grunt-jscoverage

Grunt task for jscoverage; which will parse your source code and generate an instrumented version allowing testing tools to generate code coverage reports.

Install

Install npm package

npm install grunt-jscoverage --save-dev

Add this line to your project's Gruntfile:

grunt.loadNpmTasks("grunt-jscoverage");

Configure

grunt.initConfig({
  jscoverage: {
    src: {
      expand: true,
      cwd: 'src/',
      src: ['**/*.js'],
      dest: 'src-cov/',
      ext: '.js',
    },
    otherstuff: {
      expand: true,
      cwd: 'otherstuff/',
      src: ['**/*.js'],
      dest: 'otherstuff-cov/',
      ext: '.js',
    },
    options: {
      // custom options
    }
  }
});

See Grunt docs for detailed explanation.
Options will be passed to jscoverage as is. Unfortunately, jscoverage doesn't provide any documentation about its programmatic API, so take a look at function processFile() in its file index.js for details.

Run

grunt jscoverage