Merge pull request #29008 from Methuselah96/schedule

[schedule] Add types

types/schedule/index.d.ts

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+// Type definitions for schedule 0.5
+// Project: https://reactjs.org/
+// Definitions by: Nathan Bierema <https://github.com/Methuselah96>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export interface Deadline {
+  timeRemaining(): number;
+  didTimeout: boolean;
+}
+export type FrameCallbackType = (deadline: Deadline) => void;
+export interface CallbackNode {
+  callback: FrameCallbackType;
+  timesOutAt: number;
+  next: CallbackNode | null;
+  prev: CallbackNode | null;
+}
+
+export function unstable_scheduleWork(callback: FrameCallbackType, options?: { timeout: number }): CallbackNode;
+export function unstable_cancelScheduledWork(callbackNode: CallbackNode): void;
+export function unstable_now(): number;

types/schedule/schedule-tests.ts

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+import { unstable_scheduleWork, unstable_cancelScheduledWork, unstable_now } from 'schedule';
+
+// $ExpectType CallbackNode
+const callbackNode = unstable_scheduleWork(() => 0, { timeout: 100 });
+unstable_cancelScheduledWork(callbackNode);
+
+// $ExpectType number
+unstable_now();

types/schedule/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "schedule-tests.ts"
+    ]
+}

types/schedule/tslint.json

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+{ "extends": "dtslint/dt.json" }