@croct/cache/defaultWhileMiss.js

An abstraction layer for caching.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.DefaultWhileMissCache = void 0;
class DefaultWhileMissCache {
    constructor(config) {
        this.provider = config.provider;
        this.defaultValue = config.defaultValue;
        this.errorHandler = config.errorHandler ?? (() => { });
    }
    get(key, loader) {
        return this.provider.get(key, innerKey => {
            // Schedule loading in the next tick avoiding resolving
            // before the surrounding cache retrieval resolves
            setImmediate(() => loader(innerKey).catch(error => this.errorHandler(key, error)));
            return Promise.resolve(this.defaultValue);
        });
    }
    set(key, value) {
        return this.provider.set(key, value);
    }
    delete(key) {
        return this.provider.delete(key);
    }
}
exports.DefaultWhileMissCache = DefaultWhileMissCache;