wrapper-webpack-plugin
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Implement a Source cache to avoid over-eager emitting
This change implements a cache for Source
s generated by this plugin so that on subsequent builds (i.e. incremental builds) we can re-use the same Source
if the content hasn't changed.
This improves performance with Webpack's futureEmitAssets
mode, where there is a cache based on Source referential identity that determines whether an asset should be re-emitted.
Fixes #7