Fix a regression that leads to larger bundle size #2006
Merged
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downlevelIteration
adds support for iteration protocol for es5 target, but it adds extra codes for simple array iteration.Since it is only required by database, I am only setting it in database's tsconfig.json instead of in the global tsconfig.json to prevent the bloat.
base64
was defined as an object literal before. When we enabled typescriptstrict
flag, it was changed to a class. Class that are compiled down to es5 can't be treeshaked in rollup, so base64 is included in all packages that depend on@firebase/util
though they don't use base64. This changes base64 back to object literal with type safety.