diff --git a/lib/components/chat-mention-provider.react.js b/lib/components/chat-mention-provider.react.js
index 301c8c987..2daededbd 100644
--- a/lib/components/chat-mention-provider.react.js
+++ b/lib/components/chat-mention-provider.react.js
@@ -1,227 +1,236 @@
 // @flow
 
 import * as React from 'react';
 
 import genesis from '../facts/genesis.js';
 import { threadInfoSelector } from '../selectors/thread-selectors.js';
 import SentencePrefixSearchIndex from '../shared/sentence-prefix-search-index.js';
 import { threadTypes } from '../types/thread-types-enum.js';
 import type {
   ChatMentionCandidates,
   ChatMentionCandidatesObj,
   ResolvedThreadInfo,
   ThreadInfo,
 } from '../types/thread-types.js';
 import { useResolvedThreadInfosObj } from '../utils/entity-helpers.js';
 import { useSelector } from '../utils/redux-utils.js';
 
 type Props = {
   +children: React.Node,
 };
 export type ChatMentionContextType = {
   +getChatMentionSearchIndex: (
     threadInfo: ThreadInfo,
   ) => SentencePrefixSearchIndex,
   +communityThreadIDForGenesisThreads: { +[id: string]: string },
   +chatMentionCandidatesObj: ChatMentionCandidatesObj,
 };
 
 const emptySearchIndex = new SentencePrefixSearchIndex();
 const ChatMentionContext: React.Context<?ChatMentionContextType> =
   React.createContext<?ChatMentionContextType>({
     getChatMentionSearchIndex: () => emptySearchIndex,
     communityThreadIDForGenesisThreads: {},
     chatMentionCandidatesObj: {},
   });
 
 function ChatMentionContextProvider(props: Props): React.Node {
   const { children } = props;
 
   const { communityThreadIDForGenesisThreads, chatMentionCandidatesObj } =
     useChatMentionCandidatesObjAndUtils();
   const searchIndices = useChatMentionSearchIndex(chatMentionCandidatesObj);
 
   const getChatMentionSearchIndex = React.useCallback(
     (threadInfo: ThreadInfo) => {
       if (threadInfo.community === genesis.id) {
         return searchIndices[communityThreadIDForGenesisThreads[threadInfo.id]];
       }
       return searchIndices[threadInfo.community ?? threadInfo.id];
     },
     [communityThreadIDForGenesisThreads, searchIndices],
   );
 
   const value = React.useMemo(
     () => ({
       getChatMentionSearchIndex,
       communityThreadIDForGenesisThreads,
       chatMentionCandidatesObj,
     }),
     [
       getChatMentionSearchIndex,
       communityThreadIDForGenesisThreads,
       chatMentionCandidatesObj,
     ],
   );
 
   return (
     <ChatMentionContext.Provider value={value}>
       {children}
     </ChatMentionContext.Provider>
   );
 }
 
 function getChatMentionCandidates(threadInfos: {
   +[id: string]: ResolvedThreadInfo,
 }): {
   chatMentionCandidatesObj: ChatMentionCandidatesObj,
   communityThreadIDForGenesisThreads: { +[id: string]: string },
 } {
   const result = {};
   const visitedGenesisThreads = new Set();
   const communityThreadIDForGenesisThreads = {};
   for (const currentThreadID in threadInfos) {
     const currentThreadInfo = threadInfos[currentThreadID];
     const { community: currentThreadCommunity } = currentThreadInfo;
     if (!currentThreadCommunity) {
       if (!result[currentThreadID]) {
         result[currentThreadID] = { [currentThreadID]: currentThreadInfo };
       }
       continue;
     }
     if (!result[currentThreadCommunity]) {
       result[currentThreadCommunity] = {
         [currentThreadCommunity]: threadInfos[currentThreadCommunity],
       };
     }
     // Handle GENESIS community case: mentioning inside GENESIS should only
     // show chats and threads inside the top level that is below GENESIS.
     if (threadInfos[currentThreadCommunity].type === threadTypes.GENESIS) {
       if (visitedGenesisThreads.has(currentThreadID)) {
         continue;
       }
       const threadTraversePath = [currentThreadInfo];
       visitedGenesisThreads.add(currentThreadID);
       let currentlySelectedThreadID = currentThreadInfo.parentThreadID;
       while (currentlySelectedThreadID) {
         const currentlySelectedThreadInfo =
           threadInfos[currentlySelectedThreadID];
         if (
           visitedGenesisThreads.has(currentlySelectedThreadID) ||
           !currentlySelectedThreadInfo ||
           currentlySelectedThreadInfo.type === threadTypes.GENESIS
         ) {
           break;
         }
         threadTraversePath.push(currentlySelectedThreadInfo);
         visitedGenesisThreads.add(currentlySelectedThreadID);
         currentlySelectedThreadID = currentlySelectedThreadInfo.parentThreadID;
       }
       const lastThreadInTraversePath =
         threadTraversePath[threadTraversePath.length - 1];
       let lastThreadInTraversePathParentID;
       if (lastThreadInTraversePath.parentThreadID) {
         lastThreadInTraversePathParentID = threadInfos[
           lastThreadInTraversePath.parentThreadID
         ]
           ? lastThreadInTraversePath.parentThreadID
           : lastThreadInTraversePath.id;
       } else {
         lastThreadInTraversePathParentID = lastThreadInTraversePath.id;
       }
       if (
         threadInfos[lastThreadInTraversePathParentID].type ===
         threadTypes.GENESIS
       ) {
         if (!result[lastThreadInTraversePath.id]) {
           result[lastThreadInTraversePath.id] = {};
         }
         for (const threadInfo of threadTraversePath) {
           result[lastThreadInTraversePath.id][threadInfo.id] = threadInfo;
           communityThreadIDForGenesisThreads[threadInfo.id] =
             lastThreadInTraversePath.id;
         }
         if (
           lastThreadInTraversePath.type !== threadTypes.PERSONAL &&
           lastThreadInTraversePath.type !== threadTypes.PRIVATE
         ) {
           result[genesis.id][lastThreadInTraversePath.id] =
             lastThreadInTraversePath;
         }
       } else {
         if (
           !communityThreadIDForGenesisThreads[lastThreadInTraversePathParentID]
         ) {
           result[lastThreadInTraversePathParentID] = {};
           communityThreadIDForGenesisThreads[lastThreadInTraversePathParentID] =
             lastThreadInTraversePathParentID;
         }
         const lastThreadInTraversePathParentCommunityThreadID =
           communityThreadIDForGenesisThreads[lastThreadInTraversePathParentID];
         for (const threadInfo of threadTraversePath) {
           result[lastThreadInTraversePathParentCommunityThreadID][
             threadInfo.id
           ] = threadInfo;
           communityThreadIDForGenesisThreads[threadInfo.id] =
             lastThreadInTraversePathParentCommunityThreadID;
         }
       }
       continue;
     }
     result[currentThreadCommunity][currentThreadID] = currentThreadInfo;
   }
   return {
     chatMentionCandidatesObj: result,
     communityThreadIDForGenesisThreads,
   };
 }
 
+// Without allAtOnce, useChatMentionCandidatesObjAndUtils is very expensive.
+// useResolvedThreadInfosObj would trigger its recalculation for each ENS name
+// as it streams in, but we would prefer to trigger its recaculation just once
+// for every update of the underlying Redux data.
+const useResolvedThreadInfosObjOptions = { allAtOnce: true };
+
 function useChatMentionCandidatesObjAndUtils(): {
   chatMentionCandidatesObj: ChatMentionCandidatesObj,
   resolvedThreadInfos: ChatMentionCandidates,
   communityThreadIDForGenesisThreads: { +[id: string]: string },
 } {
   const threadInfos = useSelector(threadInfoSelector);
-  const resolvedThreadInfos = useResolvedThreadInfosObj(threadInfos);
+  const resolvedThreadInfos = useResolvedThreadInfosObj(
+    threadInfos,
+    useResolvedThreadInfosObjOptions,
+  );
   const { chatMentionCandidatesObj, communityThreadIDForGenesisThreads } =
     React.useMemo(
       () => getChatMentionCandidates(resolvedThreadInfos),
       [resolvedThreadInfos],
     );
   return {
     chatMentionCandidatesObj,
     resolvedThreadInfos,
     communityThreadIDForGenesisThreads,
   };
 }
 
 function useChatMentionSearchIndex(
   chatMentionCandidatesObj: ChatMentionCandidatesObj,
 ): {
   +[id: string]: SentencePrefixSearchIndex,
 } {
   return React.useMemo(() => {
     const result = {};
     for (const communityThreadID in chatMentionCandidatesObj) {
       const searchIndex = new SentencePrefixSearchIndex();
       const searchIndexEntries = [];
       for (const threadID in chatMentionCandidatesObj[communityThreadID]) {
         searchIndexEntries.push({
           id: threadID,
           uiName: chatMentionCandidatesObj[communityThreadID][threadID].uiName,
         });
       }
       // Sort the keys so that the order of the search result is consistent
       searchIndexEntries.sort(({ uiName: uiNameA }, { uiName: uiNameB }) =>
         uiNameA.localeCompare(uiNameB),
       );
       for (const { id, uiName } of searchIndexEntries) {
         searchIndex.addEntry(id, uiName);
       }
       result[communityThreadID] = searchIndex;
     }
     return result;
   }, [chatMentionCandidatesObj]);
 }
 
 export { ChatMentionContextProvider, ChatMentionContext };
diff --git a/lib/utils/entity-helpers.js b/lib/utils/entity-helpers.js
index c578da5cf..4fa733ced 100644
--- a/lib/utils/entity-helpers.js
+++ b/lib/utils/entity-helpers.js
@@ -1,122 +1,128 @@
 // @flow
 
 import invariant from 'invariant';
 import * as React from 'react';
 
 import {
   ET,
   useENSNamesForEntityText,
   entityTextToRawString,
 } from './entity-text.js';
+import type { UseENSNamesOptions } from '../hooks/ens-cache.js';
 import type { ThreadInfo, ResolvedThreadInfo } from '../types/thread-types.js';
 import { values } from '../utils/objects.js';
 
 function useResolvedThreadInfos(
   threadInfos: $ReadOnlyArray<ThreadInfo>,
+  options?: ?UseENSNamesOptions,
 ): $ReadOnlyArray<ResolvedThreadInfo> {
   const entityText = React.useMemo(
     () => threadInfos.map(threadInfo => threadInfo.uiName),
     [threadInfos],
   );
-  const withENSNames = useENSNamesForEntityText(entityText);
+  const withENSNames = useENSNamesForEntityText(entityText, options);
   invariant(
     withENSNames,
     'useENSNamesForEntityText only returns falsey when passed falsey',
   );
   return React.useMemo(
     () =>
       threadInfos.map((threadInfo, i) => {
         if (typeof threadInfo.uiName === 'string') {
           // Flow wants return { ...threadInfo, uiName: threadInfo.uiName }
           // but that's wasteful and unneeded, so we any-cast here
           return (threadInfo: any);
         }
         const resolvedThreadEntity = withENSNames[i];
         return {
           ...threadInfo,
           uiName: entityTextToRawString([resolvedThreadEntity]),
         };
       }),
     [threadInfos, withENSNames],
   );
 }
 
 function useResolvedOptionalThreadInfos(
   threadInfos: ?$ReadOnlyArray<ThreadInfo>,
 ): ?$ReadOnlyArray<ResolvedThreadInfo> {
   const entityText = React.useMemo(() => {
     if (!threadInfos) {
       return null;
     }
     return threadInfos.map(threadInfo =>
       ET.thread({ display: 'uiName', threadInfo }),
     );
   }, [threadInfos]);
   const withENSNames = useENSNamesForEntityText(entityText);
   return React.useMemo(() => {
     if (!threadInfos) {
       return threadInfos;
     }
     invariant(
       withENSNames,
       'useENSNamesForEntityText only returns falsey when passed falsey',
     );
     return threadInfos.map((threadInfo, i) => {
       if (typeof threadInfo.uiName === 'string') {
         // Flow wants return { ...threadInfo, uiName: threadInfo.uiName }
         // but that's wasteful and unneeded, so we any-cast here
         return (threadInfo: any);
       }
       const resolvedThreadEntity = withENSNames[i];
       return {
         ...threadInfo,
         uiName: entityTextToRawString([resolvedThreadEntity]),
       };
     });
   }, [threadInfos, withENSNames]);
 }
 
-function useResolvedThreadInfosObj(threadInfosObj: {
-  +[id: string]: ThreadInfo,
-}): { +[id: string]: ResolvedThreadInfo } {
+function useResolvedThreadInfosObj(
+  threadInfosObj: { +[id: string]: ThreadInfo },
+  options?: ?UseENSNamesOptions,
+): { +[id: string]: ResolvedThreadInfo } {
   const threadInfosArray = React.useMemo(
     () => values(threadInfosObj),
     [threadInfosObj],
   );
-  const resolvedThreadInfosArray = useResolvedThreadInfos(threadInfosArray);
+  const resolvedThreadInfosArray = useResolvedThreadInfos(
+    threadInfosArray,
+    options,
+  );
   return React.useMemo(() => {
     const obj = {};
     for (const resolvedThreadInfo of resolvedThreadInfosArray) {
       obj[resolvedThreadInfo.id] = resolvedThreadInfo;
     }
     return obj;
   }, [resolvedThreadInfosArray]);
 }
 
 function useResolvedThreadInfo(threadInfo: ThreadInfo): ResolvedThreadInfo {
   const resolutionInput = React.useMemo(() => [threadInfo], [threadInfo]);
   const [resolvedThreadInfo] = useResolvedThreadInfos(resolutionInput);
   return resolvedThreadInfo;
 }
 
 function useResolvedOptionalThreadInfo(
   threadInfo: ?ThreadInfo,
 ): ?ResolvedThreadInfo {
   const resolutionInput = React.useMemo(
     () => (threadInfo ? [threadInfo] : []),
     [threadInfo],
   );
   const [resolvedThreadInfo] = useResolvedThreadInfos(resolutionInput);
   if (!threadInfo) {
     return threadInfo;
   }
   return resolvedThreadInfo;
 }
 
 export {
   useResolvedThreadInfos,
   useResolvedOptionalThreadInfos,
   useResolvedThreadInfosObj,
   useResolvedThreadInfo,
   useResolvedOptionalThreadInfo,
 };
diff --git a/lib/utils/entity-text.js b/lib/utils/entity-text.js
index d56a0d1f0..e2f6d58da 100644
--- a/lib/utils/entity-text.js
+++ b/lib/utils/entity-text.js
@@ -1,589 +1,592 @@
 // @flow
 
 import invariant from 'invariant';
 import * as React from 'react';
 import t, { type TInterface, type TUnion } from 'tcomb';
 
 import type { GetENSNames } from './ens-helpers.js';
 import { tID, tShape, tString } from './validation-utils.js';
-import { useENSNames } from '../hooks/ens-cache.js';
+import { useENSNames, type UseENSNamesOptions } from '../hooks/ens-cache.js';
 import { threadNoun } from '../shared/thread-utils.js';
 import { stringForUser } from '../shared/user-utils.js';
 import {
   type ThreadType,
   threadTypes,
   threadTypeValidator,
 } from '../types/thread-types-enum.js';
 import { type RawThreadInfo, type ThreadInfo } from '../types/thread-types.js';
 import { basePluralize } from '../utils/text-utils.js';
 
 type UserEntity = {
   +type: 'user',
   +id: string,
   +username?: ?string,
   +isViewer?: ?boolean,
   +possessive?: ?boolean, // eg. `user's` instead of `user`
 };
 export const userEntityValidator: TInterface<UserEntity> = tShape<UserEntity>({
   type: tString('user'),
   id: t.String,
   username: t.maybe(t.String),
   isViewer: t.maybe(t.Boolean),
   possessive: t.maybe(t.Boolean),
 });
 
 // Comments explain how thread name will appear from user4's perspective
 export type ThreadEntity =
   | {
       +type: 'thread',
       +id: string,
       +name?: ?string,
       // displays threadInfo.name if set, or 'user1, user2, and user3'
       +display: 'uiName',
       // If uiName is EntityText, then at render time ThreadEntity will be
       // replaced with a pluralized list of uiName's UserEntities
       +uiName: $ReadOnlyArray<UserEntity> | string,
       // If name isn't set and uiName is an array with only the viewer, then
       // just_you_string displays "just you" but viewer_username displays the
       // viewer's ENS-resolved username. Defaults to just_you_string
       +ifJustViewer?: 'just_you_string' | 'viewer_username',
     }
   | {
       +type: 'thread',
       +id: string,
       +name?: ?string,
       // displays threadInfo.name if set, or eg. 'this thread' or 'this chat'
       +display: 'shortName',
       +threadType?: ?ThreadType,
       +parentThreadID?: ?string,
       +alwaysDisplayShortName?: ?boolean, // don't default to name
       +subchannel?: ?boolean, // short name should be "subchannel"
       +possessive?: ?boolean, // eg. `this thread's` instead of `this thread`
     };
 
 export const threadEntityValidator: TUnion<ThreadEntity> = t.union([
   tShape({
     type: tString('thread'),
     id: tID,
     name: t.maybe(t.String),
     display: tString('uiName'),
     uiName: t.union([t.list(userEntityValidator), t.String]),
     ifJustViewer: t.maybe(t.enums.of(['just_you_string', 'viewer_username'])),
   }),
   tShape({
     type: tString('thread'),
     id: tID,
     name: t.maybe(t.String),
     display: tString('shortName'),
     threadType: t.maybe(threadTypeValidator),
     parentThreadID: t.maybe(tID),
     alwaysDisplayShortName: t.maybe(t.Boolean),
     subchannel: t.maybe(t.Boolean),
     possessive: t.maybe(t.Boolean),
   }),
 ]);
 
 type ColorEntity = {
   +type: 'color',
   +hex: string,
 };
 
 type EntityTextComponent = UserEntity | ThreadEntity | ColorEntity | string;
 
 export type EntityText = $ReadOnlyArray<EntityTextComponent>;
 
 const entityTextFunction = (
   strings: $ReadOnlyArray<string>,
   ...entities: $ReadOnlyArray<EntityTextComponent | EntityText>
 ) => {
   const result = [];
   for (let i = 0; i < strings.length; i++) {
     const str = strings[i];
     if (str) {
       result.push(str);
     }
     const entity = entities[i];
     if (!entity) {
       continue;
     }
 
     if (typeof entity === 'string') {
       const lastResult = result.length > 0 && result[result.length - 1];
       if (typeof lastResult === 'string') {
         result[result.length - 1] = lastResult + entity;
       } else {
         result.push(entity);
       }
     } else if (Array.isArray(entity)) {
       const [firstEntity, ...restOfEntity] = entity;
       const lastResult = result.length > 0 && result[result.length - 1];
       if (typeof lastResult === 'string' && typeof firstEntity === 'string') {
         result[result.length - 1] = lastResult + firstEntity;
       } else if (firstEntity) {
         result.push(firstEntity);
       }
       result.push(...restOfEntity);
     } else {
       result.push(entity);
     }
   }
   return result;
 };
 
 // defaults to shortName
 type EntityTextThreadInput =
   | {
       +display: 'uiName',
       +threadInfo: ThreadInfo,
     }
   | {
       +display?: 'shortName',
       +threadInfo: ThreadInfo | RawThreadInfo,
       +subchannel?: ?boolean,
       +possessive?: ?boolean,
     }
   | {
       +display: 'alwaysDisplayShortName',
       +threadInfo: ThreadInfo | RawThreadInfo,
       +possessive?: ?boolean,
     }
   | {
       +display: 'alwaysDisplayShortName',
       +threadID: string,
       +parentThreadID?: ?string,
       +threadType?: ?ThreadType,
       +possessive?: ?boolean,
     };
 // ESLint doesn't recognize that invariant always throws
 // eslint-disable-next-line consistent-return
 entityTextFunction.thread = (input: EntityTextThreadInput) => {
   if (input.display === 'uiName') {
     const { threadInfo } = input;
     if (typeof threadInfo.uiName !== 'string') {
       return threadInfo.uiName;
     }
     return {
       type: 'thread',
       id: threadInfo.id,
       name: threadInfo.name,
       display: 'uiName',
       uiName: threadInfo.uiName,
     };
   }
   if (input.display === 'alwaysDisplayShortName' && input.threadID) {
     const { threadID, threadType, parentThreadID, possessive } = input;
     return {
       type: 'thread',
       id: threadID,
       name: undefined,
       display: 'shortName',
       threadType,
       parentThreadID,
       alwaysDisplayShortName: true,
       possessive,
     };
   } else if (input.display === 'alwaysDisplayShortName' && input.threadInfo) {
     const { threadInfo, possessive } = input;
     return {
       type: 'thread',
       id: threadInfo.id,
       name: threadInfo.name,
       display: 'shortName',
       threadType: threadInfo.type,
       parentThreadID: threadInfo.parentThreadID,
       alwaysDisplayShortName: true,
       possessive,
     };
   } else if (input.display === 'shortName' || !input.display) {
     const { threadInfo, subchannel, possessive } = input;
     return {
       type: 'thread',
       id: threadInfo.id,
       name: threadInfo.name,
       display: 'shortName',
       threadType: threadInfo.type,
       parentThreadID: threadInfo.parentThreadID,
       subchannel,
       possessive,
     };
   }
   invariant(
     false,
     `ET.thread passed unexpected display type: ${input.display}`,
   );
 };
 
 type EntityTextUserInput = {
   +userInfo: {
     +id: string,
     +username?: ?string,
     +isViewer?: ?boolean,
     ...
   },
   +possessive?: ?boolean,
 };
 entityTextFunction.user = (input: EntityTextUserInput) => ({
   type: 'user',
   id: input.userInfo.id,
   username: input.userInfo.username,
   isViewer: input.userInfo.isViewer,
   possessive: input.possessive,
 });
 
 type EntityTextColorInput = { +hex: string };
 entityTextFunction.color = (input: EntityTextColorInput) => ({
   type: 'color',
   hex: input.hex,
 });
 
 // ET is a JS tag function used in template literals, eg. ET`something`
 // It allows you to compose raw text and "entities" together
 type EntityTextFunction = ((
   strings: $ReadOnlyArray<string>,
   ...entities: $ReadOnlyArray<EntityTextComponent | EntityText>
 ) => EntityText) & {
   +thread: EntityTextThreadInput => ThreadEntity,
   +user: EntityTextUserInput => UserEntity,
   +color: EntityTextColorInput => ColorEntity,
   ...
 };
 const ET: EntityTextFunction = entityTextFunction;
 
 type MakePossessiveInput = { +str: string, +isViewer?: ?boolean };
 function makePossessive(input: MakePossessiveInput) {
   if (input.isViewer) {
     return 'your';
   }
   return `${input.str}’s`;
 }
 
 function getNameForThreadEntity(
   entity: ThreadEntity,
   params?: ?EntityTextToRawStringParams,
 ): string {
   const { name: userGeneratedName, display } = entity;
   if (entity.display === 'uiName') {
     if (userGeneratedName) {
       return userGeneratedName;
     }
     const { uiName } = entity;
     if (typeof uiName === 'string') {
       return uiName;
     }
 
     let userEntities = uiName;
     if (!params?.ignoreViewer) {
       const viewerFilteredUserEntities = userEntities.filter(
         innerEntity => !innerEntity.isViewer,
       );
       if (viewerFilteredUserEntities.length > 0) {
         userEntities = viewerFilteredUserEntities;
       } else if (entity.ifJustViewer === 'viewer_username') {
         // We pass ignoreViewer to entityTextToRawString in order
         // to prevent it from rendering the viewer as "you"
         params = { ...params, ignoreViewer: true };
       } else {
         return 'just you';
       }
     }
 
     const pluralized = pluralizeEntityText(
       userEntities.map(innerEntity => [innerEntity]),
     );
     return entityTextToRawString(pluralized, params);
   }
 
   invariant(
     entity.display === 'shortName',
     `getNameForThreadEntity can't handle thread entity display ${display}`,
   );
 
   let { name } = entity;
   if (!name || entity.alwaysDisplayShortName) {
     const threadType = entity.threadType ?? threadTypes.PERSONAL;
     const { parentThreadID } = entity;
     const noun = entity.subchannel
       ? 'subchannel'
       : threadNoun(threadType, parentThreadID);
     if (entity.id === params?.threadID) {
       const prefixThisThreadNounWith =
         params?.prefixThisThreadNounWith === 'your' ? 'your' : 'this';
       name = `${prefixThisThreadNounWith} ${noun}`;
     } else {
       name = `a ${noun}`;
     }
   }
   if (entity.possessive) {
     name = makePossessive({ str: name });
   }
   return name;
 }
 
 function getNameForUserEntity(
   entity: UserEntity,
   ignoreViewer: ?boolean,
 ): string {
   const isViewer = entity.isViewer && !ignoreViewer;
   const entityWithIsViewerIgnored = { ...entity, isViewer };
   const str = stringForUser(entityWithIsViewerIgnored);
   if (!entityWithIsViewerIgnored.possessive) {
     return str;
   }
   return makePossessive({ str, isViewer });
 }
 
 type EntityTextToRawStringParams = {
   +threadID?: ?string,
   +ignoreViewer?: ?boolean,
   +prefixThisThreadNounWith?: ?('this' | 'your'),
 };
 function entityTextToRawString(
   entityText: EntityText,
   params?: ?EntityTextToRawStringParams,
 ): string {
   // ESLint doesn't recognize that invariant always throws
   // eslint-disable-next-line consistent-return
   const textParts = entityText.map(entity => {
     if (typeof entity === 'string') {
       return entity;
     } else if (entity.type === 'thread') {
       return getNameForThreadEntity(entity, params);
     } else if (entity.type === 'color') {
       return entity.hex;
     } else if (entity.type === 'user') {
       return getNameForUserEntity(entity, params?.ignoreViewer);
     } else {
       invariant(
         false,
         `entityTextToRawString can't handle entity type ${entity.type}`,
       );
     }
   });
   return textParts.join('');
 }
 
 type RenderFunctions = {
   +renderText: ({ +text: string }) => React.Node,
   +renderThread: ({ +id: string, +name: string }) => React.Node,
   +renderUser: ({ +userID: string, +usernameText: string }) => React.Node,
   +renderColor: ({ +hex: string }) => React.Node,
 };
 function entityTextToReact(
   entityText: EntityText,
   threadID: string,
   renderFuncs: RenderFunctions,
 ): React.Node {
   const { renderText, renderThread, renderUser, renderColor } = renderFuncs;
   // ESLint doesn't recognize that invariant always throws
   // eslint-disable-next-line consistent-return
   return entityText.map((entity, i) => {
     const key = `text${i}`;
     if (typeof entity === 'string') {
       return (
         <React.Fragment key={key}>
           {renderText({ text: entity })}
         </React.Fragment>
       );
     } else if (entity.type === 'thread') {
       const { id } = entity;
       const name = getNameForThreadEntity(entity, { threadID });
       if (id === threadID) {
         return name;
       } else {
         return (
           <React.Fragment key={key}>
             {renderThread({ id, name })}
           </React.Fragment>
         );
       }
     } else if (entity.type === 'color') {
       return (
         <React.Fragment key={key}>
           {renderColor({ hex: entity.hex })}
         </React.Fragment>
       );
     } else if (entity.type === 'user') {
       const userID = entity.id;
       const usernameText = getNameForUserEntity(entity);
 
       return (
         <React.Fragment key={key}>
           {renderUser({ userID, usernameText })}
         </React.Fragment>
       );
     } else {
       invariant(
         false,
         `entityTextToReact can't handle entity type ${entity.type}`,
       );
     }
   });
 }
 
 function pluralizeEntityText(
   nouns: $ReadOnlyArray<EntityText>,
   maxNumberOfNouns: number = 3,
 ): EntityText {
   return basePluralize<EntityText>(
     nouns,
     maxNumberOfNouns,
     (a: EntityText | string, b: ?EntityText | string) =>
       b ? ET`${a}${b}` : ET`${a}`,
   );
 }
 
 type TextEntity = { +type: 'text', +text: string };
 type ShadowUserEntity = {
   +type: 'shadowUser',
   +username: string,
   +originalUsername: string,
 };
 type EntityTextComponentAsObject =
   | UserEntity
   | ThreadEntity
   | ColorEntity
   | TextEntity
   | ShadowUserEntity;
 function entityTextToObjects(
   entityText: EntityText,
 ): EntityTextComponentAsObject[] {
   const objs = [];
   for (const entity of entityText) {
     if (typeof entity === 'string') {
       objs.push({ type: 'text', text: entity });
       continue;
     }
     objs.push(entity);
     if (
       entity.type === 'thread' &&
       entity.display === 'uiName' &&
       typeof entity.uiName !== 'string'
     ) {
       for (const innerEntity of entity.uiName) {
         if (typeof innerEntity === 'string' || innerEntity.type !== 'user') {
           continue;
         }
         const { username } = innerEntity;
         if (username) {
           objs.push({
             type: 'shadowUser',
             originalUsername: username,
             username,
           });
         }
       }
     }
   }
   return objs;
 }
 function entityTextFromObjects(
   objects: $ReadOnlyArray<EntityTextComponentAsObject>,
 ): EntityText {
   const shadowUserMap = new Map<string, string>();
   for (const obj of objects) {
     if (obj.type === 'shadowUser' && obj.username !== obj.originalUsername) {
       shadowUserMap.set(obj.originalUsername, obj.username);
     }
   }
   return objects
     .map(entity => {
       if (entity.type === 'text') {
         return entity.text;
       } else if (entity.type === 'shadowUser') {
         return null;
       } else if (
         entity.type === 'thread' &&
         entity.display === 'uiName' &&
         typeof entity.uiName !== 'string'
       ) {
         const uiName = [];
         let changeOccurred = false;
         for (const innerEntity of entity.uiName) {
           if (typeof innerEntity === 'string' || innerEntity.type !== 'user') {
             uiName.push(innerEntity);
             continue;
           }
           const { username } = innerEntity;
           if (!username) {
             uiName.push(innerEntity);
             continue;
           }
           const ensName = shadowUserMap.get(username);
           if (!ensName) {
             uiName.push(innerEntity);
             continue;
           }
           changeOccurred = true;
           uiName.push({
             ...innerEntity,
             username: ensName,
           });
         }
         if (!changeOccurred) {
           return entity;
         }
         return {
           ...entity,
           uiName,
         };
       } else {
         return entity;
       }
     })
     .filter(Boolean);
 }
 
-function useENSNamesForEntityText(entityText: ?EntityText): ?EntityText {
+function useENSNamesForEntityText(
+  entityText: ?EntityText,
+  options?: ?UseENSNamesOptions,
+): ?EntityText {
   const allObjects = React.useMemo(
     () => (entityText ? entityTextToObjects(entityText) : []),
     [entityText],
   );
-  const objectsWithENSNames = useENSNames(allObjects);
+  const objectsWithENSNames = useENSNames(allObjects, options);
   return React.useMemo(
     () =>
       entityText ? entityTextFromObjects(objectsWithENSNames) : entityText,
     [entityText, objectsWithENSNames],
   );
 }
 
 function useEntityTextAsString(
   entityText: ?EntityText,
   params?: EntityTextToRawStringParams,
 ): ?string {
   const withENSNames = useENSNamesForEntityText(entityText);
   return React.useMemo(() => {
     if (!withENSNames) {
       return withENSNames;
     }
     return entityTextToRawString(withENSNames, params);
   }, [withENSNames, params]);
 }
 
 async function getEntityTextAsString(
   entityText: ?EntityText,
   getENSNames: ?GetENSNames,
   params?: EntityTextToRawStringParams,
 ): Promise<?string> {
   if (!entityText) {
     return entityText;
   }
 
   let resolvedEntityText = entityText;
   if (getENSNames) {
     const allObjects = entityTextToObjects(entityText);
     const objectsWithENSNames = await getENSNames(allObjects);
     resolvedEntityText = entityTextFromObjects(objectsWithENSNames);
   }
 
   return entityTextToRawString(resolvedEntityText, params);
 }
 
 export {
   ET,
   entityTextToRawString,
   entityTextToReact,
   pluralizeEntityText,
   useENSNamesForEntityText,
   useEntityTextAsString,
   getEntityTextAsString,
 };