When available, use resolve data already present in most modules

[markjm]

All/most NormalModules carry their resolveRequest information along with them from the initial resolving of the module. When available, we can skip all our processing and fs access for those modules.

Doing so broke the current abstraction of a ModuleFileIterator, so I changed it to be an "inner module" iterator to more match what its doing.

You can see the typedef here
https://github.com/markjm/webpack/blob/16784692d3c3a8985327dd9a5665bf319d8aec1b/types.d.ts#L440-L448

[markjm]

@xz64 these changes should greatly reduce fs calls for this plugin in all typical cases

[xz64]

@markjm Thanks for your contribution!

[markjm]

Thanks - mind cutting a new release?

[xz64]

@markjm This is published in v4.0.1 now