feat: make undefined more strict #1751

Job	Run time
test (ubuntu-latest)	1m 45s
test (macos-latest)	3m 52s
test (windows-latest)	10m 44s
Build x86_64-unknown-linux-musl	7m 33s
Build aarch64-unknown-linux-musl	8m 5s
Build powerpc64le-unknown-linux-gnu	8m 10s
Build x86_64-apple-darwin	14m 27s
Build aarch64-apple-darwin	2m 58s
Build x86_64-pc-windows-gnu	17m 19s
Build x86_64-pc-windows-msvc	14m 20s
Post-process	0s
	1h 29m 13s

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