/// Enum of token types, corresponding to AST token types.
enum UnlinkedTokenType {
  NOTHING,
  ABSTRACT,
  AMPERSAND,
  AMPERSAND_AMPERSAND,
  AMPERSAND_EQ,
  AS,
  ASSERT,
  ASYNC,
  AT,
  AWAIT,
  BACKPING,
  BACKSLASH,
  BANG,
  BANG_EQ,
  BANG_EQ_EQ,
  BAR,
  BAR_BAR,
  BAR_EQ,
  BREAK,
  CARET,
  CARET_EQ,
  CASE,
  CATCH,
  CLASS,
  CLOSE_CURLY_BRACKET,
  CLOSE_PAREN,
  CLOSE_SQUARE_BRACKET,
  COLON,
  COMMA,
  CONST,
  CONTINUE,
  COVARIANT,
  DEFAULT,
  DEFERRED,
  DO,
  DOUBLE,
  DYNAMIC,
  ELSE,
  ENUM,
  EOF,
  EQ,
  EQ_EQ,
  EQ_EQ_EQ,
  EXPORT,
  EXTENDS,
  EXTERNAL,
  FACTORY,
  FALSE,
  FINAL,
  FINALLY,
  FOR,
  FUNCTION,
  FUNCTION_KEYWORD,
  GET,
  GT,
  GT_EQ,
  GT_GT,
  GT_GT_EQ,
  GT_GT_GT,
  GT_GT_GT_EQ,
  HASH,
  HEXADECIMAL,
  HIDE,
  IDENTIFIER,
  IF,
  IMPLEMENTS,
  IMPORT,
  IN,
  INDEX,
  INDEX_EQ,
  INT,
  INTERFACE,
  IS,
  LATE,
  LIBRARY,
  LT,
  LT_EQ,
  LT_LT,
  LT_LT_EQ,
  MINUS,
  MINUS_EQ,
  MINUS_MINUS,
  MIXIN,
  MULTI_LINE_COMMENT,
  NATIVE,
  NEW,
  NULL,
  OF,
  ON,
  OPEN_CURLY_BRACKET,
  OPEN_PAREN,
  OPEN_SQUARE_BRACKET,
  OPERATOR,
  PART,
  PATCH,
  PERCENT,
  PERCENT_EQ,
  PERIOD,
  PERIOD_PERIOD,
  PERIOD_PERIOD_PERIOD,
  PERIOD_PERIOD_PERIOD_QUESTION,
  PLUS,
  PLUS_EQ,
  PLUS_PLUS,
  QUESTION,
  QUESTION_PERIOD,
  QUESTION_QUESTION,
  QUESTION_QUESTION_EQ,
  REQUIRED,
  RETHROW,
  RETURN,
  SCRIPT_TAG,
  SEMICOLON,
  SET,
  SHOW,
  SINGLE_LINE_COMMENT,
  SLASH,
  SLASH_EQ,
  SOURCE,
  STAR,
  STAR_EQ,
  STATIC,
  STRING,
  STRING_INTERPOLATION_EXPRESSION,
  STRING_INTERPOLATION_IDENTIFIER,
  SUPER,
  SWITCH,
  SYNC,
  THIS,
  THROW,
  TILDE,
  TILDE_SLASH,
  TILDE_SLASH_EQ,
  TRUE,
  TRY,
  TYPEDEF,
  VAR,
  VOID,
  WHILE,
  WITH,
  YIELD,
  INOUT,
  OUT,
}