Package Exports

require-directory

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (require-directory) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

require-directory

Recursively iterates over specified directory, require()'ing each file, and returning a nested hash structure containing those modules.

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How To Use

Installation (via npm)

$ npm install require-directory

Usage

A common pattern in node.js is to include an index file which creates a hash of the files in its current directory. Given a directory structure like so:

app.js
routes/
- index.js
- home.js
- auth/
  - login.js
  - logout.js
  - register.js

routes/index.js uses require-directory to build the hash (rather than doing so manually) like so:

var requireDirectory = require('require-directory');
module.exports = requireDirectory(module);

app.js references routes/index.js like any other module, but it now has a hash/tree of the exports from the ./routes/ directory:

var routes = require('./routes');

// snip

app.get('/', routes.home);
app.get('/register', routes.auth.register);
app.get('/login', routes.auth.login);
app.get('/logout', routes.auth.logout);

The routes variable above is the equivalent of this:

var routes = {
  home: require('routes/home.js'),
  auth: {
    login: require('routes/auth/login.js'),
    logout: require('routes/auth/logout.js'),
    register: require('routes/auth/register.js')
  }
};

Note that routes.index will be undefined as you would hope.

Specifying Another Directory

You can specify which directory you want to build a tree of (if it isn't the current directory for whatever reason) by passing it as the second parameter. Not specifying the path (requireDirectory(module)) is the equivelant of requireDirectory(module, __dirname):

var requireDirectory = require('require-directory');
module.exports = requireDirectory(module, './some/subdirectory');

For example, in the example in the Usage section we could have avoided creating routes/index.js and instead changed the first lines of app.js to:

var requireDirectory = require('require-directory');
var routes = requireDirectory(module, './routes');

Options

You can pass an options hash to require-directory as the 2nd parameter (or 3rd if you're passing the path to another directory as the 2nd parameter already). Here are the available options:

Whitelisting

Whitelisting (either via RegExp or function) allows you to specify that only certain files be loaded.

var requireDirectory = require('require-directory'),
  whitelist = /onlyinclude.js$/,
  hash = requireDirectory(module, {include: whitelist});

var requireDirectory = require('require-directory'),
  check = function(path){
    if(/onlyinclude.js$/.test(path)){
      return true; // don't include
    }else{
      return false; // go ahead and include
    }
  },
  hash = requireDirectory(module, {include: check});

Blacklisting

Blacklisting (either via RegExp or function) allows you to specify that all but certain files should be loaded.

var requireDirectory = require('require-directory'),
  blacklist = /dontinclude\.js$/,
  hash = requireDirectory(module, {exclude: blacklist});

var requireDirectory = require('require-directory'),
  check = function(path){
    if(/dontinclude\.js$/.test(path)){
      return false; // don't include
    }else{
      return true; // go ahead and include
    }
  },
  hash = requireDirectory(module, {exclude: check});

Visiting Objects As They're Loaded

require-directory takes a function as the visit option that will be called for each module that is added to module.exports.

var requireDirectory = require('require-directory'),
  visitor = function(obj) {
    console.log(obj); // will be called for every module that is loaded
  },
  hash = requireDirectory(module, {visit: visitor});

The visitor can also transform the objects by returning a value:

var requireDirectory = require('require-directory'),
  visitor = function(obj) {
    return obj(new Date());
  },
  hash = requireDirectory(module, {visit: visitor});

Renaming Keys

var requireDirectory = require('require-directory'),
  renamer = function(name) {
    return name.toUpperCase();
  },
  hash = requireDirectory(module, {rename: renamer});

No Recursion

var requireDirectory = require('require-directory'),
  hash = requireDirectory(module, {recurse: false});

Run Unit Tests

$ npm run lint
$ npm test

License

MIT License

Author

Troy Goode (troygoode@gmail.com)