Function IsWritableStreamDefaultController

out/cli.cjs:12738–12746

(x5)

        });
      }
      function IsWritableStreamDefaultController(x5) {
        if (!typeIsObject(x5)) {
          return false;
        }
        if (!Object.prototype.hasOwnProperty.call(x5, "_controlledWritableStream")) {
          return false;
        }
        return x5 instanceof WritableStreamDefaultController2;
      }
      function SetUpWritableStreamDefaultController(stream4, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) {
        controller._controlledWritableStream = stream4;
        stream4._writableStreamController = controller;