import type { ReadBraceScan, ReadFolderResult, ReadFoldRange, ReadLineRange } from "./types.ts";
/** Hierarchical omitted interiors from a flat scan. Ambiguous nesting is a parse failure, not a guess. */
export declare function hierarchy(ranges: readonly ReadLineRange[]): readonly ReadFoldRange[] | undefined;
/** The single scan-to-result composition shared by every fold-boundary engine. */
export declare function composeFoldResult(text: string, scan: ReadBraceScan): ReadFolderResult;
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