import { AutoMap } from '@cratis/chronicle.contracts';
import type { ContractEventType, FromRecord, RemovedWithRecord } from '../../projections/declarative/ProjectionBuilderCore.js';
import type { ChildrenDefinitionLike } from '../../projections/modelBound/childrenAndNestedBuilder.js';
import type { JsonSchema } from '../../schemas/JsonSchema.js';
/** Rejects an operation at a contract path, optionally naming the responsible declaration. */
export type RejectOperation = (path: string, reason: string, fallback?: string) => never;
/** Validates a scalar mapping into a target schema, rejecting anything outside the fixture-backed subset. */
export type CheckMapping = (modelSchema: JsonSchema, eventSchema: JsonSchema, destination: string, expression: string, path: string) => void;
/** The inputs children validation shares with root validation. */
export interface ChildrenValidationContext {
    readonly schema: JsonSchema;
    readonly rootAutoMap: AutoMap;
    readonly hasInitialModelState: boolean;
    readonly from: readonly FromRecord[];
    readonly removedWith: readonly RemovedWithRecord[];
    readonly declarationFor: (path: string) => string | undefined;
    readonly requireEventSchema: (eventType: ContractEventType, path: string) => JsonSchema;
    readonly checkMapping: CheckMapping;
    readonly reject: RejectOperation;
}
/**
 * Validates one level of children collections against the packaged-kernel fixtures
 * (`children-from-keyed`, `children-identified-removed`, `children-typed-items`,
 * `children-untyped-items`, `children-identifier-equals-key`).
 */
export declare class ProjectionChildrenCapabilities {
    /**
     * Throws for the first children operation outside the fixture-backed subset.
     * @param children - The wire `Children` section of the root definition.
     * @param context - Shared root validation state.
     */
    static validate(children: Record<string, ChildrenDefinitionLike>, context: ChildrenValidationContext): void;
}
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