We have JSON ABIs put in src/abi folder. On running npm run parse-abis, generated code will land into src/generated.
Both ABIs and generated code are meant to be pushed with the rest of the source code. That is why, both are located in the src folder. Examples of usage are also located there.
You would only need to run npm run parse-abis, when new ABI's arrive. E.g. in the process of development of the contracts.
(i) All examples are based on a PSP22 token contract ABI.
(!) This code is not meant to be run. It only serves to display a type system and usage of the generated code.