sift3 based on timoxley/sift install npm install [--save/--save-dev] sift3 component install ramitos/sift3 api var sift3 = require('sift3') sift3('same', 'same') //=> 0 sift3('', 'abcdef') //=> 6 sift3('program', 'programming') //=> 3 more examples in the tests license MIT