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`ArrayTail` doesn't work when mixed with optional elements #978

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ferferga opened this issue Nov 7, 2024 · 0 comments · May be fixed by #977

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bug

ferferga commented Nov 7, 2024 •

edited by polar-sh bot

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Bug description

This type:

type Test = ArrayTail<[foo?: string | undefined, bar?: number | undefined]>;

Is resolved as []

Repro

https://www.typescriptlang.org/play/?#code/JYWwDg9gTgLgBDAnmApnA3nAglKBDRAFT2ABs4BfOAMyghDgHIlUBaalAZxkYG4BYAFBDqAVwB2AYxjAI4hFxgAKahAgB+AFxxuUYOIDmAGjgAjPFC1xxokKZRQAlBiEBIKChiio4gYIpCQgD0QXCEABbAnHAenBCkAG5cCBBwANqqGtq6+gZwAD5wEgAmKNT6KMUm5pbaNnYOBUXipeXilQC6QixoAGIS0rLiAAoWeCDRALxwo-ggng6cADw9ENQK3AB8fsGhEVE64RCipMUxXPFJKek1VvX2UE0lZRXFXYI9YcgovYrEZHBpjh8EQSKQlv0pDI5LNxpxtoFBCEwpFop9ygAPZIwcJoMAeBKyUTRKKcUQobrfOC9YBY4r-cEAGU2gLgjLgKAxMBQLWiHjwxTkpEQ6Q6cHUbLg2nZnO5vPOAqFIrSEgA1uIIAB3cTqEwAOgN+g4j0ZDLFEtNYKlbJ2SNCACULolknhomlbnVbA8ni0Xu03nBJNAPNJhZTUHAAOrAHE0ukM1lxyoMiEDaEjMYTbZAA

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The text was updated successfully, but these errors were encountered:

ferferga added the bug label

ferferga linked a pull request

that will close this issue

fix(ArrayTail): not working with optional parameters #977

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