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♻️ Remove Notice from JS and Markdown (#35717)
♻️ Move files into #core, #utils to enable tsc typechecking (#36277)
❄️ Unskip some tests that no longer fail (#39329)
Lint remaining static enums in src (#36821)
🐛 Use timeOrigin for getFirstVisibleTime when page starts visible (#36273)
Validator rollup 20210819 (#35748)