eslint-plugin-resulto

Installation

npm install --save-dev eslint @eslint/js typescript typescript-eslint eslint-plugin-resulto

Configuration

1. Create/modify your tsconfig.json.

{
  "compilerOptions": {
    "strict": true
  }
}

2. Create/modify your ESLint configuration file, i.e. eslint.config.mjs.

import js from "@eslint/js";
import resulto from "eslint-plugin-resulto";
import ts from "typescript-eslint";

export default ts.config(
  js.configs.recommended,
  ...ts.configs.recommended,
  resulto.configs.recommended,
);

See typescript-eslint docs for more info.

Hint

In Rust it is idiomatic to assign a must-used value to a variable named _ when you want to purposely discard this value.

To make this work in TypeScript without making ESLint or tsc angry you need to:

1. Add this rule to your ESLint configuration file, i.e. eslint.config.mjs

export default ts.config({
  rules: {
    "@typescript-eslint/no-unused-vars": [
      "warn",
      {
        varsIgnorePattern: "^_",
      },
    ],
  },
});

2. Make sure you do not have noUnusedLocals set to true in tsconfig.json