Download RequireJS

• Latest Release§ 1
• require.js§ 1.1
• r.js: Optimizer and Node/Rhino/xpcshell adapter§ 1.2
• Plugins§ 2
• text§ 2.1
• domReady§ 2.2
• cs (CoffeeScript)§ 2.3
• i18n§ 2.4
• Release Notes§ 3

Latest Release§ 1

If you want 1.0: Link to 1.0.

Plugins§ 2

These are useful loader plugins that have the same license terms as require.js itself. Download the plugin file and place it as a sibling to your "data-main" main.js script.

Release Notes§ 3

2.1.10

Mainly a maintenance release, and improves some cases when reusing code that was installed via npm. There are two new config options for the loader too:

• nodeIdCompat: some node modules installed by npm use module IDs like example.js and example interchangeably. Setting this config option to true will accommodate that style.
• bundles: a more compact way to list a set of module IDs belonging to a bundle ID, and supports loader plugin resource IDs.

And for the optimizer, the mainConfigFile option can now take an array of file paths that have configs in them. Later values take precedent over earlier values.

Full list of changes:

• Fixed require.js issues
• Fixed r.js optimizer issues

2.1.9

Full list of changes:

Mainly a maintenance release to fix bugs. There is a new skipDataMain option in require.js to avoid the data-main work, which can be useful for browser extensions that should let the main content page's requirejs handle the data-main.

• Fixed require.js issues
• Fixed r.js optimizer issues

2.1.8

A small release to fix an optimizer issue with parsing config calls for modifications.

2.1.7

The main changes for this release:

• For xpcshell, the optimizer uses the built in Reflect parser API instead of Esprima. xpcshell, on Linux and Windows in particular, has a constrained stack, and normal Esprima use was not possible. To accommodate this change, some of the parsing approaches used internally by r.js moved away from token scanning to tree walking. The only visible output change you may see is different use of space characters in transformed code.
• The source map support was updated to use the new //# syntax as specified by the spec. This change is still making its way through the browsers, so if you need source map or sourceURL support with 2.1.7, you may need to use Firefox Aurora or Chrome Canary channels. The browser support levels should get better in around six weeks time.

Full list of changes:

• Fixed require.js issues
• Fixed r.js optimizer issues

2.1.6

Source map support has been expanded. Previously, it was just supported for going from minified, bundled code to the unminified, bundled code. If optimize: 'uglify2' is used, it will now go back to the separated, unbundled files.

Source map support is still considered experimental though, so you may find bugs. If you find one, file an r.js issue, ideally with a test case.

Full list of changes:

• Fixed require.js issues
• Fixed r.js optimizer issues

2.1.5

Biggest change is support for running the optimizer and loading AMD modules in xpcshell. Other than that, just a maintenance release.

Full list of changes:

• Fixed require.js issues
• Fixed r.js optimizer issues

2.1.4

Quick release for a bug that slipped in the 2.1.3 release in the r.js optimizer. So even though require.js now has a 2.1.4 version, it is the same as 2.1.3, and the optimizer is the same as 2.1.3 except for this one fix:

• Bug 356: cssPrefix normalization always needs to happen

Without this fix, in some cases 2.1.3 would insert "undefined" in some optimized CSS files, making them unusable.

2.1.3

Maintenance release. A change that may be noticeable:

require.toUrl() now correctly generates URLs for string values passed to it without an extension. Previous versions of toUrl() would append a ".js" extension automatically. If you relied on that behavior, when you update to 2.1.3, then you may need to do a code change to append the .js extension yourself:

require.toUrl('some/value') + '.js'

The text plugin has been updated to also work with this change, so if you want to generate non-extension paths for text resources, be sure to upgrade to to the 2.0.4 version of text.js.

Normal use of toUrl with a value that has an extension continues to work the same.

Full list of changes:

• Fixed require.js issues
• Fixed r.js optimizer issues

2.1.2

The big changes for this release are in the optimizer:

• The optimizer can now run in the browser, to enable web-based custom builds of your library.
• "uglify2" is an allowed "optimize" value now, using UglifyJS 2.1.11.
• Experimental support for source maps.
• The optimizer runs faster now, and has some speed options.

Full list of changes:

• Fixed require.js issues
• Fixed r.js optimizer issues

2.1.1

• Fixed require.js issues
• Fixed r.js optimizer issues

2.1.0

See the Upgrading to 2.1 page.

2.0.6

The main focus of this release was cleaning up some rough edges after switching to esprima for all module parsing. Most notably, findNestedDependencies should work correctly again. The bundled UglifyJS was updated to 1.3.3 too.

Complete list of fixes:

• Fixed require.js issues
• Fixed r.js optimizer issues

2.0.5

Probably the most notable changes:

• require.js: fix for a 'use strict' issue in Safari 6: should only show up in certain non-optimized scenarios.
• r.js optimizer: changed over to esprima for all dependency tracing. This set the stage for allowing some forms of JavaScript 1.8 to be optimized, with the help of some regexps.

Complete list of fixes:

• Fixed require.js issues
• Fixed r.js optimizer issues

2.0.4

Same as 2.0.3, but rolled back a change in r.js that caused a logging error.

• Fixed r.js logging rollback

2.0.3

• Fixed require.js issues
• Fixed r.js optimizer issues

2.0.2

• Fixed require.js issues
• Fixed r.js optimizer issues

2.0.1

• Fixed require.js issues
• Fixed r.js optimizer issues

2.0.0

• 2.0 changes
• Fixed require.js issues
• Fixed r.js optimizer issues

1.0.8

Small bug fixes to:

• require.js
• r.js optimizer

1.0.7

Small bug fixes to:

• require.js
• r.js optimizer

1.0.6

Main purpose of the release is to fix a regression in 1.0.5 where the optimizer's "dir" config option was not applied correctly when passed on the command line.

The other notable change: the optimizer now supports onBuildRead and onBuildWrite functions that are called when JS modules are read or written for an optimized build layer. This allows doing some regexp work to modify their contents.

Small bug fixes to:

• require.js
• r.js optimizer

1.0.5

Small bug fixes to:

• require.js
• r.js optimizer

1.0.4

Small bug fixes to:

• require.js
• r.js optimizer

1.0.3

Small bug fixes to:

• require.js
• r.js optimizer

1.0.2

Small bug fixes to:

• require.js
• r.js optimizer

1.0.1

Just small bug fixes related to:

• allowing full URLs for simplified CommonJS wrapped modules
• AST parsing of dependencies for modules that use a variable for the factory function
• catching more cases that should have the "namespace" optimizer option applied

Detailed list of changes for require.js and the r.js optimizer:

• require.js 1.0.1 changes
• r.js 1.0.1 changes