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1 files changed, 17 insertions, 0 deletions

diff --git a/src/node_modules/es-abstract/2019/StrictEqualityComparison.js b/src/node_modules/es-abstract/2019/StrictEqualityComparison.js
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+++ b/src/node_modules/es-abstract/2019/StrictEqualityComparison.js
@@ -0,0 +1,17 @@
+'use strict';
+
+var Type = require('./Type');
+
+// https://www.ecma-international.org/ecma-262/5.1/#sec-11.9.6
+
+module.exports = function StrictEqualityComparison(x, y) {
+	var xType = Type(x);
+	var yType = Type(y);
+	if (xType !== yType) {
+		return false;
+	}
+	if (xType === 'Undefined' || xType === 'Null') {
+		return true;
+	}
+	return x === y; // shortcut for steps 4-7
+};