ReactJS & Typescript - try catch fetch

ts-try-catch-fetch.tsx

        try {
            setIsFetching(true)
            
            const apiURL = `${API_URL}/authentication/signin`
            const strBody: BodyInit = `{"email":"${email}","password":"${password}"}`

            const response: Response = await fetch(apiURL, {
                method: 'POST',
                mode: 'cors',
                headers: {
                    Accept: 'application/json',
                    'Content-Type': 'application/json',
                },
                body: strBody,
            })

            if (!response.ok) throw response

            const data = await response.json()
        } catch (err: unknown) {
            if (err instanceof Response) {
                const data = await err.json()
                if (data.hasOwnProperty('message')) {
                    setIsOpenSnack(true)
                    setErrorMessage(data.message)
                }
            }
        } finally {
            setIsFetching(false)
        }