Using fallback paths with RequireJS Optimizer

Question

My goal is to have a dependency, foo, to load from a CDN with a local fallback and to use RequireJS optimizer (r.js) to bundle and minify everything else.

require(['foo'], function (foo) { /*...*/ }) calls should work without errbacks - at least not everywhere that depends on foo, I'm cool with defining one errback in a shared location if it was possible but the global onError seems like it cannot be used in this manner.

The config that works without r.js:

require.config({
    // ...
    paths: {
        'foo': [
            '//path-to-cdn',
            'lib/local-path' // The fallback path
        ]
    }
]);

The optimize call in gulpfile:

requirejs.optimize(
{
    mainConfigFile: 'path-to-config',
    name: 'path-to-main',
    out: 'path-to-dist'
}

The output after I changed the foo's path to an array (instead of a single string):

Error: paths fallback not supported in optimizer.

I've tried supplying paths as an override to the optimize call as recommended without success:

requirejs.optimize(
{
    // ...
    paths: {
        'foo': [
            'https://path-to-cdn',
            'lib/local-path' // The fallback path
        ]
    }
}

This sounds like a basic requirement to me, can't I specify a fallback path for a module using RequireJS and its optimizer?

Using fallback paths with RequireJS Optimizer

0 Answers0