source: frontend/node_modules/object-keys/isArguments.js

'use strict';

var toStr = Object.prototype.toString;

module.exports = function isArguments(value) {
        var str = toStr.call(value);
        var isArgs = str === '[object Arguments]';
        if (!isArgs) {
                isArgs = str !== '[object Array]' &&
                        value !== null &&
                        typeof value === 'object' &&
                        typeof value.length === 'number' &&
                        value.length >= 0 &&
                        toStr.call(value.callee) === '[object Function]';
        }
        return isArgs;
};