/**
 * @since 1.0.0
 */
import type * as DataSource from "@effect/query/DataSource";
import type * as Request from "@effect/query/Request";
/**
 * @since 1.0.0
 * @category symbols
 */
export declare const QueryFailureTypeId: unique symbol;
/**
 * @since 1.0.0
 * @category symbols
 */
export type QueryFailureTypeId = typeof QueryFailureTypeId;
/**
 * A `QueryFailure` keeps track of details relevant to query failures.
 *
 * @since 1.0.0
 * @category models
 */
export interface QueryFailure {
    readonly [QueryFailureTypeId]: QueryFailureTypeId;
    readonly _tag: "QueryFailure";
    readonly dataSource: DataSource.DataSource<unknown, unknown>;
    readonly request: Request.Request<unknown, unknown>;
    message(): string;
}
/**
 * Returns `true` if the specified value is a `QueryFailure`, `false` otherwise.
 *
 * @since 1.0.0
 * @category refinements
 */
export declare const isQueryFailure: (u: unknown) => u is QueryFailure;
/**
 * Constructs a new `QueryFailure` from the specified data source and request.
 *
 * @since 1.0.0
 * @category constructors
 */
export declare const make: (dataSource: DataSource.DataSource<unknown, unknown>, request: Request.Request<unknown, unknown>) => QueryFailure;
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