Function isIdentifierName

docs/app/js/sanddance-app.js:143972–143974

(token)

    };
}
function isIdentifierName(token) {
    return token.type === TokenIdentifier || token.type === TokenKeyword || token.type === TokenBooleanLiteral || token.type === TokenNullLiteral;
}
function advance() {
    skipComment();
    if (index >= length) return {