/**
 * Dater extends Date to provide more formating methods.
 */
export default class Dater extends Date {
    /**
     * Get date string as yyyy-mm-dd hh:mm:ss
     * @param separator
     * @returns
     */
    toLocaleString(separator?: string): string;
    /**
     * Get date string as yyyy-mm-dd
     * @param separator
     * @returns
     */
    toLocaleDateString(separator?: string): string;
    /**
     * Get time string as hh:mm:ss
     * @returns
     */
    toLocaleTimeString(): string;
}
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