1 files changed, 82 insertions, 0 deletions
diff --git a/third_party/webkit/PerformanceTests/Speedometer/resources/todomvc/vanilla-examples/es2015-babel-webpack/src/memory.js b/third_party/webkit/PerformanceTests/Speedometer/resources/todomvc/vanilla-examples/es2015-babel-webpack/src/memory.js
new file mode 100644
index 0000000000..c81c0e511f
--- /dev/null
+++ b/third_party/webkit/PerformanceTests/Speedometer/resources/todomvc/vanilla-examples/es2015-babel-webpack/src/memory.js
@@ -0,0 +1,82 @@
+(function(root) {
+  var localStorageMemory = {};
+  var cache = {};
+
+  /**
+   * number of stored items.
+   */
+  localStorageMemory.length = 0;
+
+  /**
+   * returns item for passed key, or null
+   *
+   * @para {String} key
+   *       name of item to be returned
+   * @returns {String|null}
+   */
+  localStorageMemory.getItem = function(key) {
+    return cache[key] || null;
+  };
+
+  /**
+   * sets item for key to passed value, as String
+   *
+   * @para {String} key
+   *       name of item to be set
+   * @para {String} value
+   *       value, will always be turned into a String
+   * @returns {undefined}
+   */
+  localStorageMemory.setItem = function(key, value) {
+    if (typeof value === 'undefined') {
+      localStorageMemory.removeItem(key);
+    } else {
+      if (!(cache.hasOwnProperty(key))) {
+        localStorageMemory.length++;
+      }
+
+      cache[key] = '' + value;
+    }
+  };
+
+  /**
+   * removes item for passed key
+   *
+   * @para {String} key
+   *       name of item to be removed
+   * @returns {undefined}
+   */
+  localStorageMemory.removeItem = function(key) {
+    if (cache.hasOwnProperty(key)) {
+      delete cache[key];
+      localStorageMemory.length--;
+    }
+  };
+
+  /**
+   * returns name of key at passed index
+   *
+   * @para {Number} index
+   *       Position for key to be returned (starts at 0)
+   * @returns {String|null}
+   */
+  localStorageMemory.key = function(index) {
+    return Object.keys(cache)[index] || null;
+  };
+
+  /**
+   * removes all stored items and sets length to 0
+   *
+   * @returns {undefined}
+   */
+  localStorageMemory.clear = function() {
+    cache = {};
+    localStorageMemory.length = 0;
+  };
+
+  if (typeof exports === 'object') {
+    module.exports = localStorageMemory;
+  } else {
+    root.localStorageMemory = localStorageMemory;
+  }
+})(this);
+\ No newline at end of file