Remove import, export and default from reserved list

Author: GeoffreyBooth

src/lexer.coffee

@@ -774,6 +774,7 @@ JS_KEYWORDS = [
   'return', 'throw', 'break', 'continue', 'debugger', 'yield'
   'if', 'else', 'switch', 'for', 'while', 'do', 'try', 'catch', 'finally'
   'class', 'extends', 'super'
+  'export', 'import', 'default'
 ]
 
 # CoffeeScript-only keywords.
@@ -800,8 +801,8 @@ COFFEE_KEYWORDS = COFFEE_KEYWORDS.concat COFFEE_ALIASES
 # used by CoffeeScript internally. We throw an error when these are encountered,
 # to avoid having a JavaScript error at runtime.
 RESERVED = [
-  'case', 'default', 'function', 'var', 'void', 'with', 'const', 'let', 'enum'
-  'export', 'import', 'native', 'implements', 'interface', 'package', 'private'
+  'case', 'function', 'var', 'void', 'with', 'const', 'let', 'enum'
+  'native', 'implements', 'interface', 'package', 'private'
   'protected', 'public', 'static'
 ]