Coding Practices

Code Organization

• Single responsibility: Each source file should have a clear, focused scope/purpose
• Split large files: Break files when they become large or handle too many concerns
• Type separation: Always separate types and interfaces into types.ts or types/*.ts
• Constants extraction: Move constants to a dedicated constants.ts file

Runtime Environment

• Prefer isomorphic code: Write runtime-agnostic code that works in Node, browser, and workers whenever possible
• Clear runtime indicators: When code is environment-specific, add a comment at the top of the file:

// @env node
// @env browser

TypeScript

• Explicit return types: Declare return types explicitly when possible
• Avoid complex inline types: Extract complex types into dedicated type or interface declarations

Comments

• Avoid unnecessary comments: Code should be self-explanatory
• Explain "why" not "how": Comments should describe the reasoning or intent, not what the code does

Testing (Vitest)

• Test files: foo.ts → foo.test.ts (same directory)
• Use describe/it API (not test)
• Use toMatchSnapshot for complex outputs
• Use toMatchFileSnapshot with explicit path for language-specific snapshots

Tooling Choices

@antfu/ni Commands

TypeScript Config

{
  "compilerOptions": {
    "target": "ESNext",
    "module": "ESNext",
    "moduleResolution": "bundler",
    "strict": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "resolveJsonModule": true,
    "isolatedModules": true,
    "noEmit": true
  }
}

ESLint Setup

// eslint.config.ts
import antfu from '@antfu/eslint-config'
import nuxt from './.nuxt/eslint.config.mjs'

export default antfu(
  {
    unocss: true,
    pnpm: true,
    typescript: true,
    vue: true,
    rules: {
      'vue/max-attributes-per-line': ['error', {
        singleline: { max: 1 },
        multiline: { max: 1 },
      }],
      'unused-imports/no-unused-imports': 'off',
    },
    formatters: {
      css: true,
      html: true,
      markdown: 'dprint',
    },
  },
)
  .append(nuxt())

For detailed configuration options: oq-eslint-config

Git Hooks

{
  "simple-git-hooks": {
    "pre-commit": "pnpm i --frozen-lockfile --ignore-scripts --offline && npx lint-staged"
  },
  "lint-staged": { "*": "eslint --fix" },
  "scripts": {
    "prepare": "npx simple-git-hooks"
  }
}

pnpm Catalogs

Use named catalogs in pnpm-workspace.yaml for version management:

Avoid the default catalog. Catalog names can be adjusted per project needs.

Additional tools:

• Use pnpm-workspace-utils for catalog management
• Use nip for interactive package management

References