fiatconnect-api-starter

This repository contains a starter API that supports the FiatConnect standard.

Usage

Installing

yarn install

Building

yarn build

Configuring

You can configure the server either with command line arguments, or through a .env file in the repository root. See .env.example for an example. Check out src/config.ts for an exhaustive list of configuration options.

Running

Assuming you've filled in a .env file in the repository root, run:

yarn start

Testing

Unit tests

You can run unit tests with jest as follows:

yarn test

Integration tests

Integration tests are not included with this starter project. However, an example of how to create a Sign-In with Ethereum message for authentication is included in scripts/example-request.ts.

Structure & Schema Validation

Handlers for each of the four main groups of endpoints can be found in /src/routes. To make implementation easy, almost all request schema validation is taken care of in middleware before the handlers are called. Individual endpoint handlers will have access to type-guarded request parameters, guaranteed to be syntactically correct. (Checks on request semantics are still up to the implementor themselves.) This means that you can immediately start implementing business logic within the handlers, without worrying about validation.

The only exception to this is with endpoints whose request bodies are negotiable, i.e., POST /accounts/:fiatAccountSchema and POST /kyc/:kycSchema. Since the request body can take many different shapes, schema validation & type guarding must be performed within the route. In both cases, switch statements are included in the handlers which perform validation and type guarding. Implementors just need to write custom handling logic for each possible schema.