2a09d1a4
 liuqimichale
添加宜春 天水 宣化
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"use strict";
var toArray = require("./to-array")
, isDate = require("../date/is-date")
, isValue = require("../object/is-value")
, isRegExp = require("../reg-exp/is-reg-exp");
var isArray = Array.isArray
, stringify = JSON.stringify
, objHasOwnProperty = Object.prototype.hasOwnProperty;
var keyValueToString = function (value, key) {
return stringify(key) + ":" + exports(value);
};
var sparseMap = function (arr) {
var i, length = arr.length, result = new Array(length);
for (i = 0; i < length; ++i) {
if (!objHasOwnProperty.call(arr, i)) continue;
result[i] = exports(arr[i]);
}
return result;
};
module.exports = exports = function (obj) {
if (!isValue(obj)) return String(obj);
switch (typeof obj) {
case "string":
return stringify(obj);
case "number":
case "boolean":
case "function":
return String(obj);
case "object":
if (isArray(obj)) return "[" + sparseMap(obj) + "]";
if (isRegExp(obj)) return String(obj);
if (isDate(obj)) return "new Date(" + obj.valueOf() + ")";
return "{" + toArray(obj, keyValueToString) + "}";
default:
throw new TypeError("Serialization of " + String(obj) + "is unsupported");
}
};
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