import type { Attributes, GenerationEvent, Span, SpanOptions, SpanResult, TelemetryProvider, Trace, TraceOptions } from "./types.js";
/**
 * Zero-cost telemetry provider. All methods are stubs that return
 * valid objects but perform no I/O. Used when telemetry is disabled
 * (the default).
 *
 * `initTelemetry()` installs this provider when `provider: "none"` (the default)
 * or when no config is supplied. Bridge, runner, and connector packages receive
 * it via constructor injection and call its methods without any guard — every
 * call is a no-op with negligible overhead.
 *
 * @docLink packages/telemetry/concepts#noop-telemetry-provider
 */
export declare class NoopTelemetryProvider implements TelemetryProvider {
    startTrace(opts: TraceOptions): Trace;
    endTrace(_trace: Trace, _result?: SpanResult): void;
    startSpan(parent: Trace | Span, _opts: SpanOptions): Span;
    endSpan(_span: Span, _result?: SpanResult): void;
    addEvent(_span: Span, _name: string, _attrs?: Attributes): void;
    logGeneration(_span: Span, _generation: GenerationEvent): void;
    recordMetric(_name: string, _value: number, _tags?: Record<string, string>): void;
    flush(): Promise<void>;
    shutdown(): Promise<void>;
}
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