Function onLog

packages/tooling/src/vite.ts:156–164

(level, log, handler)

                ],
                output: [],
                onLog(level, log, handler) {
                    switch (log.code) {
                        case 'CIRCULAR_DEPENDENCY': // ignore circular dependency warnings
                        case 'EMPTY_BUNDLE': // ignore empty bundles
                        case 'EMPTY_IMPORT_META': // rolldown's automatic `{}` substitution in non-ESM
                            return;
                    }
                    handler(level, log);
                }
            }
        }
    };