Doesn't work with "@typescript-eslint/parser": "6.1.0"

[IMalaniak]

After a major update of @typescript-eslint/parser there are some problems parsing types from neverthrow. While linting I've got the following:

ESLint: 8.45.0

Error: Error while loading rule 'neverthrow/must-use-result': types not available, maybe you need set the parser to @typescript-eslint/parser
Occurred while linting /packages/backend/src/app.module.ts
    at Object.create (/node_modules/eslint-plugin-neverthrow/dist/src/rules/must-use-result.js:158:19)
    at createRuleListeners (/node_modules/eslint/lib/linter/linter.js:870:21)
    at /node_modules/eslint/lib/linter/linter.js:1040:110
    at Array.forEach (<anonymous>)
    at runRules (/node_modules/eslint/lib/linter/linter.js:977:34)
    at Linter._verifyWithoutProcessors (/node_modules/eslint/lib/linter/linter.js:1330:31)
    at Linter._verifyWithConfigArray (/node_modules/eslint/lib/linter/linter.js:1706:21)
    at Linter.verify (/node_modules/eslint/lib/linter/linter.js:1412:65)
    at Linter.verifyAndFix (/node_modules/eslint/lib/linter/linter.js:1967:29)
    at verifyText (/node_modules/eslint/lib/cli-engine/cli-engine.js:254:48)
npm ERR! Lifecycle script `lint` failed with error: 
npm ERR! Error: command failed 

Setup:

• Node 18.16.0
• NPM workspace

    "@typescript-eslint/eslint-plugin": "6.1.0",
    "@typescript-eslint/parser": "6.1.0",
    "eslint": "8.45.0",
    "eslint-plugin-neverthrow": "1.1.4"

[LucasDemea]

I faced the same issue. In my case, I was missing the project: ['./tsconfig.json'] option, in my eslint config.

Here is the related part in eslint config :

parserOptions: {
    parser: '@typescript-eslint/parser',
    ecmaVersion: 2022,
    project: ['./tsconfig.json'],
    tsconfigRootDir: __dirname,
}

[tmountain]

Same issue for me:

// eslint.config.mjs
import neverthrow from "eslint-plugin-neverthrow";
import tsPlugin from "@typescript-eslint/eslint-plugin";
import parser from "@typescript-eslint/parser";

export default [
  {
    files: ["**/*.ts", "**/*.tsx"], // Apply to TypeScript files
    languageOptions: {
      parserOptions: {
        parser: '@typescript-eslint/parser',
        ecmaVersion: 2021,
        sourceType: "module",
        project: ["./tsconfig.json"],
        tsconfigRootDir: '.',
      },
    },
    plugins: {
      "@typescript-eslint": tsPlugin,
      neverthrow,
    },
    rules: {
      ...tsPlugin.configs.recommended.rules, // Use type-checked rules
      ...neverthrow.configs.recommended.rules, // Enable neverthrow recommended rules
      "no-unused-vars": "off", // Deno-friendly
      "import/no-unresolved": "off", // Ignore unresolved imports warning for Deno
    },
  },
];

eslint .
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Debugger attached.

Oops! Something went wrong! :(

ESLint: 9.19.0

Error: Error while loading rule 'neverthrow/must-use-result': types not available, maybe you need set the parser to @typescript-eslint/parser

[rubywwwilde]

@tmountain have you figured out how to use it? I believe that the newest version of eslint is not supported by this plugin

[ctsstc]

I'm assuming #19 is a duplicate.

I fought a hard battle and ended up at the same spot as you @tmountain

I'd love to utilize this eslint plugin, but it seems that there hasn't been much movement in the last 4 years for this, so I wonder if there's any active development still occuring? Someone might have to fork this.

[mdbetancourt]

Hi @ctsstc this plug-in is not maintained anymore but any pull request is welcomed

[tmountain]

@ctsstc - I found a solution. I will share it tomorrow.

[tmountain]

@ctsstc https://github.com/tmountain/eslint-plugin-neverthrow-must-use