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node_modules/object-is/index.js

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+"use strict";
+
+/* https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.is */
+
+var NumberIsNaN = function (value) {
+	return value !== value;
+};
+
+module.exports = function is(a, b) {
+	if (a === 0 && b === 0) {
+		return 1 / a === 1 / b;
+	} else if (a === b) {
+		return true;
+	} else if (NumberIsNaN(a) && NumberIsNaN(b)) {
+		return true;
+	}
+	return false;
+};
+