Rewriting Project

1 files changed, 22 insertions, 0 deletions

diff --git a/node_modules/core-js/modules/esnext.map.update.js b/node_modules/core-js/modules/esnext.map.update.js
new file mode 100644
index 0000000..97358e8
--- /dev/null
+++ b/node_modules/core-js/modules/esnext.map.update.js
@@ -0,0 +1,22 @@
+'use strict';
+var $ = require('../internals/export');
+var IS_PURE = require('../internals/is-pure');
+var anObject = require('../internals/an-object');
+var aFunction = require('../internals/a-function');
+
+// `Set.prototype.update` method
+// https://github.com/tc39/proposal-collection-methods
+$({ target: 'Map', proto: true, real: true, forced: IS_PURE }, {
+  update: function update(key, callback /* , thunk */) {
+    var map = anObject(this);
+    var length = arguments.length;
+    aFunction(callback);
+    var isPresentInMap = map.has(key);
+    if (!isPresentInMap && length < 3) {
+      throw TypeError('Updating absent value');
+    }
+    var value = isPresentInMap ? map.get(key) : aFunction(length > 2 ? arguments[2] : undefined)(key, map);
+    map.set(key, callback(value, key, map));
+    return map;
+  }
+});