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 10 → Angular 11
(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 11 requires TypeScript 4.0 and drops support for IE9, IE10, and IE mobile.
Update the core framework and CLI together. This applies the official automatic migration schematics for this version.
ng update @angular/core@11 @angular/cli@11
Some async test helpers and CollectionChangeRecord are deprecated. Update to the recommended TestBed patterns.
webpack 5 support is available (experimental) via a package.json resolutions entry. Hot Module Replacement can be enabled with ng serve --hmr. Automatic inline fonts and faster builds are included.
Angular 11 → Angular 12
(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 12 requires Node.js 12.14 or newer and TypeScript 4.2+.
Update the core framework and CLI together. This applies the official automatic migration schematics for this version.
ng update @angular/core@12 @angular/cli@12
Angular 12 deprecates View Engine; the framework is effectively Ivy-only going forward. Production build becomes the default for ng build, and IE11 support is deprecated.
node-sass is no longer supported. Run the Sass migration and switch your styles to dart-sass. Nullish coalescing (??) is now supported in templates.
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 10 to Angular 12
This plan covers the full path from Angular 10 to Angular 12 — 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 10 → Angular 11 — 5 steps
- Angular 11 → Angular 12 — 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 10 before the first hop.
- Update third-party libraries (including Angular Material/CDK) alongside each hop, and run your tests after each one.