Refactor code a bit.

Author: yaroslavyaroslav

Sources/web3swift/Promises/Promise+Web3+Eth+GetBlockByHash.swift

@@ -10,8 +10,7 @@ import BigInt
 
 extension web3.Eth {
     public func block(by hash: Data, fullTransactions: Bool = false) async throws -> Block {
-        let hashString = hash.toHexString().addHexPrefix()
-        return try await block(by: hashString, fullTransactions: fullTransactions)
+        try await block(by: hashString.toHexString().addHexPrefix(), fullTransactions: fullTransactions)
     }
 
     public func block(by hash: String, fullTransactions: Bool = false) async throws -> Block {

Sources/web3swift/Promises/Promise+Web3+Eth+GetBlockByNumber.swift

@@ -10,8 +10,7 @@ import BigInt
 
 extension web3.Eth {
     public func block(by number: UInt, fullTransactions: Bool = false) async throws -> Block {
-        let blockNumber = BlockNumber.exact(number)
-        return try await block(by: blockNumber, fullTransactions: fullTransactions)
+        try await block(by: BlockNumber.exact(number), fullTransactions: fullTransactions)
     }
 
     public func block(by number: BlockNumber, fullTransactions: Bool = false) async throws -> Block {

Sources/web3swift/Promises/Promise+Web3+Eth+GetBlockNumber.swift

@@ -10,10 +10,7 @@ import BigInt
 
 extension web3.Eth {
     public func blockNumber() async throws -> UInt {
-        let requestCall: APIRequest = .blockNumber
-
-        let response: APIResponse<UInt> = try await APIRequest.sendRequest(with: web3.provider, for: requestCall)
-
+        let response: APIResponse<UInt> = try await APIRequest.sendRequest(with: web3.provider, for: .blockNumber)
         return response.result
     }
 }

Sources/web3swift/Transaction/EthereumTransaction.swift

@@ -177,6 +177,8 @@ public struct EthereumTransaction: CustomStringConvertible {
     /// - Returns: a TransactionParameters object suitable for passing to Web3+JSONRPC provider
     public func encodeAsDictionary(from: EthereumAddress? = nil) -> TransactionParameters? { self.envelope.encodeAsDictionary(from: from) }
 
+
+    // FIXME: Move this logic into place where it supposed to be.
     /// create a JSON RPC Request object for the given transacton
     /// - Parameters:
     ///   - method: RPC request method
@@ -207,6 +209,7 @@ public struct EthereumTransaction: CustomStringConvertible {
         return self.envelope.encode(for: type)
     }
 
+    // FIXME: Move this logic into place where it supposed to be.
     /// creates a Raw RPC request transaction for the given Transaction
     /// - Parameter transaction: EthereumTransaction to encode
     /// - Returns: a JSONRPCrequest object