install gulp

user/themes/anissabensalah/node_modules/es5-ext/number/max-safe-integer/implement.js

@@ -0,0 +1,8 @@
+"use strict";
+
+if (!require("./is-implemented")()) {
+	Object.defineProperty(Number, "MAX_SAFE_INTEGER", { value: require("./"),
+		configurable: false,
+enumerable: false,
+writable: false });
+}

user/themes/anissabensalah/node_modules/es5-ext/number/max-safe-integer/index.js

@@ -0,0 +1,3 @@
+"use strict";
+
+module.exports = Math.pow(2, 53) - 1;

user/themes/anissabensalah/node_modules/es5-ext/number/max-safe-integer/is-implemented.js

@@ -0,0 +1,5 @@
+"use strict";
+
+module.exports = function () {
+	return typeof Number.MAX_SAFE_INTEGER === "number";
+};