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Add unstable_next() to the React scheduler (#38974)

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* Add unstable_next to the React scheduler

* Apply suggestions from code review

Co-Authored-By: Nathan Bierema <nbierema@gmail.com>

* Update tests with aditional undefined result type

* No undefined because errors aren't caught and bubble up
This commit is contained in:
Maurice de Beijer
2019-10-15 11:40:14 -07:00
committed by Andrew Branch
co-authored by Nathan Bierema
parent a5b172f575
commit b5d9f57930
2 changed files with 9 additions and 3 deletions
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types/scheduler/index.d.ts
Vendored
+3 -2
View File
@@ -19,10 +19,11 @@ export const unstable_UserBlockingPriority = 2;
export const unstable_NormalPriority = 3;
export const unstable_IdlePriority = 5;
export const unstable_LowPriority = 4;
export function unstable_runWithPriority<T>(priorityLevel: number, eventHandler: () => T): T | undefined;
export function unstable_runWithPriority<T>(priorityLevel: number, eventHandler: () => T): T;
export function unstable_scheduleCallback(priorityLevel: number, callback: FrameCallbackType, options?: { delay?: number, timeout?: number}): CallbackNode;
export function unstable_next<T>(eventHandler: () => T): T;
export function unstable_cancelCallback(callbackNode: CallbackNode): void;
export function unstable_wrapCallback(callback: FrameCallbackType): () => FrameCallbackType | undefined;
export function unstable_wrapCallback(callback: FrameCallbackType): () => FrameCallbackType;
export function unstable_getCurrentPriorityLevel(): number;
export function unstable_shouldYield(): boolean;
export function unstable_continueExecution(): void;
types/scheduler/test/scheduler.ts
+6 -1
View File
@@ -1,4 +1,4 @@
import { unstable_scheduleCallback, unstable_cancelCallback, unstable_now, unstable_NormalPriority } from 'scheduler';
import { unstable_scheduleCallback, unstable_cancelCallback, unstable_now, unstable_NormalPriority, unstable_next } from 'scheduler';
// $ExpectType CallbackNode
const callbackNode = unstable_scheduleCallback(unstable_NormalPriority, () => {}, { timeout: 100 });
@@ -7,3 +7,8 @@ unstable_scheduleCallback(unstable_NormalPriority, () => {}, { delay: 100 });
// $ExpectType number
unstable_now();
// $ExpectType number
const nextNumberResult = unstable_next(() => 42);
// $ExpectType string
const nextStringResult = unstable_next(() => 'Hello');