diff --git a/flow-typed/npm/react-dom_v17.x.x.js b/flow-typed/npm/react-dom_v17.x.x.js
index cc2f334626fe..2aa09e1b8871 100644
--- a/flow-typed/npm/react-dom_v17.x.x.js
+++ b/flow-typed/npm/react-dom_v17.x.x.js
@@ -4,44 +4,44 @@ declare module 'react-dom' {
   declare var version: string;
 
   declare function findDOMNode(
-    componentOrElement: Element | ?Component<any, any>
+    componentOrElement: Element | ?Component<any, any>,
   ): null | Element | Text;
 
   declare function render<ElementType: React.ElementType>(
     element: ExactReactElement_DEPRECATED<ElementType>,
     container: Element,
-    callback?: () => void
+    callback?: () => void,
   ): React.ElementRef<ElementType>;
 
   declare function hydrate<ElementType: React.ElementType>(
     element: ExactReactElement_DEPRECATED<ElementType>,
     container: Element,
-    callback?: () => void
+    callback?: () => void,
   ): React.ElementRef<ElementType>;
 
   declare function createPortal(
     node: React.Node,
-    container: Element
+    container: Element,
   ): React.Portal;
 
   declare function unmountComponentAtNode(container: any): boolean;
 
   declare function unstable_batchedUpdates<A, B, C, D, E>(
-    callback: (a: A, b: B, c: C, d: D, e: E) => mixed,
+    callback: (a: A, b: B, c: C, d: D, e: E) => unknown,
     a: A,
     b: B,
     c: C,
     d: D,
-    e: E
+    e: E,
   ): void;
 
   declare function unstable_renderSubtreeIntoContainer<
-    ElementType: React.ElementType
+    ElementType: React.ElementType,
   >(
     parentComponent: Component<any, any>,
     nextElement: ExactReactElement_DEPRECATED<ElementType>,
     container: any,
-    callback?: () => void
+    callback?: () => void,
   ): React.ElementRef<ElementType>;
 }
 
@@ -55,7 +55,7 @@ declare module 'react-dom/server' {
   declare function renderToNodeStream(element: React.Node): stream$Readable;
 
   declare function renderToStaticNodeStream(
-    element: React.Node
+    element: React.Node,
   ): stream$Readable;
 }
 
@@ -63,77 +63,75 @@ declare module 'react-dom/test-utils' {
   import type {Component} from 'react';
 
   declare interface Thenable {
-    then(resolve: () => mixed, reject?: () => mixed): mixed,
+    then(resolve: () => unknown, reject?: () => unknown): unknown;
   }
 
   declare var Simulate: {
     [eventName: string]: (
       element: Element,
-      eventData?: { [key: string]: mixed, ... }
+      eventData?: {[key: string]: unknown, ...},
     ) => void,
     ...
   };
 
   declare function renderIntoDocument(
-    instance: React.MixedElement
+    instance: React.MixedElement,
   ): Component<any, any>;
 
   declare function mockComponent(
     componentClass: React.ElementType,
-    mockTagName?: string
-  ): { [key: string]: mixed, ... };
+    mockTagName?: string,
+  ): {[key: string]: unknown, ...};
 
   declare function isElement(element: React.MixedElement): boolean;
 
   declare function isElementOfType(
     element: React.MixedElement,
-    componentClass: React.ElementType
+    componentClass: React.ElementType,
   ): boolean;
 
   declare function isDOMComponent(instance: any): boolean;
 
-  declare function isCompositeComponent(
-    instance: Component<any, any>
-  ): boolean;
+  declare function isCompositeComponent(instance: Component<any, any>): boolean;
 
   declare function isCompositeComponentWithType(
     instance: Component<any, any>,
-    componentClass: React.ElementType
+    componentClass: React.ElementType,
   ): boolean;
 
   declare function findAllInRenderedTree(
     tree: Component<any, any>,
-    test: (child: Component<any, any>) => boolean
+    test: (child: Component<any, any>) => boolean,
   ): Array<Component<any, any>>;
 
   declare function scryRenderedDOMComponentsWithClass(
     tree: Component<any, any>,
-    className: string
+    className: string,
   ): Array<Element>;
 
   declare function findRenderedDOMComponentWithClass(
     tree: Component<any, any>,
-    className: string
+    className: string,
   ): ?Element;
 
   declare function scryRenderedDOMComponentsWithTag(
     tree: Component<any, any>,
-    tagName: string
+    tagName: string,
   ): Array<Element>;
 
   declare function findRenderedDOMComponentWithTag(
     tree: Component<any, any>,
-    tagName: string
+    tagName: string,
   ): ?Element;
 
   declare function scryRenderedComponentsWithType(
     tree: Component<any, any>,
-    componentClass: React.ElementType
+    componentClass: React.ElementType,
   ): Array<Component<any, any>>;
 
   declare function findRenderedComponentWithType(
     tree: Component<any, any>,
-    componentClass: React.ElementType
+    componentClass: React.ElementType,
   ): ?Component<any, any>;
 
   declare function act(callback: () => void | Thenable): Thenable;
diff --git a/flow-typed/npm/react-test-renderer_v16.x.x.js b/flow-typed/npm/react-test-renderer_v16.x.x.js
index e27d1a6d2114..067a36f54747 100644
--- a/flow-typed/npm/react-test-renderer_v16.x.x.js
+++ b/flow-typed/npm/react-test-renderer_v16.x.x.js
@@ -1,22 +1,25 @@
 // Type definitions for react-test-renderer 16.x.x
 // Ported from: https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/react-test-renderer
 
-type TestRendererOptions = { createNodeMock(element: React.MixedElement): any, ... };
+type TestRendererOptions = {
+  createNodeMock(element: React.MixedElement): any,
+  ...
+};
 
-declare module "react-test-renderer" {
+declare module 'react-test-renderer' {
   import type {Component as ReactComponent} from 'react';
 
   type ReactComponentInstance = ReactComponent<any>;
 
   export type ReactTestRendererJSON = {
     type: string,
-    props: { [propName: string]: any, ... },
+    props: {[propName: string]: any, ...},
     children: null | ReactTestRendererJSON[],
     ...
   };
 
   export type ReactTestRendererTree = ReactTestRendererJSON & {
-    nodeType: "component" | "host",
+    nodeType: 'component' | 'host',
     instance: ?ReactComponentInstance,
     rendered: null | ReactTestRendererTree,
     ...
@@ -25,23 +28,23 @@ declare module "react-test-renderer" {
   export type ReactTestInstance = {
     instance: ?ReactComponentInstance,
     type: string,
-    props: { [propName: string]: any, ... },
+    props: {[propName: string]: any, ...},
     parent: null | ReactTestInstance,
     children: Array<ReactTestInstance | string>,
     find(predicate: (node: ReactTestInstance) => boolean): ReactTestInstance,
     findByType(type: React.ElementType): ReactTestInstance,
-    findByProps(props: { [propName: string]: any, ... }): ReactTestInstance,
+    findByProps(props: {[propName: string]: any, ...}): ReactTestInstance,
     findAll(
       predicate: (node: ReactTestInstance) => boolean,
-      options?: { deep: boolean, ... }
+      options?: {deep: boolean, ...},
     ): ReactTestInstance[],
     findAllByType(
       type: React.ElementType,
-      options?: { deep: boolean, ... }
+      options?: {deep: boolean, ...},
     ): ReactTestInstance[],
     findAllByProps(
-      props: { [propName: string]: any, ... },
-      options?: { deep: boolean, ... }
+      props: {[propName: string]: any, ...},
+      options?: {deep: boolean, ...},
     ): ReactTestInstance[],
     ...
   };
@@ -56,17 +59,20 @@ declare module "react-test-renderer" {
     ...
   };
 
-  declare type Thenable = { then(resolve: () => mixed, reject?: () => mixed): mixed, ... };
+  declare type Thenable = {
+    then(resolve: () => unknown, reject?: () => unknown): unknown,
+    ...
+  };
 
   declare function create(
     nextElement: React.MixedElement,
-    options?: TestRendererOptions
+    options?: TestRendererOptions,
   ): ReactTestRenderer;
 
   declare function act(callback: () => void | Promise<void>): Thenable;
 }
 
-declare module "react-test-renderer/shallow" {
+declare module 'react-test-renderer/shallow' {
   import type {ReactTestInstance} from 'react-test-renderer';
 
   declare export default class ShallowRenderer {
diff --git a/flow-typed/npm/tinyglobby_v0.2.x.js b/flow-typed/npm/tinyglobby_v0.2.x.js
index 6301f4bff5e5..96e77c27eb00 100644
--- a/flow-typed/npm/tinyglobby_v0.2.x.js
+++ b/flow-typed/npm/tinyglobby_v0.2.x.js
@@ -16,18 +16,27 @@ declare module 'tinyglobby' {
     followSymbolicLinks?: boolean,
     fs?: FileSystemAdapter,
     globstar?: boolean,
-    ignore?: string | $ReadOnlyArray<string>,
+    ignore?: string | ReadonlyArray<string>,
     onlyDirectories?: boolean,
     onlyFiles?: boolean,
     signal?: AbortSignal,
   };
 
   declare type GlobModule = {
-    convertPathToPattern(path: string): string;
-    escapePath(path: string): string;
-    isDynamicPattern(pattern: string, options?: { caseSensitiveMatch: boolean }): boolean;
-    glob(patterns: string | $ReadOnlyArray<string>, options?: GlobOptions): Promise<string[]>;
-    globSync(patterns: string | $ReadOnlyArray<string>, options?: GlobOptions): string[];
+    convertPathToPattern(path: string): string,
+    escapePath(path: string): string,
+    isDynamicPattern(
+      pattern: string,
+      options?: {caseSensitiveMatch: boolean},
+    ): boolean,
+    glob(
+      patterns: string | ReadonlyArray<string>,
+      options?: GlobOptions,
+    ): Promise<string[]>,
+    globSync(
+      patterns: string | ReadonlyArray<string>,
+      options?: GlobOptions,
+    ): string[],
   };
 
   declare module.exports: GlobModule;
diff --git a/flow-typed/npm/yargs_v17.x.x.js b/flow-typed/npm/yargs_v17.x.x.js
index 9f614e41f16f..6d0dcf8f6ae4 100644
--- a/flow-typed/npm/yargs_v17.x.x.js
+++ b/flow-typed/npm/yargs_v17.x.x.js
@@ -1,6 +1,6 @@
 // flow-typed version: f7c859e705/yargs_v17.x.x/flow_>=v0.104.x
 
-declare module "yargs" {
+declare module 'yargs' {
   declare type Argv = {
     [key: string]: any,
     _: Array<string>,
@@ -12,13 +12,13 @@ declare module "yargs" {
     alias: string | Array<string>,
     array: boolean,
     boolean: boolean,
-    choices: Array<mixed>,
-    coerce: (arg: {[key: string]: any, ...} | any) => mixed,
+    choices: Array<unknown>,
+    coerce: (arg: {[key: string]: any, ...} | any) => unknown,
     config: boolean,
-    configParser: (configPath: string) => { [key: string]: mixed, ... },
-    conflicts: string | Array<string> | { [key: string]: string, ... },
+    configParser: (configPath: string) => {[key: string]: unknown, ...},
+    conflicts: string | Array<string> | {[key: string]: string, ...},
     count: boolean,
-    default: mixed,
+    default: unknown,
     defaultDescription: string,
     demandOption: boolean | string,
     desc: string,
@@ -27,7 +27,7 @@ declare module "yargs" {
     global: boolean,
     group: string,
     hidden: boolean,
-    implies: string | { [key: string]: string, ... },
+    implies: string | {[key: string]: string, ...},
     nargs: number,
     normalize: boolean,
     number: boolean,
@@ -35,30 +35,32 @@ declare module "yargs" {
     requiresArg: boolean,
     skipValidation: boolean,
     string: boolean,
-    type: "array" | "boolean" | "count" | "number" | "string",
+    type: 'array' | 'boolean' | 'count' | 'number' | 'string',
     ...
   }>;
 
   declare type CommonModuleObject = {|
     command?: string | Array<string>,
     aliases?: Array<string> | string,
-    builder?: { [key: string]: Options, ... } | ((yargsInstance: Yargs) => mixed),
-    handler?: ((argv: Argv) => void) | ((argv: Argv) => Promise<void>)
+    builder?:
+      | {[key: string]: Options, ...}
+      | ((yargsInstance: Yargs) => unknown),
+    handler?: ((argv: Argv) => void) | ((argv: Argv) => Promise<void>),
   |};
 
   declare type ModuleObjectDesc = {|
     ...CommonModuleObject,
-    desc?: string | false
+    desc?: string | false,
   |};
 
   declare type ModuleObjectDescribe = {|
     ...CommonModuleObject,
-    describe?: string | false
+    describe?: string | false,
   |};
 
   declare type ModuleObjectDescription = {|
     ...CommonModuleObject,
-    description?: string | false
+    description?: string | false,
   |};
 
   declare type ModuleObject =
@@ -66,9 +68,10 @@ declare module "yargs" {
     | ModuleObjectDescribe
     | ModuleObjectDescription;
 
-  declare type MiddleWareCallback =
-    | (argv: Argv, yargsInstance?: Yargs) => void
-    | (argv: Argv, yargsInstance?: Yargs) => Promise<void>;
+  declare type MiddleWareCallback = (
+    argv: Argv,
+    yargsInstance?: Yargs,
+  ) => void | ((argv: Argv, yargsInstance?: Yargs) => Promise<void>);
 
   declare type Middleware = MiddleWareCallback | Array<MiddleWareCallback>;
 
@@ -76,29 +79,29 @@ declare module "yargs" {
     (args: Array<string>): Yargs;
 
     alias(key: string, alias: string): this;
-    alias(alias: { [key: string]: string | Array<string>, ... }): this;
+    alias(alias: {[key: string]: string | Array<string>, ...}): this;
     argv: Argv | Promise<Argv>;
     array(key: string | Array<string>): this;
     boolean(parameter: string | Array<string>): this;
-    check(fn: (argv: Argv, options: Array<string>) => mixed): this;
+    check(fn: (argv: Argv, options: Array<string>) => unknown): this;
     choices(key: string, allowed: Array<string>): this;
-    choices(allowed: { [key: string]: Array<string>, ... }): this;
-    coerce(key: string, fn: (value: any) => mixed): this;
-    coerce(object: { [key: string]: (value: any) => mixed, ... }): this;
-    coerce(keys: Array<string>, fn: (value: any) => mixed): this;
+    choices(allowed: {[key: string]: Array<string>, ...}): this;
+    coerce(key: string, fn: (value: any) => unknown): this;
+    coerce(object: {[key: string]: (value: any) => unknown, ...}): this;
+    coerce(keys: Array<string>, fn: (value: any) => unknown): this;
 
     command(
       cmd: string | Array<string>,
       desc: string | false,
       builder?:
-        | { [key: string]: Options, ... }
-        | ((yargsInstance: Yargs) => mixed),
-      handler?: Function
+        | {[key: string]: Options, ...}
+        | ((yargsInstance: Yargs) => unknown),
+      handler?: Function,
     ): this;
     command(
       cmd: string | Array<string>,
       desc: string | false,
-      module: ModuleObject
+      module: ModuleObject,
     ): this;
     command(module: ModuleObject): this;
 
@@ -106,14 +109,14 @@ declare module "yargs" {
       cmd: string | Array<string>,
       desc: string | false,
       builder?:
-        | { [key: string]: Options, ... }
-        | ((yargsInstance: Yargs) => mixed),
-      handler?: Function
+        | {[key: string]: Options, ...}
+        | ((yargsInstance: Yargs) => unknown),
+      handler?: Function,
     ): this;
     commands(
       cmd: string | Array<string>,
       desc: string | false,
-      module: ModuleObject
+      module: ModuleObject,
     ): this;
     commands(module: ModuleObject): this;
 
@@ -131,36 +134,39 @@ declare module "yargs" {
 
     completion(
       cmd?: string,
-      description?: string | false | (
-        current: string,
-        argv: Argv,
-        done: (compeltion: Array<string>) => void
-      ) => ?(Array<string> | Promise<Array<string>>),
+      description?:
+        | string
+        | false
+        | ((
+            current: string,
+            argv: Argv,
+            done: (compeltion: Array<string>) => void,
+          ) => ?(Array<string> | Promise<Array<string>>)),
       fn?: (
         current: string,
         argv: Argv,
-        done: (completion: Array<string>) => void
-      ) => ?(Array<string> | Promise<Array<string>>)
+        done: (completion: Array<string>) => void,
+      ) => ?(Array<string> | Promise<Array<string>>),
     ): this;
 
     config(
       key?: string,
       description?: string,
-      parseFn?: (configPath: string) => { [key: string]: mixed, ... }
+      parseFn?: (configPath: string) => {[key: string]: unknown, ...},
     ): this;
     config(
       key: string,
-      parseFn?: (configPath: string) => { [key: string]: mixed, ... }
+      parseFn?: (configPath: string) => {[key: string]: unknown, ...},
     ): this;
-    config(config: { [key: string]: mixed, ... }): this;
+    config(config: {[key: string]: unknown, ...}): this;
 
     conflicts(key: string, value: string | Array<string>): this;
-    conflicts(keys: { [key: string]: string | Array<string>, ... }): this;
+    conflicts(keys: {[key: string]: string | Array<string>, ...}): this;
 
     count(name: string): this;
 
-    default(key: string, value: mixed, description?: string): this;
-    default(defaults: { [key: string]: mixed, ... }): this;
+    default(key: string, value: unknown, description?: string): this;
+    default(defaults: {[key: string]: unknown, ...}): this;
 
     // Deprecated: use demandOption() and demandCommand() instead.
     demand(key: string, msg?: string | boolean): this;
@@ -174,11 +180,11 @@ declare module "yargs" {
       min: number,
       max: number,
       minMsg?: string,
-      maxMsg?: string
+      maxMsg?: string,
     ): this;
 
     describe(key: string, description: string): this;
-    describe(describeObject: { [key: string]: string, ... }): this;
+    describe(describeObject: {[key: string]: string, ...}): this;
 
     detectLocale(shouldDetect: boolean): this;
 
@@ -191,11 +197,15 @@ declare module "yargs" {
 
     exitProcess(enable: boolean): this;
 
-    fail(fn: false | (failureMessage: string, err: Error, yargs: Yargs) => mixed): this;
+    fail(
+      fn:
+        | false
+        | ((failureMessage: string, err: Error, yargs: Yargs) => unknown),
+    ): this;
 
     getCompletion(
       args: Array<string>,
-      fn: (err: Error | null, completions: Array<string> | void) => void
+      fn: (err: Error | null, completions: Array<string> | void) => void,
     ): Promise<Array<string> | void>;
 
     global(globals: string | Array<string>, isGlobal?: boolean): this;
@@ -209,28 +219,29 @@ declare module "yargs" {
     hide(key: string): this;
 
     implies(key: string, value: string | Array<string>): this;
-    implies(keys: { [key: string]: string | Array<string>, ... }): this;
+    implies(keys: {[key: string]: string | Array<string>, ...}): this;
 
     locale(
-      locale: | "de"
-      | "en"
-      | "es"
-      | "fr"
-      | "hi"
-      | "hu"
-      | "id"
-      | "it"
-      | "ja"
-      | "ko"
-      | "nb"
-      | "pirate"
-      | "pl"
-      | "pt"
-      | "pt_BR"
-      | "ru"
-      | "th"
-      | "tr"
-      | "zh_CN"
+      locale:
+        | 'de'
+        | 'en'
+        | 'es'
+        | 'fr'
+        | 'hi'
+        | 'hu'
+        | 'id'
+        | 'it'
+        | 'ja'
+        | 'ko'
+        | 'nb'
+        | 'pirate'
+        | 'pl'
+        | 'pt'
+        | 'pt_BR'
+        | 'ru'
+        | 'th'
+        | 'tr'
+        | 'zh_CN',
     ): this;
     locale(): string;
 
@@ -246,39 +257,39 @@ declare module "yargs" {
     number(key: string | Array<string>): this;
 
     option(key: string, options?: Options): this;
-    option(optionMap: { [key: string]: Options, ... }): this;
+    option(optionMap: {[key: string]: Options, ...}): this;
 
     options(key: string, options?: Options): this;
-    options(optionMap: { [key: string]: Options, ... }): this;
+    options(optionMap: {[key: string]: Options, ...}): this;
 
     parse(
       args?: string | Array<string>,
-      context?: { [key: string]: any, ... },
-      parseCallback?: (err: Error, argv: Argv, output?: string) => void
+      context?: {[key: string]: any, ...},
+      parseCallback?: (err: Error, argv: Argv, output?: string) => void,
     ): Argv | Promise<Argv>;
     parse(
       args?: string | Array<string>,
-      parseCallback?: (err: Error, argv: Argv, output?: string) => void
+      parseCallback?: (err: Error, argv: Argv, output?: string) => void,
     ): Argv | Promise<Argv>;
 
     parseAsync(
       args?: string | Array<string>,
-      context?: { [key: string]: any, ... },
-      parseCallback?: (err: Error, argv: Argv, output?: string) => void
+      context?: {[key: string]: any, ...},
+      parseCallback?: (err: Error, argv: Argv, output?: string) => void,
     ): Promise<Argv>;
     parseAsync(
       args?: string | Array<string>,
-      parseCallback?: (err: Error, argv: Argv, output?: string) => void
+      parseCallback?: (err: Error, argv: Argv, output?: string) => void,
     ): Promise<Argv>;
 
     parseSync(
       args?: string | Array<string>,
-      context?: { [key: string]: any, ... },
-      parseCallback?: (err: Error, argv: Argv, output?: string) => void
+      context?: {[key: string]: any, ...},
+      parseCallback?: (err: Error, argv: Argv, output?: string) => void,
     ): Argv;
     parseSync(
       args?: string | Array<string>,
-      parseCallback?: (err: Error, argv: Argv, output?: string) => void
+      parseCallback?: (err: Error, argv: Argv, output?: string) => void,
     ): Argv;
 
     parserConfiguration(configuration: {[key: string]: any, ...}): this;
@@ -299,14 +310,14 @@ declare module "yargs" {
 
     showCompletionScript(): this;
 
-    showHelp(consoleLevel?: "error" | "warn" | "log"): this;
+    showHelp(consoleLevel?: 'error' | 'warn' | 'log'): this;
     showHelp(printCallback: (usageData: string) => void): this;
 
     showHelpOnFail(enable: boolean, message?: string): this;
 
     skipValidation(key: string): this;
 
-    showVersion(consoleLevel?: "error" | "warn" | "log"): this;
+    showVersion(consoleLevel?: 'error' | 'warn' | 'log'): this;
     showVersion(printCallback: (usageData: string) => void): this;
 
     strict(enabled?: boolean): this;
@@ -319,11 +330,16 @@ declare module "yargs" {
 
     terminalWidth(): number;
 
-    updateLocale(obj: { [key: string]: string, ... }): this;
-    updateStrings(obj: { [key: string]: string, ... }): this;
+    updateLocale(obj: {[key: string]: string, ...}): this;
+    updateStrings(obj: {[key: string]: string, ...}): this;
 
-    usage(message: string, opts?: { [key: string]: Options, ... }): this;
-    usage(message: string, desc?: string, builder: CommonModuleObject["builder"], handler: CommonModuleObject["handler"]): this;
+    usage(message: string, opts?: {[key: string]: Options, ...}): this;
+    usage(
+      message: string,
+      desc?: string,
+      builder: CommonModuleObject['builder'],
+      handler: CommonModuleObject['handler'],
+    ): this;
 
     version(): this;
     version(version: string | false): this;
@@ -331,7 +347,7 @@ declare module "yargs" {
     version(
       option: string | (() => string),
       description: string | (() => string),
-      version: string
+      version: string,
     ): this;
 
     wrap(columns: number | null): this;
diff --git a/packages/react-native/Libraries/vendor/emitter/EventEmitter.js b/packages/react-native/Libraries/vendor/emitter/EventEmitter.js
index 66bc3b61aa60..08d04a95f2c6 100644
--- a/packages/react-native/Libraries/vendor/emitter/EventEmitter.js
+++ b/packages/react-native/Libraries/vendor/emitter/EventEmitter.js
@@ -18,20 +18,20 @@ export interface EventSubscription {
 export interface IEventEmitter<
   TEventToArgsMap: Readonly<Record<string, ReadonlyArray<UnsafeEventObject>>>,
 > {
-  addListener<TEvent: $Keys<TEventToArgsMap>>(
+  addListener<TEvent: keyof TEventToArgsMap>(
     eventType: TEvent,
     listener: (...args: TEventToArgsMap[TEvent]) => unknown,
     context?: unknown,
   ): EventSubscription;
 
-  emit<TEvent: $Keys<TEventToArgsMap>>(
+  emit<TEvent: keyof TEventToArgsMap>(
     eventType: TEvent,
     ...args: TEventToArgsMap[TEvent]
   ): void;
 
-  removeAllListeners<TEvent: $Keys<TEventToArgsMap>>(eventType?: ?TEvent): void;
+  removeAllListeners<TEvent: keyof TEventToArgsMap>(eventType?: ?TEvent): void;
 
-  listenerCount<TEvent: $Keys<TEventToArgsMap>>(eventType: TEvent): number;
+  listenerCount<TEvent: keyof TEventToArgsMap>(eventType: TEvent): number;
 }
 
 interface Registration<TArgs> {
@@ -83,7 +83,7 @@ export default class EventEmitter<
    * Registers a listener that is called when the supplied event is emitted.
    * Returns a subscription that has a `remove` method to undo registration.
    */
-  addListener<TEvent: $Keys<TEventToArgsMap>>(
+  addListener<TEvent: keyof TEventToArgsMap>(
     eventType: TEvent,
     listener: (...args: TEventToArgsMap[TEvent]) => unknown,
     context: unknown,
@@ -95,7 +95,7 @@ export default class EventEmitter<
     }
     const registrations = allocate<
       TEventToArgsMap,
-      $Keys<TEventToArgsMap>,
+      keyof TEventToArgsMap,
       TEventToArgsMap[TEvent],
     >(this.#registry, eventType);
     const registration: Registration<TEventToArgsMap[TEvent]> = {
@@ -116,7 +116,7 @@ export default class EventEmitter<
    * If a listener modifies the listeners registered for the same event, those
    * changes will not be reflected in the current invocation of `emit`.
    */
-  emit<TEvent: $Keys<TEventToArgsMap>>(
+  emit<TEvent: keyof TEventToArgsMap>(
     eventType: TEvent,
     ...args: TEventToArgsMap[TEvent]
   ): void {
@@ -134,9 +134,7 @@ export default class EventEmitter<
   /**
    * Removes all registered listeners.
    */
-  removeAllListeners<TEvent: $Keys<TEventToArgsMap>>(
-    eventType?: ?TEvent,
-  ): void {
+  removeAllListeners<TEvent: keyof TEventToArgsMap>(eventType?: ?TEvent): void {
     if (eventType == null) {
       // $FlowFixMe[incompatible-type]
       this.#registry = {};
@@ -148,7 +146,7 @@ export default class EventEmitter<
   /**
    * Returns the number of registered listeners for the supplied event.
    */
-  listenerCount<TEvent: $Keys<TEventToArgsMap>>(eventType: TEvent): number {
+  listenerCount<TEvent: keyof TEventToArgsMap>(eventType: TEvent): number {
     const registrations: ?Set<Registration<TEventToArgsMap[TEvent]>> =
       this.#registry[eventType];
     return registrations == null ? 0 : registrations.size;
@@ -157,7 +155,7 @@ export default class EventEmitter<
 
 function allocate<
   TEventToArgsMap: Readonly<Record<string, ReadonlyArray<UnsafeEventObject>>>,
-  TEvent: $Keys<TEventToArgsMap>,
+  TEvent: keyof TEventToArgsMap,
 >(
   registry: Registry<TEventToArgsMap>,
   eventType: TEvent,