1.23.1

function.js
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			'use strict';

			var value = require('es5-ext/object/valid-value')
			, esniff = require('./')

			, next = esniff.next
			, resume = esniff.resume
			, collectNest = esniff.collectNest;

			module.exports = function (name/, options/) {
			var l, names, options = Object(arguments[1]), asProperty = false, asPlain = true;
			name = String(value(name));
			names = name.split('.').map(function (prop) {
			prop = prop.trim();
			if (!prop) throw new TypeError(name + " is not valid function name");
			return prop;
			});
			l = names.length;
			if (options.asProperty != null) asProperty = options.asProperty;
			if (options.asPlain != null) asPlain = options.asPlain;
			return function (code) {
			code = String(value(code));
			return esniff(code, names[0][0], function (i, previous) {
			var j = 0, prop;
			if (previous === '.') {
			if (!asProperty) return next();
			} else if (!asPlain) {
			return next();
			}
			while (j < l) {
			prop = names[j];
			if (code.indexOf(prop, i) !== i) return next();
			next(prop.length);
			i = esniff.index;
			++j;
			if (j < l) {
			if (code[i] !== '.') return resume();
			next();
			i = esniff.index;
			}
			}
			if (code[i] !== '(') return resume();
			return collectNest();
			});
			};
			};