Rir

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

Rir means RequireDirectory.

How To Use

Installation (via npm)

$ npm install rir

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 rir to build the hash (rather than doing so manually) like so:

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

Options

You can pass an options hash to rir 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('rir'),
  whitelist = /onlyinclude.js$/,
  hash = requireDirectory(module, {include: whitelist});

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

var requireDirectory = require('rir'),
  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

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

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

Renaming Keys

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

No Recursion

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

Run Unit Tests

$ npm run lint
$ npm test

License

MIT License

Author

Troy Goode ([e-mail]) Owen Luke ([e-mail])