Typescript Migration: Tests

[theodorehreuter]

Related Issue(s):

• TypeScript Migration #206

Proposed Changes:

Converting the tests to Typescript. This was done with having Claude doing a major first pass and then reviewing myself, after doing all the other work of building and honing types through the other PRs of the typescript migration, and then let claude rip on the tests.

This is the final PR that completes the typescript migration of stac-server.

A significant amount of the diff is minor linting changes required by typescript, though some changes were also necessitated by changing noImplicitAny: false to true which turned up some additional typescript errors around the repo that required some minor changes, particularly in database.ts. Keeping in line with the rest of the migration there are no changes to business logic.

PR Checklist:

• [ x] I have added my changes to the CHANGELOG

[matthewhanson]

Reviewed and verified — approving. This completes the TypeScript migration (#206).

Coverage preserved: counted test declarations both sides — 257 cases on main and 257 on this branch, zero per-file mismatches. The large line deltas (search-post -737, aggregate -672) are pure reformatting, not dropped tests.

"No business logic changes" holds up. The source edits are type annotations, casts, and non-null assertions. The two non-trivial spots are behavior-equivalent: the context-extension blocks refactored from if to object-spread, and two defensive if (!operatorsObject) return guards in database.ts that can't trigger (keys come from Object.keys). Nice wins: removing // @ts-nocheck from app.ts and flipping noImplicitAny: true.

Verified locally on the merged result (main + this branch): audit-prod ✓, lint ✓, typecheck (both tsconfig + tsconfig.test) ✓, check-openapi ✓, unit (69) ✓, system (171) ✓, build ✓.

Minor, non-blocking (fine to address in a follow-up):

• @ts-ignore → @ts-expect-error (database.ts ×2, geo-utils.ts ×1) so they self-remove when no longer needed.
• types.ts now imports OP from database.ts while database.ts imports from types.ts — a circular reference. Safe here (type-only typeof OP, elided at emit, typecheck passes), but import type/a shared constants module would be cleaner.
• tsconfig.test.json relaxes noImplicitAny back to false for tests — pragmatic, just a conscious trade-off.
• Comment typo in getCollections: "adding 'context' this to the Collections response".

I merged main into the branch to resolve the .nsprc conflict from #1118 (took main's now-empty .nsprc, since #1118's lockfile update cleared the advisories this PR was excluding).