Do REinvent the Wheel (DREW)

Why?

Because by analyzing and building your own implementation of the major libraries and frameworks, you gain a lot of knowledge and develop your skills as a developer.

Purpose

This project is my small sandbox where I squeeze every bit of coding inspiration when I am not developing for a company. It's my way of having code freedom and explore interesting topics, without the need to rush or develop based on deadlines.

By the end of it, it should have concepts, snippets and ideas gathered across 9 years of software engineer development mainly focused at web development. Take this repository as a constant WIP.

Disclaimer

This repository contains small utilities aimed for personal growth, do NOT use them in production unless you know what you are doing.

Probably you'll find a lot of room for improvements, PRs are welcome, but I am aiming at having small bitesize tools with simple responsibilities.

Current features

• Jasmine simplified expect function.

  Check my implementation in the tests utils file.

• Reduxy/Vuexy like state management store. It supports publish/subscribe pattern in a simple way.

  Check my implementation in the store file and of course its tests using the custom expect, describe and it functions. Check Redux official docs and Vuex official docs.

• Debounce function for rate limiting function calls.

  Check my implementation in the debounce file and its tests.

Yet to be build/ideas

• Custom Promises Implementation
• Functional Programming Utils
• String Manipulation
• Throttle Function
• Enhanced Testing Utils
• Simple Event Emitter
• Observer Pattern Implementation

Additional Ideas

Core Programming Concepts

• Linked List
• Stack & Queue
• Binary Tree
• Binary Search Tree
• Hash Table
• Trie
• Graph

Algorithms

• Sorting Algorithms
• Search Algorithms
• Graph Algorithms
• Dynamic Programming
• Recursion Utilities

JavaScript/TypeScript Specific

• Custom Iterator/Generator
• Proxy Handler
• Custom Error Classes
• Decorator Pattern
• Reflection Utils

Async Programming

• Async Queue
• Retry Logic
• Timeout Wrapper
• Debounced Promise

Memory Management

• Weak References
• Object Pool
• Lazy Loading
• Garbage Collection Simulation

Utility Libraries

Functional Programming

• Immutability Helpers
• Lens Implementation
• Monads
• Transducers
• Lazy Evaluation

String/Text Processing

• String Interpolation
• Markdown Parser
• CSV Parser
• URL Parser
• Regular Expression Builder

Date/Time

• Date Formatter
• Duration Calculator
• Timezone Handler
• Calendar Utils
• Relative Time

Number/Math

• Big Integer
• Decimal Operations
• Statistics
• Random Generators
• Unit Converter

Web Development

DOM Manipulation

• Virtual DOM
• Custom Elements
• Event Delegation
• CSS-in-JS
• Animation Framework

HTTP/Networking

• Fetch Wrapper
• Request Cache
• WebSocket Manager
• Server-Sent Events
• GraphQL Client

Storage

• Local Storage Wrapper
• IndexedDB Abstraction
• Cache Manager
• Session Manager
• Cookie Parser

Design Patterns

Creational Patterns

• Factory Pattern
• Builder Pattern
• Singleton Pattern
• Prototype Pattern
• Abstract Factory

Structural Patterns

• Adapter Pattern
• Decorator Pattern
• Facade Pattern
• Proxy Pattern
• Composite Pattern

Behavioral Patterns

• Command Pattern
• Strategy Pattern
• State Machine
• Mediator Pattern
• Chain of Responsibility

Advanced Concepts

Reactive Programming

• Observable
• Subject
• Operators
• Schedulers
• Backpressure

Concurrency

• Worker Pool
• Mutex/Semaphore
• Async Scheduler
• Rate Limiter
• Batch Processor

Validation/Parsing

• Schema Validator
• Type Guards
• Sanitizer
• Parser Combinator
• Form Validator

Testing/Development Tools

Testing Framework Extensions

• Test Runner
• Mock Server
• Spy Functions
• Snapshot Testing
• Performance Testing

Development Utilities

• Logger
• Debugger
• Profiler
• Configuration Manager
• CLI Framework

Game Development

Game Mechanics

• Game Loop
• Collision Detection
• Pathfinding
• Finite State Machine
• Entity Component System