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Exclude value from array typescript type

Husnain Syed answered on May 28, 2022 Popularity 4/10 Helpfulness 4/10

answer Exclude value from array typescript type

Exclude value from array typescript type

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// Exclude Array
type Equal<T, K> = K extends T ? true : false;
type ExcludeArray<T extends any[], K, J extends any[] = []> = T extends [infer first, ...infer Rest]
	? Equal<first, K> extends false
		? ExcludeArray<Rest, K, [...J, first]>
		: ExcludeArray<Rest, K, [...J]>
	: J;
type excludeArray = ExcludeArray<['a', 'b', 'c', 'd'], 'c'>; //['a', 'b', 'd']
type excludeArray_2 = ExcludeArray<['a', 'b', 'c', 'd'], 'c'|'d'>; //['a', 'b']

Popularity 4/10 Helpfulness 4/10 Language typescript

Source: Grepper

Tags: typescript

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Contributed on May 28 2022

Husnain Syed

0 Answers Avg Quality 2/10

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Exclude value from array typescript type

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