My development config (in "index.html" file) for RequireJS is:

<script src="require-2.1.5.min.js"></script>
<script>
    require.config({
        baseUrl: 'js',
        paths: {
            angular: 'libraries/angular-1.1.5.min',
            jquery: 'libraries/jquery-2.0.0.min',
            underscore: 'libraries/underscore-1.4.4.min',
            ...
            zeroclipboard: 'plugins/zeroclipboard-1.0.7.min',
            tablesorter: 'plugins/jquery.tablesorter-2.9.1.min',
            ...
        },
        shim: {
            'angular': {
                exports: 'angular'
            },
            'underscore': {
                exports: '_'
            }
        },
        packages: [
            {
                name: 'index',
                location: 'app/index',
                main: 'main'
            }
        ]
    });

    require(['index']);
</script>

But on production I have only 2 concatenated files for libraries and plugins:

js/libraries.js // all jQuery, AngularJS, RequireJS, Underscore and other libraries concatenated
js/plugins.js // all plugins (already an AMD modules, no need for "shim" config) concatenated

So, how do I write my config "paths" now? I don't have any 'libraries/angular-1.1.5.min.js' and other paths.

My solution is to write:

    paths: {
        angular: 'libraries',
        underscore: 'libraries'
    }

I associate AngularJS and Underscore to 'libraries.js' file and everything works perfect. (No need for jQuery and all plugins — they are already an AMD modules).

But is that a right way to write paths? My solution seems to me kinda dirty workaround, not the best practices solution.

My r.js build process:

({
baseUrl: 'scripts',
paths: {
    jquery: 'jquery-2.0.0.min',
    ...
    tablesorter: 'jquery.tablesorter-2.0.5.min',
    zeroclipboard: 'zeroclipboard-1.0.7.min'
},
name: 'foo/main',
exclude: [
    'angular',
    'jquery',
    ...
    'tablesorter',
    'zeroclipboard'
],
optimize: 'uglify',
out: 'production/js/foo.js'
})

UPD 1:

What I want:

www.mysite/about.html:

<script src="js/libraries.js"></script><-- jQuery (already AMD), AngularJS (not AMD), RequireJS, Underscore (not AMD) and other libraries already here, only 1 http request needed //-->
<script src="js/plugins.js"></script><-- all AMD //-->
<script>
    require.config({
        baseUrl: 'js',
        paths: {
            angular: WHAT I NEED TO WRITE HERE?,
            underscore: WHAT I NEED TO WRITE HERE?
        },
        shim: {
            'angular': {
                exports: 'angular'
            },
            'underscore': {
                exports: '_'
            }
        },
        packages: [
            {
                name: 'about',
                location: 'js',
                main: 'about'
            }
        ]
    });

    require(['about']); // will load "js/about.js"
</script>

UPD 2:

Ok, it is clear about "priority", so, I don't need for first and second «script» tags (but I need to separate "Require.js" from "libraries.js") — RequireJS will load them automatically. But what should be done with non-AMD libraries in "libraries.js" file?

AngularJS and UnderscoreJS are non-AMD modules, that is why I have to use "shim", right? But to make "shim" work, I need to use "paths" also, so "shim" can locate shimmed modules, right? But I still have only 1 file — "libraries.js" and I cannot write it in "path" option… Just really stuck…

My development config (in "index.html" file) for RequireJS is:

<script src="require-2.1.5.min.js"></script>
<script>
    require.config({
        baseUrl: 'js',
        paths: {
            angular: 'libraries/angular-1.1.5.min',
            jquery: 'libraries/jquery-2.0.0.min',
            underscore: 'libraries/underscore-1.4.4.min',
            ...
            zeroclipboard: 'plugins/zeroclipboard-1.0.7.min',
            tablesorter: 'plugins/jquery.tablesorter-2.9.1.min',
            ...
        },
        shim: {
            'angular': {
                exports: 'angular'
            },
            'underscore': {
                exports: '_'
            }
        },
        packages: [
            {
                name: 'index',
                location: 'app/index',
                main: 'main'
            }
        ]
    });

    require(['index']);
</script>

But on production I have only 2 concatenated files for libraries and plugins:

js/libraries.js // all jQuery, AngularJS, RequireJS, Underscore and other libraries concatenated
js/plugins.js // all plugins (already an AMD modules, no need for "shim" config) concatenated

So, how do I write my config "paths" now? I don't have any 'libraries/angular-1.1.5.min.js' and other paths.

My solution is to write:

    paths: {
        angular: 'libraries',
        underscore: 'libraries'
    }

I associate AngularJS and Underscore to 'libraries.js' file and everything works perfect. (No need for jQuery and all plugins — they are already an AMD modules).

But is that a right way to write paths? My solution seems to me kinda dirty workaround, not the best practices solution.

My r.js build process:

({
baseUrl: 'scripts',
paths: {
    jquery: 'jquery-2.0.0.min',
    ...
    tablesorter: 'jquery.tablesorter-2.0.5.min',
    zeroclipboard: 'zeroclipboard-1.0.7.min'
},
name: 'foo/main',
exclude: [
    'angular',
    'jquery',
    ...
    'tablesorter',
    'zeroclipboard'
],
optimize: 'uglify',
out: 'production/js/foo.js'
})

UPD 1:

What I want:

www.mysite./about.html:

<script src="js/libraries.js"></script><-- jQuery (already AMD), AngularJS (not AMD), RequireJS, Underscore (not AMD) and other libraries already here, only 1 http request needed //-->
<script src="js/plugins.js"></script><-- all AMD //-->
<script>
    require.config({
        baseUrl: 'js',
        paths: {
            angular: WHAT I NEED TO WRITE HERE?,
            underscore: WHAT I NEED TO WRITE HERE?
        },
        shim: {
            'angular': {
                exports: 'angular'
            },
            'underscore': {
                exports: '_'
            }
        },
        packages: [
            {
                name: 'about',
                location: 'js',
                main: 'about'
            }
        ]
    });

    require(['about']); // will load "js/about.js"
</script>

UPD 2:

Ok, it is clear about "priority", so, I don't need for first and second «script» tags (but I need to separate "Require.js" from "libraries.js") — RequireJS will load them automatically. But what should be done with non-AMD libraries in "libraries.js" file?

AngularJS and UnderscoreJS are non-AMD modules, that is why I have to use "shim", right? But to make "shim" work, I need to use "paths" also, so "shim" can locate shimmed modules, right? But I still have only 1 file — "libraries.js" and I cannot write it in "path" option… Just really stuck…

• javascript
• requirejs

• You should not have to add in those additional script tags, require.js can, and should, load those for you. Is my answer below about the priority option unclear ? – Willem D'Haeseleer Commented Jun 2, 2013 at 19:11
• It is all great with your answer, I just made an update before reading your update :) – artuska Commented Jun 2, 2013 at 19:14

2 Answers 2

In order to have mon library code preloaded you should use the priority config option. you could put something like this in your foo/main.js file

require.config({
    priority: ["libraries", "plugins"]
});

And then your build file could look like this. The libraries and plugins file should contains a define statement that define all dependencies that are considered general / download once.

({
    baseUrl: 'scripts',
    paths: {
        jquery: 'jquery-2.0.0.min',
        ...
        tablesorter: 'jquery.tablesorter-2.0.5.min',
        zeroclipboard: 'zeroclipboard-1.0.7.min'
    },
    modules: [
        {
            name: 'foo/main'
            excludes: ...
        },
        {
            name: 'libraries'
        },
        {
            name: 'plugins'
        }
    ],
    optimize: 'uglify',
    out: 'production/js/foo.js'
})

You should use same configuration for both environments. And this configuration that you have should be in the external file. When you optimize it using r.j, all modules already in that single file so RequireJS will just use them without loading. Seems like you need to tune your build process.

Checkout my recent blog post about it.