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Nlint does full project syntax linting. It runs your js/json/css files through linters to find errors that might not reveal themselves in testing.

  • Async, multi process for faster reading and linting
  • JSHint: JavaScript code quality tool
  • JSCS: JavaScript code style checker
  • CSSLint: Automated linting of Cascading Stylesheets
  • JSONLint: JSON Linter that allows comments

NPM version Build Status Code Climate


$ npm install nlint


When installed globally npm install -g nlint, the nlint command may be used

$ nlint /path/to/dir/

To incorporate nlint into your build process, just trigger the render method

require( 'nlint' ).render( '/path/to/root/' );


  • use: List of linters to use. Comma separated list, or array of linters. Defaults to all linters.
  • fork: Number of forked processes for use in linting. Will speed up large projects. Defaults to the number of cpus on the system.
  • ignore: List of file paths to ignore. Should be an array of string paths.
  • linters: Object of options that are passed to the linter function
  • reset: Resets all previous options up to that directory (including global defaults)

Here is a sample nlint file that can be used (commented)

// .nlint.json 
    // Use all linters 
    "use": "*",
    // Ignore the .git generated directory because nothing good can come of it 
    // Also ignore node_modules as third-party modules might not pass your standards 
    "ignore": [
    // Tell jshint that the JavaScript files are for a nodejs enviornment 
    "linters": {
        "jshint": {
            "node": true


Nlint files define out options for the directory it's in, and each subdirectory following. Each following nlint file adds/overwrites the previous nlint file in the parent directories.

  • .nlint, .nlint.json, .nlint.json5: JSON files mimicking options for that directory
  • .nlint.js: module.exports is used as the options object for that directory
# Sample directory setup 

When nlint is traversing your project, every file and directory that is not the /test directory inherits it's settings from the root /.nlint.json file.

When nlint is traversing your test directory, the settings used is the equivalent of the following

settings = extend(
    require( "/Users/me/my-project/.nlint.json" ),
    require( "/Users/me/my-project/test/.nlint.json" )


The MIT License
Copyright (c) 2012-2014 Corey Hart
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.