Template literal types in TypeScript and Visual Studio Code: An unbeatable duo

I'm encountering an issue while attempting to utilize literal types in Visual Studio Code. When following the example from the documentation,

https://i.stack.imgur.com/V6njl.png

eslint is flagging an error in the code (Parsing error: Type expected.eslint)

My setup includes TypeScript 4.3.5 (using the vscode typescript version) and VS Code version 1.52.

https://i.stack.imgur.com/riAX4.png

I have also attempted creating a .eslintrc.json file with the following contents

{
    "parserOptions": {
        "ecmaVersion": "latest",
        "sourceType": "module",
        "ecmaFeatures": {
            "jsx": true
        }
    },
    "rules": {
        "semi": "error"
    }
}

However, the linting error persists despite these efforts.

I've tried restarting VS Code, uninstalling and reinstalling the eslint plugin, but the issue remains unsolved.

What other changes or attempts should I consider?

typescriptvisual-studio-codeeslinttypescript-eslint

Answer №1

One issue you may be encountering is that ESLint, which primarily recognizes JavaScript syntax, may struggle to understand TypeScript syntax.

Based on the conversation thread, it appears that you have added @typescript-eslint/eslint-plugin and @typescript-eslint/parser as dependencies, which is a step in the right direction! However, you need to inform ESLint to utilize them.

To address this, make sure to include these settings in your ESLint configuration:

module.exports = {
  // ...
  parser: '@typescript-eslint/parser',
  plugins: ['@typescript-eslint'],
  // ...
};

You can find detailed instructions on how to do this at . This resource will guide you through setting up ESLint to handle TypeScript code effectively, along with providing useful rules for TypeScript projects.

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