Angular Upgrade Planner
Pick a source and target Angular version (8–22) for an ordered, checkable upgrade plan — ng update commands, breaking changes, deprecations, and migrations.
Choose your upgrade path
Angular 8 → Angular 9
(5 steps)Commit or stash all work, then make sure you are on the latest minor/patch of your current major before running ng update. Upgrade exactly one major at a time and run the app/tests after each hop.
Angular 9 needs Node.js 10.13 or newer and TypeScript 3.6 to 3.8. Update tslib to 1.10.
Update the core framework and CLI together. This applies the official automatic migration schematics for this version.
ng update @angular/core@9 @angular/cli@9
Angular 9 switches to the Ivy rendering engine by default and runs ngcc to compile your dependencies. Expect stricter template type-checking and some changed runtime behavior; you can temporarily opt out with enableIvy: false.
ng update applies schematics such as the static flag on @ViewChild/@ContentChild and Renderer → Renderer2. Differential loading emits modern + legacy bundles based on your browserslist.
Tip: Upgrade one major at a time and run ng update for each hop — it applies the official migration schematics automatically. Commit between hops and run your tests. This is a representative checklist of the major changes; always confirm specifics against the official Angular Update Guide for your exact versions.
Upgrading Angular 8 to Angular 9
This plan covers the full path from Angular 8 to Angular 9 — 1 version hop and 5 steps in total. Upgrade one major at a time, running ng update for each hop so the official migration schematics apply. Commit and run your tests between hops.
Hops in this path
- Angular 8 → Angular 9 — 5 steps
Before you start
- Commit or stash your work and upgrade on a branch so you can roll back.
- Get on the latest minor/patch of Angular 8 before the first hop.
- Update third-party libraries (including Angular Material/CDK) alongside each hop, and run your tests after each one.