import type { TCorePropositionalExpression } from "../../schemata/index.js";
export type TChildMap = Map<string, TCorePropositionalExpression[]>;
/**
 * Build a Map<parentId, children-sorted-by-position> view of the
 * expression tree. Root expressions (no parent) are left out. Children
 * sharing a position keep their input order, because the sort is stable.
 */
export declare function buildChildMap(expressions: readonly TCorePropositionalExpression[]): TChildMap;
/**
 * Map<expressionId, expression> view for quick lookup. When two
 * expressions share an id, the later one in the input wins.
 */
export declare function buildExpressionsById(expressions: readonly TCorePropositionalExpression[]): Map<string, TCorePropositionalExpression>;
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