The payment-input gate (well-tested by Phase 1) migrates to TypeScript as
a .cts (CommonJS) module: keeps require/module.exports, imports the branded
Cents type from money.mts, and casts the require(esm) result so toCents/
fromCents keep their branded signatures. This proves the low-churn path for
the ~90 remaining CJS services/routes (no require→import rewrite needed).
Both server-TS patterns now proven end-to-end: .mts (ESM, type-source) +
.cts (CJS). typecheck:server clean; suite 225 + probe 17/17.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
Pure-function coverage of the validator that normalizes dollars→cents and
rejects bad input before it touches a balance: required-field errors +
field tag, dollars→cents conversion, positive-amount enforcement (rejects
0/negative/non-numeric; documents the intentional lack of an upper bound),
real-calendar-date validation (Feb 30 / month 13), payment_source
whitelist, and the require* option matrix. Suite 215 green.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
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