Troubleshooting TypeScript when importing external JavaScript: Module not found or no type declaration file available

I recently acquired a VueJS admin template built in JS and am looking to integrate it into my existing TS application. However, when I attempt to transfer the components, views, and other elements, I encounter the following error message. Is there a way to resolve this issue without directly modifying the external code? I need a sustainable solution that will persist through updates.

Below is the error:

ERROR in /Users/username/MyApplicationDirectory/src/main.ts(17,32):
17:32 Cannot find module './components/TroubledComponent' or its corresponding type declarations.
    15 | 
    16 | // Custom components
  > 17 | import TroubledComponent from './components/TroubledComponent'
       |                                ^
    18 | import X from '@/components/X'
    19 | import Y from '@/components/Y'
    20 | import Z from '@/components/Z'

This is the content of my tsconfig.json:

{
  "compilerOptions": {
    "target": "esnext",
    "module": "esnext",
    // Other configurations...
  },
  "include": [
    "src/**/*.ts",
    "tests/**/*.ts"
  ],
  "exclude": [
    "node_modules"
  ]
}

Here is the fragment of the package.json:

{
  "name": "oneui-vue-edition",
  "version": "1.6.0",
  "scripts": {...},
  // Dependency information...
}

The import statement for the component in question within my main.ts:

import TroubledComponent from '@/components/TroubledComponent'

A snippet showcasing the structure of the troubled component:

<template>
  <component>
    ...content
  </component>
</template>

<script>
export default {
  name: 'TroubledComponent',
  props: {
    // properties
  },
  methods: {
    // functions
  }
}
</script>

NodeJS version being used: v14.17.6

Despite attempting various solutions, such as adding certain lines to the tsconfig.json, the error persists.

Answer №1

After much troubleshooting, I managed to resolve the issue by

  1. Executing the command vue add typescript to ensure all necessary typescript files were in place
  2. Verifying that my shims file contained the correct information : VueJS/Typescript - Cannot find module './components/Navigation' or its corresponding type declarations
  3. Adjusting my import statement from
    import TroubledComponent from '@/components/TroubledComponent'
    to
    import TroubledComponent from '@/components/TroubledComponent.vue'

For other JavaScript files, like directives, I simply needed to include "allowJs": true in my tsconfig.json.

I tried adding a declaration in modulename.d.ts for the directives, but kept receiving the error message

File ...../directives/mycrazydirective.d.ts' is not a module
. So, I decided to pause on this until I come across a better solution.

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