source: trip-planner-front/node_modules/is-arguments/index.js@ bdd6491

'use strict';

var hasToStringTag = require('has-tostringtag/shams')();
var callBound = require('call-bind/callBound');

var $toString = callBound('Object.prototype.toString');

var isStandardArguments = function isArguments(value) {
        if (hasToStringTag && value && typeof value === 'object' && Symbol.toStringTag in value) {
                return false;
        }
        return $toString(value) === '[object Arguments]';
};

var isLegacyArguments = function isArguments(value) {
        if (isStandardArguments(value)) {
                return true;
        }
        return value !== null &&
                typeof value === 'object' &&
                typeof value.length === 'number' &&
                value.length >= 0 &&
                $toString(value) !== '[object Array]' &&
                $toString(value.callee) === '[object Function]';
};

var supportsStandardArguments = (function () {
        return isStandardArguments(arguments);
}());

isStandardArguments.isLegacyArguments = isLegacyArguments; // for tests

module.exports = supportsStandardArguments ? isStandardArguments : isLegacyArguments;