import type { AuditTask, RepoManifest } from "../types.js";
/**
 * Sentinel line-count value marking a file as UNMEASURED (a read failure, or —
 * via {@link isUnmeasuredLineCount} — a key entirely absent from the index),
 * distinct from a genuine zero-line file (CP-NODE-6). Deliberately stays within
 * the `number` domain (`Record<string, number>` is unchanged as the index's
 * shape, so no consumer's type signature needs to change to read it) while
 * every ordinary numeric comparison against it (`=== 0`, `<= 1`, `> 0`) is
 * `false` by IEEE 754 definition — an unmeasured entry can never be silently
 * read as a genuine empty file by an unaware call site. A schema-validated
 * contract field that can only ever hold a real count (`AuditTask.file_line_counts`,
 * `z.number().int().min(0)`) must never persist this value — see
 * `addFileLineCountHints` below, which is the boundary that degrades it to 0
 * before the value crosses into that schema-constrained artifact.
 */
export declare const UNMEASURED_LINE_COUNT: number;
/**
 * True when `value` denotes "unmeasured" rather than a genuine line count:
 * either the key is entirely ABSENT from the index (`undefined` — e.g. a
 * caller queries a path the index was never built for, or a normalization
 * mismatch against the index's key form) or present but marked
 * {@link UNMEASURED_LINE_COUNT} (a read failure). A real zero-line file reads
 * as `0`, which is neither. Prefer this predicate over a bare `?? 0` fallback
 * so a read failure or a missing key is never silently treated as a genuine
 * empty file — the distinction is a VALUE this module emits, not a habit each
 * call site must remember to reimplement (CP-NODE-6).
 */
export declare function isUnmeasuredLineCount(value: number | undefined): boolean;
export declare function buildLineIndex(root: string, repoManifest: RepoManifest): Promise<Record<string, number>>;
export declare function buildLineIndexForPaths(root: string, paths: string[]): Promise<Record<string, number>>;
export declare function addFileLineCountHints(root: string, tasks: AuditTask[]): Promise<AuditTask[]>;
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