import type { Parameter } from "@aws-sdk/client-ssm";
import type { IParameterStoreConfigProperties } from '../../shared/interface/config/index';
import { IConfigGetProperties } from './interface/index';
export declare class ParameterStoreConfigService {
    private readonly properties;
    private readonly parameters;
    constructor(properties: IParameterStoreConfigProperties, parameters: Array<Parameter>);
    /**
     * Retrieves the value of a parameter using the canonical structured lookup contract.
     * @param {IConfigGetProperties} properties - The lookup properties.
     * @returns {null | string} - The value of the parameter if found, or null if not found.
     */
    get(properties: IConfigGetProperties): null | string;
    /**
     * Builds the canonical SSM lookup path from module defaults and per-call overrides.
     * @param {IConfigGetProperties} properties - The per-call lookup overrides.
     * @returns {string} The canonical lookup path.
     */
    private buildLookupPath;
    /**
     * Normalizes and validates the path portion of a lookup request.
     * @param {Array<string>} path - The raw lookup path.
     * @returns {Array<string>} The normalized path segments.
     */
    private normalizePath;
    /**
     * Normalizes and validates one SSM path segment.
     * @param {unknown} segment - The raw segment value.
     * @param {string} segmentName - The segment label used in error messages.
     * @returns {string} The normalized segment.
     */
    private normalizeSegment;
    /**
     * Normalizes and validates the module defaults required by the canonical contract.
     * @returns {IResolvedModuleDefaults} The normalized defaults.
     */
    private resolveModuleDefaults;
}