eslint-config-teppeis

ESLint shareable configs for me!

Important

This config uses new flat config style since v19.

Priority

1. Avoid "Possible Problems"
2. Enable "Suggestions" if reasonable or fixable
3. Use Prettier for stylistic formatting issues

Install

$ npm i -D eslint eslint-config-teppeis

and run npx eslint-config-teppeis --init to generate initial config files.

Usage

Load eslint-config-teppeis and export default build() in your eslint.config.js:

import { build } from "eslint-config-teppeis";
import { mocha } from "eslint-config-teppeis/configs/mocha";

export default await build(
  { base: "node18", typescript: true, esm: true },
  mocha,
  {
    ignores: ["dist", "test/fixtures"],
  },
);

Options

• base (enum, required): es2021, es2022, es2023, node18 or node20
• typescript (boolean, default false): use TypeScript
• project (boolean|string|srting[], default false): the property of parserOptions to enable linting with type information
• esm (boolean, default false): treat .js and .ts as ESM for a project that configures type:module in package.json

Configs for customization

Pure ECMAScript

Configs for ECMAScript versions

import { es2021 } from "eslint-config-teppeis/configs/es2021";

export default [es2021];

• es2021
• es2022
• es2023

Node.js

Configs for Node versions

• node18 (v18.18+ Maintenance)
• node20 (v20.9+ Active LTS)

import { node18 } from "eslint-config-teppeis/configs/node18";

export default [node18];

TypeScript

Configs for TypeScript

• typescript: Enable rules that don't require type information
• typescriptTypeChecked: Require type information

import { node18, typescript } from "eslint-config-teppeis/configs";

export default [node18, typescript];

ES Modules

By default, only *.mjs and *.mts are treated as ES Modules in configs for Node.js. If you use type:module in package.json, use esm: true like:

import { build } from "eslint-config-teppeis";

export default build({ base: "node18", esm: true });

Browsers

This enables globals for browsers.

import { es2023, browser } from "eslint-config-teppeis/configs";

export default [es2023, browser];

Mocha

This enables globals for Mocha like describe or it only in **/test/*.js.

import { es2023, mocha } from "eslint-config-teppeis";

export default [es2023, mocha];

Note: Prettier

Just intall prettier and use it with eslint-config-teppeis. These configs don't include rule settings that conflict with Pretteir.

License

Licensed under the MIT license. Copyright (c) 2023, Teppei Sato