project bootstrap

node_modules/stop-iteration-iterator/index.js

@@ -0,0 +1,40 @@
+'use strict';
+
+var SLOT = require('internal-slot');
+
+var $SyntaxError = SyntaxError;
+var $StopIteration = typeof StopIteration === 'object' ? StopIteration : null;
+
+module.exports = function getStopIterationIterator(origIterator) {
+	if (!$StopIteration) {
+		throw new $SyntaxError('this environment lacks StopIteration');
+	}
+
+	SLOT.set(origIterator, '[[Done]]', false);
+
+	var siIterator = {
+		next: function next() {
+			var iterator = SLOT.get(this, '[[Iterator]]');
+			var done = SLOT.get(iterator, '[[Done]]');
+			try {
+				return {
+					done: done,
+					value: done ? void undefined : iterator.next()
+				};
+			} catch (e) {
+				SLOT.set(iterator, '[[Done]]', true);
+				if (e !== $StopIteration) {
+					throw e;
+				}
+				return {
+					done: true,
+					value: void undefined
+				};
+			}
+		}
+	};
+
+	SLOT.set(siIterator, '[[Iterator]]', origIterator);
+
+	return siIterator;
+};