eslint-config-typescript

These are my preferred Typescript code style linting rules. You'll probably hate them.

Idea behind these

No tricks, no magic, no useless code, no complicated code. Very opinionated about all these spaces, quotes, parentheses. A bit of sanity applied, but not too much.

Installation

Installation steps assumes you've already configured base eslint config, ie: installed my base rules.

npm i @typescript-eslint/eslint-plugin @typescript-eslint/parser typescript @dzek69/eslint-config-typescript --save-dev

In your .eslintrc file add the rules in extends array:

{
  "extends": [
    "@dzek69/eslint-config-typescript"
  ]
}

It will automatically set parser, define proper plugin and set parserOptions.project to "./tsconfig.json" (please change if needed).

Then to lint src and test directories with subdirectories run:

npx eslint src test --ext .ts,.tsx,.js,.jsx,.mjs

Test files issues

If eslint complains on your test files being outside of your app source code dir please set some special .tsconfig with proper include property set, see this.

Usage with eslint import plugin

If you are using import plugin then disable @typescript-eslint/no-duplicate-imports rule. Base no-duplicate-imports is disabled already by using my TS config.

Full config example

{
    "extends": [
        "@dzek69/eslint-config-base",
        "@dzek69/eslint-config-typescript"
    ],
    "env": {
        "node": true
    },
    "parserOptions": {
        "sourceType": "module",
        "project": "./tsconfig.lint.json"
    },
    "ignorePatterns": [],
    "overrides": [
        {
            "files": [
                "src/*.spec.*", "src/**/*.spec.*"
            ],
            "env": {
                "jest": true
            },
            "rules": {
                "func-names": "off",
                "global-require": "off",
                "max-lines": "off",
                "max-lines-per-function": "off",
                "max-statements": "off",
                "@typescript-eslint/no-empty-function": "off",
                "@typescript-eslint/no-magic-numbers": "off",
                "no-unused-labels": "off"
            }
        }
    ]
}

License

MIT