TypeScript

A collection of lint, format, and build configs used at Fauna for TypeScript projects.

Included configs (./config/)

• eslint.config.js, a minimal base eslint config.
  • js/eslint.config.js, an extension of the base config intended for raw javascript projects.
• .gitignore, a minimal placeholder .gitignore file.
• prettierrc.js, a base prettier config. this is a stand-alone prettier config; it's not integrated into eslint (by choice). Run it before running eslint. We use eslint-config-prettier to remove eslint rules that collide with prettier, so prettier is authoritative on the formatting it can do.

Included scripts (./script/)

• eslint-formatter.js, a custom eslint output formatter intended for estimating the cost of adding new rules to an eslint config. From a consumer of @fauna/typescript, run it like npx eslint --format ./node_modules/@fauna/typescript/scripts/eslint-formatter.js ..
• version-bump.js, a script intended for use in CI environments to automatically version bump a npm package. Useful for packages that should be versioned and deployed on every merge to main.

Usage

Install

I use npm

npm install --save-dev @fauna/typescript

I use yarn

yarn add -D @fauna/typescript

Configure

ES Lint Config

In eslint.config.js put:

import { config as defaultConfig } from "@fauna/typescript/config/js/eslint.config.js";

export default [
  ...defaultConfig,
   // ...any customizations you'd like
];

Prettier Config

In prettier.config.js

import basePrettierConfig from "@fauna/typescript/config/prettierrc.js";

/**
 * @type {import("prettier").Config}
 */
const config = {
  ...basePrettierConfig,
  // ...any customizations you'd like
};

export default config;

Script

You can then write scripts in your package.json such as:

  "scripts": {
    "lint": "eslint . --fix",
    "format": "prettier -w --log-level silent .",
    "format:check": "prettier -c ."
  }