DefinitelyTyped/types/compose-function/index.d.ts
2017-03-24 14:27:52 -07:00

31 lines
771 B
TypeScript

// Type definitions for compose-function
// Project: https://github.com/stoeffel/compose-function
// Definitions by: Denis Sokolov <https://github.com/denis-sokolov>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
// Hardcoded signatures for 2-4 parameters
declare function f<A, B, C>(
f1: (b: B) => C,
f2: (a: A) => B
): (a: A) => C
declare function f<A, B, C, D>(
f1: (b: C) => D,
f2: (a: B) => C,
f3: (a: A) => B
): (a: A) => D
declare function f<A, B, C, D, E>(
f1: (b: D) => E,
f2: (a: C) => D,
f3: (a: B) => C,
f4: (a: A) => B
): (a: A) => E
// Minimal typing for more than 4 parameters
declare function f<Result>(
f1: (a: any) => Result,
...functions: Function[]
): (a: any) => Result
export = f;