import type { ExperimentMetric, ExperimentStoreResult } from "../shared/types.js";
type Failure = Extract<ExperimentStoreResult<never>, {
    ok: false;
}>;
export declare const NAME_MAX = 240;
export declare const HYPOTHESIS_MAX = 8000;
export declare const METRIC_NAME_MAX = 120;
export declare const UNIT_MAX = 64;
export declare const MEASUREMENT_MAX = 4000;
export declare const NOTE_MAX = 8000;
export declare const OWNER_MAX = 120;
export declare function failure(reason: Failure["reason"], detail: string): Failure;
export declare function isFailure<T>(value: T | Failure): value is Failure;
export declare function requiredText(value: unknown, field: string, max: number): string | Failure;
/** The Todo id's shape only. Whether that Todo exists is the store's question,
 *  because only the store holds the ledger to ask. */
export declare function normalizeTodoId(value: unknown): string | Failure;
/** Free-form, like work_items.assignee: employees are files that can be renamed
 *  or removed, and a stored experiment must not become unwritable when they are. */
export declare function normalizeOwner(value: unknown): string | Failure;
export declare function normalizeMetrics(value: unknown): ExperimentMetric[] | Failure;
export declare function normalizeHorizon(value: unknown): number | Failure;
export declare function normalizeBaseline(value: unknown, metrics: ExperimentMetric[]): Record<string, number> | Failure;
export {};
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