/**
 * Is a path required to exist in a checkout at all?
 *
 * The dominant false positive on `dead-reference` was never a stale comment: it
 * was a correct reference to a file git is told not to track. Ranked over this
 * repository, the top twelve "dead" citations were `.claude/settings.local.json`,
 * `.peaks/_runtime/session.json`, `.peaks/.session.json`,
 * `.peaks/_runtime/active-skill.json`, `.codegraph/config.json`,
 * `.peaks/preferences.json` and friends — all generated state, all named
 * correctly by the code that writes them.
 *
 * So the probe answers "exists OR ignored", and the ignore reading is deliberately
 * bounded: trailing-slash prefixes, whole-path entries, and bare-basename entries.
 * That limit has a direction, and the direction is the safe one — a rule
 * `.gitignore` expresses fancily (negation, `**`, character classes) is NOT read
 * here, so such a path stays reported. A missed exemption is a finding a human
 * reads and dismisses; a phantom exemption is a silent false green in a gate that
 * exists to catch claims that outlived their referent.
 */
type IgnoreRules = {
    /** Directory rules: match the path and everything below it. */
    readonly prefixes: readonly string[];
    /** File rules written with a slash: match that exact repo-relative path. */
    readonly exact: ReadonlySet<string>;
    /** Basename rules: match that name in any directory. */
    readonly basenames: ReadonlySet<string>;
};
/** True when `.gitignore` says this repo-relative path need not be on disk. */
export declare function isIgnoredPath(relPath: string, rules: IgnoreRules): boolean;
/**
 * Build the existence probe a scan should use: a real filesystem lookup, widened
 * by the repository's own ignore list read from its root.
 *
 * The second export below is the deliberate exception. "Is this an installed
 * package name?" must NOT be widened by the ignore list, because `node_modules` is
 * itself ignored — an ignore-aware probe answers yes for every first segment, and
 * the whole `dead-reference` count collapses to zero while looking perfectly
 * healthy.
 */
export declare function createRepoProbe(repoRoot: string): (relPath: string) => boolean;
/** Filesystem-only existence, for questions where "git ignores it" is no answer. */
export declare function createFsProbe(repoRoot: string): (relPath: string) => boolean;
export {};