understand the implementation of substrate-api-sidecar

Question

I want to know the implementation of http://127.0.0.1:8080/blocks/head endpoint from (https://github.com/paritytech/substrate-api-sidecar)

I found some interface here https://github.com/polkadot-js/api/blob/master/packages/rpc-augment/src/augment/jsonrpc.ts#L85 and some implementation https://github.com/polkadot-js/api/blob/master/packages/api-derive/src/chain/getHeader.ts

but this function doesn't makes sense to me. lack of RxJS understanding I guess. can anyone give me a good direction? I want to see the actual implementation of that particular API...

Answer 1

Sure, the entry to the API is here. Then, the actual logic of it is here.