clean-up in lib/fork.js

lib/fork.js

@@ -12,8 +12,7 @@ if (fs.realpathSync(__filename) !== __filename) {
 // In case the test file imports a different AVA install,
 // the presence of this variable allows it to require this one instead
 const AVA_PATH = path.resolve(__dirname, '..');
-
-const workerPath = require.resolve('./worker/subprocess');
+const WORKER_PATH = require.resolve('./worker/subprocess');
 
 const useAdvanced = process.versions.node >= '12.17.0';
 // FIXME: Fix this in api.js or cli.js.
@@ -32,12 +31,12 @@ module.exports = (file, options, execArgv = process.execArgv) => {
 	};
 
 	options = {
-		file,
 		baseDir: process.cwd(),
+		file,
 		...options
 	};
 
-	const subprocess = childProcess.fork(workerPath, options.workerArgv, {
+	const subprocess = childProcess.fork(WORKER_PATH, options.workerArgv, {
 		cwd: options.projectDir,
 		silent: true,
 		env: {NODE_ENV: 'test', ...process.env, ...options.environmentVariables, AVA_PATH},
@@ -73,15 +72,15 @@ module.exports = (file, options, execArgv = process.execArgv) => {
 				return;
 			}
 
-			if (message.ava.type === 'ready-for-options') {
-				send({type: 'options', options: serializeOptions(options)});
-				return;
-			}
-
-			if (message.ava.type === 'ping') {
-				send({type: 'pong'});
-			} else {
-				emitStateChange(message.ava);
+			switch (message.ava.type) {
+				case 'ready-for-options':
+					send({type: 'options', options: serializeOptions(options)});
+					break;
+				case 'ping':
+					send({type: 'pong'});
+					break;
+				default:
+					emitStateChange(message.ava);
 			}
 		});
 
@@ -106,6 +105,9 @@ module.exports = (file, options, execArgv = process.execArgv) => {
 	});
 
 	return {
+		file,
+		promise,
+
 		exit() {
 			forcedExit = true;
 			subprocess.kill();
@@ -117,9 +119,6 @@ module.exports = (file, options, execArgv = process.execArgv) => {
 
 		onStateChange(listener) {
 			return emitter.on('stateChange', listener);
-		},
-
-		file,
-		promise
+		}
 	};
 };