A class that allows to separate buffers thanks to a byte.

MessageData.ts

export class MessageData extends Array {
  private readonly delimiter: number

  constructor (delimiter: number) {
    super()
    this.delimiter = delimiter
  }

  isFinished (): boolean {
    return this.length === 0 || !this.includes(this.delimiter)
  }

  next (): number[] | null {
    const delimiterIndex = this.indexOf(this.delimiter)
    if (delimiterIndex !== -1) {
      return this.splice(0, delimiterIndex + 1)
    }
    return null
  }
}

On Node.JS, you can parse packet from 'data' event.

Example :

export default class Player {
  messageHandler: MessageData

  constructor() {
    this.messageHandler = new MessageData(0) // I want to split packets by 00 (NULL byte)
  }

  /**
   * @param data
   */
  async onHandleData(data: Buffer) {
    this.messageHandler.push(...data)
    while (!this.messageHandler.isFinished()) {
      const receive = this.messageHandler.next()
      if (receive !== null) {
        // ... here we handle the data ...
      }
    }
  }
}