pip-services3-commons-node
Version:
Portable abstractions and patterns for Pip.Services in Node.js
64 lines • 2.28 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
/** @module convert */
/** @hidden */
var _ = require('lodash');
/**
* Converts arbitrary values into map objects using extended conversion rules:
* - Objects: property names as keys, property values as values
* - Arrays: element indexes as keys, elements as values
*
* ### Example ###
*
* let value1 = MapConverted.toNullableMap("ABC"); // Result: null
* let value2 = MapConverted.toNullableMap({ key: 123 }); // Result: { key: 123 }
* let value3 = MapConverted.toNullableMap([1,2,3]); // Result: { "0": 1, "1": 2, "2": 3 }
*/
var MapConverter = /** @class */ (function () {
function MapConverter() {
}
/**
* Converts value into map object or returns null when conversion is not possible.
*
* @param value the value to convert.
* @returns map object or null when conversion is not supported.
*/
MapConverter.toNullableMap = function (value) {
if (value == null)
return null;
else if (_.isArray(value)) {
var map = {};
for (var i = 0; i < value.length; i++)
map[i.toString()] = value[i];
return map;
}
else
return _.isObject(value) ? value : null;
};
/**
* Converts value into map object or returns empty map when conversion is not possible
*
* @param value the value to convert.
* @returns map object or empty map when conversion is not supported.
*
* @see [[toNullableMap]]
*/
MapConverter.toMap = function (value) {
return MapConverter.toNullableMap(value) || {};
};
/**
* Converts value into map object or returns default when conversion is not possible
*
* @param value the value to convert.
* @param defaultValue the default value.
* @returns map object or emptu map when conversion is not supported.
*
* @see [[toNullableMap]]
*/
MapConverter.toMapWithDefault = function (value, defaultValue) {
return MapConverter.toNullableMap(value) || defaultValue;
};
return MapConverter;
}());
exports.MapConverter = MapConverter;
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