react-native/ReactAndroid/src/main/java/com/facebook/react/common/SystemClock.java

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
 * directory of this source tree.
 */
package com.facebook.react.common;

/**
 * Detour for System.currentTimeMillis and System.nanoTime calls so that they can be mocked out in
 * tests.
 */
public class SystemClock {

  public static long currentTimeMillis() {
    return System.currentTimeMillis();
  }

  public static long nanoTime() {
    return System.nanoTime();
  }

  public static long uptimeMillis() {
    return android.os.SystemClock.uptimeMillis();
  }
}