import { type SettingKey, type SettingSnapshotEntry, type Settings } from './settings-spec.js';
export { SETTINGS_SPEC, type SettingKey, type SettingSnapshotEntry, type Settings, } from './settings-spec.js';
export type SettingsChangeCallback = (changedKeys: SettingKey[]) => void;
export declare function validateSettingsOverrides(value: unknown): asserts value is Record<string, unknown>;
export declare function resolveSettingsSnapshot(overrides: Record<string, unknown>, env?: NodeJS.ProcessEnv): SettingSnapshotEntry[];
export declare function resetSettingsForTests(): void;
export declare function getSettings(): Settings;
export declare function getSettingsSnapshot(): SettingSnapshotEntry[];
export declare function onSettingsChange(callback: SettingsChangeCallback): () => void;
export declare function updateSettings(partial: Partial<Settings>): Promise<void>;