sodiumjs/dist/typings/sodium/Lazy.d.ts

A Functional Reactive Programming (FRP) library for JavaScript

/**
 * A representation for a value that may not be available until the current
 * transaction is closed.
 */
export declare class Lazy<A> {
    constructor(f: () => A);
    private f;
    /**
     * Get the value if available, throwing an exception if not.
     * In the general case this should only be used in subsequent transactions to
     * when the Lazy was obtained.
     */
    get(): A;
    /**
     * Map the lazy value according to the specified function, so the returned Lazy reflects
     * the value of the function applied to the input Lazy's value.
     * @param f Function to apply to the contained value. It must be <em>referentially transparent</em>.
     */
    map<B>(f: (a: A) => B): Lazy<B>;
    /**
     * Lift a binary function into lazy values, so the returned Lazy reflects
     * the value of the function applied to the input Lazys' values.
     */
    lift<B, C>(b: Lazy<B>, f: (a: A, b: B) => C): Lazy<C>;
    /**
     * Lift a ternary function into lazy values, so the returned Lazy reflects
     * the value of the function applied to the input Lazys' values.
     */
    lift3<B, C, D>(b: Lazy<B>, c: Lazy<C>, f: (a: A, b: B, c: C) => D): Lazy<D>;
    /**
     * Lift a quaternary function into lazy values, so the returned Lazy reflects
     * the value of the function applied to the input Lazys' values.
     */
    lift4<B, C, D, E>(b: Lazy<B>, c: Lazy<C>, d: Lazy<D>, f: (a: A, b: B, c: C, d: D) => E): Lazy<E>;
}