Migrating Angular 4.x to Angular 5 [duplicate]

Answer 1

You need to update all angular provided packages to their latest versions as follows:

npm install typescript@2.4 --save-dev

npm install @angular/common@latest @angular/compiler@latest @angular/compiler-cli@latest @angular/core@latest @angular/forms@latest @angular/http@latest @angular/platform-browser@latest @angular/platform-browser-dynamic@latest @angular/platform-server@latest @angular/router@latest @angular/animations@latest --save

This should do all the necessary. Plus you could also update your angular cli that ships with angular 5 as standard version as follows:

npm uninstall -g @angular/cli
npm cache clean
npm install -g @angular/cli@latest

Here is the official blogpost by Angular team : https://angular-update-guide.firebaseapp.com/. This update guide will help you to migrate from any version to the latest one.

Answer 2

This website made it very easy for me. Put in your version you're upgrading from, and which one you're upgrading to. My app is simple, so it may depend on the complexity of your app.