Commit

1 files changed, 47 insertions, 0 deletions

diff --git a/src/node_modules/es-abstract/2017/Set.js b/src/node_modules/es-abstract/2017/Set.js
new file mode 100644
index 0000000..9545b13
--- /dev/null
+++ b/src/node_modules/es-abstract/2017/Set.js
@@ -0,0 +1,47 @@
+'use strict';
+
+var GetIntrinsic = require('../GetIntrinsic');
+
+var $TypeError = GetIntrinsic('%TypeError%');
+
+var IsPropertyKey = require('./IsPropertyKey');
+var SameValue = require('./SameValue');
+var Type = require('./Type');
+
+// IE 9 does not throw in strict mode when writability/configurability/extensibility is violated
+var noThrowOnStrictViolation = (function () {
+	try {
+		delete [].length;
+		return true;
+	} catch (e) {
+		return false;
+	}
+}());
+
+// https://ecma-international.org/ecma-262/6.0/#sec-set-o-p-v-throw
+
+module.exports = function Set(O, P, V, Throw) {
+	if (Type(O) !== 'Object') {
+		throw new $TypeError('Assertion failed: `O` must be an Object');
+	}
+	if (!IsPropertyKey(P)) {
+		throw new $TypeError('Assertion failed: `P` must be a Property Key');
+	}
+	if (Type(Throw) !== 'Boolean') {
+		throw new $TypeError('Assertion failed: `Throw` must be a Boolean');
+	}
+	if (Throw) {
+		O[P] = V; // eslint-disable-line no-param-reassign
+		if (noThrowOnStrictViolation && !SameValue(O[P], V)) {
+			throw new $TypeError('Attempted to assign to readonly property.');
+		}
+		return true;
+	} else {
+		try {
+			O[P] = V; // eslint-disable-line no-param-reassign
+			return noThrowOnStrictViolation ? SameValue(O[P], V) : true;
+		} catch (e) {
+			return false;
+		}
+	}
+};