Angular Workflows

This page is the Angular-specific upgrade and change-planning workflow for teams using AI assistants on framework-heavy repositories.

Objective

Plan and execute Angular upgrades in phases, with dependency audit, breaking-change review, validation gates, and rollback defined up front.

Audience

  • frontend engineers
  • maintainers of Angular monorepos
  • team leads planning major version upgrades

When to Use

  • Angular version upgrades
  • CLI or workspace config migrations
  • template, lint, or TypeScript compatibility sweeps

When Not to Use

  • for one-file bug fixes
  • when the team has not yet picked the target version
  • when no validation gates exist for the application

Preconditions

  • current Angular, Node, and TypeScript versions are known
  • target version is chosen
  • the repo has tests, build commands, and smoke-test paths

Required Context

  • package.json and lockfile
  • Angular workspace config
  • CI build commands
  • known incompatible dependencies
  • Claude Code or Codex for dependency and repo-wide change planning
  • IDE agents for localized template or typing fixes after the plan is agreed

Step-by-Step Workflow

  1. Inventory the current Angular, CLI, TypeScript, RxJS, and Node versions.
  2. Read the official upgrade path before editing.
  3. Ask the agent for an incremental plan, not a single giant patch.
  4. Separate dependency changes, code migrations, and cleanup.
  5. Run validation gates after each phase.
  6. Record rollback points between phases.

Reusable Prompt

Plan this Angular upgrade in phases.
List current and target versions, dependency risks, likely breaking changes, validation gates, and rollback points before editing.
Then implement only phase 1.

Example Input

  • current: Angular 16 workspace
  • target: Angular 18
  • constraints: Nx monorepo, strict TypeScript, CI must stay green after each phase

Expected Agent Output

  • dependency audit
  • phase-by-phase plan
  • likely breaking areas such as builders, RxJS, linting, or test setup
  • exact validation gates for each phase

Human Review Checkpoint

  • confirm the target matrix with official Angular guidance
  • approve each phase separately
  • review generated migration commands before running them

Validation Commands

npm install
npm run build
npm test

Failure Modes

  • skipping the dependency matrix review
  • running every migration at once
  • hiding template or TypeScript regressions inside a large formatting patch

Rollback or Recovery

  • revert to the previous lockfile and workspace config
  • roll back one phase at a time
  • pause after dependency alignment if application changes are not yet safe

Completion Checklist

  • current and target versions documented
  • phase plan approved
  • each phase validated independently
  • rollback point preserved after each phase

Team Standard

Large framework upgrades must be phased, reviewable, and reversible.

Verification Note

This page is a planning and execution pattern. Exact Angular commands and compatibility matrices must be validated against the current official upgrade guidance for the target versions.

Sources