In Vue when using TypeScript, the SubmitEvent handler cannot be assigned

I've encountered an issue while working with Vue and TypeScript. I am trying to attach a submit handler function to my form's submit event, but I keep getting an error in Volar on VS Code. Here is the code snippet from my component:

<script setup lang="ts">
    function handleSubmit(e: SubmitEvent) {
        console.log(`Submitted: ${e.defaultPrevented}`);
    }
</script>

<template>
    <div>
        <h4>Create new</h4>
        <div>
            <form @submit.prevent="handleSubmit">
                <button type="submit">Submit</button>
            </form>
        </div>
    </div>
</template>

The error message from Volar states:

Type '(e: SubmitEvent) => void' is not assignable to type '(payload: Event) => void'. Types of parameters 'e' and 'payload' are incompatible.ts(2322)

Despite passing a SubmitEvent, TypeScript insists that there is a type mismatch. How can I resolve this discrepancy?

Answer №1

SubmitEvent interface builds upon the foundation of the Event interface. This allows for seamless casting from Event to SubmitEvent;

function handleSubmission(e: Event) {
    const event = e as SubmitEvent;
    console.log(`Form submitted: ${event.defaultPrevented}`);
}

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