Annotate implicit instantiations in xplat, defaulting to any

Summary:
Add explicit annotations to underconstrained implicit instantiations as required for Flow's Local Type Inference project. This codemod prepares the codebase to match Flow's new typechecking algorithm. The new algorithm will make Flow more reliable and predictable.

This diff adds `any` or `$FlowFixMe` in cases where more precise types could not be determined.

Details:
- Codemod script: `.facebook/flowd codemod annotate-implicit-instantiations ../../xplat/js --default-any --write`
- Local Type Inference announcement: [post](https://fb.workplace.com/groups/flowlang/posts/788206301785035)
- Support group: [Flow Support](https://fb.workplace.com/groups/flow)

drop-conflicts
bypass-lint

Reviewed By: SamChou19815

Differential Revision: D41226960

fbshipit-source-id: e5e3edbb1aed849f90cc683a4d416a9a2f8f3a19

packages/metro-file-map/src/__tests__/HasteFS-test.js

@@ -13,7 +13,7 @@ import HasteFS from '../HasteFS';
 
 jest.mock('../lib/fast_path', () => ({
   resolve: (a, b) => b,
-  relative: jest.requireActual('path').relative,
+  relative: jest.requireActual<{relative: mixed}>('path').relative,
 }));
 
 describe('matchFilesWithContext', () => {

packages/metro-file-map/src/crawlers/watchman/index.js

@@ -9,6 +9,7 @@
  * @oncall react_native
  */
 
+import type {WatchmanClockSpec} from '../../flow-types';
 import type {
   CrawlerOptions,
   FileData,
@@ -18,10 +19,10 @@ import type {
 } from '../../flow-types';
 import type {WatchmanQueryResponse, WatchmanWatchResponse} from 'fb-watchman';
 
-import {planQuery} from './planQuery';
 import H from '../../constants';
 import * as fastPath from '../../lib/fast_path';
 import normalizePathSep from '../../lib/normalizePathSep';
+import {planQuery} from './planQuery';
 import invariant from 'invariant';
 import * as path from 'path';
 import {performance} from 'perf_hooks';
@@ -60,7 +61,7 @@ module.exports = async function watchmanCrawl({
 }> {
   perfLogger?.point('watchmanCrawl_start');
 
-  const newClocks = new Map();
+  const newClocks = new Map<Path, WatchmanClockSpec>();
 
   const client = new watchman.Client();
   abortSignal?.addEventListener('abort', () => client.end());

packages/metro-transform-worker/src/__tests__/index-test.js

@@ -480,9 +480,9 @@ it('allows replacing the collectDependencies implementation', async () => {
     'metro-transform-worker/__virtual__/collectModifiedDependencies',
     () =>
       jest.fn((ast, opts) => {
-        const metroCoreCollectDependencies = jest.requireActual(
-          'metro/src/ModuleGraph/worker/collectDependencies',
-        );
+        const metroCoreCollectDependencies = jest.requireActual<
+          (empty, empty) => {dependencies: {map: mixed => mixed}},
+        >('metro/src/ModuleGraph/worker/collectDependencies');
         const collectedDeps = metroCoreCollectDependencies(ast, opts);
         return {
           ...collectedDeps,

packages/metro/src/DeltaBundler/__tests__/resolver-test.js

@@ -140,7 +140,10 @@ type MockFSDirContents = $ReadOnly<{
       });
 
       if (osPlatform === 'win32') {
-        jest.mock('path', () => jest.requireActual('path').win32);
+        jest.mock(
+          'path',
+          () => jest.requireActual<{win32: mixed}>('path').win32,
+        );
         jest.mock(
           'fs',
           () => new (require('metro-memory-fs'))({platform: 'win32'}),

packages/metro/src/lib/__tests__/contextModuleTemplates-test.js

@@ -52,7 +52,7 @@ describe('getContextModuleTemplate', () => {
 
   test('creates posix paths on windows for sync template', () => {
     jest.resetModules();
-    jest.mock('path', () => jest.requireActual('path').win32);
+    jest.mock('path', () => jest.requireActual<{win32: mixed}>('path').win32);
     const {
       getContextModuleTemplate: getWindowsTemplate,
     } = require('../contextModuleTemplates');