/** @packageDocumentation
 * @module Core
 */
import { IModelDb } from "@itwin/core-backend";
import { Id64String } from "@itwin/core-bentley";
import { Diagnostics, DiagnosticsOptions, InstanceKey } from "@itwin/presentation-common";
/** @internal */
export declare function getLocalizedStringEN(key: string): string;
/** @internal */
export declare function getElementKey(imodel: IModelDb, id: Id64String): InstanceKey | undefined;
/** @internal */
export declare function normalizeVersion(version?: string): string;
/**
 * A function that received request diagnostics and, optionally, request context.
 * @public
 */
export type BackendDiagnosticsHandler<TContext = any> = (logs: Diagnostics, requestContext?: TContext) => void;
/**
 * Data structure for backend diagnostics options.
 * @public
 */
export interface BackendDiagnosticsOptions<TContext = any> extends DiagnosticsOptions {
    /**
     * An optional function to supply request context that'll be passed to [[handler]] when
     * it's called after the request is fulfilled.
     */
    requestContextSupplier?: () => TContext;
    /**
     * Request diagnostics handler function that is called after the request is fulfilled. The handler
     * receives request diagnostics as the first argument and, optionally, request context as the
     * second (see [[requestContextSupplier]]).
     */
    handler: BackendDiagnosticsHandler<TContext>;
}
/**
 * Data structure which contains backend diagnostics options.
 * @public
 */
export interface BackendDiagnosticsAttribute {
    /**
     * Backend diagnostics options.
     * @public
     */
    diagnostics?: BackendDiagnosticsOptions;
}
/** @internal */
export declare function combineDiagnosticsOptions(...options: Array<BackendDiagnosticsOptions | undefined>): DiagnosticsOptions | undefined;
/** @internal */
export declare function reportDiagnostics<TContext>(diagnostics: Diagnostics, options: BackendDiagnosticsOptions<TContext>, context?: TContext): void;
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