import { Reaction } from "mobx" ; export function createTrackingData ( reaction ) { const trackingData = { reaction , mounted : false , changedBeforeMount : false , cleanAt : Date . now ( ) + CLEANUP_LEAKED_REACTIONS_AFTER_MILLIS } ; return trackingData ; } /**
 * Unified api for timers/Finalization registry cleanups
 * This abstraction make useObserver much simpler
 */ export interface ReactionCleanupTracking { param reaction param objectRetainedByReact addReactionToTrack ( reactionTrackingRef , reaction , objectRetainedByReact ) : IReactionTracking ; recordReactionAsCommitted ( reactionRef ) : void ; forceCleanupTimerToRunNowForTests ( ) : void ; resetCleanupScheduleForTests ( ) : void ; } export interface IReactionTracking { /** The Reaction created during first render, which may be leaked */ reaction : Reaction ; /**
     * The time (in ticks) at which point we should dispose of the reaction
     * if this component hasn't yet been fully mounted.
     */ cleanAt : number ; /**
     * Whether the component has yet completed mounting (for us, whether
     * its useEffect has run)
     */ mounted : boolean ; /**
     * Whether the observables that the component is tracking changed between
     * the first render and the first useEffect.
     */ changedBeforeMount : boolean ; /**
     * In case we are using finalization registry based cleanup,
     * this will hold the cleanup token associated with this reaction
     */ finalizationRegistryCleanupToken ? : number ; } /**
 * The minimum time before we'll clean up a Reaction created in a render
 * for a component that hasn't managed to run its effects. This needs to
 * be big enough to ensure that a component won't turn up and have its
 * effects run without being re-rendered.
 */ export const CLEANUP_LEAKED_REACTIONS_AFTER_MILLIS = 10000 ; /**
 * The frequency with which we'll check for leaked reactions.
 */ export const CLEANUP_TIMER_LOOP_MILLIS = 10000 ;