@boost/decorators/esm/Memoize.d.ts

Experimental decorators for common patterns.

export type MemoizedFunction<T> = (...args: unknown[]) => T;
export type MemoizeHasher = (...args: unknown[]) => string;
export type MemoizeCache<T> = Map<string, {
    time?: number | null;
    value: T;
}>;
export interface MemoizeOptions<T> {
    /** A custom `Map` instance to store cached values. Can also be used to pre-cache expected values. */
    cache?: MemoizeCache<T> | null;
    /**
     * Time in milliseconds in which to keep the cache alive (TTL).
     * Pass `0` to cache indefinitely. Defaults to `0`.
     */
    expires?: number;
    /**
     * A hashing function to determine the cache key. Is passed the method's arguments
     * and must return a string. If not provided, arguments are hashed using `JSON.stringify()`.
     */
    hasher?: MemoizeHasher;
}
/**
 * A method decorator that caches the return value of a class method or
 * getter to consistently and efficiently return the same value.
 */
export declare function Memoize<T>(options?: MemoizeHasher | MemoizeOptions<T>): MethodDecorator;
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