functionalscript/types/function/module.f.d.ts

FunctionalScript is a purely functional subset of JavaScript

/**
 * A generic function type.
 */
export type Func<I, O> = (_: I) => O;
/**
 * A postfix compose function.
 */
export declare const compose: <I, X>(g: Func<I, X>) => <O>(f: Func<X, O>) => Func<I, O>;
/**
 * A generic identity function.
 */
export declare const identity: <T>(value: T) => T;
/**
 * Flips the arguments of a curried function.
 */
export declare const flip: <A, B, C>(f: (a: A) => (b: B) => C) => (b: B) => (a: A) => C;
/**
 * A functional utility type that enables seamless chaining of transformations.
 */
type Fn<I, O> = {
    readonly result: Func<I, O>;
    readonly then: <T>(g: Func<O, T>) => Fn<I, T>;
};
/**
 * Creates an `Fn` instance from a function, enabling chaining of transformations.
 */
export declare const fn: <I, O>(result: Func<I, O>) => Fn<I, O>;
export {};