node_modules

1 files changed, 56 insertions, 0 deletions

diff --git a/node_modules/es5-ext/function/_define-length.js b/node_modules/es5-ext/function/_define-length.js
new file mode 100644
index 000000000..13749d3bb
--- /dev/null
+++ b/node_modules/es5-ext/function/_define-length.js
@@ -0,0 +1,56 @@
+"use strict";
+
+var toPosInt = require("../number/to-pos-integer");
+
+var test = function (arg1, arg2) {
+	return arg2;
+};
+
+var desc, defineProperty, generate, mixin;
+
+try {
+	Object.defineProperty(test, "length", {
+		configurable: true,
+		writable: false,
+		enumerable: false,
+		value: 1
+	});
+} catch (ignore) {}
+
+if (test.length === 1) {
+	// ES6
+	desc = { configurable: true, writable: false, enumerable: false };
+	defineProperty = Object.defineProperty;
+	module.exports = function (fn, length) {
+		length = toPosInt(length);
+		if (fn.length === length) return fn;
+		desc.value = length;
+		return defineProperty(fn, "length", desc);
+	};
+} else {
+	mixin = require("../object/mixin");
+	generate = (function () {
+		var cache = [];
+		return function (length) {
+			var args, i = 0;
+			if (cache[length]) return cache[length];
+			args = [];
+			while (length--) args.push("a" + (++i).toString(36));
+			// eslint-disable-next-line no-new-func
+			return new Function(
+				"fn",
+				"return function (" + args.join(", ") + ") { return fn.apply(this, arguments); };"
+			);
+		};
+	}());
+	module.exports = function (src, length) {
+		var target;
+		length = toPosInt(length);
+		if (src.length === length) return src;
+		target = generate(length)(src);
+		try {
+			mixin(target, src);
+		} catch (ignore) {}
+		return target;
+	};
+}