This topic describes the definitions of Stream API operations and properties that are not supported by these operations.

ReadableStream

  • Definition: For more information about the ReadableStream operation, see ReadableStream.ReadableStream().
  • Unsupported property: constructor is not supported.
Note Only one reader can be locked at a time.

ReadableStreamDefaultReader

  • Definition: For more information about the ReadableStreamDefaultReader operation, see ReadableStreamDefaultReader.
  • Unsupported property: constructor is not in use.

WritableStream

  • Definition: For more information about the WritableStream operation, see WritableStream.

WritableStreamDefaultWriter

  • Definition: For more information about the WritableStreamDefaultWriter operation, see WritableStreamDefaultWriter.
  • Unsupported properties:
    • constructor is not in use.
    • desiredSize and ready are not supported.

TransformStream

For more information about the TransformStream operation, see TransformStream.
Note The pipe function in TransformStream can process and respond to requests at the same time. However, the pipe function restricts the buffer size. We recommend that you take this factor into consideration to prevent deadlocks when you use asynchronous APIs.