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59 lines
2.4 KiB
59 lines
2.4 KiB
import { Action } from './scheduler/Action';
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import { Subscription } from './Subscription';
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import { SchedulerLike, SchedulerAction } from './types';
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/**
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* An execution context and a data structure to order tasks and schedule their
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* execution. Provides a notion of (potentially virtual) time, through the
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* `now()` getter method.
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*
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* Each unit of work in a Scheduler is called an `Action`.
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*
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* ```ts
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* class Scheduler {
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* now(): number;
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* schedule(work, delay?, state?): Subscription;
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* }
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* ```
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*
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* @class Scheduler
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* @deprecated Scheduler is an internal implementation detail of RxJS, and
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* should not be used directly. Rather, create your own class and implement
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* {@link SchedulerLike}
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*/
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export declare class Scheduler implements SchedulerLike {
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private SchedulerAction;
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/**
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* Note: the extra arrow function wrapper is to make testing by overriding
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* Date.now easier.
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* @nocollapse
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*/
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static now: () => number;
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constructor(SchedulerAction: typeof Action, now?: () => number);
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/**
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* A getter method that returns a number representing the current time
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* (at the time this function was called) according to the scheduler's own
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* internal clock.
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* @return {number} A number that represents the current time. May or may not
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* have a relation to wall-clock time. May or may not refer to a time unit
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* (e.g. milliseconds).
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*/
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now: () => number;
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/**
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* Schedules a function, `work`, for execution. May happen at some point in
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* the future, according to the `delay` parameter, if specified. May be passed
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* some context object, `state`, which will be passed to the `work` function.
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*
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* The given arguments will be processed an stored as an Action object in a
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* queue of actions.
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*
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* @param {function(state: ?T): ?Subscription} work A function representing a
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* task, or some unit of work to be executed by the Scheduler.
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* @param {number} [delay] Time to wait before executing the work, where the
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* time unit is implicit and defined by the Scheduler itself.
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* @param {T} [state] Some contextual data that the `work` function uses when
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* called by the Scheduler.
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* @return {Subscription} A subscription in order to be able to unsubscribe
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* the scheduled work.
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*/
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schedule<T>(work: (this: SchedulerAction<T>, state?: T) => void, delay?: number, state?: T): Subscription;
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}
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