What are the reserved keywords in Elm?

Question

From time to time you get a compiler error:

It looks like the keyword `port` is being used as a variable. 

This is annoying. Is there a complete official list of these keywords? I went so far as to find where the error messages are generated , but I could not find where exactly the keywords were defined.

Meanwhile, here is probably an incomplete or incorrect list of keywords that I found by looking at the syntax page and trying the keywords in repl:

• let be
• in
• Where
• Module
• exposing
• of type
• Port
• import
• infixr
• in
• if a
• yet
• then

Answer 1

According to the source code of the elm compiler, the list of reserved keywords is :

 keywords = Set.fromList [ "if", "then", "else" , "case", "of" , "let", "in" , "type" , "module", "where" , "import", "exposing" , "as" , "port" ] 

Edit: Actually there are a few more keywords (found searching for “reserved” in the repo) I found: infix , infixl , infixr . infixr also marked OP.