emcc command failed - src/scanner.cc:88:32: error: character too large for enclosing character literal type
           lexer->lookahead == '\uFEFF' ||
                               ^
src/scanner.cc:89:32: error: character too large for enclosing character literal type
           lexer->lookahead == '\u2060' ||
                               ^
src/scanner.cc:90:32: error: character too large for enclosing character literal type
           lexer->lookahead == '\u200B';