SOURCE_FILE
  TYPE_ALIAS
    TYPE_KW "type"
    WHITESPACE " "
    NAME
      IDENT "F"
    WHITESPACE " "
    EQ "="
    WHITESPACE " "
    UNSAFE_KW "unsafe"
  WHITESPACE " "
  ERROR
    L_PAREN "("
  ERROR
    R_PAREN ")"
  ERROR
    SEMICOLON ";"
  WHITESPACE "\n"
error 15: expected `fn`
error 15: expected SEMICOLON
error 16: expected an item
error 17: expected an item
error 18: expected an item
