logger.js: fix beautifyStack on Windows. Fixes: #255

The RegExp did not take into account Windows Drive Letters.

lib/logger.js

@@ -8,7 +8,7 @@ var log = new Squeak({separator: ' '});
 var x = module.exports;
 
 function beautifyStack(stack) {
-	var re = /(?:^(?! {4}at\b).{6})|(?:\((?:[\\\/](?:(?!node_modules[\\\/]ava[\\\/])[^:\\\/])+)+:\d+:\d+\))/;
+	var re = /(?:^(?! {4}at\b).{6})|(?:\((?:[A-Z]:)?(?:[\\\/](?:(?!node_modules[\\\/]ava[\\\/])[^:\\\/])+)+:\d+:\d+\))/;
 	var found = false;
 
 	return stack.split('\n').filter(function (line) {
@@ -18,6 +18,8 @@ function beautifyStack(stack) {
 	}).join('\n');
 }
 
+x._beautifyStack = beautifyStack;
+
 log.type('success', {
 	color: 'green',
 	prefix: figures.tick

test/logger.js

@@ -0,0 +1,25 @@
+'use strict';
+var test = require('tap').test;
+var logger = require('../lib/logger');
+
+test('beautify stack - removes uninteresting lines', function (t) {
+	try {
+		fooFunc();
+	} catch (e) {
+		var stack = logger._beautifyStack(e.stack);
+		t.match(stack, /fooFunc/);
+		t.match(stack, /barFunc/);
+		t.match(e.stack, /Module._compile/);
+		t.notMatch(stack, /Module\._compile/);
+		t.end();
+	}
+});
+
+function fooFunc() {
+	barFunc();
+}
+
+function barFunc() {
+	throw new Error();
+}
+