> For the complete documentation index, see [llms.txt](https://developer.firmhouse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.firmhouse.com/sdks/firmhouse-sdk/reference/functions.md).

# Functions

- [Function: buildAdyenCheckoutOptions()](https://developer.firmhouse.com/sdks/firmhouse-sdk/reference/functions/build-adyen-checkout-options.md)
- [Function: buildAdyenDropinOptions()](https://developer.firmhouse.com/sdks/firmhouse-sdk/reference/functions/build-adyen-dropin-options.md)
- [Function: calculateCartTotals()](https://developer.firmhouse.com/sdks/firmhouse-sdk/reference/functions/calculate-cart-totals.md)
- [Function: mapExtraFieldsByFieldId()](https://developer.firmhouse.com/sdks/firmhouse-sdk/reference/functions/map-extra-fields-by-field-id.md)
- [Function: resolveAdyenCheckoutEntry()](https://developer.firmhouse.com/sdks/firmhouse-sdk/reference/functions/resolve-adyen-checkout-entry.md)