Lab B2b: Upgrade Angular 16 → 17 with all dependencies

[devin-ai-integration]

Summary

Bumps all Angular-ecosystem dependencies from v16 to v17, along with companion upgrades to RxJS (6 → 7), zone.js (0.13 → 0.14), and TypeScript (4.9 → 5.4). No source code, templates, or config files (angular.json, tsconfig.json) were modified — only package.json and a regenerated package-lock.json.

Key version changes:

Package	Before	After
@angular/core (+ all Angular pkgs)	16.2.1	17.3.12
@angular/material / cdk	16.2.1	17.3.10
@angular/cli	16.2.0	17.3.10
@angular-eslint/*	16.1.0	17.5.3
rxjs	^6.3.1	^7.8.1
zone.js	~0.13.1	~0.14.4
typescript	4.9.5	5.4.5

Review & Testing Checklist for Human

• Run ng build — no source code was modified alongside these dependency bumps. Verify the project actually compiles. Angular 17 and TypeScript 5.4 may surface new type errors or deprecation-turned-errors that aren't addressed here.
• RxJS 6 → 7 breaking changes — this is a major version jump. Check whether the app uses any removed/changed APIs (e.g., throwError(value) → throwError(() => value), removed pluck operator, toPromise() deprecated). Grep src/ for affected patterns; no migration was applied.
• Angular Material compatibility — Angular Material 17 completed the MDC migration. Verify that Material components render correctly (theming, styling, component APIs). Run the app and visually inspect key pages.
• angular.json / tsconfig.json not updated — Angular 17 may expect updated config (e.g., new builder options, esbuild-based builder). Verify whether the existing configs work as-is or need updates.
• Run ng serve and smoke-test the UI — confirm the app starts, pages load without console errors, and core flows (view pets, owners, vets) work end-to-end.

Notes

• The package-lock.json was fully regenerated (lockfileVersion 2 → 3), so all transitive dependency versions changed. This is expected when doing a major Angular upgrade with a fresh npm install.
• The upgrade was done via manual package.json edits rather than ng update schematics, so any automatic code migrations (e.g., for deprecated APIs) were not applied.
• This is part of a workshop exercise (Lab B2b: Upgrade EOL Systems to LTS).

Link to Devin session: https://partner-workshops.devinenterprise.com/sessions/39ff67b811214ce5b8f2c85390bffcbe

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✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 3 additional findings.