Step-by-Step: Implement Authentication with React 19, Clerk 1.0, and GitHub OAuth 2.0 This tutorial walks you through integrating secure, production-ready authentication into a React 19 application using Clerk 1.0 and GitHub OAuth 2.0. You’ll learn to configure OAuth providers, set up Clerk in your React project, and protect routes with minimal boilerplate. Prerequisites Node.js v20 or later installed locally Existing React 19 project (or create one during Step 3) Free Clerk account GitHub account for OAuth app setup Step 1: Create a Clerk Application Log in to your Clerk dashboard and click Add Application . Name your app (e.g., "React 19 Auth Demo"), then select GitHub as an authentication provider under the "Social Connections" section. Complete the setup flow to create your app. Navigate to the API Keys section of your Clerk dashboard. Copy your Publishable Key and Secret Key — you’ll need these later.…