@phensley/cldr-core/lib/utils/cache.js

Core library for @phensley/cldr

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var lru_1 = require("./lru");
/**
 * Links an arrow function to an LRU cache. The function converts
 * a string to a value of type T. The string itself is used as
 * the cache key.
 *
 * Examples:
 *  * Caching a number or date pattern. The cache key is the string
 *    representation of the pattern.
 *  * Caching any object that is expensive to create, where the cache
 *    key identifies the type of object to cache.
 */
var Cache = /** @class */ (function () {
    function Cache(builder, capacity) {
        this.builder = builder;
        this.storage = new lru_1.LRU(capacity);
    }
    Cache.prototype.size = function () {
        return this.storage.size();
    };
    Cache.prototype.get = function (raw) {
        var o = this.storage.get(raw);
        if (o === undefined) {
            o = this.builder(raw);
            this.storage.set(raw, o);
        }
        return o;
    };
    return Cache;
}());
exports.Cache = Cache;
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