gulp-jscoverage 
JSCoverage instrumentation plugin for gulp
Usage
var gulp = require('gulp'),
jsc = require('gulp-coverage')
gulp.task('jsc', function () {
gulp.src('./src.js')
.pipe(jsc())
.pipe(gulp.dest('./')) // default file name: src-cov.js
})API
jsc([name])
- name: the output file name.
License
MIT