pip-services3-commons-node
Version:
Portable abstractions and patterns for Pip.Services in Node.js
89 lines • 3.09 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
var TypeConverter_1 = require("./TypeConverter");
var MapConverter_1 = require("./MapConverter");
/**
* Converts arbitrary values from and to JSON (JavaScript Object Notation) strings.
*
* ### Example ###
*
* let value1 = JsonConverter.fromJson("{\"key\":123}"); // Result: { key: 123 }
* let value2 = JsonConverter.toMap({ key: 123}); // Result: "{\"key\":123}"
*
* @see [[TypeCode]]
*/
var JsonConverter = /** @class */ (function () {
function JsonConverter() {
}
/**
* Converts JSON string into a value of type specified by a TypeCode.
*
* @param type the TypeCode for the data type into which 'value' is to be converted.
* @param value the JSON string to convert.
* @returns converted object value or null when value is null.
*/
JsonConverter.fromJson = function (type, value) {
if (value == null)
return null;
var temp = JSON.parse(value);
return TypeConverter_1.TypeConverter.toType(type, temp);
};
/**
* Converts value into JSON string.
*
* @param value the value to convert.
* @returns JSON string or null when value is null.
*/
JsonConverter.toJson = function (value) {
if (value == null)
return null;
return JSON.stringify(value);
};
/**
* Converts JSON string into map object or returns null when conversion is not possible.
*
* @param value the JSON string to convert.
* @returns Map object value or null when conversion is not supported.
*
* @see [[MapConverter.toNullableMap]]
*/
JsonConverter.toNullableMap = function (value) {
if (value == null)
return null;
try {
var map = JSON.parse(value);
return MapConverter_1.MapConverter.toNullableMap(map);
}
catch (Exception) {
return null;
}
};
/**
* Converts JSON string into map object or returns empty map when conversion is not possible.
*
* @param value the JSON string to convert.
* @returns Map object value or empty object when conversion is not supported.
*
* @see [[toNullableMap]]
*/
JsonConverter.toMap = function (value) {
var result = JsonConverter.toNullableMap(value);
return result != null ? result : {};
};
/**
* Converts JSON string into map object or returns default value when conversion is not possible.
*
* @param value the JSON string to convert.
* @param defaultValue the default value.
* @returns Map object value or default when conversion is not supported.
*
* @see [[toNullableMap]]
*/
JsonConverter.toMapWithDefault = function (value, defaultValue) {
var result = JsonConverter.toNullableMap(value);
return result != null ? result : defaultValue;
};
return JsonConverter;
}());
exports.JsonConverter = JsonConverter;
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