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Declare callback types for built-in methods #43

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amikheychik opened this issue Dec 4, 2023 · 0 comments
Open

Declare callback types for built-in methods #43

amikheychik opened this issue Dec 4, 2023 · 0 comments
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needs planning Large-size issues that need to be broken down

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@amikheychik
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Callback types for methods like Array.prototype.map() do not exist in TypeScript standard library. Instead, they are inlined into the method declaration, e.g.:

map<U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any): U[];

Such type are useful when a return type or property type has to be declared.
@amikheychik amikheychik added the needs planning Large-size issues that need to be broken down label Dec 4, 2023
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@amikheychik