npm install grunt-template-jasmine-istanbul --save-dev

Type: String Mandatory.

The file path where to store the coverage.json.

Type: String Mandatory.

The directory path where to store the coverage report.

Type: String Object Default: jasmine's default template

The template to mix-in coverage.

Type: Object Default: undefined

The options to pass to the mixed-in template.

Have a look at this example.

// Example configuration
grunt.initConfig({
	jasmine: {
		coverage: ['src/main/js/*.js'],
		options: {
			specs: ['src/test/js/*.js'],
			template: require('grunt-template-jasmine-istanbul'),
			templateOptions: {
				coverage: 'bin/coverage/coverage.json',
				report: 'bin/coverage',
			}
		}
	}
}