1 files changed, 44 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/function/_define-length.js b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/function/_define-length.js
new file mode 100644
index 0000000000..496ea62c52
--- /dev/null
+++ b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/function/_define-length.js
@@ -0,0 +1,44 @@
+'use strict';
+
+var toPosInt = require('../number/to-pos-integer')
+
+  , test = function (a, b) {}, 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 (l) {
+			var args, i = 0;
+			if (cache[l]) return cache[l];
+			args = [];
+			while (l--) args.push('a' + (++i).toString(36));
+			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;
+	};
+}