TransformStream.writable

The writable read-only property of the TransformStream interface returns the WritableStream instance controlled by this TransformStream.

A WritableStream.

The following example creates a new TransformStream as a textEncoderStream, and prints the value of writable to the console.

const textEncoderStream = new TransformStream();
console.log(textEncoderStream.writable) // a WritableStream