diff --git a/.deepsource.toml b/.deepsource.toml
new file mode 100644
index 00000000..dee5b7c9
--- /dev/null
+++ b/.deepsource.toml
@@ -0,0 +1,12 @@
+version = 1
+
+[[analyzers]]
+name = "javascript"
+enabled = true
+
+  [analyzers.meta]
+  plugins = ["react"]
+
+[[analyzers]]
+name = "secrets"
+enabled = true
\ No newline at end of file
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
new file mode 100644
index 00000000..7fdf080e
--- /dev/null
+++ b/.github/workflows/codeql-analysis.yml
@@ -0,0 +1,67 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ main ]
+  schedule:
+    - cron: '41 22 * * 3'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'javascript' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
+        # Learn more:
+        # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+        # queries: ./path/to/local/query, your-org/your-repo/queries@main
+
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v1
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 https://git.io/JvXDl
+
+    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
+    #    and modify them (or add more) to build your code if your project
+    #    uses a compiled language
+
+    #- run: |
+    #   make bootstrap
+    #   make release
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1
diff --git a/README.md b/README.md
index 46349afc..c91312ca 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # Code Scanning Javascript Tutorial
 
+
 Welcome to the Code Scanning Javascript Tutorial! This tutorial will take you through how to set up Github Advanced Security: Code Scanning as well as interpret results that it may find. The following repository contains vulnerability [CVE-2018-20835](https://github.com/advisories/GHSA-x2mc-8fgj-3wmr) (aka Zip Slip) that was found by the [GitHub Security Lab](https://securitylab.github.com/).
 
 ## Introduction
@@ -189,4 +190,4 @@ Ready to talk about advanced security features for GitHub Enterprise? [Contact S
 
 Check out [GitHub's Security feature page](https://github.com/features/security) for more security features embedded into GitHub.
 
-Check out the Code Scanning [documentation](https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/about-code-scanning) for additional configuration options and technical details.
\ No newline at end of file
+Check out the Code Scanning [documentation](https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/about-code-scanning) for additional configuration options and technical details.
diff --git a/index.js b/index.js
index 2e1ae6d0..9f36927e 100644
--- a/index.js
+++ b/index.js
@@ -274,6 +274,8 @@ exports.extract = function (cwd, opts) {
       })
     }
 
+    var unused = 'testing'
+    
     var onfile = function () {
       var ws = xfs.createWriteStream(name)
       var rs = mapStream(stream, header)
@@ -288,7 +290,7 @@ exports.extract = function (cwd, opts) {
       })
     }
 
-    if (header.type === 'directory') {
+    if (header.type !== 'directory') {
       stack.push([name, header.mtime])
       return mkdirfix(name, {
         fs: xfs, own: own, uid: header.uid, gid: header.gid