angular-migration

# Angular Migration Master AngularJS to Angular migration, including hybrid apps, component conversion, dependency injection changes, and routing migration. ## Use this skill when - Migrating AngularJS (1.x) applications to Angular (2+) - Running hybrid AngularJS/Angular applications - Converting directives to components - Modernizing dependency injection - Migrating routing systems - Updating to latest Angular versions - Implementing Angular best practices ## Do not use this skill when - You are not migrating from AngularJS to Angular - The app is already on a modern Angular version - You need only a small UI fix without framework changes ## Instructions 1. Assess the AngularJS codebase, dependencies, and migration risks. 2. Choose a migration strategy (hybrid vs rewrite) and define milestones. 3. Set up ngUpgrade and migrate modules, components, and routing. 4. Validate with tests and plan a safe cutover. ## Safety - Avoid big-bang cutovers without rollback and staging validation. - Keep hybrid compatibility testing during incremental migration. ## Migration Strategies ### 1. Big Bang (Complete Rewrite) - Rewrite entire app in Angular - Parallel development - Switch over at once - **Best for:** Small apps, green field projects ### 2. Incremental (Hybrid Approach) - Run AngularJS and Angular side-by-side - Migrate feature by feature - ngUpgrade for interop - **Best for:** Large apps, continuous delivery ### 3. Vertical Slice - Migrate one feature completely - Ne...