import type ServiceScope from '../ServiceScope';
import type { IServiceKey } from '../IServiceKey';
/**
 * This is a {@link ServiceScope} contract for reading the system clock.
 *
 * @remarks
 * This interface abstracts the functionality of the system time APIs
 * for usage with a {@link ServiceScope}.  For example, a unit test might replace
 * the default {@link TimeProvider} service with a mock implementation
 * that follows a manually incremented timeline, in order to ensure that
 * test failures are always repeatable.
 *
 * @public
 */
export interface ITimeProvider {
    /**
     * Returns the current date/time, similar to the Date class constructor.
     */
    getDate(): Date;
    /**
     * Returns a DOMHighResTimeStamp timing measurement, as defined by the
     * standard performance.now() API.
     */
    getTimestamp(): number;
}
/**
 * This is the default implementation of {@link ITimeProvider} that simply
 * calls the real browser APIs.
 *
 * @public
 */
export default class TimeProvider implements ITimeProvider {
    /**
     * The service key for ITimeProvider.
     */
    static readonly serviceKey: IServiceKey<ITimeProvider>;
    constructor(serviceScope: ServiceScope);
    /** {@inheritDoc ITimeProvider.getDate} */
    getDate(): Date;
    /** {@inheritDoc ITimeProvider.getTimestamp} */
    getTimestamp(): number;
}
//# sourceMappingURL=TimeProvider.d.ts.map