Complete React guide from project setup to building a functional Todo application. Includes modern hooks, TypeScript, and best practices. Docker Setup Dockerfile 1# Build stage 2FROM node:18-alpine AS builder 3WORKDIR /app 4COPY package*.json ./ 5RUN npm ci 6COPY . . 7RUN npm run build 8 9# Production stage 10FROM …

Common code smells in TypeScript and how to fix them. Using any 1// ❌ Bad 2function process(data: any) { 3 return data.value; 4} 5 6// ✅ Good 7interface Data { 8 value: string; 9} 10function process(data: Data) { 11 return data.value; 12} Not Using Optional Chaining 1// ❌ Bad 2const city = user && user.address …

Secure coding practices for TypeScript applications. XSS Prevention 1// ❌ Vulnerable 2function displayMessage(message: string) { 3 document.getElementById('output')!.innerHTML = message; 4} 5 6// ✅ Secure 7function displayMessage(message: string) { 8 const element = document.getElementById('output')!; 9 …

Tools for checking vulnerabilities in TypeScript/JavaScript code. npm audit 1# Check vulnerabilities 2npm audit 3 4# Fix automatically 5npm audit fix 6 7# Force fix (may break) 8npm audit fix --force 9 10# JSON output 11npm audit --json Snyk 1# Install 2npm install -g snyk 3 4# Authenticate 5snyk auth 6 7# Test project …

Complete Vue.js 3 guide from project setup to building a functional Todo application. Includes Composition API, TypeScript, and best practices. Docker Setup Dockerfile 1# Build stage 2FROM node:18-alpine AS builder 3WORKDIR /app 4COPY package*.json ./ 5RUN npm ci 6COPY . . 7RUN npm run build 8 9# Production stage …