import type { Integration } from '@sentry/types';
import type { AsyncContextStrategy } from './asyncContext/types';
/**
 * An object that contains a hub and maintains a scope stack.
 * @hidden
 */
export interface Carrier {
    __SENTRY__?: SentryCarrier;
}
interface SentryCarrier {
    acs?: AsyncContextStrategy;
}
/**
 * An object that contains a hub and maintains a scope stack.
 * @hidden
 */
export interface Carrier {
    __SENTRY__?: SentryCarrier;
}
interface SentryCarrier {
    acs?: AsyncContextStrategy;
    /**
     * Extra Hub properties injected by various SDKs
     */
    integrations?: Integration[];
    extensions?: {
        /** Extension methods for the hub, which are bound to the current Hub instance */
        [key: string]: Function;
    };
}
/**
 * Returns the global shim registry.
 *
 * FIXME: This function is problematic, because despite always returning a valid Carrier,
 * it has an optional `__SENTRY__` property, which then in turn requires us to always perform an unnecessary check
 * at the call-site. We always access the carrier through this function, so we can guarantee that `__SENTRY__` is there.
 **/
export declare function getMainCarrier(): Carrier;
/** Will either get the existing sentry carrier, or create a new one. */
export declare function getSentryCarrier(carrier: Carrier): SentryCarrier;
export {};
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