import { FirestoreModelFieldValueConverter, ModelFieldValueConverter } from "../model_field_value_converter";
import { Timestamp } from "firebase-admin/firestore";
/**
 * ModelTimestamp ModelFieldValueConverter.
 *
 * ModelTimestamp用のModelFieldValueConverter。
 */
export declare class ModelTimestampConverter extends ModelFieldValueConverter {
    /**
     * ModelTimestamp ModelFieldValueConverter.
     *
     * ModelTimestamp用のModelFieldValueConverter。
     */
    constructor();
    type: string;
    convertFrom(key: string, value: any, original: {
        [field: string]: any;
    }): {
        [field: string]: any;
    } | null;
    convertTo(key: string, value: any, original: {
        [field: string]: any;
    }): {
        [field: string]: any;
    } | null;
}
/**
 * Create Timestamp from microseconds.
 *
 * マイクロ秒からTimestampを作成します。
 *
 * @param microseconds
 * Microseconds.
 *
 * マイクロ秒。
 *
 * @returns {Timestamp}
 * Timestamp.
 *
 * Timestamp。
 */
export declare function createTimestampFromMicroseconds(microseconds: number): Timestamp;
/**
 * FirestoreConverter for [ModelTimestamp].
 *
 * [ModelTimestamp]用のFirestoreConverter。
 */
export declare class FirestoreModelTimestampConverter extends FirestoreModelFieldValueConverter {
    /**
     * FirestoreConverter for [ModelTimestamp].
     *
     * [ModelTimestamp]用のFirestoreConverter。
     */
    constructor();
    type: string;
    convertFrom(key: string, value: any, original: {
        [field: string]: any;
    }, firestoreInstance: FirebaseFirestore.Firestore): {
        [field: string]: any;
    } | null;
    convertTo(key: string, value: any, _original: {
        [field: string]: any;
    }, firestoreInstance: FirebaseFirestore.Firestore): {
        [field: string]: any;
    } | null;
}