@httpc/kit/dist/esm/caching/WaterfallCache.js

httpc toolbox for building function-based API with minimal code and end-to-end type safety

export class WaterfallCache {
    constructor(options) {
        this.providers = options.providers;
    }
    keys() {
        return this.providers[0].keys();
    }
    has(key) {
        for (const p of this.providers) {
            if (p.has(key)) {
                return true;
            }
        }
        return false;
    }
    get(key) {
        for (const p of this.providers) {
            const value = p.get(key);
            if (value !== null && value !== undefined) {
                return value;
            }
        }
    }
    set(key, value) {
        for (const p of this.providers) {
            p.set(key, value);
        }
    }
    delete(key) {
        for (const p of this.providers) {
            p.delete(key);
        }
    }
    clear() {
        for (const p of this.providers) {
            p.clear();
        }
    }
}