Method cancel

out/cli.cjs:13970–13978

* Cancels the stream, signaling a loss of interest in the stream by a consumer. * * The supplied `reason` argument will be given to the underlying source's UnderlyingSource.cancel | cancel() * method, which might or might not use it.

(reason = void 0)

         * method, which might or might not use it.
         */
        cancel(reason = void 0) {
          if (!IsReadableStream(this)) {
            return promiseRejectedWith(streamBrandCheckException$1("cancel"));
          }
          if (IsReadableStreamLocked(this)) {
            return promiseRejectedWith(new TypeError("Cannot cancel a stream that already has a reader"));
          }
          return ReadableStreamCancel(this, reason);
        }
        getReader(rawOptions = void 0) {
          if (!IsReadableStream(this)) {
            throw streamBrandCheckException$1("getReader");