Expect.kt

/*
 * Copyright 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package androidx.compose.runtime.dispatch

/**
 * The [MonotonicFrameClock] used by [withFrameNanos] and [withFrameMillis] if one is not present
 * in the calling [kotlin.coroutines.CoroutineContext].
 */
// Implementor's note:
// This frame clock implementation should try to synchronize with the vsync rate of the device's
// default display. Without this synchronization, any usage of this default clock will result
// in inconsistent animation frame timing and associated visual artifacts.
expect val DefaultMonotonicFrameClock: MonotonicFrameClock