import type { FieldOrigin, QueryTreeVariableOrigins } from '../database/database-adapter.js';
import type { FieldSelection } from '../graphql/query-distiller.js';
/**
 * Collects which GraphQL field each query tree variable has been created for
 *
 * Variables are identified by their index (VariableQueryNode.index). Because indices are assigned
 * in ascending order, the variables created while building the query node of a field form a
 * contiguous range. The ranges of nested fields are contained in the range of their parent field.
 */
export declare class VariableOriginRecorder implements QueryTreeVariableOrigins {
    private readonly originsByVariableIndex;
    /**
     * Records that the variables with indices in [startIndex, endIndex) have been created for the
     * innermost field of the given selection stack
     *
     * Indices that already have an origin keep it. Because a field is recorded after all its
     * child fields, this attributes each variable to the innermost field that created it.
     */
    recordField(startIndex: number, endIndex: number, selectionStack: ReadonlyArray<FieldSelection>): void;
    getOrigin(variableIndex: number): FieldOrigin | undefined;
}