/**
 * Installs NightWatch into a project's `.claude/settings.json` hooks. The
 * merge is idempotent (re-running `init` never duplicates entries) and
 * preserving (existing hooks from other tools are never touched). Detection
 * is by command substring so users can customize flags without re-triggering
 * installation.
 */
export declare const HOOK_COMMAND = "npx --no-install nightwatch hook";
export interface InstallResult {
    readonly settingsPath: string;
    readonly added: readonly string[];
    readonly alreadyPresent: readonly string[];
}
export declare function installHooks(projectRoot: string): InstallResult;
export interface UninstallResult {
    readonly settingsPath: string;
    readonly removed: readonly string[];
}
/** Exact inverse of installHooks: ours go, every foreign hook stays untouched. */
export declare function uninstallHooks(projectRoot: string): UninstallResult;
/** Hook events that currently carry a NightWatch entry (doctor uses this). */
export declare function installedHookEvents(projectRoot: string): readonly string[];