Paul Pietzko

<figure><img alt="" src="https://cdn-images-1.medium.com/max/1024/1*b1gBItY2lG4jjMVMYFb1sw.png"></figure><p>Quick info before you start. Angular updates can vary a lot. If your CLI indicates that you need different versions of Node or other frameworks, follow that advice, even if it differs from this guide. Also, make full use of the Angular <a href="https://angular.dev/update-guide">Update Guide</a>. This guide just complements the official guide with additional information and migration scripts.</p> <h3>Preparation</h3> <ol> <li>Check which version of @angular/core you are currently using in package.json</li> <li>Install the dependencies and start the project (make sure everything works on your machine as expected)</li> <li>Use the Angular <a href="https://angular.dev/update-guide">Update Guide</a>. Start at your version and work your way up — one version at a time.</li> <li>If the your updating only a small project you might want to create a new project with the latest Angular version and copy the files to it (this saves a lot of hustle).</li> </ol> <h3>Final Steps (Latest Version)</h3> <ol> <li>cleanup polyfills (go zoneless)</li> <li>create the .visualstudio folder</li> <li>update the <a href="https://angular.dev/reference/configs/workspace-config">angular.json</a> to the new builder etc.</li> </ol> <h3>Angular 18 to 19</h3> <ol> <li>Install Node v18.20 or use NVM:<br><em>nvm use 18.20</em> </li> <li>Install Typescript v5.5<br><em>npm i typescript@5.5</em> </li> <li>Ins...