When using Inertia.js with Typescript, an issue arises where the argument types {} and InertiaFormProps{} are not compatible with the parameter type Partial<VisitOptions> or undefined

I set up a brand new Laravel project and integrated Laravel Breeze along with Typescript support.

After creating a form (using useForm()) and utilizing the .post() method with one of the options selected (such as onFinish: () =>), I encountered the following error:

The argument type {onFinish: () => {password: string, password_confirmation: string, name: string, email: string} & InertiaFormProps<{password: string, password_confirmation: string, name: string, email: string}>} is not compatible with the parameter type Partial | undefined

https://i.stack.imgur.com/ct7HI.png

When hovering over it in my code editor, it suggests adding all the members. Is this related to Typescript or am I missing something?

typescriptlaravelvue.jsinertiajslaravel-breeze

Answer №1

To properly utilize the arrow function, make sure to call it with curly braces {} in the form of functionName: () => {...}. Currently, your code is structured as functionName: () => ...

In the section of your code, update onFinish to

onFinish() => {   //ensure there are curly brackets here
     form.reset(...)
}

It appears that by omitting the {}, you are utilizing a concise body for the arrow function, where only a single expression is allowed and its result will be implicitly returned as the function's value. This lack of a proper return value could potentially be causing the issue.

However, I'm uncertain why your method is not functioning while using curly braces {} resolves the problem.

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