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