Function stdoutOn

tests/exe.test.ts:108–118

()

    let messageReceived: string = "";

    function stdoutOn() {
      return new Promise((resolve) => {
        // exclamation mark suppresses the TS error that "child.stdout is possibly null"
        child.stdout!.on("data", function (data: any) {
          messageReceived += data.toString();
          if (messageReceived == fullSuccessMessage) {
            resolve("resolveMessage");
          }
        });
      });
    }

    await stdoutOn();
  });