require.cache() does not work as expected

[kitsonk]

Bug

When passing modules via the require.cache() API, it does not work as expected.

Code

require.cache({
    'some/module/mid': () => { define('some/module/mid', [ 'dependency' ], (dependency) => { /* module */ }
});

require([ 'some/module/mid' ], (someModule) => { /* stuff */ };

Expected behavior:

This should run without issue.

Actual behavior:

The loader will report it cannot load some/module/mid. In order to make it available, you have to
do something like this:

require.cache({
    'some/module/mid': () => { define('some/module/mid', [ 'dependency' ], (dependency) => { /* module */ }
});
require.cache({});

require([ 'some/module/mid' ], (someModule) => { /* stuff */ };

Which will cause the loader to actually consume the provided cached modules.

I suspect this is mainly because there are not tests around the .cache() API that this is why this is undetected.