Async function passed as prop into React component causing @typescript-eslint/no-misused-promises error

I have the following asynchronous submitNewPatient function which is throwing @typescript-eslint/no-misused-promises error message from elint. Is it possible to adjust the function such that it removes this error?

const submitNewPatient = async (values: PatientFormValues) => {
    try {
      const { data: newPatient } = await axios.post<Patient>(
        `${apiBaseUrl}/patients`,
        values
      );
      dispatch({ type: "ADD_PATIENT", payload: newPatient });
      closeModal();
    } catch (e: unknown) {
      if (axios.isAxiosError(e)) {
        console.error(e?.response?.data || "Unrecognized axios error");
        setError(
          String(e?.response?.data?.error) || "Unrecognized axios error"
        );
      } else {
        console.error("Unknown error", e);
        setError("Unknown error");
      }
    }
  };

Component used to pass function as a prop:

<AddPatientModal
        modalOpen={modalOpen}
        onSubmit={submitNewPatient}
        error={error}
        onClose={closeModal}
      />

I have also tried the following which removes the eslint error message based. However, seems like I am not entering the async code block (perhaps not triggering the async() function):

  const submitNewPatient = (values: PatientFormValues) => {
    async () => {
      try {
        const { data: newPatient } = await axios.post<Patient>(
          `${apiBaseUrl}/patients`,
          values
        );
        dispatch({ type: "ADD_PATIENT", payload: newPatient });
        closeModal();
      } catch (e: unknown) {
        if (axios.isAxiosError(e)) {
          console.error(e?.response?.data || "Unrecognized axios error");
          setError(
            String(e?.response?.data?.error) || "Unrecognized axios error"
          );
        } else {
          console.error("Unknown error", e);
          setError("Unknown error");
        }
      }
    };
  };

1 answer

  • answered 2022-05-07 06:37 A G

    I think the problem is with the async code block syntax. You need it to make it an IIFE (Immediately-invoked Function Expression for it to be executed immediately.

    (async () => {
        await someAsyncFunction();
    })();
    

    Your submitNewPatient becomes -

    const submitNewPatient = (values: PatientFormValues) => {
        (async () => {
          try {
            const { data: newPatient } = await axios.post<Patient>(
              `${apiBaseUrl}/patients`,
              values
            );
            dispatch({ type: "ADD_PATIENT", payload: newPatient });
            closeModal();
          } catch (e: unknown) {
            if (axios.isAxiosError(e)) {
              console.error(e?.response?.data || "Unrecognized axios error");
              setError(
                String(e?.response?.data?.error) || "Unrecognized axios error"
              );
            } else {
              console.error("Unknown error", e);
              setError("Unknown error");
            }
          }
        })();
      };
    

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