During the development of a chrome extension, debugging was difficult because line number of minified JavaScript file is of no use without a source map. Previously, Honeybadger could only download the source map files which were public and our source maps were inside the .crx package which was inaccessible to honeybadger.

Recently, Honeybadger released a new feature to upload the source maps to Honeybadger. We have written a grunt plugin to upload the source maps to Honeybadger.

Here is how we can upload source map to Honeybadger.

First, install the grunt plugin.

npm install --save-dev grunt-honeybadger-sourcemaps

Configure the gruntfile.

  honeybadger_sourcemaps: {
      options: {
        appId: "xxxx",
        token: "xxxxxxxxxxxxxx",
        urlPrefix: "http://example.com/",
        revision: "<app version>"
        prepareUrlParam: function(fileSrc){
          // Here we can manipulate the filePath
          return filesrc.replace('built/', '');
      files: [{
        src: ['@path/to/**/*.map']
grunt.registerTask('upload_sourcemaps', ['honeybadger_sourcemaps']);

We can get the appId and token from Honeybadger project settings.

grunt upload_sourcemaps

Now, we can upload the source maps to Honeybadger and get better error stack trace.


Clone the following repo.

git clone https://github.com/bigbinary/grunt-honeybadger-sourcemaps

Replace appId and token in Gruntfile.js and run grunt test. It should upload the sample source maps to your project.