/**
 * Computes the prefix string used for loggers.
 *
 * @hidden
 */
export declare class PrefixService {
    /**
     * The regex used to remove tails.
     */
    private _replacer;
    /**
     * Constructor
     */
    constructor(tails: string[]);
    /**
     * A list of tail strings.
     */
    private _tails;
    /**
     * Collection of strings that will be removed from the tail of logger prefixes.
     */
    get tails(): string[];
    /**
     * Appends string values that will be removed from prefix tails.
     */
    addTails(values: string[]): void;
    /**
     * Computes the prefix for a logger.
     */
    prefix(value?: string): string;
    /**
     * Gets the regex used to remove tails.
     */
    private _getReplacer;
}