Method write

packages/next/src/server/lib/mock-request.ts:241–262

(chunk: Uint8Array | Buffer | string)

  }

  public write(chunk: Uint8Array | Buffer | string) {
    if (this.resWriter) {
      return this.resWriter(chunk)
    }

    const buffer = Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk)

    if (this.maximumResponseBody !== undefined) {
      this.totalSize += buffer.byteLength
      if (this.totalSize > this.maximumResponseBody) {
        const error = new Error(
          `Response body exceeded maximum size of ${this.maximumResponseBody} bytes`
        ) as NodeJS.ErrnoException
        error.code = 'ERR_MAX_BODY_SIZE_EXCEEDED'
        this.destroy(error)
        return true
      }
    }

    this.buffers.push(buffer)
    return true
  }

  public end() {
    if (this.destroyed) {