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A JSHint loader module for webpack. Runs JSHint on JavaScript files in a bundle at build-time.


This module requires a minimum of Node v6.9.0 and Webpack v4.0.0.

Getting Started

To begin, you'll need to install jshint-loader:

$ npm install jshint-loader --save-dev

Then add the loader to your webpack config. For example:

// webpack.config.js
module.exports = {
  module: {
    rules: [
        test: /.js/,
        enforce: 'pre',
        exclude: /node_modules/,
        use: [
            loader: `jshint-loader`,
            options: {...options}

And run webpack via your preferred method.


All valid JSHint options are valid on this object, in addition to the custom loader options listed below:

delete options.; delete options.; delete options.;


Type: Boolean Default: undefined

Instructs the loader to emit all JSHint warnings and errors as webpack errors.


Type: Boolean Default: undefined

Instructs the loader to cause the webpack build to fail on all JSHint warnings and errors.


Type: Function Default: undefined

A function used to format and emit JSHint warnings and errors.

Custom Reporter

By default, jshint-loader will provide a default reporter.

However, if you prefer a custom reporter, pass a function under the reporter property in jshint options. (see usage above)

The reporter function will be passed an array of errors/warnings produced by JSHint with the following structure:

    id:        [string, usually '(error)'],
    code:      [string, error/warning code],
    reason:    [string, error/warning message],
    evidence:  [string, a piece of code that generated this error]
    line:      [number]
    character: [number]
    scope:     [string, message scope;
                usually '(main)' unless the code was eval'ed]

    [+ a few other legacy fields that you don't need to worry about.]
// ...
// more errors/warnings

The reporter function will be excuted with the loader context as this. You may emit messages using this.emitWarning(...) or this.emitError(...). See webpack docs on loader context.

Note: JSHint reporters are not compatible with JSHint-loader! This is due to the fact that reporter input is only processed from one file; not multiple files. Error reporting in this manner differs from traditional reporters for JSHint since the loader plugin (i.e. JSHint-loader) is executed for each source file; and thus the reporter is executed for each file.

The output in webpack CLI will usually be:

WARNING in ./path/to/file.js
<reporter output>



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