json with constructor property now caches correctly
json generation with object prototype property now works correctly
tree shaking json array when accessing length property now works correctly
fix incorrect call context when calling properties on imports from CommonJS modules
fixes#12615
to keep track of runtimes, used exports depending on runtime
modules can have different hashes and generated code depending on runtime
chunks are only considered as equal for MergeDuplicateChunks and SplitChunks when exports used in contained modules are equal
added `optimization.usedExports: "global"` to opt-out from used exports analysis per runtime
added `splitChunks.usedExports` and `splitChunks.cacheGroups[x].usedExports` to enable/disable used exports comparing for modules
`splitChunks.usedExports` defaults to `true` in production