do more manual cleanup and specify globals

spec/fixtures/module/fork_ping.js

@@ -1,8 +1,10 @@
+const path = require('path')
+
 process.on('uncaughtException', function (error) {
   process.send(error.stack)
 })
 
-var child = require('child_process').fork(__dirname + '/ping.js')
+var child = require('child_process').fork(path.join(__dirname, '/ping.js'))
 process.on('message', function (msg) {
   child.send(msg)
 })

spec/fixtures/module/function.js

@@ -1 +1 @@
-exports.aFunction = function () { return 1127; }
+exports.aFunction = function () { return 1127 }

spec/fixtures/module/locale-compare.js

@@ -2,6 +2,6 @@ process.on('message', function () {
   process.send([
     'a'.localeCompare('a'),
     'ä'.localeCompare('z', 'de'),
-    'ä'.localeCompare('a', 'sv', { sensitivity: 'base' }),
+    'ä'.localeCompare('a', 'sv', { sensitivity: 'base' })
   ])
 })