import { ServerContext } from '../server/ServerContext.js';
type LogLevel = 'debug' | 'info' | 'notice' | 'warning' | 'error' | 'critical' | 'alert' | 'emergency';
/**
* MCP-standard logging via server.sendLoggingMessage().
* Falls back to console.error() before server connection is established.
*/
export const mcpLogger = {
log(level: LogLevel, logger: string, data: unknown): void {
if (ServerContext.isInitialized()) {
ServerContext.getInstance().server
.sendLoggingMessage({ level, logger, data })
.catch(() => {
// Swallow send errors — client may have disconnected
});
} else {
console.error(`[${level.toUpperCase()}] [${logger}]`, data);
}
},
debug(logger: string, data: unknown): void {
this.log('debug', logger, data);
},
info(logger: string, data: unknown): void {
this.log('info', logger, data);
},
warning(logger: string, data: unknown): void {
this.log('warning', logger, data);
},
error(logger: string, data: unknown): void {
this.log('error', logger, data);
},
};
