Add the Karma test runner and standardise settings in your project with Sublime Text.

foo.sublime-project

{
  "folders": [{
    "follow_symlinks": true,
    "path": "."
  }],
  "settings": {
    "detect_indentation": false,
    "ensure_newline_at_eof_on_save": true,
    "tab_size": 2,
    "file_exclude_patterns": [
      "*.sublime-project",
      "*.sublime-workspace",
      "*.min.*"
    ],
    "folder_exclude_patterns": [
      "node_modules",
      "reports",
      ".git",
      ".svn"
    ],
    "rulers": [
      100
    ],
    "translate_tabs_to_spaces": true,
    "trim_automatic_white_space": true,
    "trim_trailing_white_space_on_save": true
  },
  "build_systems": [{
    "name": "test",
    "path": "$HOME/.nvm/v0.10.26/bin:$PATH",
    "cmd": [
      "node_modules/karma/bin/karma",
      "start",
      "test/config/karma.conf.js",
      "--no-colors",
      "--single-run",
      "--log-level",
      "disable",
      "--reporters",
      "dots"
    ],
    "selector": "source.js",
    "working_dir": "$project_path"
  }]
}

1. Save this file in the root of your project.
2. Open the project using that file, rather than opening Sublime Text at that directory.
3. Command+B will run Karma.
4. You can optionally set Karma to run on every save.

What does this look like?!

The Karma Build? It shows up in your Sublime Console @mmahalwy