bower-requirejs

bower-requirejs

Automagically wire-up installed Bower components into your RequireJS config

Install

• Install with npm: npm install --save bower-requirejs

Example usage

./node_modules/.bin/bower-requirejs -c path/to/config -e underscore -e jquery

Options

-h, --help           # Print options and usage'
-v, --version        # Print the version number'
-c, --config         # Path to your RequireJS config file'
-e, --exclude        # Name of a dependency to be excluded from the process'
-b, --base-url       # Path which all dependencies will be relative to'
-t, --transitive     # Process transitive dependencies'

Things to remember

Config file

If you do not already have a config.js file at the location specified by the --config option then one will be generated for you. A basic config.js file looks like this:

requirejs.config({
  shim: {},
  paths: {}
});

You still need to create a path for your js files. This tool will only create paths for third party libraries specified in bower.json.

requirejs.config({
  shim: {},
  paths: {
    myComponent: 'js/myComponent.js'  // make sure to add your components!
  }
});

The tool does not overwrite the config file, it just adds additional paths to it. So paths you add will be preserved. Keep in mind that if you change or remove one of your Bower dependencies after you've run the task, that path will still exist in the config file and you'll need to manually remove it.

Transitive option

If the transitive option is set to true, then transitive dependencies will be also added to the require config.

For example, say we explicitly have an entry in our bower config for module myTotallyCoolModule, which depends on jQuery and underscore. If the transitive option is set to true, there will be config entries for myTotallyCoolModule, jQuery, and underscore. Otherwise, if the transitive option is set to false, there will only be a config entry for myTotallyCoolModule.

Each transitive dependency is only included once, even if the dependency is used multiple times.

RequireJS component

Although RequireJS does not provide a bower.json file, a path to require.js will still be created in your rjsConfig file. The path's name will be requirejs. If you are optimizing your scripts with r.js you can use this path to make sure RequireJS is included in your bundle.

Programmatic API

bowerRequireJS(options, callback)

• options — An options object containing optional config, baseUrl, and exclude options. The config option specifies an output file to which the generated require.js config will be written. If a require.js config file already exists at this location, the generated config will be merged into this file.
• callback — A callback to execute when the task is finished. This callback will receive an object that the contains require.js configuration generated from bower components. Note that this includes only config elements representing bower components.

You can use bower-requirejs directly in your app if you prefer to not rely on the binary.

var bowerRequireJS = require('bower-requirejs');

var options = {
  config: 'scripts/config.js',
  exclude: ['underscore', 'jquery'],
  transitive: true
};

bowerRequireJS(options, function (rjsConfigFromBower) {
  // all done!
});

parse(pkg, name, baseUrl)

• pkg — A package object returned from bower list
• name — The name of the package
• baseUrl — A baseUrl to use when generating the path

If you would like to just receive a paths object you can do so with the parse module. If your package does not contain a bower.json file, or if the bower.json does not contain a main attribute then the parse module will try to use the primary module to find a primary, top-level js file.

var bower = require('bower');
var _ = require('lodash');
var parse = require('bower-requirejs/lib/parse');

var baseUrl = './';

bower.commands.list()
  .on('end', function (data) {
    _.forOwn(data.dependencies, function (pkg, name) {
      if (name == 'jquery') {
        var pathObj = parse(pkg, name, baseUrl);
      }
    });
  });

primary(name, canonicalDir, opts)

• name — The package name
• canonicalDir — The canonicalDir for the package, either returned by bower list or passed in manually
• opts — Use the opts.extraSearchDirs to specify other dirs to search, relative to the canonicalDir. By default this is ['dist'].

If you just want to look for the js file in a bower component's top-level directory or 'dist' directory you can use the primary module. The primary module will exclude gruntfiles and min.js files. It will also check if package.json specifies a main js file.

var primary = require('bower-requirejs/lib/primary');

var name = 'backbone';
var dep = { canonicalDir: './bower_components/backbone' };

var primaryJS = primary(name, dep);
// returns backbone.js

buildConfig(bowerDependencyGraph, options)

• bowerDependencyGraph — A bower dependency graph, as returned by a call to bower.commands.list
• options — An object containing baseUrl, exclude, and transitive options, as described above.

This module can be used to generate a requireJs config elements from bower components.

var buildConfig = require('bower-requirejs/lib/build-config');

bower.commands.list({})
.on('end', function (dependencyGraph) {
  var configElementsFromBower = buildConfig(dependencyGraph, {
    baseUrl : '/some/base/url',
    exclude: ['underscore', 'jquery'],
    transitive: true
  });
});

Credit

Sindre Sorhus (creator)	Rob Dodson (maintainer)

License

BSD license and copyright Google