Establishes the server-TypeScript foundation and migrates utils/money →
utils/money.mts with branded Cents/Dollars (mirroring the client), so the
cents↔dollars boundary — the origin of the reconciliation bug class — is a
compile error for any typed server caller.
Approach (no build step): Node 25 runs .ts natively (type-stripping).
Migrated modules use the explicit-ESM .mts extension (the project is
"type":"commonjs", which disables .ts ESM auto-detection) and are required
from the CJS callers via Node's require(esm) — verified working. Infra:
tsconfig.server.json (allowJs + checkJs:false → incremental like the
client), npm run typecheck:server, check:server extended to .mts, wired
into ci. 28 require sites repointed to money.mts.
typecheck:server clean; full server suite 225 + e2e probe 17/17 green.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
- utils/money: toCents rounds off the shortest decimal string instead of
Math.round(n*100), so 1.005 -> 101 (not 100). Output is identical for all
integer / <=2-decimal / "$1,234.56" inputs, so no downstream change (QA-B7-01)
- add tests/money.test.js (9 tests; the money core previously had none)
- docs: archive QA-B7-01 to HISTORY v0.41.0; QA cycle 1 now 0 open findings
Co-Authored-By: Claude Opus 4.8 <[email protected]>
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