serialize(mapper, object, objectName, options = { xml: {} }) {
        var _a, _b, _c;
        const updatedOptions = {
            xml: {
                rootName: (_a = options.xml.rootName) !== null && _a !== void 0 ? _a : "",
                includeRoot: (_b = options.xml.includeRoot) !== null && _b !== void 0 ? _b : false,
                xmlCharKey: (_c = options.xml.xmlCharKey) !== null && _c !== void 0 ? _c : interfaces_js_1.XML_CHARKEY,
            },
        };
        let payload = {};
        const mapperType = mapper.type.name;
        if (!objectName) {
            objectName = mapper.serializedName;
        }
        if (mapperType.match(/^Sequence$/i) !== null) {
            payload = [];
        }
        if (mapper.isConstant) {
            object = mapper.defaultValue;
        }
        // This table of allowed values should help explain
        // the mapper.required and mapper.nullable properties.
        // X means "neither undefined or null are allowed".
        //           || required
        //           || true      | false
        //  nullable || ==========================
        //      true || null      | undefined/null
        //     false || X         | undefined
        // undefined || X         | undefined/null
        const { required, nullable } = mapper;
        if (required && nullable && object === undefined) {
            throw new Error(`${objectName} cannot be undefined.`);
        }
        if (required && !nullable && (object === undefined || object === null)) {
            throw new Error(`${objectName} cannot be null or undefined.`);
        }
        if (!required && nullable === false && object === null) {
            throw new Error(`${objectName} cannot be null.`);
        }
        if (object === undefined || object === null) {
            payload = object;
        }
        else {
            if (mapperType.match(/^any$/i) !== null) {
                payload = object;
            }
            else if (mapperType.match(/^(Number|String|Boolean|Object|Stream|Uuid)$/i) !== null) {
                payload = serializeBasicTypes(mapperType, objectName, object);
            }
            else if (mapperType.match(/^Enum$/i) !== null) {
                const enumMapper = mapper;
                payload = serializeEnumType(objectName, enumMapper.type.allowedValues, object);
            }
            else if (mapperType.match(/^(Date|DateTime|TimeSpan|DateTimeRfc1123|UnixTime)$/i) !== null) {
                payload = serializeDateTypes(mapperType, object, objectName);
            }
            else if (mapperType.match(/^ByteArray$/i) !== null) {
                payload = serializeByteArrayType(objectName, object);
            }
            else if (mapperType.match(/^Base64Url$/i) !== null) {
                payload = serializeBase64UrlType(objectName, object);
            }
            else if (mapperType.match(/^Sequence$/i) !== null) {
                payload = serializeSequenceType(this, mapper, object, objectName, Boolean(this.isXML), updatedOptions);
            }
            else if (mapperType.match(/^Dictionary$/i) !== null) {
                payload = serializeDictionaryType(this, mapper, object, objectName, Boolean(this.isXML), updatedOptions);
            }
            else if (mapperType.match(/^Composite$/i) !== null) {
                payload = serializeCompositeType(this, mapper, object, objectName, Boolean(this.isXML), updatedOptions);
            }
        }
        return payload;
    }
Serialize the given object based on its metadata defined in the mapper

@param mapper - The mapper which defines the metadata of the serializable object

@param object - A valid Javascript object to be serialized

@param objectName - Name of the serialized object

@param options - additional options to serialization

@returns A valid serialized Javascript object