Removing data from a table using an identifier in Typescript

Recently, I have made the switch from using Javascript to TypeScript. However, I am facing an issue while trying to delete data from a table in my code. Whenever I attempt to delete data, I encounter this error message:

Property 'id' does not exist on type 'never'.

Here is a snippet of my code:

<template #action>
    <VButton color="danger" raised @click="deleteBrand" >Delete</VButton>
  </template>

var deleteData = ref(null);

function deleteBrand() {
if(deleteData.value !== null)
directoryStore.deleteBrand(deleteData.value.id).then(() => {
  deleteModalActive.value = false;
});
}

deleteBrand(id: number): any {
  return new Promise((resolve,reject) => {
    deleteBrand(id).then(() => {
      resolve("deleted");
      this.setBrands()
    }).catch(() => {
      reject('Nor Deleted');
    })
  })
}, 

This piece of code is part of a store component.

Answer №1

Exploring the integration of Vue and TypeScript can be found in the official documentation.

In functions like ref, where the output type is dependent on the input type, generic parameters play a crucial role in providing additional type information:

For instance:

ref<{ id: SomeType } | null>(null);

Furthermore, the deleteBrand function is non-functional as it lacks parameters and does not return a promise.

Answer №2

One effective approach is to refrain from setting the ref as null,

let deleteData = ref();

Alternatively, you can initialize the ref with an object schema:

let deleteData = ref({id:null});

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