import { Level } from './level';
import { Log } from './log';
import { Format } from './format';
export interface VaultOptions {
    level: Level;
    format: Format;
    isFormatLocked: boolean;
}
export declare abstract class Vault {
    protected level: Level;
    protected format: Format;
    protected readonly isFormatLocked: boolean;
    constructor({ level, format, isFormatLocked }: VaultOptions);
    abstract store(log: Log): void;
    protected shouldStore(log: Log): boolean;
    private getLevelImportance;
    setLevel(level: Level): void;
    setFormat(format: Format): void;
}