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[lit-labs/virtualizer] Add documentation for the keyFunction property #1322

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imlutr opened this issue Apr 8, 2024 · 0 comments · May be fixed by lit/lit#4692
Open

[lit-labs/virtualizer] Add documentation for the keyFunction property #1322

imlutr opened this issue Apr 8, 2024 · 0 comments · May be fixed by lit/lit#4692

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@imlutr
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imlutr commented Apr 8, 2024

Hi! I was using the Lit virtualizer and noticed it was kind of slow. I dug in the Performance tab and I noticed that it basically uses repeat() for some of its work. Then I wondered about using keyFunction, to optimize the performance and sure enough, the library offers such functionality - and it seems to make a fair difference.

It'd be great if this was mentioned in the README for the virtualizer 😄.
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[lit-labs/virtualizer] add keyFunction docs and update jsdocs Garbee/lit
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@imlutr