test('bufferWriteableStream - buffers data when no listener', async () => {
		const stream = writeableBufferStream();

		await timeout(0);
		stream.write(VSBuffer.fromString('Hello'));
		await timeout(0);
		stream.end(VSBuffer.fromString('World'));

		let chunks: VSBuffer[] = [];
		stream.on('data', data => {
			chunks.push(data);
		});

		let ended = false;
		stream.on('end', () => {
			ended = true;
		});

		let errors: Error[] = [];
		stream.on('error', error => {
			errors.push(error);
		});

		assert.equal(chunks.length, 1);
		assert.equal(chunks[0].toString(), 'HelloWorld');
		assert.equal(ended, true);
		assert.equal(errors.length, 0);
	});

export function toBufferOrReadable(value: string | ITextSnapshot | undefined): VSBuffer | VSBufferReadable | undefined {
	if (typeof value === 'undefined') {
		return undefined;
	}

	if (typeof value === 'string') {
		return VSBuffer.fromString(value);
	}

	return new TextSnapshotReadable(value);
}

export function createMessageOfType(type: MessageType): VSBuffer {
	const result = VSBuffer.alloc(1);

	switch (type) {
		case MessageType.Initialized: result.writeUInt8(1, 0); break;
		case MessageType.Ready: result.writeUInt8(2, 0); break;
		case MessageType.Terminate: result.writeUInt8(3, 0); break;
	}

	return result;
}

export function isMessageOfType(message: VSBuffer, type: MessageType): boolean {
	if (message.byteLength !== 1) {
		return false;
	}

	switch (message.readUInt8(0)) {
		case 1: return type === MessageType.Initialized;
		case 2: return type === MessageType.Ready;
		case 3: return type === MessageType.Terminate;
		default: return false;
	}
}

	read(): VSBuffer | null {
		let value = this.snapshot.read();

		// Handle preamble if provided
		if (!this.preambleHandled) {
			this.preambleHandled = true;

			if (typeof this.preamble === 'string') {
				if (typeof value === 'string') {
					value = this.preamble + value;
				} else {
					value = this.preamble;
				}
			}
		}

		if (typeof value === 'string') {
			return VSBuffer.fromString(value);
		}

		return null;
	}

		const onMessage = Event.fromNodeEventEmitter<VSBuffer>(ipcRenderer, 'ipc:message', (_, message: Buffer) => VSBuffer.wrap(message));