Implementing features such as auto-complete or go -to-definition for a programming language is not trivial. Traditionally, this work had to be repeated for each development tool and it required a mix of expertise in both the targeted programming language and the programming language internally used by the development tool of choice.
A brilliant intuition, the Language Server Protocol , also known as LSP , changes the rules of the game. A real blessing for the Erlang community.
Erlang LS is a language server providing language features for the Erlang programming language. The server works with Emacs , VSCode , Sublime Text 3 , Vim ) and probably many more text editors and IDE which adhere to the LSP protocol.
These pages contain all the information needed to configure your favorite text editor or IDE and to work with Erlang LS. You will also find instructions on how to configure the server to recognize the structure of your projects and to troubleshoot your installation when things do not work as expected.
If you have any questions about the project, feel free to open a new issue on GitHub. You can also join the # erlang-ls channel in the Erlanger Slack if you would like to get involved or if you prefer a more informal mean of communication. All contributions are welcome, be them in the form of a bug report, a question, feedback, or code.
Read More 
GIPHY App Key not set. Please check settings