import { PonyfillItem } from '../../types';
export declare class PonyfillCollector {
    /**
     * Collects ponyfills from specified paths and search locations
     * @param userPonyfillsPaths Path(s) to custom ponyfill files
     * @param searchPaths Path(s) to search for ponyfill files
     * @returns Combined list of base and custom ponyfills
     * @throws Error if loading or searching fails
     */
    collect(userPonyfillsPaths?: string[] | string, searchPaths?: string[] | string): PonyfillItem[];
    /**
     * Loads ponyfills from a file
     * @param ponyfillsPath Path to ponyfills file
     * @returns Array of ponyfill items
     * @throws Error if file cannot be loaded or parsed
     */
    private loadPonyfills;
    /**
     * Searches recursively for ponyfill files in multiple paths
     * @param searchPaths Directories to search
     * @returns Array of ponyfill file paths
     * @throws Error if directory cannot be read
     */
    private searchPonyfillFiles;
    private searchDirectory;
    /**
     * Selects valid ponyfills from a module
     * @param ponyfills Module containing ponyfills
     * @returns Array of valid ponyfill items
     */
    private selectPonyfills;
    /**
     * Validates ponyfill items
     * @param ponyfills Array of potential ponyfill items
     * @returns Array of valid ponyfill items
     */
    private validatePonyfills;
    /**
     * Merges ponyfills, avoiding duplicates based on find property
     * @param existing Existing ponyfills
     * @param newPonyfills New ponyfills to add
     * @returns Merged array of ponyfills
     */
    private mergePonyfills;
}