This change introduces a helper function (`applyToUpdateRecorder`) that handles all known `Change` classes. The use of this helper function removes type assumptions within the schematics. Many of these assumptions caused compilation errors when strict TypeScript options are enabled.
By leveraging TypeScript's AST type guards, function parameter assumptions and casting can be removed. Many of these cases caused errors when enabling TypeScript's strict option. This is preliminary work to support enabling full TypeScript strict mode within the project.
BREAKING CHANGE: The below options have been removed as they had no effect
- `test` and `testTsconfigFileName` have been removed form the universal schematic
- `universalProject`, `name`, `outDir`, `root` and `index` have been removed from the app-shell schematic
