@bcgov-elmsd/eslint-config/lib/rules/typescript.js

A modern ESLint configuration for JavaScript, TypeScript and React which includes the Airbnb style guide, jsx-a11y and Prettier.

module.exports = {
    extends: ["plugin:import/typescript", "plugin:@typescript-eslint/recommended", require.resolve("./final")],
    plugins: ["@typescript-eslint"],
    parser: "@typescript-eslint/parser",
    settings: {
        "import/resolver": {
            // Need this line for the eslint-import-resolver-typescript to kick in
            typescript: {}
        }
    },
    rules: {
        // https://eslint.org/docs/rules
        // TypeScript's `noFallthroughCasesInSwitch` option is more robust (https://github.com/facebook/create-react-app/issues/6906)
        "default-case": "off",
        // 'tsc' already handles this (https://github.com/typescript-eslint/typescript-eslint/issues/291)
        "no-dupe-class-members": "off",
        // 'tsc' already handles this (https://github.com/typescript-eslint/typescript-eslint/issues/477)
        "no-undef": "off",

        // https://typescript-eslint.io/rules
        "@typescript-eslint/no-empty-interface": "off",
        "@typescript-eslint/no-explicit-any": "warn",
        "@typescript-eslint/no-require-imports": "error",

        // Add TypeScript specific rules and turn off ESLint equivalents
        // https://eslint.org/docs/rules
        // https://typescript-eslint.io/rules
        "no-array-constructor": "off",
        "@typescript-eslint/no-array-constructor": "error",
        "no-redeclare": "off",
        "@typescript-eslint/no-redeclare": "error",
        "@typescript-eslint/consistent-type-assertions": "error",
        "no-shadow": "off",
        "@typescript-eslint/no-shadow": "error",
        "no-use-before-define": "off",
        "@typescript-eslint/no-use-before-define": [
            "error",
            {
                functions: false,
                classes: false,
                variables: false,
                typedefs: false
            }
        ],
        "no-unused-expressions": "off",
        "@typescript-eslint/no-unused-expressions": [
            "error",
            {
                allowShortCircuit: true,
                allowTernary: true,
                allowTaggedTemplates: true
            }
        ],
        "no-unused-vars": "off",
        "@typescript-eslint/no-unused-vars": [
            "error",
            {
                args: "none",
                ignoreRestSiblings: true
            }
        ],
        "no-useless-constructor": "off",
        "@typescript-eslint/no-useless-constructor": "error"
    }
}