diff --git a/.gitignore b/.gitignore
index f80df97..8da2c81 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ server/test-dir/*
 !server/test-dir/sub-dir/main.css
 !server/test-dir/index.html
 node_modules
+package-lock.json
\ No newline at end of file
diff --git a/lib/helpers/lock-directory.js b/lib/helpers/lock-directory.js
index c8920c5..670c9eb 100644
--- a/lib/helpers/lock-directory.js
+++ b/lib/helpers/lock-directory.js
@@ -1,11 +1,11 @@
 module.exports = function () {
   let paths = [...arguments];
-  return new Promise((reslove, reject) => {
+  return new Promise((resolve, reject) => {
     paths.forEach((path, i) => {
-      if (path.match('../')) {
+      if (path.includes('../')) {
         reject('can\'t access directories above base dir');
       }
     });
-    reslove();
+    resolve();
   });
 };
diff --git a/lib/routes/append.js b/lib/routes/append.js
index c6776f6..bfdd958 100644
--- a/lib/routes/append.js
+++ b/lib/routes/append.js
@@ -13,6 +13,7 @@ var lockDirectory = require('../helpers/lock-directory');
  */
 module.exports = (req, res) => {
   const filePath = path.join(res.locals.baseDir, req.body.path);
+  const dirPath = path.dirname(filePath);
   lockDirectory(req.body.path)
     .then(() => fsp.ensureDir(dirPath))
     .then(() => fsp.appendFile(filePath, req.body.contents))