/**
 * Configuration resolution for the AutoFill engine.
 *
 * Turns the sparse, all-optional public {@link AutoFillConfig} into a dense
 * {@link ResolvedAutoFillConfig} with every field populated, so the rest of the
 * engine never reasons about `undefined`. Centralizing defaults here keeps
 * behavior consistent and runtime-configurable via
 * {@link AutoFillConfigurationManager.update}.
 *
 * @packageDocumentation
 */
import type { AutoFillConfig } from '../../types/autofill.types';
import { AutoFillDetectorName } from '../detectors/pattern-detector';
/**
 * Fully-populated configuration — the internal, `undefined`-free counterpart of
 * {@link AutoFillConfig}. Read-only; produce a new one via
 * {@link AutoFillConfigurationManager.update}.
 */
export interface ResolvedAutoFillConfig {
    readonly enabled: boolean;
    /** Enabled detector names (the copy fallback is always active regardless). */
    readonly detectors: ReadonlySet<AutoFillDetectorName>;
    readonly locale: string;
}
/** Every built-in detector name, used as the default enabled set. */
export declare const ALL_DETECTOR_NAMES: readonly AutoFillDetectorName[];
/** The immutable default configuration used as the base for every merge. */
export declare const DEFAULT_AUTOFILL_CONFIG: ResolvedAutoFillConfig;
/**
 * Owns the engine's resolved configuration and applies partial updates against
 * the defaults. A single instance is held by the {@link
 * import('../autofill-engine').AutoFillEngine}.
 */
export declare class AutoFillConfigurationManager {
    private config;
    /**
     * @param initial - Optional initial public config; merged over defaults.
     */
    constructor(initial?: AutoFillConfig);
    /** @returns The current fully-resolved configuration. */
    get(): ResolvedAutoFillConfig;
    /**
     * Merges `patch` over the current configuration and returns the new resolved
     * config. A provided `detectors` array replaces the enabled set (the copy
     * fallback is always retained by the registry); all other fields overwrite
     * when present.
     *
     * @param patch - Partial public config to apply.
     */
    update(patch: AutoFillConfig): ResolvedAutoFillConfig;
}
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