Code Style & Standards

Orquestra follows strict code style and quality standards to maintain a clean, consistent, and maintainable codebase.

TypeScript Best Practices

Type Safety

Orquestra uses TypeScript in strict mode for maximum type safety. Always provide explicit types:

// Good
export function validateApiKey(key: string): boolean {
  return key.length === 32;
}

// Bad
export function validateApiKey(key) {
  return key.length === 32;
}

Use interfaces for object shapes:

// Good
interface Project {
  id: string;
  name: string;
  idl: IdlDefinition;
  createdAt: Date;
}

// Bad
const project = {
  id: "123",
  name: "My Project",
  // No type definition
};

Avoid any - use unknown for truly unknown types:

// Good
function processData(data: unknown): ProcessedData {
  if (typeof data === 'object' && data !== null) {
    // Type guard before using
    return transformData(data as RawData);
  }
  throw new Error('Invalid data');
}

// Bad
function processData(data: any) {
  return transformData(data);
}

Shared Types

Define shared types in packages/shared/src/types.ts for cross-package usage:

// packages/shared/src/types.ts
export interface ApiKeyResponse {
  key: string;
  name: string;
  createdAt: string;
}

// Use in worker
import type { ApiKeyResponse } from '@shared/types';

export async function createApiKey(): Promise<ApiKeyResponse> {
  // Implementation
}

// Use in frontend
import type { ApiKeyResponse } from '@shared/types';

const keys = await fetch('/api/keys').then(r => r.json() as ApiKeyResponse[]);

Function Return Types

Always specify return types for functions:

// Good
export async function fetchProject(id: string): Promise<Project | null> {
  const result = await db.query('SELECT * FROM projects WHERE id = ?', [id]);
  return result.length > 0 ? result[0] : null;
}

// Bad
export async function fetchProject(id: string) {
  const result = await db.query('SELECT * FROM projects WHERE id = ?', [id]);
  return result.length > 0 ? result[0] : null;
}

Null Safety

Handle null/undefined explicitly:

// Good
function getUserName(user: User | null): string {
  return user?.name ?? 'Anonymous';
}

// Good - explicit check
if (project !== null && project !== undefined) {
  console.log(project.name);
}

// Bad - assumes non-null
function getUserName(user: User | null): string {
  return user.name; // TypeScript error in strict mode
}

TypeScript Configuration

Key settings from tsconfig.json:

{
  "compilerOptions": {
    "strict": true,                           // Enable all strict checks
    "noImplicitAny": true,                   // No implicit any types
    "strictNullChecks": true,                // Strict null checking
    "strictFunctionTypes": true,             // Strict function types
    "forceConsistentCasingInFileNames": true // Enforce consistent casing
  }
}

ESLint Configuration

Rules

Orquestra uses ESLint with TypeScript support. Key rules from .eslintrc.json:

{
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended"
  ],
  "rules": {
    "@typescript-eslint/no-unused-vars": [
      "warn",
      {
        "argsIgnorePattern": "^_"
      }
    ],
    "@typescript-eslint/explicit-function-return-types": [
      "warn",
      {
        "allowExpressions": true
      }
    ]
  }
}

Running ESLint

# Check for lint errors
bun run lint

# Auto-fix issues
bun run lint:fix

Common Patterns

Unused variables:

// Good - prefix unused parameters with underscore
function handler(_req: Request, res: Response): Response {
  return res.json({ status: 'ok' });
}

// Bad - unused parameter without prefix
function handler(req: Request, res: Response): Response {
  return res.json({ status: 'ok' });
}

Explicit return types:

// Good
export const getProject = async (id: string): Promise<Project> => {
  return await db.projects.findById(id);
};

// Allowed - expression context
const projects = data.map(item => transform(item));

Prettier Formatting

Configuration

Orquestra uses Prettier for consistent code formatting. Settings from .prettierrc:

{
  "printWidth": 100,
  "semi": true,
  "singleQuote": true,
  "tabWidth": 2,
  "trailingComma": "es5",
  "useTabs": false,
  "arrowParens": "always",
  "endOfLine": "lf"
}

Formatting Rules

Use single quotes:

// Good
const message = 'Hello, world!';
import { createProject } from './services';

// Bad
const message = "Hello, world!";
import { createProject } from "./services";

Always use semicolons:

// Good
const name = 'Orquestra';
export default router;

// Bad
const name = 'Orquestra'
export default router

Trailing commas (ES5 style):

// Good
const config = {
  name: 'orquestra',
  version: '1.0.0',
  features: ['api', 'frontend'],
};

// Bad
const config = {
  name: 'orquestra',
  version: '1.0.0',
  features: ['api', 'frontend']
};

Arrow function parens:

// Good
const double = (x) => x * 2;
const greet = (name) => `Hello, ${name}`;

// Bad
const double = x => x * 2;
const greet = name => `Hello, ${name}`;

Running Prettier

# Format all code
bun run format

# Format specific files
bun run prettier --write "packages/frontend/src/**/*.tsx"

Commit Message Format

Orquestra follows the Conventional Commits specification for clear, structured commit history.

Format

<type>(<scope>): <subject>

<body>

<footer>

Types

feat: New feature
fix: Bug fix
docs: Documentation changes
style: Code style changes (formatting, no logic change)
refactor: Code refactoring (no functional change)
perf: Performance improvements
test: Adding or updating tests
chore: Maintenance tasks (dependencies, build, etc.)
ci: CI/CD changes

Examples

Simple feature:

git commit -m "feat: add transaction builder validation"

Bug fix with scope:

git commit -m "fix(api): correct API key validation logic"

Breaking change:

git commit -m "feat(api): redesign project creation endpoint

BREAKING CHANGE: The /api/projects endpoint now requires an idl field in the request body."

Multi-line commit:

git commit -m "refactor(worker): simplify auth middleware

Extracted common authentication logic into reusable functions.
Improved error handling and added better error messages.

Closes #142"

Documentation update:

git commit -m "docs: update deployment guide with Cloudflare setup"

Dependency update:

git commit -m "chore: upgrade @solana/web3.js to v1.87.0"

Best Practices

Do:

Use imperative mood (“add” not “added” or “adds”)
Keep subject line under 72 characters
Capitalize the subject line
Don’t end subject with a period
Separate subject from body with blank line
Wrap body at 72 characters
Use body to explain what and why, not how
Reference issues and PRs in footer

Don’t:

Make vague commits like “fix stuff” or “update”
Mix multiple unrelated changes in one commit
Commit commented-out code
Include sensitive information

Commit Examples

Good commits:

feat(frontend): add project sharing functionality
fix(worker): prevent duplicate API key generation
docs(api): add examples for all endpoints
refactor(shared): extract validation utilities
test(worker): add integration tests for auth flow
perf(frontend): optimize bundle size with code splitting

Bad commits:

update stuff
fixed bug
WIP
changes
asdf

Code Documentation

JSDoc Comments

Document public APIs and complex functions:

/**
 * Validates a Solana address format
 * @param address - Base58 encoded Solana address
 * @returns true if valid, false otherwise
 * @example
 * isValidSolanaAddress('11111111111111111111111111111111') // true
 * isValidSolanaAddress('invalid') // false
 */
export function isValidSolanaAddress(address: string): boolean {
  return /^[1-9A-HJ-NP-Za-km-z]{32,44}$/.test(address);
}

Inline Comments

Explain why, not what:

// Good - explains reasoning
// Use base58 encoding to reduce URL length and improve readability
const shortId = encodeBase58(uuid);

// Bad - states the obvious
// Encode the UUID using base58
const shortId = encodeBase58(uuid);

Complex Logic

Break down complex operations:

/**
 * Process IDL and generate REST API endpoints
 */
export function generateEndpoints(idl: Idl): ApiEndpoint[] {
  // Extract all instruction definitions from the IDL
  const instructions = idl.instructions;

  // Map each instruction to a REST endpoint
  const endpoints = instructions.map((instruction) => {
    // Convert snake_case to kebab-case for URL paths
    const path = instruction.name.replace(/_/g, '-');

    // Generate request/response schemas from instruction arguments
    const schema = generateSchema(instruction);

    return {
      path: `/api/${path}`,
      method: 'POST',
      schema,
    };
  });

  return endpoints;
}

Pre-commit Checklist

Before committing, ensure:

Code follows TypeScript best practices
All ESLint warnings are resolved
Code is formatted with Prettier
Type checking passes: bun run type-check
Tests pass: bun test
Commit message follows Conventional Commits
No console.log or debugger statements
No commented-out code
Documentation updated if needed

Editor Setup

VS Code

Recommended extensions:

ESLint
Prettier
TypeScript and JavaScript Language Features

Add to .vscode/settings.json:

{
  "editor.formatOnSave": true,
  "editor.defaultFormatter": "esbenp.prettier-vscode",
  "editor.codeActionsOnSave": {
    "source.fixAll.eslint": true
  },
  "typescript.tsdk": "node_modules/typescript/lib"
}

WebStorm / IntelliJ IDEA

Enable Prettier: Settings → Languages & Frameworks → JavaScript → Prettier
Enable ESLint: Settings → Languages & Frameworks → JavaScript → Code Quality Tools → ESLint
Format on save: Settings → Tools → Actions on Save

Following these code style standards ensures a consistent, maintainable, and high-quality codebase.

Setup

Architecture

Contributing

Code Style & Standards

TypeScript Best Practices

Type Safety

Shared Types

Function Return Types

Null Safety

TypeScript Configuration

ESLint Configuration

Rules

Running ESLint

Common Patterns

Prettier Formatting

Configuration

Formatting Rules

Running Prettier

Commit Message Format

Format

Types

Examples

Best Practices

Commit Examples

Code Documentation

JSDoc Comments

Inline Comments

Complex Logic

Pre-commit Checklist

Editor Setup

VS Code

WebStorm / IntelliJ IDEA

Build docs developers (and LLMs) love

Setup

Architecture

Contributing

Documentation Index

​TypeScript Best Practices

​Type Safety

​Shared Types

​Function Return Types

​Null Safety

​TypeScript Configuration

​ESLint Configuration

​Rules

​Running ESLint

​Common Patterns

​Prettier Formatting

​Configuration

​Formatting Rules

​Running Prettier

​Commit Message Format

​Format

​Types

​Examples

​Best Practices

​Commit Examples

​Code Documentation

​JSDoc Comments

​Inline Comments

​Complex Logic

​Pre-commit Checklist

​Editor Setup

​VS Code

​WebStorm / IntelliJ IDEA

Build docs developers (and LLMs) love

TypeScript Best Practices

Type Safety

Shared Types

Function Return Types

Null Safety

TypeScript Configuration

ESLint Configuration

Rules

Running ESLint

Common Patterns

Prettier Formatting

Configuration

Formatting Rules

Running Prettier

Commit Message Format

Format

Types

Examples

Best Practices

Commit Examples

Code Documentation

JSDoc Comments

Inline Comments

Complex Logic

Pre-commit Checklist

Editor Setup

VS Code

WebStorm / IntelliJ IDEA