Add Bybit TickerData empty value (#67)

Author: eliza-eliza

Project.toml

@@ -1,6 +1,6 @@
 name = "CryptoExchangeAPIs"
 uuid = "5e3d4798-c815-4641-85e1-deed530626d3"
-version = "0.34.1"
+version = "0.34.2"
 
 [deps]
 Base64 = "2a0f44e3-6c83-55bd-87e4-b1978d98bd5f"

src/Bybit/Spot/API/Ticker.jl

@@ -43,6 +43,10 @@ struct TickerData <: BybitData
     usdIndexPrice::Maybe{Float64}
 end
 
+function Serde.isempty(::Type{<:TickerData}, x)::Bool
+  return x === ""
+end
+
 """
     ticker(client::BybitClient, query::TickerQuery)
     ticker(client::BybitClient = Bybit.Spot.public_client; kw...)