Single configuration for all functions (best practise for typescript functions)

**Which Category is your question related to?**
Lambda

**Amplify CLI Version**
4.31.1

**What AWS Services are you utilizing?**
Lambda, Lambda Layer

**Provide additional details e.g. code snippets**
I would like to use typescript for every function in my project and from what I saw I would have to setup typescript for each function separately, also I would have to install the same packages for each function because they don't share node_modules or package.json and it bothers me because it looks like maintainability nightmare to me.

I looked at shared layers but I don't think it is what I am looking for. Is there any other possibility to keep everything together or what would be the best practise in that case?