Add test/helpers

Author: danez

package.json

@@ -44,7 +44,7 @@
   "scripts": {
     "clean": "rimraf lib/",
     "build": "babel src/ --out-dir lib/",
-    "format": "prettier --write --trailing-comma all \"src/**/*.js\" \"test/*.test.js\" && prettier --write --trailing-comma es5 \"scripts/*.js\"",
+    "format": "prettier --write --trailing-comma all \"src/**/*.js\" \"test/*.test.js\" \"test/helpers/*.js\" && prettier --write --trailing-comma es5 \"scripts/*.js\"",
     "lint": "eslint src test",
     "precommit": "lint-staged",
     "prepublish": "yarn run clean && yarn run build",
@@ -109,6 +109,10 @@
       "prettier --trailing-comma all --write",
       "git add"
     ],
+    "test/helpers/*.js": [
+      "prettier --trailing-comma all --write ",
+      "git add"
+    ],
     "package.json": [
       "node ./scripts/yarn-install.js",
       "git add yarn.lock"

test/helpers/createTestDirectory.js

@@ -5,9 +5,9 @@ import rimraf from "rimraf";
 export default function createTestDirectory(baseDirectory, testTitle, cb) {
   const directory = path.join(baseDirectory, escapeDirectory(testTitle));
 
-  rimraf(directory, (err) => {
+  rimraf(directory, err => {
     if (err) return cb(err);
-    mkdirp(directory, (mkdirErr) => cb(mkdirErr, directory));
+    mkdirp(directory, mkdirErr => cb(mkdirErr, directory));
   });
 }