import _includes from "./_includes.js"; import _map from "./_map.js"; import _quote from "./_quote.js"; import _toISOString from "./_toISOString.js"; import keys from "../keys.js"; import reject from "../reject.js"; export default function _toString(x, seen) { var recur = function recur(y) { var xs = seen.concat([x]); return _includes(y, xs) ? '' : _toString(y, xs); }; // mapPairs :: (Object, [String]) -> [String] var mapPairs = function (obj, keys) { return _map(function (k) { return _quote(k) + ': ' + recur(obj[k]); }, keys.slice().sort()); }; switch (Object.prototype.toString.call(x)) { case '[object Arguments]': return '(function() { return arguments; }(' + _map(recur, x).join(', ') + '))'; case '[object Array]': return '[' + _map(recur, x).concat(mapPairs(x, reject(function (k) { return /^\d+$/.test(k); }, keys(x)))).join(', ') + ']'; case '[object Boolean]': return typeof x === 'object' ? 'new Boolean(' + recur(x.valueOf()) + ')' : x.toString(); case '[object Date]': return 'new Date(' + (isNaN(x.valueOf()) ? recur(NaN) : _quote(_toISOString(x))) + ')'; case '[object Null]': return 'null'; case '[object Number]': return typeof x === 'object' ? 'new Number(' + recur(x.valueOf()) + ')' : 1 / x === -Infinity ? '-0' : x.toString(10); case '[object String]': return typeof x === 'object' ? 'new String(' + recur(x.valueOf()) + ')' : _quote(x); case '[object Undefined]': return 'undefined'; default: if (typeof x.toString === 'function') { var repr = x.toString(); if (repr !== '[object Object]') { return repr; } } return '{' + mapPairs(x, keys(x)).join(', ') + '}'; } }