The cost to adopting a style checker (if one exists for your language) is very low. Even if one doesn't exist, they aren't very complex -- e.g. Facebook though

The cost to adopting a style checker (if one exists for your language) is very low. Even if one doesn't exist, they aren't very complex -- e.g. Facebook thought it was appropriate to create one for C++ https://code.facebook.com/posts/729709347050548/under-the-hood-building-and-open-sourcing-flint/ https://code.facebook.com/posts/729709347050548/under-the-ho... The costs are more around build process and compile time. Whereas the costs for wholesale language migration include the risk of not being able to ship or hire.