import { z } from 'zod';
export type PathOrLiteral = {
    path: string;
} | {
    literal: string | number | boolean | null;
};
export type Predicate = {
    op: 'eq' | 'ne' | 'lt' | 'lte' | 'gt' | 'gte';
    left: PathOrLiteral;
    right: PathOrLiteral;
} | {
    op: 'in' | 'notIn';
    value: PathOrLiteral;
    set: Array<string | number | boolean | null>;
} | {
    op: 'exists' | 'notExists';
    path: string;
} | {
    op: 'truthy' | 'falsy';
    value: PathOrLiteral;
} | {
    op: 'and' | 'or';
    args: Predicate[];
} | {
    op: 'not';
    arg: Predicate;
};
export interface PredicateContext {
    input?: unknown;
    state?: unknown;
    results?: Record<string, unknown>;
    requestContext?: unknown;
}
export declare const predicateSchema: z.ZodType<Predicate>;
export declare function readPredicatePath(path: string, ctx: PredicateContext): unknown | undefined;
/** Build a nested object containing only the listed run-record paths. */
export declare function pickAllowListedPaths(ctx: PredicateContext, paths: readonly string[]): Record<string, unknown>;
export declare function evaluatePredicate(pred: Predicate, ctx: PredicateContext): boolean;
export declare function derivePredicateLabel(pred: Predicate, maxLength?: number): string;