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| type RemoveFromTuple< | |
| Tuple extends readonly unknown[], | |
| RemoveCount extends number, | |
| Index extends 1[] = [] | |
| > = Index["length"] extends RemoveCount | |
| ? Tuple | |
| : Tuple extends [infer First, ...infer Rest] | |
| ? RemoveFromTuple<Rest, RemoveCount, [...Index, 1]> | |
| : Tuple; | |
| type ConcatTuples< | |
| Prefix extends readonly unknown[], | |
| Suffix extends readonly unknown[] | |
| > = [...Prefix, ...Suffix]; | |
| type ExtractFunctionParams<T> = T extends (this: infer TThis, ...args: infer P extends readonly unknown[]) => infer R | |
| ? { thisArg: TThis; params: P; returnType: R } | |
| : never; | |
| type BindFunction< | |
| T extends (this: any, ...args: any[]) => any, | |
| TThis, | |
| TBoundArgs extends readonly unknown[], | |
| ReceiverBound extends boolean | |
| > = ExtractFunctionParams<T> extends { | |
| thisArg: infer OrigThis; | |
| params: infer P extends readonly unknown[]; | |
| returnType: infer R; | |
| } | |
| ? ReceiverBound extends true | |
| ? (...args: RemoveFromTuple<P, Extract<TBoundArgs["length"], number>>) => R extends [OrigThis, ...infer Rest] | |
| ? [TThis, ...Rest] // Replace `this` with `thisArg` | |
| : R | |
| : <U, RemainingArgs extends RemoveFromTuple<P, Extract<TBoundArgs["length"], number>>>( | |
| thisArg: U, | |
| ...args: RemainingArgs | |
| ) => R extends [OrigThis, ...infer Rest] | |
| ? [U, ...ConcatTuples<TBoundArgs, Rest>] // Preserve bound args in return type | |
| : R | |
| : never; | |
| declare function callBind< | |
| const T extends (this: any, ...args: any[]) => any, | |
| Extracted extends ExtractFunctionParams<T>, | |
| const TBoundArgs extends Partial<Extracted["params"]> & readonly unknown[], | |
| const TThis extends Extracted["thisArg"] | |
| >( | |
| args: [fn: T, thisArg: TThis, ...boundArgs: TBoundArgs] | |
| ): BindFunction<T, TThis, TBoundArgs, true>; | |
| declare function callBind< | |
| const T extends (this: any, ...args: any[]) => any, | |
| Extracted extends ExtractFunctionParams<T>, | |
| const TBoundArgs extends Partial<Extracted["params"]> & readonly unknown[] | |
| >( | |
| args: [fn: T, ...boundArgs: TBoundArgs] | |
| ): BindFunction<T, Extracted["thisArg"], TBoundArgs, false>; | |
| declare function callBind<const TArgs extends readonly unknown[]>( | |
| args: [fn: Exclude<TArgs[0], Function>, ...rest: TArgs] | |
| ): never; | |
| // export as namespace callBind; | |
| export = callBind; | |