eyeglass/lib/util/SimpleCache.d.ts

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import { Dict } from "./typescriptUtils";
/**
  * A simple caching implementation
  */
export declare class SimpleCache<T> {
    cache: Dict<T>;
    constructor();
    /**
      * Returns the current cached value
      *
      * @param   {String} key - they cache key to lookup
      * @returns {*} the cached value
      */
    get(key: string): T | undefined;
    /**
      * Sets the cached value
      *
      * @param    {String} key - they cache key to update
      * @param    {*} value - they value to store
      */
    set(key: string, value: T): void;
    /**
      * Whether or not the cache has a value for a given key
      *
      * @param    {String} key - they cache key to lookup
      * @returns  {Boolean} whether or not the key is set
      */
    has(key: string): boolean;
    /**
      * Gets the current value from the cache (if it exists), otherwise invokes the callback
      *
      * @param    {String} key - they cache key lookup
      * @param    {Function} callback - the callback to be invoked when the key is not in the cache
      * @returns
      */
    getOrElse(key: string, callback: () => T): T;
    /**
      * Purges the cache
      */
    purge(): void;
}
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