ubdate

node_modules/memoizee/ext/max.js

@@ -0,0 +1,27 @@
+// Limit cache size, LRU (least recently used) algorithm.
+
+"use strict";
+
+var toPosInteger = require("es5-ext/number/to-pos-integer")
+  , lruQueue     = require("lru-queue")
+  , extensions   = require("../lib/registered-extensions");
+
+extensions.max = function (max, conf, options) {
+	var postfix, queue, hit;
+
+	max = toPosInteger(max);
+	if (!max) return;
+
+	queue = lruQueue(max);
+	postfix = (options.async && extensions.async) || (options.promise && extensions.promise)
+		? "async" : "";
+
+	conf.on("set" + postfix, hit = function (id) {
+		id = queue.hit(id);
+		if (id === undefined) return;
+		conf.delete(id);
+	});
+	conf.on("get" + postfix, hit);
+	conf.on("delete" + postfix, queue.delete);
+	conf.on("clear" + postfix, queue.clear);
+};