eslint-config-adidas-typescript

Basic TypeScript ESLint rules. This package replaces tslint-config-adidas because TSLint will be deprecated in favor of ESLint TypeScript.

This should be the base for every TypeScript project.

Install

npm i --save-dev eslint@9 eslint-config-adidas-typescript eslint-plugin-import@2 eslint-plugin-promise@7

Usage

Create a .eslintrc file on the root folder of the project and add the following:

{
  "extends": "adidas-typescript",
  "parserOptions": {
    "tsconfigRootDir": "."
  }
}

You can also create .eslintrc.json, .eslintrc.js or .eslintrc.yml, check ESLint documentation for details.

Additionally, you can have multiple .eslintrc files across directories, which will merge and override with the root configuration.

Running

Create a lint script in your package.json:

{
  "scripts": {
    "lint": "eslint --ext .ts src" // run the linter over our src directory, all the files ending in .ts will be analyzed
  }
}

eslint CLI provides far more options, make sure to check its documentation.

In a terminal, run:

npm run lint

The linter will run and either exit clean if there were no issues or display a report log with all the issues found and exit with error.

Overriding rules

It sometimes can happen that some rule conflicts with the code, and the latter cannot be changed/updated to match the rule.

In those cases there are plenty of options, you can disable the rule globally, partially or override the rule.

Check this ESLint section on disabling rules through comments in the code. It is not recommended, but sometimes it's inevitable.

To override, add a rules entry in your .eslintrc configuration and set any rules that should be overridden:

{
  "extends": "adidas-typescript",
  "rules": {
    // overrides "@typescript-eslint/camelcase": "error"
    "@typescript-eslint/camelcase": "off",
  }
}

Links

• ESLint
• ESLint: Configuration
• ESLint: CLI
• ESLint: Rules
• ESLint TypeScript
• TSLint in 2019
• TSLint -> ESLint roadmap
• FAQ: ESLint Peer Dependencies