install gulp

user/themes/anissabensalah/node_modules/es5-ext/math/trunc/implement.js

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

user/themes/anissabensalah/node_modules/es5-ext/math/trunc/index.js

@@ -0,0 +1,5 @@
+"use strict";
+
+module.exports = require("./is-implemented")()
+	? Math.trunc
+	: require("./shim");

user/themes/anissabensalah/node_modules/es5-ext/math/trunc/is-implemented.js

@@ -0,0 +1,7 @@
+"use strict";
+
+module.exports = function () {
+	var trunc = Math.trunc;
+	if (typeof trunc !== "function") return false;
+	return (trunc(13.67) === 13) && (trunc(-13.67) === -13);
+};

user/themes/anissabensalah/node_modules/es5-ext/math/trunc/shim.js

@@ -0,0 +1,13 @@
+"use strict";
+
+var floor = Math.floor;
+
+module.exports = function (value) {
+	if (isNaN(value)) return NaN;
+	value = Number(value);
+	if (value === 0) return value;
+	if (value === Infinity) return Infinity;
+	if (value === -Infinity) return -Infinity;
+	if (value > 0) return floor(value);
+	return -floor(-value);
+};