Method process

lib/serialization/ObjectMiddleware.js:576–707

(item)

		 * @param {ComplexSerializableType} item item to serialize
		 */
		const process = (item) => {
			if (Buffer.isBuffer(item)) {
				// check if we can emit a reference
				const ref = referenceable.get(item);
				if (ref !== undefined) {
					result.push(ESCAPE, ref - currentPos);
					return;
				}
				const alreadyUsedBuffer = dedupeBuffer(item);
				if (alreadyUsedBuffer !== item) {
					const ref = referenceable.get(alreadyUsedBuffer);
					if (ref !== undefined) {
						referenceable.set(item, ref);
						result.push(ESCAPE, ref - currentPos);
						return;
					}
					item = alreadyUsedBuffer;
				}
				addReferenceable(item);

				result.push(/** @type {Buffer} */ (item));
			} else if (item === ESCAPE) {
				result.push(ESCAPE, ESCAPE_ESCAPE_VALUE);
			} else if (
				typeof item === "object"
				// We don't have to check for null as ESCAPE is null and this has been checked before
			) {
				// check if we can emit a reference
				const ref = referenceable.get(item);
				if (ref !== undefined) {
					result.push(ESCAPE, ref - currentPos);
					return;
				}

				if (cycleStack.has(item)) {
					throw new Error(
						"This is a circular references. To serialize circular references use 'setCircularReference' somewhere in the circle during serialize and deserialize."
					);
				}

				const { request, name, serializer } = ObjectMiddleware.getSerializerFor(
					/** @type {Constructor} */
					(item)
				);
				const key = `${request}/${name}`;
				const lastIndex = objectTypeLookup.get(key);

				if (lastIndex === undefined) {
					objectTypeLookup.set(key, currentPosTypeLookup++);

					result.push(ESCAPE, request, name);
				} else {
					result.push(ESCAPE, currentPosTypeLookup - lastIndex);
				}

				cycleStack.add(item);

				try {