devtools

Shared ESLint, Prettier, and Knip configuration for modern TypeScript projects.

What you get

• Consistent linting across repos
• Zero-config Prettier setup
• Shared Knip static-analysis defaults
• Bundled tool binaries for ESLint, Prettier, and Knip
• Strict TypeScript rules without compromise
• One source of truth for tooling

Features

• Flat ESLint config (latest standard)
• Preconfigured plugin ecosystem
• Prettier integration
• Shared Knip config factories
• ankhorage-eslint, ankhorage-prettier, and ankhorage-knip binaries
• Monorepo-friendly

Installation

bun add -D @ankhorage/devtools

The package owns the ESLint, Prettier, and Knip toolchain. Consuming repos should not install eslint, prettier, or knip directly unless they intentionally need a different version from the shared Ankhorage toolchain.

Usage

Scripts

Use the devtools-owned binaries in package scripts:

{
  "scripts": {
    "lint": "ankhorage-eslint . --max-warnings=0",
    "lint:fix": "ankhorage-eslint . --fix --max-warnings=0",
    "format": "ankhorage-prettier --write .",
    "format:check": "ankhorage-prettier --check .",
    "knip": "ankhorage-knip"
  }
}

ESLint

Create an eslint.config.js file:

import { createConfig } from '@ankhorage/devtools/eslint';

export default createConfig({
  files: ['src/**/*.{ts,tsx}'],
  project: ['./tsconfig.json'],
  tsconfigRootDir: import.meta.dirname,
});

Prettier

Create a Prettier config file:

export { default } from '@ankhorage/devtools/prettier';

CommonJS repos can use:

module.exports = require('@ankhorage/devtools/prettier');

Knip

Create a repo-local knip.config.ts file:

import { createKnipConfig } from '@ankhorage/devtools/knip';

export default createKnipConfig();

Repos can add narrow repo-specific patterns when needed:

import { createKnipConfig } from '@ankhorage/devtools/knip';

export default createKnipConfig({
  entry: ['scripts/release.ts'],
  project: ['scripts/**/*.ts'],
  ignore: ['fixtures/**'],
  ignoreBinaries: ['custom-tool'],
  ignoreFiles: ['examples/fixture.ts'],
});

For workspaces-based monorepos, use the monorepo preset:

import { createKnipMonorepoConfig } from '@ankhorage/devtools/knip';

export default createKnipMonorepoConfig({
  root: {
    ignoreFiles: ['.prettierrc.js', 'eslint.config.js'],
  },
});

By default, the monorepo preset configures Knip workspaces for the root package, packages/*, and apps/*. Repos can override those defaults or add extra workspace globs:

import { createKnipMonorepoConfig } from '@ankhorage/devtools/knip';

export default createKnipMonorepoConfig({
  workspaceGlobs: ['packages/*', 'apps/*', 'examples/*'],
  workspaceDefaults: {
    ignoreFiles: ['fixtures/**'],
  },
  workspaces: {
    '.': {
      ignoreFiles: ['.prettierrc.js', 'eslint.config.js'],
    },
    'apps/editor': {
      ignoreFiles: ['babel.config.js'],
      ignoreDependencies: ['babel-preset-expo'],
    },
  },
});

The shared config intentionally keeps defaults narrow so Knip can still report real unused files, exports, dependencies, and binaries. Prefer explicit entry, project, ignoreBinaries, ignoreDependencies, or ignoreFiles over broad ignores.

CI

Run the scripts in CI after dependencies are installed:

- name: Run lint
  run: bun run lint

- name: Run format check
  run: bun run format:check

- name: Run Knip
  run: bun run knip

For workflows that support optional scripts, use the same guard style as the other devtools checks:

- name: Run Knip
  run: |
    if node -e "const p=require('./package.json'); process.exit(p.scripts?.knip ? 0 : 1)"; then
      bun run knip
    else
      echo "No knip script found; skipping."
    fi

Use Cases

• Monorepos with shared standards
• Teams that want strict, predictable linting
• Projects avoiding duplicated config
• Repos that need consistent unused-file, unused-export, and dependency checks

Why this exists

Maintaining ESLint, Prettier, and Knip configs across multiple repositories leads to:

• duplication
• inconsistency
• drift over time

This package centralizes tooling so all projects stay aligned.

Scope

Includes:

• ESLint configuration and binary wrapper
• Prettier configuration and binary wrapper
• Knip configuration and binary wrapper

Excludes:

• runtime code
• build tooling