1 files changed, 39 insertions, 0 deletions
diff --git a/node_modules/es-abstract/5/FromPropertyDescriptor.js b/node_modules/es-abstract/5/FromPropertyDescriptor.js
new file mode 100644
index 000000000..a3cefbe51
--- /dev/null
+++ b/node_modules/es-abstract/5/FromPropertyDescriptor.js
@@ -0,0 +1,39 @@
+'use strict';
+
+var GetIntrinsic = require('../GetIntrinsic');
+
+var $TypeError = GetIntrinsic('%TypeError%');
+
+var Type = require('./Type');
+var IsDataDescriptor = require('./IsDataDescriptor');
+var IsAccessorDescriptor = require('./IsAccessorDescriptor');
+
+var assertRecord = require('../helpers/assertRecord');
+
+// https://ecma-international.org/ecma-262/5.1/#sec-8.10.4
+
+module.exports = function FromPropertyDescriptor(Desc) {
+	if (typeof Desc === 'undefined') {
+		return Desc;
+	}
+
+	assertRecord(Type, 'Property Descriptor', 'Desc', Desc);
+
+	if (IsDataDescriptor(Desc)) {
+		return {
+			value: Desc['[[Value]]'],
+			writable: !!Desc['[[Writable]]'],
+			enumerable: !!Desc['[[Enumerable]]'],
+			configurable: !!Desc['[[Configurable]]']
+		};
+	} else if (IsAccessorDescriptor(Desc)) {
+		return {
+			get: Desc['[[Get]]'],
+			set: Desc['[[Set]]'],
+			enumerable: !!Desc['[[Enumerable]]'],
+			configurable: !!Desc['[[Configurable]]']
+		};
+	} else {
+		throw new $TypeError('FromPropertyDescriptor must be called with a fully populated Property Descriptor');
+	}
+};