import Dexie, { Table } from 'dexie';
declare type Timestamp = number;
declare type LogSchema = {
    content: string;
    created_at: Timestamp;
    timestamp: string;
};
export declare class EduSDKLogger extends Dexie {
    logs: Table<LogSchema, number>;
    constructor();
    openDatabase(): void;
    readAndDeleteBy(time: number): Promise<string[][]>;
    resetByKeys(time: number): Promise<string[][]>;
}
export {};