I recently developed a Vue 3 / TypeScript Composable for uploading images to Firebase storage. The code snippet below illustrates the structure of the ImageUpload interface:
interface ImageUpload {
uploadTask?: UploadTask;
downloadURL?: string;
progress?: number;
error?: Error;
isCanceled: boolean;
isRunning: boolean;
isPaused: boolean;
isSuccess: boolean;
isError: boolean;
}
export const useImageUpload = (file: File) => {
// Implementation details here...
};
When implementing this Composable in a Vue component, the following code snippet is used:
<template>
<!-- Code snippet goes here -->
</template>
<script setup lang="ts">
// Script setup details
</script>
An issue arises when running the application, as console errors are displayed including "TypeError: Cannot read properties of undefined". This error indicates that certain properties such as 'isError' are not defined.
To resolve this issue and avoid declaring variables at the top level, alternative solutions need to be explored.