appium-uiautomator2-driver/build/lib/utils/memoize.js

UiAutomator2 integration for Appium

"use strict";
// TODO(appium server 3.4.1+): Replace local `memoize` with imports from `appium/support`
// once this driver declares that minimum server version.
Object.defineProperty(exports, "__esModule", { value: true });
exports.memoize = memoize;
/**
 * Creates a memoized version of a function.
 *
 * @param fn - Function to memoize
 * @param resolver - Optional cache key resolver. If omitted, the first argument is used as the cache key.
 * @returns Memoized function with a mutable `.cache` map (compatible with lodash-style cache resets in tests).
 */
function memoize(fn, resolver) {
    const memoizedFn = function (...args) {
        const key = resolver ? resolver.apply(this, args) : args[0];
        if (memoizedFn.cache.has(key)) {
            return memoizedFn.cache.get(key);
        }
        const result = fn.apply(this, args);
        memoizedFn.cache.set(key, result);
        return result;
    };
    memoizedFn.cache = new Map();
    return memoizedFn;
}
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