exmode: Give build-time error on bad arg types

scripts/excmds_macros.py

@@ -38,6 +38,8 @@ class Signature:
             # Type declaration
             if ':' in param:
                 name, typ = map(str.strip, param.split(':'))
+                if typ not in ('number', 'boolean', 'string', 'string[]', 'ModeName') and '|' not in typ:
+                    raise Exception("Edit me! " + typ + " is not a supported type!")
             # Default argument
             elif '=' in param:
                 name, default = map(str.strip, param.split('='))

src/parsers/exmode.ts

@@ -17,7 +17,8 @@ function convertArgs(params, argv) {
     const conversions = {
         number: convert.toNumber,
         boolean: convert.toBoolean,
-        string: (s)=>s,
+        string: s=>s,
+        ModeName: s=>s,
     }
 
     const typedArgs = []