What is if you open a chat on snapchat does it say typing?

As an AI language model, I do not have personal experiences or access to private data, but generally, when you open a chat on Snapchat, the other person will not get an indication that you are typing until you actually start typing a message. Once you start typing, the other person will usually see a typing indicator, such as "...", which means that you are currently typing a message. The typing indicator disappears once you stop typing for a certain amount of time. However, it is possible to turn off this feature in your Snapchat settings.