/**
 * Reading the structural nodes that open branches: `choice`, `parallel` and
 * `map`. Each holds sequences of its own, and the end of the block is where
 * they join.
 */
import type { ChoiceNode, MapNode, NodeReading, ParallelNode } from "./node.ts";
/** A `choice`: ordered cases, each `{ when, do }`, and a `default:` that is always written. */
export declare function readChoice({ raw, id, at, faults, continueOnFail, sequence }: NodeReading): ChoiceNode | undefined;
/** A `parallel`: named branches, at least two, each a sequence. */
export declare function readParallel({ raw, id, at, faults, continueOnFail, sequence }: NodeReading): ParallelNode | undefined;
/** A `map`: a literal list with `map:`, or an address with `map-from:` and a required `max:`. */
export declare function readMap({ raw, id, at, faults, continueOnFail, sequence }: NodeReading): MapNode | undefined;
/** `ledger: <id>` opens a ledger named after the node that holds it, which is the scope a `verdict:` names. */
export declare function readLedger(value: unknown, id: string, at: string, faults: NodeReading["faults"]): boolean;
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