TAP, the Test Anything Protocol, is a simple text-based interface between testing modules in a test harness. TAP started life as part of the test harness for Perl but now has implementations in C/C++, Python, PHP, Perl and probably others by the time you read this.
Install
$ npm install --save-dev eslint-tap
Usage
ESLint CLI
$ eslint --format=node_modules/eslint-tap file.js
grunt-eslint
grunt; grunt;grunt;
License
MIT © Sindre Sorhus