chore(metro-file-map): exclude problematic types

Author: nickhudkins

packages/metro-config/src/defaults/index.js

@@ -175,6 +175,7 @@ const getDefaultValues = (projectRoot: ?string): ConfigT => ({
 async function getDefaultConfig(rootPath: ?string): Promise<ConfigT> {
   // We can add more logic here to get a sensible default configuration, for
   // now we just return a stub.
+
   return getDefaultValues(rootPath);
 }
 

packages/metro-file-map/src/cache/DiskCacheManager.js

@@ -150,7 +150,7 @@ export class DiskCacheManager implements CacheManager {
     }
   }
 
-  async end() {
+  async end(): Promise<void> {
     // Clear any timers
     if (this.#debounceTimeout) {
       clearTimeout(this.#debounceTimeout);

packages/metro-file-map/src/flow-types.js

@@ -380,7 +380,10 @@ export type HasteMapData = Map<string, HasteMapItem>;
 
 export type HasteMapItem = {
   [platform: string]: HasteMapItemMetadata,
+  // Modeling __proto__: null is not representable by TypeScript type system.
+  /*::
   __proto__: null,
+  */
 };
 export type HasteMapItemMetadata = [/* path */ string, /* type */ number];
 

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

@@ -238,15 +238,19 @@ export default class FileMap extends EventEmitter {
   _buildPromise: ?Promise<BuildResult>;
   _canUseWatchmanPromise: Promise<boolean>;
   _changeID: number;
+  /*::
   _changeInterval: ?IntervalID;
+  */
   _fileProcessor: FileProcessor;
   _console: Console;
   _options: InternalOptions;
   _pathUtils: RootPathUtils;
   _watcher: ?Watcher;
   _cacheManager: CacheManager;
   _crawlerAbortController: AbortController;
+  /*::
   _healthCheckInterval: ?IntervalID;
+  */
   _startupPerfLogger: ?PerfLogger;
 
   #hastePlugin: HastePlugin;

packages/metro-file-map/src/watchers/AbstractWatcher.js

@@ -63,7 +63,7 @@ export class AbstractWatcher implements WatcherBackend {
     // Must be implemented by subclasses
   }
 
-  async stopWatching() {
+  async stopWatching(): Promise<void> {
     this.#emitter.removeAllListeners();
   }
 

packages/metro-file-map/src/watchers/FallbackWatcher.js

@@ -49,7 +49,7 @@ export default class FallbackWatcher extends AbstractWatcher {
   } = Object.create(null);
   +watched: {[key: string]: FSWatcher, __proto__: null} = Object.create(null);
 
-  async startWatching() {
+  async startWatching(): Promise<void> {
     this._watchdir(this.root);
 
     await new Promise(resolve => {

packages/metro-file-map/types/cache/DiskCacheManager.d.ts

@@ -38,5 +38,5 @@ export declare class DiskCacheManager implements CacheManager {
     getSnapshot: () => CacheData,
     $$PARAM_1$$: CacheManagerWriteOptions,
   ): Promise<void>;
-  end(): void;
+  end(): Promise<void>;
 }

packages/metro-file-map/types/crawlers/watchman/index.d.ts

@@ -298,10 +298,7 @@ export interface HasteMap {
   computeConflicts(): Array<HasteConflict>;
 }
 export type HasteMapData = Map<string, HasteMapItem>;
-export type HasteMapItem = {
-  [platform: string]: HasteMapItemMetadata;
-  __proto__: null;
-};
+export type HasteMapItem = {[platform: string]: HasteMapItemMetadata};
 export type HasteMapItemMetadata = [string, number];
 export interface MutableFileSystem extends FileSystem {
   remove(filePath: Path): null | undefined | FileMetadata;