1 files changed, 24 insertions, 57 deletions

diff --git a/node_modules/mem/index.js b/node_modules/mem/index.js
index 51faf012c..aa5a07398 100644
--- a/node_modules/mem/index.js
+++ b/node_modules/mem/index.js
@@ -1,84 +1,51 @@
 'use strict';
 const mimicFn = require('mimic-fn');
-const isPromise = require('p-is-promise');
-const mapAgeCleaner = require('map-age-cleaner');
 
 const cacheStore = new WeakMap();
 
-const defaultCacheKey = (...arguments_) => {
-	if (arguments_.length === 0) {
-		return '__defaultKey';
+const defaultCacheKey = function (x) {
+	if (arguments.length === 1 && (x === null || x === undefined || (typeof x !== 'function' && typeof x !== 'object'))) {
+		return x;
 	}
 
-	if (arguments_.length === 1) {
-		const [firstArgument] = arguments_;
-		if (
-			firstArgument === null ||
-			firstArgument === undefined ||
-			(typeof firstArgument !== 'function' && typeof firstArgument !== 'object')
-		) {
-			return firstArgument;
-		}
-	}
-
-	return JSON.stringify(arguments_);
+	return JSON.stringify(arguments);
 };
 
-const mem = (fn, options) => {
-	options = Object.assign({
+module.exports = (fn, opts) => {
+	opts = Object.assign({
 		cacheKey: defaultCacheKey,
-		cache: new Map(),
-		cachePromiseRejection: false
-	}, options);
-
-	if (typeof options.maxAge === 'number') {
-		mapAgeCleaner(options.cache);
-	}
-
-	const {cache} = options;
-	options.maxAge = options.maxAge || 0;
-
-	const setData = (key, data) => {
-		cache.set(key, {
-			data,
-			maxAge: Date.now() + options.maxAge
-		});
-	};
+		cache: new Map()
+	}, opts);
 
-	const memoized = function (...arguments_) {
-		const key = options.cacheKey(...arguments_);
+	const memoized = function () {
+		const cache = cacheStore.get(memoized);
+		const key = opts.cacheKey.apply(null, arguments);
 
 		if (cache.has(key)) {
-			return cache.get(key).data;
-		}
+			const c = cache.get(key);
 
-		const cacheItem = fn.call(this, ...arguments_);
+			if (typeof opts.maxAge !== 'number' || Date.now() < c.maxAge) {
+				return c.data;
+			}
+		}
 
-		setData(key, cacheItem);
+		const ret = fn.apply(null, arguments);
 
-		if (isPromise(cacheItem) && options.cachePromiseRejection === false) {
-			// Remove rejected promises from cache unless `cachePromiseRejection` is set to `true`
-			cacheItem.catch(() => cache.delete(key));
-		}
+		cache.set(key, {
+			data: ret,
+			maxAge: Date.now() + (opts.maxAge || 0)
+		});
 
-		return cacheItem;
+		return ret;
 	};
 
-	try {
-		// The below call will throw in some host environments
-		// See https://github.com/sindresorhus/mimic-fn/issues/10
-		mimicFn(memoized, fn);
-	} catch (_) {}
+	mimicFn(memoized, fn);
 
-	cacheStore.set(memoized, options.cache);
+	cacheStore.set(memoized, opts.cache);
 
 	return memoized;
 };
 
-module.exports = mem;
-// TODO: Remove this for the next major release
-module.exports.default = mem;
-
 module.exports.clear = fn => {
 	const cache = cacheStore.get(fn);