JavaScript
JavaScript language features, frameworks, and libraries
TypeScriptINTERMEDIATETypeScript
TypeScript cheat sheet covering types, interfaces, generics, utility types, type guards, and advanced type system features with examples.
ReactBEGINNERReact Components & JSX
React components cheat sheet covering JSX syntax, props, conditional rendering, lists, event handling, and composition patterns.
ReactINTERMEDIATEReact Hooks
React Hooks cheat sheet with useState, useEffect, useRef, useContext, and custom hook patterns with practical code examples.
JavaScriptINTERMEDIATEAsync JavaScript
Async JavaScript cheat sheet covering Promises, async/await, error handling, Promise.all, race conditions, and concurrency patterns.
JavaScriptBEGINNERDOM Manipulation
DOM manipulation cheat sheet with selectors, event handling, element creation, traversal, and vanilla JavaScript code examples.
Node.jsINTERMEDIATENode.js Core Modules
Node.js core modules cheat sheet covering fs, http, path, crypto, streams, events, and process with practical code examples.
Node.jsINTERMEDIATEExpress.js
Express.js cheat sheet with routing, middleware, request handling, error handling, and REST API patterns with Node.js code examples.
Alpine.jsBEGINNERAlpine.js
Alpine.js cheat sheet with directives, x-data, x-bind, x-on, transitions, and code examples for building lightweight interactive UIs.
ReactADVANCEDReact Custom Hooks
React custom hooks cheat sheet with patterns for state management, data fetching, debounce, and reusable logic with code examples.
Node.jsINTERMEDIATEExpress.js REST API
Express REST API cheat sheet covering routing, middleware, database integration, authentication, error handling, and testing patterns.
JavaScriptINTERMEDIATEJavaScript Regular Expressions
JavaScript regex cheat sheet with pattern syntax, flags, lookaheads, capture groups, common patterns, and practical code examples.
BunINTERMEDIATEBun
Complete reference for Bun — the all-in-one JavaScript/TypeScript runtime, package manager, bundler, and test runner
NPMINTERMEDIATENPM Package Manager
NPM cheat sheet covering package.json config, dependency management, scripts, publishing, workspaces, and CLI command reference.
JestINTERMEDIATEJest
Jest cheat sheet with matchers, mock functions, async testing, snapshot tests, and TypeScript testing patterns with code examples.
ZodINTERMEDIATEZod
Complete reference for Zod — the TypeScript-first schema validation library with static type inference
SolidJSINTERMEDIATESolidJS
A comprehensive cheat sheet for SolidJS, the reactive JavaScript framework with fine-grained reactivity, signals, stores, and control flow components.
BiomeINTERMEDIATEBiome
Fast formatter, linter, and code-assist toolchain for JavaScript, TypeScript, JSON, CSS, GraphQL, and modern web projects.