TypeScript Library Example with TypeDoc

This directory contains a TypeScript library example that demonstrates comprehensive TypeDoc documentation.

Overview

The library implements a Task Management System with the following components:

  • Task: Immutable class representing a task with status, priority, assignments, and due dates
  • TaskStatus: Enumeration of possible task statuses (PENDING, IN_PROGRESS, COMPLETED, CANCELLED)
  • TaskPriority: Enumeration of priority levels (LOW, MEDIUM, HIGH, URGENT)
  • TaskService: Interface defining operations for managing tasks
  • InMemoryTaskService: In-memory implementation of TaskService

TypeDoc Documentation Features Demonstrated

The library showcases various TypeDoc and JSDoc features:

JSDoc Tags

  • @public - Marks public API members
  • @param - Parameter descriptions with types
  • @returns / @return - Return value descriptions
  • @throws - Exception documentation
  • @example - Code examples
  • @remarks - Additional notes and context
  • @see - Cross-references (via links)
  • @inheritdoc - Inherit documentation from interface

Documentation Features

  • Type annotations: Full TypeScript type information
  • Code examples: Multiple examples per class and method
  • Parameter documentation: Detailed parameter descriptions with types
  • Return value documentation: Clear return type and description
  • Exception documentation: Documented exceptions with @throws
  • Cross-references: Links between related classes using {@link}
  • Enum documentation: Each enum constant has detailed documentation
  • Interface documentation: Clear descriptions of contracts and usage patterns
  • Package documentation: Module-level documentation with @packageDocumentation

Generating TypeDoc Documentation

Prerequisites

Install dependencies:

npm install

Or install TypeDoc globally:

npm install -g typedoc typescript

Generate Documentation

  1. Navigate to the examples/typescript directory:
cd examples/typescript
  1. Build the TypeScript code (optional, but recommended):
npm run build
  1. Generate the documentation:
npm run docs

Or directly with TypeDoc:

typedoc
  1. View the documentation:

Open docs/index.html in your web browser.

Watch Mode

For development, you can use watch mode to automatically regenerate docs:

npm run docs:serve

Documentation Structure

The TypeDoc documentation includes:

  • Index page: Overview and navigation
  • Module documentation: Auto-generated from source code
  • Class documentation: All classes with methods and properties
  • Method documentation: Parameters, return values, exceptions
  • Examples: Code examples from JSDoc comments
  • Source code links: Links to view source code
  • Search functionality: Full-text search
  • Type information: Full TypeScript type information

Example Usage

import {
    Task,
    TaskStatus,
    TaskPriority,
    InMemoryTaskService,
} from './taskmanager'

// Create a task
const task = new Task({
    title: 'Implement user authentication',
    description: 'Add JWT-based authentication to the API',
    status: TaskStatus.IN_PROGRESS,
    priority: TaskPriority.HIGH,
    assignedTo: '550e8400-e29b-41d4-a716-446655440000',
    projectId: '550e8400-e29b-41d4-a716-446655440001',
    dueDate: new Date('2024-12-31T23:59:59Z'),
})

// Use the service
const service = new InMemoryTaskService()
const created = service.createTask(task)

// Query tasks
const inProgress = service.findTasksByStatus(TaskStatus.IN_PROGRESS)
const overdue = service.findOverdueTasks()

// Update task
const updated = service.updateTaskStatus(created.id, TaskStatus.COMPLETED)

JSDoc Best Practices Demonstrated

  1. Comprehensive descriptions: Every public class, method, and parameter is documented
  2. Usage examples: Code examples show how to use the API
  3. Exception documentation: All thrown exceptions are documented with @throws
  4. Type information: Full TypeScript type annotations for better IDE support
  5. Cross-references: Use of {@link} tags for linking between classes
  6. Enum documentation: Each enum constant has detailed documentation
  7. Interface documentation: Clear descriptions of contracts and usage patterns
  8. Package documentation: Module-level documentation with examples

TypeDoc Configuration

The typedoc.json file configures:

  • Entry points: Which files to document
  • Output directory: Where to generate documentation
  • Theme: Documentation theme (default, minimal, etc.)
  • Categorization: How to organize documentation
  • Search: Enable/disable search functionality
  • Version: Include version information

Viewing Documentation

After generating documentation:

  1. Open docs/index.html in a web browser
  2. Navigate through modules, classes, and methods
  3. View formatted documentation with all JSDoc comments rendered
  4. Use the search functionality to find specific items
  5. Click "View Source" to see the source code
  6. Explore type information and inheritance hierarchies

Additional Resources

Last updated: January 09, 2026 at 10:53 PM