@mojojs/core/lib/cache.js

Real-time web framework

/**
 * Cache class.
 */
export class Cache {
    constructor() {
        /**
         * Maximum number of values in cache, defaults to `100`.
         */
        this.max = 100;
        this._cache = {};
        this._queue = [];
    }
    /**
     * Get cached value.
     */
    get(key) {
        return this._cache[key];
    }
    /**
     * Add value to the cache.
     */
    set(key, value) {
        const { max } = this;
        if (max <= 0)
            return;
        const cache = this._cache;
        const queue = this._queue;
        while (queue.length >= max) {
            const key = queue.shift();
            if (key !== undefined)
                delete cache[key];
        }
        if (cache[key] === undefined) {
            queue.push(key);
            cache[key] = value;
        }
    }
    /**
     * Current size of the cache.
     */
    get size() {
        return this._queue.length;
    }
}
//# sourceMappingURL=cache.js.map