Learn how to write After Effects Expression Libraries (.jsx files) to share code between projects and expressions.
We have an article on the same topic on our website: https://motiondeveloper.com/blog/write-expressions-external-files/
As well as an article on expression pre-processing:
https://motiondeveloper.com/blog/expression-pre-processing/
https://motiondeveloper.com/
Twitter: https://twitter.com/modeveloper
Github: https://github.com/motiondeveloper/