Coins 2.0 Migration

Coins 2.0 redesigns exact-money and currency APIs.

Rebuild money boundaries

Update value creation, parsing, arithmetic, formatting, serialization, and exchange integrations to use the 2.0 money, parseMoney, decimal, format, toJSON, exchange, and exchangeRate APIs.

Use currency definitions

Replace ad-hoc currency data with the 2.0 currency helpers. Use built-in currencies where applicable, or define supported currencies with defineCurrency.

Verify rounding and persistence

Recheck every rounding boundary, persisted money payload, and exchange calculation after migration. These are exact-value contracts and should not be converted through JavaScript floating-point numbers.

Review the Usage Guide and API Reference for current money, currency, and serialization contracts.