Tips for getting Visual Studio Code to display warning indicators for unused parameters

Can VS Code be configured to highlight unused parameters? I am currently working on a Vue component using TypeScript.

The editor successfully highlights unused imports:
https://i.sstatic.net/sWg9D.png

However, it does not seem to detect unused properties:
https://i.sstatic.net/bVBKu.png

I have tried adding the following settings to my settings.json file, but it did not solve the issue.

"editor.showUnused": true,
"workbench.colorCustomizations": {
    "editorUnnecessaryCode.border": "#ff0000"
}

Here is an example of a Vue component:

import Vue from 'vue';
import { Component } from 'vue-property-decorator';

@Component
    export default class VueComponentExample extends Vue {

    bla: boolean = false;
  
}
</script>
typescriptvue.jsvisual-studio-codefrontend

Answer №1

When working with TypeScript, you have the option to leverage the noUnusedParameters tsconfig setting. This setting helps identify unused parameters within functions, as explained in the documentation:

Report errors on unused parameters in functions.

To enable this feature in your project, you can include the following configuration in your tsconfig.json file:

{
  ...
  "compilerOptions": {
    ...
    "noUnusedParameters": true,
    ...
  }
  ...
}

Alternatively, another approach mentioned by @exampleUser is to utilize ESLint for a similar outcome. For instructions on setting up ESLint and some helpful tips, you can refer to React - ESLint + Airbnb + Prettier.

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