1.2.0 • Published 6 years ago

require-dir v1.2.0

Weekly downloads
212,818
License
MIT
Repository
github
Last release
6 years ago

Build Status npm version

requireDir()

Node helper to require() directories. The directory's files are examined, and each one that can be require()'d is require()'d and returned as part of a hash from that file's basename to its exported contents.

Example

Given this directory structure:

dir
+ a.js
+ b.json
+ c.coffee
+ d.txt

requireDir('./dir') will return the equivalent of:

{
  a: require('./dir/a.js'),
  b: require('./dir/b.json')
}

If CoffeeScript is registered via require('coffee-script/register'), c.coffee will also be returned. Any extension registered with node will work the same way without any additional configuration.

Installation

npm install require-dir

Note that this package is not requireDir — turns out that's already taken! ;)

Usage

Basic usage that examines only directories' immediate files:

var requireDir = require('require-dir');
var dir = requireDir('./path/to/dir');

You can optionally customize the behavior by passing an extra options object:

var dir = requireDir('./path/to/dir', { recurse: true });

Options

recurse: Whether to recursively require() subdirectories too. (node_modules within subdirectories will be ignored.) Default is false.

filter: Apply a filter on the filename before require-ing. For example, ignoring files prefixed with dev in a production environment:

requireDir('./dir', {
  filter: function (fullPath) {
    return process.env.NODE_ENV !== 'production' && !fullPath.match(/$dev/);
  }
})

mapKey: Apply a transform to the module base name after require-ing. For example, uppercasing any module names:

requireDir('./dir', {
  mapKey: function (value, baseName) {
    return baseName.toUpperCase();
  }
})

mapValue: Apply a transform to the value after require-ing. For example, uppercasing any text exported:

requireDir('./dir', {
  mapValue: function (value, baseName) {
    return typeof value === 'string' ? value.toUpperCase() : value;
  }
})

duplicates: By default, if multiple files share the same basename, only the highest priority one is require()'d and returned. (Priority is determined by the order of require.extensions keys, with directories taking precedence over files if recurse is true.) Specifying this option require()'s all files and returns full filename keys in addition to basename keys. Default is false.

In the example above, if there were also an a.json, the behavior would be the same by default, but specifying duplicates: true would yield:

{
  a: require('./dir/a.js'),
  'a.js': require('./dir/a.js'),
  'a.json': require('./dir/a.json'),
  b: require('./dir/b.json'),
  'b.json': require('./dir/b.json')
}

noCache: Prevent file caching. Could be useful using gulp.watch or other watch requiring refreshed file content Default is false.

requireDir('./dir', { noCache: true })

extensions: Array of extensions to look for instead of using require.extensions.

requireDir('./dir', { extensions: ['.js', '.json'] })

Tips

Make an index.js in a directory with this code to clean things up:

module.exports = require('require-dir')();   // defaults to '.'

And don't worry, the calling file is always ignored to prevent infinite loops.

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