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 17 → Angular 18
(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 18 requires Node.js 18.19.1+, 20.11.1+, or 22, and TypeScript 5.4 or 5.5.
Update the core framework and CLI together. This applies the official automatic migration schematics for this version.
ng update @angular/core@18 @angular/cli@18
provideExperimentalZonelessChangeDetection lets you trial zoneless apps, and event replay for SSR is available in preview. Review zone-dependent code before trying zoneless.
Angular Material 3 is stable, the build tooling is published as @angular/build, deferrable views and built-in control flow are stable, ng-content supports default/fallback content, and route redirects can be functions.
Angular 18 → Angular 19
(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 19 requires Node.js 18.19.1+, 20.11.1+, or 22, and TypeScript 5.5 up to 5.8.
Update the core framework and CLI together. This applies the official automatic migration schematics for this version.
ng update @angular/core@19 @angular/cli@19
Components, directives, and pipes are standalone by default; NgModule-based declarations must set standalone: false. Run the standalone migration, and optionally enable strictStandalone.
Incremental hydration (preview), route-level render mode (SSR/SSG/CSR), the experimental resource() API, linkedSignal, @let template variables, and HMR for styles are introduced.
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 17 to Angular 19
This plan covers the full path from Angular 17 to Angular 19 — 2 version hops and 10 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 17 → Angular 18 — 5 steps
- Angular 18 → Angular 19 — 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 17 before the first hop.
- Update third-party libraries (including Angular Material/CDK) alongside each hop, and run your tests after each one.