/**
 * Registration seam for an OpenTelemetry SDK.
 *
 * Core emits spans and metrics through structural provider interfaces and never
 * depends on the SDK or an exporter. A host (for example `@agent-native/otel`)
 * builds the SDK providers and hands them to core here. With nothing
 * registered, metrics are no-ops and tracing falls back to the global
 * `@opentelemetry/api` provider.
 *
 * `forceFlush()` is optional on both providers. When present, core calls it on
 * the awaited response hook, because serverless functions freeze between
 * invocations and a periodic export timer never fires.
 */
export interface ObservabilityTracerProvider {
    getTracer(name: string, version?: string): unknown;
    forceFlush?(): Promise<void>;
}
export interface ObservabilityMeterProvider {
    getMeter(name: string, version?: string): unknown;
    forceFlush?(): Promise<void>;
}
export interface ObservabilityProvider {
    tracerProvider?: ObservabilityTracerProvider;
    meterProvider?: ObservabilityMeterProvider;
}
/**
 * Register the process's OpenTelemetry providers. A later registration
 * replaces an earlier one. Returns a function that unregisters this provider
 * if it is still the registered one.
 */
export declare function registerObservabilityProvider(provider: ObservabilityProvider): () => void;
export declare function getRegisteredObservabilityProvider(): ObservabilityProvider | undefined;