Migrate conversations to ESLint

.eslintignore

@@ -33,7 +33,8 @@ webpack.config.ts
 sticker-creator/**/*.ts
 sticker-creator/**/*.tsx
 ts/*.ts
-ts/components/conversation/**
+ts/components/*.ts
+ts/components/*.tsx
 ts/components/stickers/**
 ts/shims/**
 ts/sql/**

.eslintrc.js

@@ -118,6 +118,8 @@ module.exports = {
       rules: {
         ...rules,
         'import/no-extraneous-dependencies': 'off',
+        'react/jsx-props-no-spreading': 'off',
+        'react/no-array-index-key': 'off',
       },
     },
   ],

_locales/en/messages.json

@@ -151,6 +151,10 @@
     "message": "Set Up as Standalone Device",
     "description": "Only available on development modes, menu option to open up the standalone device setup sequence"
   },
+  "messageContextMenuButton": {
+    "message": "More actions",
+    "description": "Label for context button next to each message"
+  },
   "contextMenuCopyLink": {
     "message": "Copy Link",
     "description": "Shown in the context menu for a link to indicate that the user can copy the link"
@@ -985,6 +989,10 @@
   "theirIdentityUnknown": {
     "message": "You haven't exchanged any messages with this contact yet. Your safety number with them will be available after the first message."
   },
+  "goBack": {
+    "message": "Go back",
+    "description": "Label for back button in a conversation"
+  },
   "moreInfo": {
     "message": "More Info...",
     "description": "Shown on the drop-down menu for an individual message, takes you to message detail screen"
@@ -2772,6 +2780,14 @@
     "message": "Ringing...",
     "description": "Shown in the call screen when placing an outgoing call that is now ringing"
   },
+  "makeOutgoingCall": {
+    "message": "Start a call",
+    "description": "Title for the call button in a conversation"
+  },
+  "makeOutgoingVideoCall": {
+    "message": "Start a video call",
+    "description": "Title for the video call button in a conversation"
+  },
   "callReconnecting": {
     "message": "Reconnecting...",
     "description": "Shown in the call screen when the call is reconnecting due to network issues"
@@ -3574,7 +3590,7 @@
     }
   },
   "close": {
-    "message": "close",
+    "message": "Close",
     "description": "Generic close label"
   },
   "previous": {

ts/components/conversation/AddNewLines.tsx

@@ -13,15 +13,20 @@ export class AddNewLines extends React.Component<Props> {
     renderNonNewLine: ({ text }) => text,
   };
 
-  public render() {
+  public render():
+    | JSX.Element
+    | string
+    | null
+    | Array<JSX.Element | string | null> {
     const { text, renderNonNewLine } = this.props;
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     const results: Array<any> = [];
     const FIND_NEWLINES = /\n/g;
 
     // We have to do this, because renderNonNewLine is not required in our Props object,
     //  but it is always provided via defaultProps.
     if (!renderNonNewLine) {
-      return;
+      return null;
     }
 
     let match = FIND_NEWLINES.exec(text);
@@ -35,20 +40,20 @@ export class AddNewLines extends React.Component<Props> {
     while (match) {
       if (last < match.index) {
         const textWithNoNewline = text.slice(last, match.index);
-        results.push(
+        count += 1;
-          renderNonNewLine({ text: textWithNoNewline, key: count++ })
+        results.push(renderNonNewLine({ text: textWithNoNewline, key: count }));
-        );
       }
 
-      results.push(<br key={count++} />);
+      count += 1;
+      results.push(<br key={count} />);
 
-      // @ts-ignore
       last = FIND_NEWLINES.lastIndex;
       match = FIND_NEWLINES.exec(text);
     }
 
     if (last < text.length) {
-      results.push(renderNonNewLine({ text: text.slice(last), key: count++ }));
+      count += 1;
+      results.push(renderNonNewLine({ text: text.slice(last), key: count }));
     }
 
     return results;

ts/components/conversation/AttachmentList.stories.tsx

@@ -11,11 +11,9 @@ import {
   MIMEType,
   VIDEO_MP4,
 } from '../../types/MIME';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
+
 const i18n = setupI18n('en', enMessages);
 
 const story = storiesOf('Components/Conversation/AttachmentList', module);

ts/components/conversation/AttachmentList.tsx

@@ -27,18 +27,14 @@ export interface Props {
 const IMAGE_WIDTH = 120;
 const IMAGE_HEIGHT = 120;
 
-export class AttachmentList extends React.Component<Props> {
+export const AttachmentList = ({
-  // tslint:disable-next-line max-func-body-length */
-  public render() {
-    const {
   attachments,
   i18n,
   onAddAttachment,
   onClickAttachment,
   onCloseAttachment,
   onClose,
-    } = this.props;
+}: Props): JSX.Element | null => {
-
   if (!attachments.length) {
     return null;
   }
@@ -50,8 +46,10 @@ export class AttachmentList extends React.Component<Props> {
       {attachments.length > 1 ? (
         <div className="module-attachments__header">
           <button
+            type="button"
             onClick={onClose}
             className="module-attachments__close-button"
+            aria-label={i18n('close')}
           />
         </div>
       ) : null}
@@ -62,8 +60,7 @@ export class AttachmentList extends React.Component<Props> {
             isImageTypeSupported(contentType) ||
             isVideoTypeSupported(contentType)
           ) {
-              const imageKey =
+            const imageKey = getUrl(attachment) || attachment.fileName || index;
-                getUrl(attachment) || attachment.fileName || index;
             const clickCallback =
               attachments.length > 1 ? onClickAttachment : undefined;
 
@@ -75,12 +72,12 @@ export class AttachmentList extends React.Component<Props> {
                 ])}
                 i18n={i18n}
                 attachment={attachment}
-                  softCorners={true}
+                softCorners
                 playIconOverlay={isVideoAttachment(attachment)}
                 height={IMAGE_HEIGHT}
                 width={IMAGE_WIDTH}
                 url={getUrl(attachment)}
-                  closeButton={true}
+                closeButton
                 onClick={clickCallback}
                 onClickClose={onCloseAttachment}
                 onError={() => {
@@ -90,8 +87,7 @@ export class AttachmentList extends React.Component<Props> {
             );
           }
 
-            const genericKey =
+          const genericKey = getUrl(attachment) || attachment.fileName || index;
-              getUrl(attachment) || attachment.fileName || index;
 
           return (
             <StagedGenericAttachment
@@ -103,13 +99,9 @@ export class AttachmentList extends React.Component<Props> {
           );
         })}
         {allVisualAttachments ? (
-            <StagedPlaceholderAttachment
+          <StagedPlaceholderAttachment onClick={onAddAttachment} i18n={i18n} />
-              onClick={onAddAttachment}
-              i18n={i18n}
-            />
         ) : null}
       </div>
     </div>
   );
-  }
+};
-}

ts/components/conversation/CallingNotification.tsx

@@ -31,37 +31,30 @@ export function getCallingNotificationText(
     if (wasDeclined) {
       if (wasVideoCall) {
         return i18n('declinedIncomingVideoCall');
-      } else {
+      }
       return i18n('declinedIncomingAudioCall');
     }
-    } else if (wasAccepted) {
+    if (wasAccepted) {
       if (wasVideoCall) {
         return i18n('acceptedIncomingVideoCall');
-      } else {
+      }
       return i18n('acceptedIncomingAudioCall');
     }
-    } else {
     if (wasVideoCall) {
       return i18n('missedIncomingVideoCall');
-      } else {
+    }
     return i18n('missedIncomingAudioCall');
   }
-    }
-  } else {
   if (wasAccepted) {
     if (wasVideoCall) {
       return i18n('acceptedOutgoingVideoCall');
-      } else {
+    }
     return i18n('acceptedOutgoingAudioCall');
   }
-    } else {
   if (wasVideoCall) {
     return i18n('missedOrDeclinedOutgoingVideoCall');
-      } else {
+  }
   return i18n('missedOrDeclinedOutgoingAudioCall');
-      }
-    }
-  }
 }
 
 export const CallingNotification = (props: Props): JSX.Element | null => {
@@ -81,7 +74,7 @@ export const CallingNotification = (props: Props): JSX.Element | null => {
         <Timestamp
           i18n={i18n}
           timestamp={acceptedTime || endedTime}
-          extended={true}
+          extended
           direction="outgoing"
           withImageNoCaption={false}
           withSticker={false}

ts/components/conversation/ContactDetail.stories.tsx

@@ -6,11 +6,9 @@ import { storiesOf } from '@storybook/react';
 
 import { ContactDetail, Props } from './ContactDetail';
 import { AddressType, ContactFormType } from '../../types/Contact';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
+
 const i18n = setupI18n('en', enMessages);
 
 const story = storiesOf('Components/Conversation/ContactDetail', module);

ts/components/conversation/ContactDetail.tsx

@@ -72,6 +72,7 @@ function getLabelForAddress(
 }
 
 export class ContactDetail extends React.Component<Props> {
+  // eslint-disable-next-line class-methods-use-this
   public renderSendMessage({
     hasSignalAccount,
     i18n,
@@ -80,20 +81,24 @@ export class ContactDetail extends React.Component<Props> {
     hasSignalAccount: boolean;
     i18n: (key: string, values?: Array<string>) => string;
     onSendMessage: () => void;
-  }) {
+  }): JSX.Element | null {
     if (!hasSignalAccount) {
       return null;
     }
 
     // We don't want the overall click handler for this element to fire, so we stop
     //   propagation before handing control to the caller's callback.
-    const onClick = (e: React.MouseEvent<{}>): void => {
+    const onClick = (e: React.MouseEvent<HTMLButtonElement>): void => {
       e.stopPropagation();
       onSendMessage();
     };
 
     return (
-      <button className="module-contact-detail__send-message" onClick={onClick}>
+      <button
+        type="button"
+        className="module-contact-detail__send-message"
+        onClick={onClick}
+      >
         <div className="module-contact-detail__send-message__inner">
           <div className="module-contact-detail__send-message__bubble-icon" />
           {i18n('sendMessageToContact')}
@@ -102,9 +107,13 @@ export class ContactDetail extends React.Component<Props> {
     );
   }
 
-  public renderEmail(items: Array<Email> | undefined, i18n: LocalizerType) {
+  // eslint-disable-next-line class-methods-use-this
+  public renderEmail(
+    items: Array<Email> | undefined,
+    i18n: LocalizerType
+  ): Array<JSX.Element> | undefined {
     if (!items || items.length === 0) {
-      return;
+      return undefined;
     }
 
     return items.map((item: Email) => {
@@ -122,9 +131,13 @@ export class ContactDetail extends React.Component<Props> {
     });
   }
 
-  public renderPhone(items: Array<Phone> | undefined, i18n: LocalizerType) {
+  // eslint-disable-next-line class-methods-use-this
+  public renderPhone(
+    items: Array<Phone> | undefined,
+    i18n: LocalizerType
+  ): Array<JSX.Element> | null | undefined {
     if (!items || items.length === 0) {
-      return;
+      return undefined;
     }
 
     return items.map((item: Phone) => {
@@ -142,15 +155,20 @@ export class ContactDetail extends React.Component<Props> {
     });
   }
 
-  public renderAddressLine(value: string | undefined) {
+  // eslint-disable-next-line class-methods-use-this
+  public renderAddressLine(value: string | undefined): JSX.Element | undefined {
     if (!value) {
-      return;
+      return undefined;
     }
 
     return <div>{value}</div>;
   }
 
-  public renderPOBox(poBox: string | undefined, i18n: LocalizerType) {
+  // eslint-disable-next-line class-methods-use-this
+  public renderPOBox(
+    poBox: string | undefined,
+    i18n: LocalizerType
+  ): JSX.Element | null {
     if (!poBox) {
       return null;
     }
@@ -162,7 +180,8 @@ export class ContactDetail extends React.Component<Props> {
     );
   }
 
-  public renderAddressLineTwo(address: PostalAddress) {
+  // eslint-disable-next-line class-methods-use-this
+  public renderAddressLineTwo(address: PostalAddress): JSX.Element | null {
     if (address.city || address.region || address.postcode) {
       return (
         <div>
@@ -177,13 +196,14 @@ export class ContactDetail extends React.Component<Props> {
   public renderAddresses(
     addresses: Array<PostalAddress> | undefined,
     i18n: LocalizerType
-  ) {
+  ): Array<JSX.Element> | undefined {
     if (!addresses || addresses.length === 0) {
-      return;
+      return undefined;
     }
 
     return addresses.map((address: PostalAddress, index: number) => {
       return (
+        // eslint-disable-next-line react/no-array-index-key
         <div key={index} className="module-contact-detail__additional-contact">
           <div className="module-contact-detail__additional-contact__type">
             {getLabelForAddress(address, i18n)}
@@ -198,7 +218,7 @@ export class ContactDetail extends React.Component<Props> {
     });
   }
 
-  public render() {
+  public render(): JSX.Element {
     const { contact, hasSignalAccount, i18n, onSendMessage } = this.props;
     const isIncoming = false;
     const module = 'contact-detail';

ts/components/conversation/ContactName.stories.tsx

@@ -2,11 +2,8 @@ import * as React from 'react';
 
 import { storiesOf } from '@storybook/react';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
+import enMessages from '../../../_locales/en/messages.json';
-import enMessages from '../../../\_locales/en/messages.json';
-
 import { ContactName } from './ContactName';
 
 const i18n = setupI18n('en', enMessages);

ts/components/conversation/ContactName.tsx

@@ -12,15 +12,12 @@ export interface PropsType {
   profileName?: string;
 }
 
-export class ContactName extends React.Component<PropsType> {
+export const ContactName = ({ module, title }: PropsType): JSX.Element => {
-  public render() {
+  const prefix = module || 'module-contact-name';
-    const { module, title } = this.props;
-    const prefix = module ? module : 'module-contact-name';
 
   return (
     <span className={prefix} dir="auto">
       <Emojify text={title || ''} />
     </span>
   );
-  }
+};
-}

ts/components/conversation/ConversationHeader.stories.tsx

@@ -3,18 +3,14 @@ import * as React from 'react';
 import { storiesOf } from '@storybook/react';
 import { action } from '@storybook/addon-actions';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
+import enMessages from '../../../_locales/en/messages.json';
-import enMessages from '../../../\_locales/en/messages.json';
-
 import {
   ConversationHeader,
   PropsActionsType,
   PropsHousekeepingType,
   PropsType,
 } from './ConversationHeader';
-
 import { gifUrl } from '../../storybook/Fixtures';
 
 const book = storiesOf('Components/Conversation/ConversationHeader', module);

ts/components/conversation/ConversationHeader.tsx

@@ -71,6 +71,9 @@ export type PropsType = PropsDataType &
 
 export class ConversationHeader extends React.Component<PropsType> {
   public showMenuBound: (event: React.MouseEvent<HTMLButtonElement>) => void;
+
+  // Comes from a third-party dependency
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   public menuTriggerRef: React.RefObject<any>;
 
   public constructor(props: PropsType) {
@@ -80,28 +83,30 @@ export class ConversationHeader extends React.Component<PropsType> {
     this.showMenuBound = this.showMenu.bind(this);
   }
 
-  public showMenu(event: React.MouseEvent<HTMLButtonElement>) {
+  public showMenu(event: React.MouseEvent<HTMLButtonElement>): void {
     if (this.menuTriggerRef.current) {
       this.menuTriggerRef.current.handleContextClick(event);
     }
   }
 
-  public renderBackButton() {
+  public renderBackButton(): JSX.Element {
-    const { onGoBack, showBackButton } = this.props;
+    const { i18n, onGoBack, showBackButton } = this.props;
 
     return (
       <button
+        type="button"
         onClick={onGoBack}
         className={classNames(
           'module-conversation-header__back-icon',
           showBackButton ? 'module-conversation-header__back-icon--show' : null
         )}
         disabled={!showBackButton}
+        aria-label={i18n('goBack')}
       />
     );
   }
 
-  public renderTitle() {
+  public renderTitle(): JSX.Element {
     const {
       name,
       phoneNumber,
@@ -145,7 +150,7 @@ export class ConversationHeader extends React.Component<PropsType> {
     );
   }
 
-  public renderAvatar() {
+  public renderAvatar(): JSX.Element {
     const {
       avatarPath,
       color,
@@ -176,7 +181,7 @@ export class ConversationHeader extends React.Component<PropsType> {
     );
   }
 
-  public renderExpirationLength() {
+  public renderExpirationLength(): JSX.Element | null {
     const { expirationSettingName, showBackButton } = this.props;
 
     if (!expirationSettingName) {
@@ -200,12 +205,13 @@ export class ConversationHeader extends React.Component<PropsType> {
     );
   }
 
-  public renderMoreButton(triggerId: string) {
+  public renderMoreButton(triggerId: string): JSX.Element {
-    const { showBackButton } = this.props;
+    const { i18n, showBackButton } = this.props;
 
     return (
       <ContextMenuTrigger id={triggerId} ref={this.menuTriggerRef}>
         <button
+          type="button"
           onClick={this.showMenuBound}
           className={classNames(
             'module-conversation-header__more-button',
@@ -214,16 +220,18 @@ export class ConversationHeader extends React.Component<PropsType> {
               : 'module-conversation-header__more-button--show'
           )}
           disabled={showBackButton}
+          aria-label={i18n('moreInfo')}
         />
       </ContextMenuTrigger>
     );
   }
 
-  public renderSearchButton() {
+  public renderSearchButton(): JSX.Element {
-    const { onSearchInConversation, showBackButton } = this.props;
+    const { i18n, onSearchInConversation, showBackButton } = this.props;
 
     return (
       <button
+        type="button"
         onClick={onSearchInConversation}
         className={classNames(
           'module-conversation-header__search-button',
@@ -232,22 +240,31 @@ export class ConversationHeader extends React.Component<PropsType> {
             : 'module-conversation-header__search-button--show'
         )}
         disabled={showBackButton}
+        aria-label={i18n('search')}
       />
     );
   }
 
-  public renderOutgoingAudioCallButton() {
+  public renderOutgoingAudioCallButton(): JSX.Element | null {
     if (!window.CALLING) {
       return null;
     }
-    if (this.props.type === 'group' || this.props.isMe) {
+
+    const {
+      i18n,
+      isMe,
+      onOutgoingAudioCallInConversation,
+      showBackButton,
+      type,
+    } = this.props;
+
+    if (type === 'group' || isMe) {
       return null;
     }
 
-    const { onOutgoingAudioCallInConversation, showBackButton } = this.props;
-
     return (
       <button
+        type="button"
         onClick={onOutgoingAudioCallInConversation}
         className={classNames(
           'module-conversation-header__audio-calling-button',
@@ -256,15 +273,19 @@ export class ConversationHeader extends React.Component<PropsType> {
             : 'module-conversation-header__audio-calling-button--show'
         )}
         disabled={showBackButton}
+        aria-label={i18n('makeOutgoingCall')}
       />
     );
   }
 
-  public renderOutgoingVideoCallButton() {
+  public renderOutgoingVideoCallButton(): JSX.Element | null {
     if (!window.CALLING) {
       return null;
     }
-    if (this.props.type === 'group' || this.props.isMe) {
+
+    const { i18n, isMe, type } = this.props;
+
+    if (type === 'group' || isMe) {
       return null;
     }
 
@@ -272,6 +293,7 @@ export class ConversationHeader extends React.Component<PropsType> {
 
     return (
       <button
+        type="button"
         onClick={onOutgoingVideoCallInConversation}
         className={classNames(
           'module-conversation-header__video-calling-button',
@@ -280,11 +302,12 @@ export class ConversationHeader extends React.Component<PropsType> {
             : 'module-conversation-header__video-calling-button--show'
         )}
         disabled={showBackButton}
+        aria-label={i18n('makeOutgoingVideoCall')}
       />
     );
   }
 
-  public renderMenu(triggerId: string) {
+  public renderMenu(triggerId: string): JSX.Element {
     const {
       disableTimerChanges,
       i18n,
@@ -323,7 +346,9 @@ export class ConversationHeader extends React.Component<PropsType> {
     }
     muteOptions.push(...getMuteOptions(i18n));
 
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     const disappearingTitle = i18n('disappearingMessages') as any;
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     const muteTitle = i18n('muteNotificationsTitle') as any;
     const isGroup = type === 'group';
 
@@ -382,7 +407,7 @@ export class ConversationHeader extends React.Component<PropsType> {
     );
   }
 
-  public render() {
+  public render(): JSX.Element {
     const { id } = this.props;
     const triggerId = `conversation-${id}`;
 

ts/components/conversation/ConversationHero.stories.tsx

@@ -1,11 +1,9 @@
 import * as React from 'react';
 import { storiesOf } from '@storybook/react';
 import { number as numberKnob, text } from '@storybook/addon-knobs';
-import { ConversationHero } from './ConversationHero';
 
-// @ts-ignore
+import { ConversationHero } from './ConversationHero';
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
 
 const i18n = setupI18n('en', enMessages);
@@ -187,7 +185,7 @@ storiesOf('Components/Conversation/ConversationHero', module)
       <div style={{ width: '480px' }}>
         <ConversationHero
           i18n={i18n}
-          isMe={true}
+          isMe
           title={getTitle()}
           conversationType="direct"
           phoneNumber={getPhoneNumber()}

ts/components/conversation/ConversationHero.tsx

@@ -35,6 +35,8 @@ const renderMembershipRow = ({
     sharedGroupNames.length > 0
   ) {
     const firstThreeGroups = take(sharedGroupNames, 3).map((group, i) => (
+      // We cannot guarantee uniqueness of group names
+      // eslint-disable-next-line react/no-array-index-key
       <strong key={i} className={nameClassName}>
         <Emojify text={group} />
       </strong>
@@ -56,7 +58,8 @@ const renderMembershipRow = ({
           />
         </div>
       );
-    } else if (firstThreeGroups.length === 3) {
+    }
+    if (firstThreeGroups.length === 3) {
       return (
         <div className={className}>
           <Intl
@@ -70,7 +73,8 @@ const renderMembershipRow = ({
           />
         </div>
       );
-    } else if (firstThreeGroups.length >= 2) {
+    }
+    if (firstThreeGroups.length >= 2) {
       return (
         <div className={className}>
           <Intl
@@ -83,7 +87,8 @@ const renderMembershipRow = ({
           />
         </div>
       );
-    } else if (firstThreeGroups.length >= 1) {
+    }
+    if (firstThreeGroups.length >= 1) {
       return (
         <div className={className}>
           <Intl
@@ -115,9 +120,11 @@ export const ConversationHero = ({
   title,
   onHeightChange,
   updateSharedGroups,
-}: Props) => {
+}: Props): JSX.Element => {
   const firstRenderRef = React.useRef(true);
 
+  // TODO: DESKTOP-686
+  /* eslint-disable react-hooks/exhaustive-deps */
   React.useEffect(() => {
     // If any of the depenencies for this hook change then the height of this
     // component may have changed. The cleanup function notifies listeners of
@@ -144,11 +151,13 @@ export const ConversationHero = ({
     `pn-${profileName}`,
     sharedGroupNames.map(g => `g-${g}`).join(' '),
   ]);
+  /* eslint-enable react-hooks/exhaustive-deps */
 
   const phoneNumberOnly = Boolean(
     !name && !profileName && conversationType === 'direct'
   );
 
+  /* eslint-disable no-nested-ternary */
   return (
     <div className="module-conversation-hero">
       <Avatar
@@ -190,4 +199,5 @@ export const ConversationHero = ({
       {renderMembershipRow({ isMe, sharedGroupNames, conversationType, i18n })}
     </div>
   );
+  /* eslint-enable no-nested-ternary */
 };

ts/components/conversation/EmbeddedContact.stories.tsx

@@ -5,12 +5,10 @@ import { boolean, number } from '@storybook/addon-knobs';
 import { storiesOf } from '@storybook/react';
 
 import { EmbeddedContact, Props } from './EmbeddedContact';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
 import { ContactFormType } from '../../types/Contact';
+
 const i18n = setupI18n('en', enMessages);
 
 const story = storiesOf('Components/Conversation/EmbeddedContact', module);

ts/components/conversation/EmbeddedContact.tsx

@@ -21,7 +21,7 @@ export interface Props {
 }
 
 export class EmbeddedContact extends React.Component<Props> {
-  public render() {
+  public render(): JSX.Element {
     const {
       contact,
       i18n,
@@ -36,6 +36,7 @@ export class EmbeddedContact extends React.Component<Props> {
 
     return (
       <button
+        type="button"
         className={classNames(
           'module-embedded-contact',
           `module-embedded-contact--${direction}`,

ts/components/conversation/Emojify.tsx

@@ -13,7 +13,7 @@ function getImageTag({
   sizeClass,
   key,
 }: {
-  match: any;
+  match: RegExpExecArray;
   sizeClass?: SizeClassType;
   key: string | number;
 }) {
@@ -24,7 +24,6 @@ function getImageTag({
   }
 
   return (
-    // tslint:disable-next-line react-a11y-img-has-alt
     <img
       key={key}
       src={img}
@@ -48,15 +47,20 @@ export class Emojify extends React.Component<Props> {
     renderNonEmoji: ({ text }) => text,
   };
 
-  public render() {
+  public render():
+    | JSX.Element
+    | string
+    | null
+    | Array<JSX.Element | string | null> {
     const { text, sizeClass, renderNonEmoji } = this.props;
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     const results: Array<any> = [];
     const regex = emojiRegex();
 
     // We have to do this, because renderNonEmoji is not required in our Props object,
     //  but it is always provided via defaultProps.
     if (!renderNonEmoji) {
-      return;
+      return null;
     }
 
     let match = regex.exec(text);
@@ -70,17 +74,20 @@ export class Emojify extends React.Component<Props> {
     while (match) {
       if (last < match.index) {
         const textWithNoEmoji = text.slice(last, match.index);
-        results.push(renderNonEmoji({ text: textWithNoEmoji, key: count++ }));
+        count += 1;
+        results.push(renderNonEmoji({ text: textWithNoEmoji, key: count }));
       }
 
-      results.push(getImageTag({ match, sizeClass, key: count++ }));
+      count += 1;
+      results.push(getImageTag({ match, sizeClass, key: count }));
 
       last = regex.lastIndex;
       match = regex.exec(text);
     }
 
     if (last < text.length) {
-      results.push(renderNonEmoji({ text: text.slice(last), key: count++ }));
+      count += 1;
+      results.push(renderNonEmoji({ text: text.slice(last), key: count }));
     }
 
     return results;

ts/components/conversation/ExpireTimer.tsx

@@ -13,7 +13,7 @@ export interface Props {
 }
 
 export class ExpireTimer extends React.Component<Props> {
-  private interval: any;
+  private interval: NodeJS.Timeout | null;
 
   constructor(props: Props) {
     super(props);
@@ -21,26 +21,28 @@ export class ExpireTimer extends React.Component<Props> {
     this.interval = null;
   }
 
-  public componentDidMount() {
+  public componentDidMount(): void {
     const { expirationLength } = this.props;
     const increment = getIncrement(expirationLength);
     const updateFrequency = Math.max(increment, 500);
 
     const update = () => {
       this.setState({
+        // Used to trigger renders
+        // eslint-disable-next-line react/no-unused-state
         lastUpdated: Date.now(),
       });
     };
     this.interval = setInterval(update, updateFrequency);
   }
 
-  public componentWillUnmount() {
+  public componentWillUnmount(): void {
     if (this.interval) {
       clearInterval(this.interval);
     }
   }
 
-  public render() {
+  public render(): JSX.Element {
     const {
       direction,
       expirationLength,

ts/components/conversation/GroupNotification.tsx

@@ -33,7 +33,10 @@ type PropsHousekeeping = {
 export type Props = PropsData & PropsHousekeeping;
 
 export class GroupNotification extends React.Component<Props> {
-  public renderChange(change: Change, from: Contact) {
+  public renderChange(
+    change: Change,
+    from: Contact
+  ): JSX.Element | string | null | undefined {
     const { contacts, type, newName } = change;
     const { i18n } = this.props;
 
@@ -78,6 +81,7 @@ export class GroupNotification extends React.Component<Props> {
           throw new Error('Group update is missing contacts');
         }
 
+        // eslint-disable-next-line no-case-declarations
         const otherPeopleNotifMsg =
           otherPeople.length === 1
             ? 'joinedTheGroup'
@@ -108,6 +112,7 @@ export class GroupNotification extends React.Component<Props> {
           throw new Error('Group update is missing contacts');
         }
 
+        // eslint-disable-next-line no-case-declarations
         const leftKey =
           contacts.length > 1 ? 'multipleLeftTheGroup' : 'leftTheGroup';
 
@@ -115,13 +120,14 @@ export class GroupNotification extends React.Component<Props> {
           <Intl i18n={i18n} id={leftKey} components={[otherPeopleWithCommas]} />
         );
       case 'general':
+        // eslint-disable-next-line consistent-return
         return;
       default:
         throw missingCaseError(type);
     }
   }
 
-  public render() {
+  public render(): JSX.Element {
     const { changes, i18n, from } = this.props;
 
     // Leave messages are always from the person leaving, so we omit the fromLabel if
@@ -153,8 +159,9 @@ export class GroupNotification extends React.Component<Props> {
             <br />
           </>
         )}
-        {(changes || []).map((change, index) => (
+        {(changes || []).map((change, i) => (
-          <div key={index} className="module-group-notification__change">
+          // eslint-disable-next-line react/no-array-index-key
+          <div key={i} className="module-group-notification__change">
             {this.renderChange(change, from)}
           </div>
         ))}

ts/components/conversation/GroupV2Change.stories.tsx

@@ -1,11 +1,9 @@
+/* eslint-disable-next-line max-classes-per-file */
 import * as React from 'react';
-
-// @ts-ignore
-import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
-import enMessages from '../../../_locales/en/messages.json';
-
 import { storiesOf } from '@storybook/react';
+
+import { setup as setupI18n } from '../../../js/modules/i18n';
+import enMessages from '../../../_locales/en/messages.json';
 import { GroupV2ChangeType } from '../../groups';
 import { SmartContactRendererType } from '../../groupChange';
 import { GroupV2Change } from './GroupV2Change';
@@ -19,17 +17,21 @@ const CONTACT_C = 'CONTACT_C';
 const ADMIN_A = 'ADMIN_A';
 const INVITEE_A = 'INVITEE_A';
 
-// tslint:disable-next-line no-unnecessary-class
 class AccessControlEnum {
   static UNKNOWN = 0;
+
   static ADMINISTRATOR = 1;
+
   static ANY = 2;
+
   static MEMBER = 3;
 }
-// tslint:disable-next-line no-unnecessary-class
+
 class RoleEnum {
   static UNKNOWN = 0;
+
   static ADMINISTRATOR = 1;
+
   static DEFAULT = 2;
 }
 
@@ -468,7 +470,6 @@ storiesOf('Components/Conversation/GroupV2Change', module)
       </>
     );
   })
-  // tslint:disable-next-line max-func-body-length
   .add('Member Privilege', () => {
     return (
       <>
@@ -652,7 +653,6 @@ storiesOf('Components/Conversation/GroupV2Change', module)
       </>
     );
   })
-  // tslint:disable-next-line max-func-body-length
   .add('Pending Remove - one', () => {
     return (
       <>

ts/components/conversation/GroupV2Change.tsx

@@ -53,6 +53,8 @@ export function GroupV2Change(props: PropsType): React.ReactElement {
         renderString: renderStringToIntl,
         RoleEnum,
       }).map((item: FullJSXType, index: number) => (
+        // Difficult to find a unique key for this type
+        // eslint-disable-next-line react/no-array-index-key
         <div key={index}>{item}</div>
       ))}
     </div>

ts/components/conversation/Image.stories.tsx

@@ -7,16 +7,13 @@ import { storiesOf } from '@storybook/react';
 import { pngUrl } from '../../storybook/Fixtures';
 import { Image, Props } from './Image';
 import { IMAGE_PNG } from '../../types/MIME';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
+
 const i18n = setupI18n('en', enMessages);
 
 const story = storiesOf('Components/Conversation/Image', module);
 
-// tslint:disable-next-line:cyclomatic-complexity
 const createProps = (overrideProps: Partial<Props> = {}): Props => ({
   alt: text('alt', overrideProps.alt || ''),
   attachment: overrideProps.attachment || {
@@ -170,6 +167,7 @@ story.add('Blurhash', () => {
   const props = {
     ...defaultProps,
     blurHash: 'thisisafakeblurhashthatwasmadeup',
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     url: undefined as any,
   };
 
@@ -179,7 +177,9 @@ story.add('Missing Image', () => {
   const defaultProps = createProps();
   const props = {
     ...defaultProps,
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     attachment: undefined as any,
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     url: undefined as any,
   };
 

ts/components/conversation/Image.tsx

@@ -47,7 +47,7 @@ export class Image extends React.Component<Props> {
     return Boolean(onClick && !pending && url);
   }
 
-  public handleClick = (event: React.MouseEvent) => {
+  public handleClick = (event: React.MouseEvent): void => {
     if (!this.canClick()) {
       event.preventDefault();
       event.stopPropagation();
@@ -65,7 +65,9 @@ export class Image extends React.Component<Props> {
     }
   };
 
-  public handleKeyDown = (event: React.KeyboardEvent<HTMLButtonElement>) => {
+  public handleKeyDown = (
+    event: React.KeyboardEvent<HTMLButtonElement>
+  ): void => {
     if (!this.canClick()) {
       event.preventDefault();
       event.stopPropagation();
@@ -82,8 +84,7 @@ export class Image extends React.Component<Props> {
     }
   };
 
-  // tslint:disable-next-line max-func-body-length cyclomatic-complexity
+  public render(): JSX.Element {
-  public render() {
     const {
       alt,
       attachment,
@@ -127,7 +128,10 @@ export class Image extends React.Component<Props> {
     );
 
     const overlay = canClick ? (
+      // Not sure what this button does.
+      // eslint-disable-next-line jsx-a11y/control-has-associated-label
       <button
+        type="button"
         className={overlayClassName}
         onClick={this.handleClick}
         onKeyDown={this.handleKeyDown}
@@ -135,6 +139,7 @@ export class Image extends React.Component<Props> {
       />
     ) : null;
 
+    /* eslint-disable no-nested-ternary */
     return (
       <div
         className={classNames(
@@ -210,7 +215,8 @@ export class Image extends React.Component<Props> {
         {overlay}
         {closeButton ? (
           <button
-            onClick={(e: React.MouseEvent<{}>) => {
+            type="button"
+            onClick={(e: React.MouseEvent<HTMLButtonElement>) => {
               e.preventDefault();
               e.stopPropagation();
 
@@ -220,9 +226,11 @@ export class Image extends React.Component<Props> {
             }}
             className="module-image__close-button"
             title={i18n('remove-attachment')}
+            aria-label={i18n('remove-attachment')}
           />
         ) : null}
       </div>
     );
+    /* eslint-enable no-nested-ternary */
   }
 }

ts/components/conversation/ImageGrid.stories.tsx

@@ -13,12 +13,10 @@ import {
   MIMEType,
   VIDEO_MP4,
 } from '../../types/MIME';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
 import { pngUrl, squareStickerUrl } from '../../storybook/Fixtures';
+
 const i18n = setupI18n('en', enMessages);
 
 const story = storiesOf('Components/Conversation/ImageGrid', module);

ts/components/conversation/ImageGrid.tsx

@@ -30,10 +30,7 @@ export interface Props {
   onClick?: (attachment: AttachmentType) => void;
 }
 
-export class ImageGrid extends React.Component<Props> {
+export const ImageGrid = ({
-  // tslint:disable-next-line max-func-body-length */
-  public render() {
-    const {
   attachments,
   bottomOverlay,
   i18n,
@@ -44,12 +41,11 @@ export class ImageGrid extends React.Component<Props> {
   tabIndex,
   withContentAbove,
   withContentBelow,
-    } = this.props;
+}: Props): JSX.Element | null => {
-
+  const curveTopLeft = !withContentAbove;
-    const curveTopLeft = !Boolean(withContentAbove);
   const curveTopRight = curveTopLeft;
 
-    const curveBottom = !Boolean(withContentBelow);
+  const curveBottom = !withContentBelow;
   const curveBottomLeft = curveBottom;
   const curveBottomRight = curveBottom;
 
@@ -347,5 +343,4 @@ export class ImageGrid extends React.Component<Props> {
       </div>
     </div>
   );
-  }
+};
-}

ts/components/conversation/InlineNotificationWrapper.tsx

@@ -10,7 +10,7 @@ export type PropsType = {
 export class InlineNotificationWrapper extends React.Component<PropsType> {
   public focusRef: React.RefObject<HTMLDivElement> = React.createRef();
 
-  public setFocus = () => {
+  public setFocus = (): void => {
     const container = this.focusRef.current;
 
     if (container && !container.contains(document.activeElement)) {
@@ -18,14 +18,15 @@ export class InlineNotificationWrapper extends React.Component<PropsType> {
     }
   };
 
-  public handleFocus = () => {
+  public handleFocus = (): void => {
+    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
     // @ts-ignore
     if (window.getInteractionMode() === 'keyboard') {
       this.setSelected();
     }
   };
 
-  public setSelected = () => {
+  public setSelected = (): void => {
     const { id, conversationId, selectMessage } = this.props;
 
     if (selectMessage) {
@@ -33,25 +34,28 @@ export class InlineNotificationWrapper extends React.Component<PropsType> {
     }
   };
 
-  public componentDidMount() {
+  public componentDidMount(): void {
     const { isSelected } = this.props;
     if (isSelected) {
       this.setFocus();
     }
   }
 
-  public componentDidUpdate(prevProps: PropsType) {
+  public componentDidUpdate(prevProps: PropsType): void {
-    if (!prevProps.isSelected && this.props.isSelected) {
+    const { isSelected } = this.props;
+
+    if (!prevProps.isSelected && isSelected) {
       this.setFocus();
     }
   }
 
-  public render() {
+  public render(): JSX.Element {
     const { children } = this.props;
 
     return (
       <div
         className="module-inline-notification-wrapper"
+        // eslint-disable-next-line jsx-a11y/no-noninteractive-tabindex
         tabIndex={0}
         ref={this.focusRef}
         onFocus={this.handleFocus}

ts/components/conversation/LastSeenIndicator.stories.tsx

@@ -4,11 +4,9 @@ import { number } from '@storybook/addon-knobs';
 import { storiesOf } from '@storybook/react';
 
 import { LastSeenIndicator, Props } from './LastSeenIndicator';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
+
 const i18n = setupI18n('en', enMessages);
 
 const story = storiesOf('Components/Conversation/LastSeenIndicator', module);

ts/components/conversation/LastSeenIndicator.tsx

@@ -7,10 +7,7 @@ export type Props = {
   i18n: LocalizerType;
 };
 
-export class LastSeenIndicator extends React.Component<Props> {
+export const LastSeenIndicator = ({ count, i18n }: Props): JSX.Element => {
-  public render() {
-    const { count, i18n } = this.props;
-
   const message =
     count === 1
       ? i18n('unreadMessage')
@@ -22,5 +19,4 @@ export class LastSeenIndicator extends React.Component<Props> {
       <div className="module-last-seen-indicator__text">{message}</div>
     </div>
   );
-  }
+};
-}

ts/components/conversation/Linkify.tsx

@@ -20,17 +20,21 @@ export class Linkify extends React.Component<Props> {
     renderNonLink: ({ text }) => text,
   };
 
-  public render() {
+  public render():
+    | JSX.Element
+    | string
+    | null
+    | Array<JSX.Element | string | null> {
     const { text, renderNonLink } = this.props;
     const matchData = linkify.match(text) || [];
-    const results: Array<any> = [];
+    const results: Array<JSX.Element | string> = [];
     let last = 0;
     let count = 1;
 
     // We have to do this, because renderNonLink is not required in our Props object,
     //  but it is always provided via defaultProps.
     if (!renderNonLink) {
-      return;
+      return null;
     }
 
     if (matchData.length === 0) {
@@ -46,18 +50,20 @@ export class Linkify extends React.Component<Props> {
       }) => {
         if (last < match.index) {
           const textWithNoLink = text.slice(last, match.index);
-          results.push(renderNonLink({ text: textWithNoLink, key: count++ }));
+          count += 1;
+          results.push(renderNonLink({ text: textWithNoLink, key: count }));
         }
 
         const { url, text: originalText } = match;
+        count += 1;
         if (SUPPORTED_PROTOCOLS.test(url) && !isLinkSneaky(url)) {
           results.push(
-            <a key={count++} href={url}>
+            <a key={count} href={url}>
               {originalText}
             </a>
           );
         } else {
-          results.push(renderNonLink({ text: originalText, key: count++ }));
+          results.push(renderNonLink({ text: originalText, key: count }));
         }
 
         last = match.lastIndex;
@@ -65,7 +71,8 @@ export class Linkify extends React.Component<Props> {
     );
 
     if (last < text.length) {
-      results.push(renderNonLink({ text: text.slice(last), key: count++ }));
+      count += 1;
+      results.push(renderNonLink({ text: text.slice(last), key: count }));
     }
 
     return results;

ts/components/conversation/Message.stories.tsx

@@ -15,12 +15,10 @@ import {
   MIMEType,
   VIDEO_MP4,
 } from '../../types/MIME';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
 import { pngUrl } from '../../storybook/Fixtures';
+
 const i18n = setupI18n('en', enMessages);
 
 const story = storiesOf('Components/Conversation/Message', module);
@@ -75,7 +73,7 @@ const createProps = (overrideProps: Partial<Props> = {}): Props => ({
   previews: overrideProps.previews || [],
   reactions: overrideProps.reactions,
   reactToMessage: action('reactToMessage'),
-  renderEmojiPicker: renderEmojiPicker,
+  renderEmojiPicker,
   replyToMessage: action('replyToMessage'),
   retrySend: action('retrySend'),
   scrollToQuotedMessage: action('scrollToQuotedMessage'),
@@ -195,7 +193,6 @@ story.add('Older', () => {
   return renderBothDirections(props);
 });
 
-// tslint:disable-next-line:max-func-body-length
 story.add('Reactions', () => {
   const props = createProps({
     text: 'Hello there from a pal!',

ts/components/conversation/Message.tsx

@@ -3,6 +3,7 @@ import ReactDOM, { createPortal } from 'react-dom';
 import classNames from 'classnames';
 import Measure from 'react-measure';
 import { drop, groupBy, orderBy, take } from 'lodash';
+import { ContextMenu, ContextMenuTrigger, MenuItem } from 'react-contextmenu';
 import { Manager, Popper, Reference } from 'react-popper';
 import moment, { Moment } from 'moment';
 
@@ -24,6 +25,7 @@ import { Props as ReactionPickerProps, ReactionPicker } from './ReactionPicker';
 import { Emoji } from '../emoji/Emoji';
 
 import {
+  AttachmentType,
   canDisplayImage,
   getExtensionForDisplay,
   getGridDimensions,
@@ -34,8 +36,7 @@ import {
   isImage,
   isImageAttachment,
   isVideo,
-} from '../../../ts/types/Attachment';
+} from '../../types/Attachment';
-import { AttachmentType } from '../../types/Attachment';
 import { ContactType } from '../../types/Contact';
 
 import { getIncrement } from '../../util/timer';
@@ -43,7 +44,6 @@ import { isFileDangerous } from '../../util/isFileDangerous';
 import { BodyRangesType, LocalizerType } from '../../types/Util';
 import { ColorType } from '../../types/Colors';
 import { createRefMerger } from '../_util';
-import { ContextMenu, ContextMenuTrigger, MenuItem } from 'react-contextmenu';
 
 interface Trigger {
   handleContextClick: (event: React.MouseEvent<HTMLDivElement>) => void;
@@ -209,18 +209,24 @@ const EXPIRED_DELAY = 600;
 
 export class Message extends React.PureComponent<Props, State> {
   public menuTriggerRef: Trigger | undefined;
+
   public audioRef: React.RefObject<HTMLAudioElement> = React.createRef();
+
   public focusRef: React.RefObject<HTMLDivElement> = React.createRef();
+
   public reactionsContainerRef: React.RefObject<
     HTMLDivElement
   > = React.createRef();
+
   public reactionsContainerRefMerger = createRefMerger();
 
   public wideMl: MediaQueryList;
 
-  public expirationCheckInterval: any;
+  public expirationCheckInterval: NodeJS.Timeout | undefined;
-  public expiredTimeout: any;
+
-  public selectedTimeout: any;
+  public expiredTimeout: NodeJS.Timeout | undefined;
+
+  public selectedTimeout: NodeJS.Timeout | undefined;
 
   public constructor(props: Props) {
     super(props);
@@ -268,24 +274,23 @@ export class Message extends React.PureComponent<Props, State> {
     return state;
   }
 
-  public handleWideMlChange = (event: MediaQueryListEvent) => {
+  public handleWideMlChange = (event: MediaQueryListEvent): void => {
     this.setState({ isWide: event.matches });
   };
 
-  public captureMenuTrigger = (triggerRef: Trigger) => {
+  public captureMenuTrigger = (triggerRef: Trigger): void => {
     this.menuTriggerRef = triggerRef;
   };
 
-  public showMenu = (event: React.MouseEvent<HTMLDivElement>) => {
+  public showMenu = (event: React.MouseEvent<HTMLDivElement>): void => {
     if (this.menuTriggerRef) {
       this.menuTriggerRef.handleContextClick(event);
     }
   };
 
-  public handleImageError = () => {
+  public handleImageError = (): void => {
     const { id } = this.props;
-    // tslint:disable-next-line no-console
+    window.log.info(
-    console.log(
       `Message ${id}: Image failed to load; failing over to placeholder`
     );
     this.setState({
@@ -293,7 +298,7 @@ export class Message extends React.PureComponent<Props, State> {
     });
   };
 
-  public handleFocus = () => {
+  public handleFocus = (): void => {
     const { interactionMode } = this.props;
 
     if (interactionMode === 'keyboard') {
@@ -301,7 +306,7 @@ export class Message extends React.PureComponent<Props, State> {
     }
   };
 
-  public setSelected = () => {
+  public setSelected = (): void => {
     const { id, conversationId, selectMessage } = this.props;
 
     if (selectMessage) {
@@ -309,7 +314,7 @@ export class Message extends React.PureComponent<Props, State> {
     }
   };
 
-  public setFocus = () => {
+  public setFocus = (): void => {
     const container = this.focusRef.current;
 
     if (container && !container.contains(document.activeElement)) {
@@ -317,7 +322,7 @@ export class Message extends React.PureComponent<Props, State> {
     }
   };
 
-  public componentDidMount() {
+  public componentDidMount(): void {
     this.startSelectedTimer();
 
     const { isSelected } = this.props;
@@ -340,7 +345,7 @@ export class Message extends React.PureComponent<Props, State> {
     }, checkFrequency);
   }
 
-  public componentWillUnmount() {
+  public componentWillUnmount(): void {
     if (this.selectedTimeout) {
       clearInterval(this.selectedTimeout);
     }
@@ -356,18 +361,20 @@ export class Message extends React.PureComponent<Props, State> {
     this.wideMl.removeEventListener('change', this.handleWideMlChange);
   }
 
-  public componentDidUpdate(prevProps: Props) {
+  public componentDidUpdate(prevProps: Props): void {
+    const { isSelected } = this.props;
+
     this.startSelectedTimer();
 
-    if (!prevProps.isSelected && this.props.isSelected) {
+    if (!prevProps.isSelected && isSelected) {
       this.setFocus();
     }
 
     this.checkExpired();
   }
 
-  public startSelectedTimer() {
+  public startSelectedTimer(): void {
-    const { interactionMode } = this.props;
+    const { clearSelectedMessage, interactionMode } = this.props;
     const { isSelected } = this.state;
 
     if (interactionMode === 'keyboard' || !isSelected) {
@@ -378,12 +385,12 @@ export class Message extends React.PureComponent<Props, State> {
       this.selectedTimeout = setTimeout(() => {
         this.selectedTimeout = undefined;
         this.setState({ isSelected: false });
-        this.props.clearSelectedMessage();
+        clearSelectedMessage();
       }, SELECTED_TIMEOUT);
     }
   }
 
-  public checkExpired() {
+  public checkExpired(): void {
     const now = Date.now();
     const { isExpired, expirationTimestamp, expirationLength } = this.props;
 
@@ -408,7 +415,7 @@ export class Message extends React.PureComponent<Props, State> {
     }
   }
 
-  public renderTimestamp() {
+  public renderTimestamp(): JSX.Element {
     const {
       direction,
       i18n,
@@ -442,6 +449,7 @@ export class Message extends React.PureComponent<Props, State> {
             i18n('sendFailed')
           ) : (
             <button
+              type="button"
               className="module-message__metadata__tapable"
               onClick={(event: React.MouseEvent) => {
                 event.stopPropagation();
@@ -463,7 +471,7 @@ export class Message extends React.PureComponent<Props, State> {
       <Timestamp
         i18n={i18n}
         timestamp={timestamp}
-        extended={true}
+        extended
         direction={metadataDirection}
         withImageNoCaption={withImageNoCaption}
         withSticker={isSticker}
@@ -473,8 +481,7 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  // tslint:disable-next-line cyclomatic-complexity
+  public renderMetadata(): JSX.Element | null {
-  public renderMetadata() {
     const {
       collapseMetadata,
       direction,
@@ -548,7 +555,7 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  public renderAuthor() {
+  public renderAuthor(): JSX.Element | null {
     const {
       authorTitle,
       authorName,
@@ -564,7 +571,7 @@ export class Message extends React.PureComponent<Props, State> {
     } = this.props;
 
     if (collapseMetadata) {
-      return;
+      return null;
     }
 
     if (
@@ -597,8 +604,7 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  // tslint:disable-next-line max-func-body-length cyclomatic-complexity
+  public renderAttachment(): JSX.Element | null {
-  public renderAttachment() {
     const {
       attachments,
       collapseMetadata,
@@ -667,11 +673,12 @@ export class Message extends React.PureComponent<Props, State> {
           />
         </div>
       );
-    } else if (!firstAttachment.pending && isAudio(attachments)) {
+    }
+    if (!firstAttachment.pending && isAudio(attachments)) {
       return (
         <audio
           ref={this.audioRef}
-          controls={true}
+          controls
           className={classNames(
             'module-message__audio-attachment',
             withContentBelow
@@ -686,13 +693,14 @@ export class Message extends React.PureComponent<Props, State> {
           <source src={firstAttachment.url} />
         </audio>
       );
-    } else {
+    }
     const { pending, fileName, fileSize, contentType } = firstAttachment;
     const extension = getExtensionForDisplay({ contentType, fileName });
     const isDangerous = isFileDangerous(fileName || '');
 
     return (
       <button
+        type="button"
         className={classNames(
           'module-message__generic-attachment',
           withContentBelow
@@ -759,10 +767,8 @@ export class Message extends React.PureComponent<Props, State> {
       </button>
     );
   }
-  }
 
-  // tslint:disable-next-line cyclomatic-complexity max-func-body-length
+  public renderPreview(): JSX.Element | null {
-  public renderPreview() {
     const {
       attachments,
       conversationType,
@@ -809,6 +815,7 @@ export class Message extends React.PureComponent<Props, State> {
 
     return (
       <button
+        type="button"
         className={classNames(
           'module-message__link-preview',
           `module-message__link-preview--${direction}`,
@@ -835,7 +842,7 @@ export class Message extends React.PureComponent<Props, State> {
           <ImageGrid
             attachments={[first.image]}
             withContentAbove={withContentAbove}
-            withContentBelow={true}
+            withContentBelow
             onError={this.handleImageError}
             i18n={i18n}
           />
@@ -852,9 +859,9 @@ export class Message extends React.PureComponent<Props, State> {
             <div className="module-message__link-preview__icon_container">
               <Image
                 smallCurveTopLeft={!withContentAbove}
-                noBorder={true}
+                noBorder
-                noBackground={true}
+                noBackground
-                softCorners={true}
+                softCorners
                 alt={i18n('previewThumbnail', [first.domain])}
                 height={72}
                 width={72}
@@ -900,7 +907,7 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  public renderQuote() {
+  public renderQuote(): JSX.Element | null {
     const {
       conversationType,
       authorColor,
@@ -952,7 +959,7 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  public renderEmbeddedContact() {
+  public renderEmbeddedContact(): JSX.Element | null {
     const {
       collapseMetadata,
       contact,
@@ -989,7 +996,7 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  public renderSendMessageButton() {
+  public renderSendMessageButton(): JSX.Element | null {
     const { contact, openConversation, i18n } = this.props;
     if (!contact || !contact.signalAccount) {
       return null;
@@ -997,6 +1004,7 @@ export class Message extends React.PureComponent<Props, State> {
 
     return (
       <button
+        type="button"
         onClick={() => {
           if (contact.signalAccount) {
             openConversation(contact.signalAccount);
@@ -1009,7 +1017,7 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  public renderAvatar() {
+  public renderAvatar(): JSX.Element | undefined {
     const {
       authorAvatarPath,
       authorName,
@@ -1031,6 +1039,7 @@ export class Message extends React.PureComponent<Props, State> {
       return;
     }
 
+    // eslint-disable-next-line consistent-return
     return (
       <div className="module-message__author-avatar">
         <Avatar
@@ -1048,7 +1057,7 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  public renderText() {
+  public renderText(): JSX.Element | null {
     const {
       bodyRanges,
       deletedForEveryone,
@@ -1060,6 +1069,7 @@ export class Message extends React.PureComponent<Props, State> {
       textPending,
     } = this.props;
 
+    // eslint-disable-next-line no-nested-ternary
     const contents = deletedForEveryone
       ? i18n('message--deletedForEveryone')
       : direction === 'incoming' && status === 'error'
@@ -1093,7 +1103,7 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  public renderError(isCorrectSide: boolean) {
+  public renderError(isCorrectSide: boolean): JSX.Element | null {
     const { status, direction } = this.props;
 
     if (!isCorrectSide || (status !== 'error' && status !== 'partial-sent')) {
@@ -1112,10 +1122,12 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  public renderMenu(isCorrectSide: boolean, triggerId: string) {
+  public renderMenu(
+    isCorrectSide: boolean,
+    triggerId: string
+  ): JSX.Element | null {
     const {
       attachments,
-      // tslint:disable-next-line max-func-body-length
       canReply,
       direction,
       disableMenu,
@@ -1123,8 +1135,10 @@ export class Message extends React.PureComponent<Props, State> {
       id,
       isSticker,
       isTapToView,
+      reactToMessage,
       renderEmojiPicker,
       replyToMessage,
+      selectedReaction,
     } = this.props;
 
     if (!isCorrectSide || disableMenu) {
@@ -1142,10 +1156,13 @@ export class Message extends React.PureComponent<Props, State> {
       !isTapToView &&
       firstAttachment &&
       !firstAttachment.pending ? (
+        // This a menu meant for mouse use only
+        // eslint-disable-next-line max-len
+        // eslint-disable-next-line jsx-a11y/interactive-supports-focus, jsx-a11y/click-events-have-key-events
         <div
           onClick={this.openGenericAttachment}
-          // This a menu meant for mouse use only
           role="button"
+          aria-label={i18n('downloadAttachment')}
           className={classNames(
             'module-message__buttons__download',
             `module-message__buttons__download--${direction}`
@@ -1161,6 +1178,9 @@ export class Message extends React.PureComponent<Props, State> {
           const maybePopperRef = isWide ? popperRef : undefined;
 
           return (
+            // This a menu meant for mouse use only
+            // eslint-disable-next-line max-len
+            // eslint-disable-next-line jsx-a11y/interactive-supports-focus, jsx-a11y/click-events-have-key-events
             <div
               ref={maybePopperRef}
               onClick={(event: React.MouseEvent) => {
@@ -1171,6 +1191,7 @@ export class Message extends React.PureComponent<Props, State> {
               }}
               role="button"
               className="module-message__buttons__react"
+              aria-label={i18n('reactToMessage')}
             />
           );
         }}
@@ -1178,6 +1199,9 @@ export class Message extends React.PureComponent<Props, State> {
     );
 
     const replyButton = (
+      // This a menu meant for mouse use only
+      // eslint-disable-next-line max-len
+      // eslint-disable-next-line jsx-a11y/interactive-supports-focus, jsx-a11y/click-events-have-key-events
       <div
         onClick={(event: React.MouseEvent) => {
           event.stopPropagation();
@@ -1187,6 +1211,7 @@ export class Message extends React.PureComponent<Props, State> {
         }}
         // This a menu meant for mouse use only
         role="button"
+        aria-label={i18n('replyToMessage')}
         className={classNames(
           'module-message__buttons__reply',
           `module-message__buttons__download--${direction}`
@@ -1194,6 +1219,9 @@ export class Message extends React.PureComponent<Props, State> {
       />
     );
 
+    // This a menu meant for mouse use only
+    /* eslint-disable jsx-a11y/interactive-supports-focus */
+    /* eslint-disable jsx-a11y/click-events-have-key-events */
     const menuButton = (
       <Reference>
         {({ ref: popperRef }) => {
@@ -1205,13 +1233,14 @@ export class Message extends React.PureComponent<Props, State> {
           return (
             <ContextMenuTrigger
               id={triggerId}
+              // eslint-disable-next-line @typescript-eslint/no-explicit-any
               ref={this.captureMenuTrigger as any}
             >
               <div
-                // This a menu meant for mouse use only
                 ref={maybePopperRef}
                 role="button"
                 onClick={this.showMenu}
+                aria-label={i18n('messageContextMenuButton')}
                 className={classNames(
                   'module-message__buttons__menu',
                   `module-message__buttons__download--${direction}`
@@ -1222,6 +1251,8 @@ export class Message extends React.PureComponent<Props, State> {
         }}
       </Reference>
     );
+    /* eslint-enable jsx-a11y/interactive-supports-focus */
+    /* eslint-enable jsx-a11y/click-events-have-key-events */
 
     return (
       <Manager>
@@ -1238,19 +1269,20 @@ export class Message extends React.PureComponent<Props, State> {
         </div>
         {reactionPickerRoot &&
           createPortal(
+            // eslint-disable-next-line consistent-return
             <Popper placement="top">
               {({ ref, style }) => (
                 <ReactionPicker
                   i18n={i18n}
                   ref={ref}
                   style={style}
-                  selected={this.props.selectedReaction}
+                  selected={selectedReaction}
                   onClose={this.toggleReactionPicker}
                   onPick={emoji => {
                     this.toggleReactionPicker(true);
-                    this.props.reactToMessage(id, {
+                    reactToMessage(id, {
                       emoji,
-                      remove: emoji === this.props.selectedReaction,
+                      remove: emoji === selectedReaction,
                     });
                   }}
                   renderEmojiPicker={renderEmojiPicker}
@@ -1263,8 +1295,7 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  // tslint:disable-next-line max-func-body-length
+  public renderContextMenu(triggerId: string): JSX.Element {
-  public renderContextMenu(triggerId: string) {
     const {
       attachments,
       canReply,
@@ -1396,7 +1427,7 @@ export class Message extends React.PureComponent<Props, State> {
       const first = previews[0];
 
       if (!first || !first.image) {
-        return;
+        return undefined;
       }
       const { width } = first.image;
 
@@ -1414,9 +1445,11 @@ export class Message extends React.PureComponent<Props, State> {
       }
     }
 
-    return;
+    return undefined;
   }
 
+  // Messy return here.
+  // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
   public isShowingImage() {
     const { isTapToView, attachments, previews } = this.props;
     const { imageBroken } = this.state;
@@ -1449,7 +1482,7 @@ export class Message extends React.PureComponent<Props, State> {
     return false;
   }
 
-  public isAttachmentPending() {
+  public isAttachmentPending(): boolean {
     const { attachments } = this.props;
 
     if (!attachments || attachments.length < 1) {
@@ -1461,7 +1494,7 @@ export class Message extends React.PureComponent<Props, State> {
     return Boolean(first.pending);
   }
 
-  public renderTapToViewIcon() {
+  public renderTapToViewIcon(): JSX.Element {
     const { direction, isTapToViewExpired } = this.props;
     const isDownloadPending = this.isAttachmentPending();
 
@@ -1482,7 +1515,7 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  public renderTapToViewText() {
+  public renderTapToViewText(): string | undefined {
     const {
       attachments,
       direction,
@@ -1505,6 +1538,7 @@ export class Message extends React.PureComponent<Props, State> {
       return;
     }
 
+    // eslint-disable-next-line consistent-return, no-nested-ternary
     return isTapToViewError
       ? i18n('incomingError')
       : direction === 'outgoing'
@@ -1512,7 +1546,7 @@ export class Message extends React.PureComponent<Props, State> {
       : incomingString;
   }
 
-  public renderTapToView() {
+  public renderTapToView(): JSX.Element {
     const {
       collapseMetadata,
       conversationType,
@@ -1558,7 +1592,7 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  public toggleReactionViewer = (onlyRemove = false) => {
+  public toggleReactionViewer = (onlyRemove = false): void => {
     this.setState(({ reactionViewerRoot }) => {
       if (reactionViewerRoot) {
         document.body.removeChild(reactionViewerRoot);
@@ -1589,7 +1623,7 @@ export class Message extends React.PureComponent<Props, State> {
     });
   };
 
-  public toggleReactionPicker = (onlyRemove = false) => {
+  public toggleReactionPicker = (onlyRemove = false): void => {
     this.setState(({ reactionPickerRoot }) => {
       if (reactionPickerRoot) {
         document.body.removeChild(reactionPickerRoot);
@@ -1620,7 +1654,7 @@ export class Message extends React.PureComponent<Props, State> {
     });
   };
 
-  public handleClickOutsideReactionViewer = (e: MouseEvent) => {
+  public handleClickOutsideReactionViewer = (e: MouseEvent): void => {
     const { reactionViewerRoot } = this.state;
     const { current: reactionsContainer } = this.reactionsContainerRef;
     if (reactionViewerRoot && reactionsContainer) {
@@ -1633,7 +1667,7 @@ export class Message extends React.PureComponent<Props, State> {
     }
   };
 
-  public handleClickOutsideReactionPicker = (e: MouseEvent) => {
+  public handleClickOutsideReactionPicker = (e: MouseEvent): void => {
     const { reactionPickerRoot } = this.state;
     if (reactionPickerRoot) {
       if (!reactionPickerRoot.contains(e.target as HTMLElement)) {
@@ -1642,8 +1676,7 @@ export class Message extends React.PureComponent<Props, State> {
     }
   };
 
-  // tslint:disable-next-line max-func-body-length
+  public renderReactions(outgoing: boolean): JSX.Element | null {
-  public renderReactions(outgoing: boolean) {
     const { reactions, i18n } = this.props;
 
     if (!reactions || (reactions && reactions.length === 0)) {
@@ -1726,6 +1759,8 @@ export class Message extends React.PureComponent<Props, State> {
 
                 return (
                   <button
+                    type="button"
+                    // eslint-disable-next-line react/no-array-index-key
                     key={`${re.emoji}-${i}`}
                     className={classNames(
                       'module-message__reactions__reaction',
@@ -1764,7 +1799,7 @@ export class Message extends React.PureComponent<Props, State> {
                         +{maybeNotRenderedTotal}
                       </span>
                     ) : (
-                      <React.Fragment>
+                      <>
                         <Emoji size={16} emoji={re.emoji} />
                         {re.count > 1 ? (
                           <span
@@ -1778,7 +1813,7 @@ export class Message extends React.PureComponent<Props, State> {
                             {re.count}
                           </span>
                         ) : null}
-                      </React.Fragment>
+                      </>
                     )}
                   </button>
                 );
@@ -1808,7 +1843,7 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  public renderContents() {
+  public renderContents(): JSX.Element | null {
     const { isTapToView, deletedForEveryone } = this.props;
 
     if (deletedForEveryone) {
@@ -1837,10 +1872,9 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  // tslint:disable-next-line cyclomatic-complexity max-func-body-length
   public handleOpen = (
     event: React.KeyboardEvent<HTMLDivElement> | React.MouseEvent
-  ) => {
+  ): void => {
     const {
       attachments,
       contact,
@@ -1923,10 +1957,8 @@ export class Message extends React.PureComponent<Props, State> {
       event.stopPropagation();
 
       if (this.audioRef.current.paused) {
-        // tslint:disable-next-line no-floating-promises
         this.audioRef.current.play();
       } else {
-        // tslint:disable-next-line no-floating-promises
         this.audioRef.current.pause();
       }
     }
@@ -1946,7 +1978,7 @@ export class Message extends React.PureComponent<Props, State> {
     }
   };
 
-  public openGenericAttachment = (event?: React.MouseEvent) => {
+  public openGenericAttachment = (event?: React.MouseEvent): void => {
     const { attachments, downloadAttachment, timestamp } = this.props;
 
     if (event) {
@@ -1969,7 +2001,7 @@ export class Message extends React.PureComponent<Props, State> {
     });
   };
 
-  public handleKeyDown = (event: React.KeyboardEvent<HTMLDivElement>) => {
+  public handleKeyDown = (event: React.KeyboardEvent<HTMLDivElement>): void => {
     // Do not allow reactions to error messages
     const { canReply } = this.props;
 
@@ -1989,7 +2021,7 @@ export class Message extends React.PureComponent<Props, State> {
     this.handleOpen(event);
   };
 
-  public handleClick = (event: React.MouseEvent) => {
+  public handleClick = (event: React.MouseEvent): void => {
     // We don't want clicks on body text to result in the 'default action' for the message
     const { text } = this.props;
     if (text && text.length > 0) {
@@ -2008,8 +2040,7 @@ export class Message extends React.PureComponent<Props, State> {
     this.handleOpen(event);
   };
 
-  // tslint:disable-next-line: cyclomatic-complexity
+  public renderContainer(): JSX.Element {
-  public renderContainer() {
     const {
       authorColor,
       deletedForEveryone,
@@ -2061,7 +2092,7 @@ export class Message extends React.PureComponent<Props, State> {
 
     return (
       <Measure
-        bounds={true}
+        bounds
         onResize={({ bounds = { width: 0 } }) => {
           this.setState({ containerWidth: bounds.width });
         }}
@@ -2081,8 +2112,7 @@ export class Message extends React.PureComponent<Props, State> {
     );
   }
 
-  // tslint:disable-next-line cyclomatic-complexity
+  public render(): JSX.Element | null {
-  public render() {
     const {
       authorPhoneNumber,
       attachments,

ts/components/conversation/MessageBody.stories.tsx

@@ -4,11 +4,9 @@ import { boolean, text } from '@storybook/addon-knobs';
 import { storiesOf } from '@storybook/react';
 
 import { MessageBody, Props } from './MessageBody';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
+
 const i18n = setupI18n('en', enMessages);
 
 const story = storiesOf('Components/Conversation/MessageBody', module);

ts/components/conversation/MessageBody.tsx

@@ -94,7 +94,7 @@ export class MessageBody extends React.Component<Props> {
     );
   }
 
-  public render() {
+  public render(): JSX.Element {
     const {
       bodyRanges,
       text,

ts/components/conversation/MessageDetail.stories.tsx

@@ -6,11 +6,9 @@ import { storiesOf } from '@storybook/react';
 
 import { Props as MessageProps } from './Message';
 import { MessageDetail, Props } from './MessageDetail';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
+
 const i18n = setupI18n('en', enMessages);
 
 const story = storiesOf('Components/Conversation/MessageDetail', module);
@@ -147,6 +145,7 @@ story.add('Not Delivered', () => {
       text: 'A message to Max',
     },
   });
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   props.receivedAt = undefined as any;
 
   return <MessageDetail {...props} />;

ts/components/conversation/MessageDetail.tsx

@@ -37,10 +37,14 @@ export interface Props {
   i18n: LocalizerType;
 }
 
+const _keyForError = (error: Error): string => {
+  return `${error.name}-${error.message}`;
+};
+
 export class MessageDetail extends React.Component<Props> {
   private readonly focusRef = React.createRef<HTMLDivElement>();
 
-  public componentDidMount() {
+  public componentDidMount(): void {
     // When this component is created, it's initially not part of the DOM, and then it's
     //   added off-screen and animated in. This ensures that the focus takes.
     setTimeout(() => {
@@ -50,7 +54,7 @@ export class MessageDetail extends React.Component<Props> {
     });
   }
 
-  public renderAvatar(contact: Contact) {
+  public renderAvatar(contact: Contact): JSX.Element {
     const { i18n } = this.props;
     const {
       avatarPath,
@@ -76,12 +80,13 @@ export class MessageDetail extends React.Component<Props> {
     );
   }
 
-  public renderDeleteButton() {
+  public renderDeleteButton(): JSX.Element {
     const { i18n, message } = this.props;
 
     return (
       <div className="module-message-detail__delete-button-container">
         <button
+          type="button"
           onClick={() => {
             message.deleteMessage(message.id);
           }}
@@ -93,19 +98,21 @@ export class MessageDetail extends React.Component<Props> {
     );
   }
 
-  public renderContact(contact: Contact) {
+  public renderContact(contact: Contact): JSX.Element {
     const { i18n } = this.props;
     const errors = contact.errors || [];
 
     const errorComponent = contact.isOutgoingKeyError ? (
       <div className="module-message-detail__contact__error-buttons">
         <button
+          type="button"
           className="module-message-detail__contact__show-safety-number"
           onClick={contact.onShowSafetyNumber}
         >
           {i18n('showSafetyNumber')}
         </button>
         <button
+          type="button"
           className="module-message-detail__contact__send-anyway"
           onClick={contact.onSendAnyway}
         >
@@ -138,8 +145,11 @@ export class MessageDetail extends React.Component<Props> {
               i18n={i18n}
             />
           </div>
-          {errors.map((error, index) => (
+          {errors.map(error => (
-            <div key={index} className="module-message-detail__contact__error">
+            <div
+              key={_keyForError(error)}
+              className="module-message-detail__contact__error"
+            >
               {error.message}
             </div>
           ))}
@@ -151,7 +161,7 @@ export class MessageDetail extends React.Component<Props> {
     );
   }
 
-  public renderContacts() {
+  public renderContacts(): JSX.Element | null {
     const { contacts } = this.props;
 
     if (!contacts || !contacts.length) {
@@ -165,18 +175,19 @@ export class MessageDetail extends React.Component<Props> {
     );
   }
 
-  public render() {
+  public render(): JSX.Element {
     const { errors, message, receivedAt, sentAt, i18n } = this.props;
 
     return (
+      // eslint-disable-next-line jsx-a11y/no-noninteractive-tabindex
       <div className="module-message-detail" tabIndex={0} ref={this.focusRef}>
         <div className="module-message-detail__message-container">
           <Message i18n={i18n} {...message} />
         </div>
         <table className="module-message-detail__info">
           <tbody>
-            {(errors || []).map((error, index) => (
+            {(errors || []).map(error => (
-              <tr key={index}>
+              <tr key={_keyForError(error)}>
                 <td className="module-message-detail__label">
                   {i18n('error')}
                 </td>

ts/components/conversation/MessageRequestActions.stories.tsx

@@ -2,14 +2,12 @@ import * as React from 'react';
 import { storiesOf } from '@storybook/react';
 import { text } from '@storybook/addon-knobs';
 import { action } from '@storybook/addon-actions';
+
 import {
   MessageRequestActions,
   Props as MessageRequestActionsProps,
 } from './MessageRequestActions';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
 
 const i18n = setupI18n('en', enMessages);
@@ -42,7 +40,7 @@ storiesOf('Components/Conversation/MessageRequestActions', module)
   .add('Direct (Blocked)', () => {
     return (
       <div style={{ width: '480px' }}>
-        <MessageRequestActions {...getBaseProps()} isBlocked={true} />
+        <MessageRequestActions {...getBaseProps()} isBlocked />
       </div>
     );
   })
@@ -56,7 +54,7 @@ storiesOf('Components/Conversation/MessageRequestActions', module)
   .add('Group (Blocked)', () => {
     return (
       <div style={{ width: '480px' }}>
-        <MessageRequestActions {...getBaseProps(true)} isBlocked={true} />
+        <MessageRequestActions {...getBaseProps(true)} isBlocked />
       </div>
     );
   });

ts/components/conversation/MessageRequestActions.tsx

@@ -19,7 +19,6 @@ export type Props = {
     'i18n' | 'state' | 'onChangeState'
   >;
 
-// tslint:disable-next-line max-func-body-length
 export const MessageRequestActions = ({
   conversationType,
   firstName,
@@ -34,7 +33,7 @@ export const MessageRequestActions = ({
   phoneNumber,
   profileName,
   title,
-}: Props) => {
+}: Props): JSX.Element => {
   const [mrState, setMrState] = React.useState(MessageRequestState.default);
 
   return (
@@ -80,6 +79,7 @@ export const MessageRequestActions = ({
         </p>
         <div className="module-message-request-actions__buttons">
           <button
+            type="button"
             onClick={() => {
               setMrState(MessageRequestState.deleting);
             }}
@@ -93,6 +93,7 @@ export const MessageRequestActions = ({
           </button>
           {isBlocked ? (
             <button
+              type="button"
               onClick={() => {
                 setMrState(MessageRequestState.unblocking);
               }}
@@ -106,6 +107,7 @@ export const MessageRequestActions = ({
             </button>
           ) : (
             <button
+              type="button"
               onClick={() => {
                 setMrState(MessageRequestState.blocking);
               }}
@@ -120,6 +122,7 @@ export const MessageRequestActions = ({
           )}
           {!isBlocked ? (
             <button
+              type="button"
               onClick={onAccept}
               tabIndex={0}
               className={classNames(

ts/components/conversation/MessageRequestActionsConfirmation.tsx

@@ -23,7 +23,6 @@ export type Props = {
   onChangeState(state: MessageRequestState): unknown;
 } & Omit<ContactNameProps, 'module' | 'i18n'>;
 
-// tslint:disable-next-line: max-func-body-length
 export const MessageRequestActionsConfirmation = ({
   conversationType,
   i18n,
@@ -37,10 +36,9 @@ export const MessageRequestActionsConfirmation = ({
   profileName,
   state,
   title,
-}: Props) => {
+}: Props): JSX.Element | null => {
   if (state === MessageRequestState.blocking) {
     return (
-      // tslint:disable-next-line: use-simple-attributes
       <ConfirmationModal
         i18n={i18n}
         onClose={() => {
@@ -82,7 +80,6 @@ export const MessageRequestActionsConfirmation = ({
 
   if (state === MessageRequestState.unblocking) {
     return (
-      // tslint:disable-next-line: use-simple-attributes
       <ConfirmationModal
         i18n={i18n}
         onClose={() => {
@@ -91,7 +88,7 @@ export const MessageRequestActionsConfirmation = ({
         title={
           <Intl
             i18n={i18n}
-            id={'MessageRequests--unblock-confirm-title'}
+            id="MessageRequests--unblock-confirm-title"
             components={[
               <ContactName
                 key="name"
@@ -119,7 +116,6 @@ export const MessageRequestActionsConfirmation = ({
 
   if (state === MessageRequestState.deleting) {
     return (
-      // tslint:disable-next-line: use-simple-attributes
       <ConfirmationModal
         i18n={i18n}
         onClose={() => {

ts/components/conversation/ProfileChangeNotification.stories.tsx

@@ -2,11 +2,8 @@ import * as React from 'react';
 
 import { storiesOf } from '@storybook/react';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
+import enMessages from '../../../_locales/en/messages.json';
-import enMessages from '../../../\_locales/en/messages.json';
-
 import { ProfileChangeNotification } from './ProfileChangeNotification';
 
 const i18n = setupI18n('en', enMessages);

ts/components/conversation/Quote.stories.tsx

@@ -9,11 +9,9 @@ import { pngUrl } from '../../storybook/Fixtures';
 import { Message, Props as MessagesProps } from './Message';
 import { AUDIO_MP3, IMAGE_PNG, MIMEType, VIDEO_MP4 } from '../../types/MIME';
 import { Props, Quote } from './Quote';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
+
 const i18n = setupI18n('en', enMessages);
 
 const story = storiesOf('Components/Conversation/Quote', module);
@@ -63,7 +61,7 @@ const renderInMessage = ({
 }: Props) => {
   const messageProps = {
     ...defaultMessageProps,
-    authorColor: authorColor,
+    authorColor,
     quote: {
       attachment,
       authorId: 'an-author',
@@ -186,6 +184,7 @@ story.add('Image Only', () => {
       },
     },
   });
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   props.text = undefined as any;
 
   return <Quote {...props} />;
@@ -230,6 +229,7 @@ story.add('Video Only', () => {
       },
     },
   });
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   props.text = undefined as any;
 
   return <Quote {...props} />;
@@ -271,6 +271,7 @@ story.add('Audio Only', () => {
       isVoiceMessage: false,
     },
   });
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   props.text = undefined as any;
 
   return <Quote {...props} />;
@@ -296,6 +297,7 @@ story.add('Voice Message Only', () => {
       isVoiceMessage: true,
     },
   });
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   props.text = undefined as any;
 
   return <Quote {...props} />;
@@ -321,6 +323,7 @@ story.add('Other File Only', () => {
       isVoiceMessage: false,
     },
   });
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   props.text = undefined as any;
 
   return <Quote {...props} />;
@@ -355,6 +358,7 @@ story.add('Message Not Found', () => {
 
 story.add('Missing Text & Attachment', () => {
   const props = createProps();
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   props.text = undefined as any;
 
   return <Quote {...props} />;

ts/components/conversation/Quote.tsx

@@ -1,10 +1,8 @@
-// tslint:disable:react-this-binding-issue
-
 import React from 'react';
 import classNames from 'classnames';
 
-import * as MIME from '../../../ts/types/MIME';
+import * as MIME from '../../types/MIME';
-import * as GoogleChrome from '../../../ts/util/GoogleChrome';
+import * as GoogleChrome from '../../util/GoogleChrome';
 
 import { MessageBody } from './MessageBody';
 import { BodyRangesType, LocalizerType } from '../../types/Util';
@@ -65,7 +63,7 @@ function getObjectUrl(thumbnail: Attachment | undefined): string | undefined {
     return thumbnail.objectUrl;
   }
 
-  return;
+  return undefined;
 }
 
 function getTypeLabel({
@@ -86,19 +84,21 @@ function getTypeLabel({
   if (MIME.isAudio(contentType) && isVoiceMessage) {
     return i18n('voiceMessage');
   }
-  if (MIME.isAudio(contentType)) {
-    return i18n('audio');
-  }
 
-  return;
+  return MIME.isAudio(contentType) ? i18n('audio') : undefined;
 }
 
 export class Quote extends React.Component<Props, State> {
-  public state = {
+  constructor(props: Props) {
+    super(props);
+    this.state = {
       imageBroken: false,
     };
+  }
 
-  public handleKeyDown = (event: React.KeyboardEvent<HTMLButtonElement>) => {
+  public handleKeyDown = (
+    event: React.KeyboardEvent<HTMLButtonElement>
+  ): void => {
     const { onClick } = this.props;
 
     // This is important to ensure that using this quote to navigate to the referenced
@@ -109,7 +109,8 @@ export class Quote extends React.Component<Props, State> {
       onClick();
     }
   };
-  public handleClick = (event: React.MouseEvent<HTMLButtonElement>) => {
+
+  public handleClick = (event: React.MouseEvent<HTMLButtonElement>): void => {
     const { onClick } = this.props;
 
     if (onClick) {
@@ -119,15 +120,20 @@ export class Quote extends React.Component<Props, State> {
     }
   };
 
-  public handleImageError = () => {
+  public handleImageError = (): void => {
-    // tslint:disable-next-line no-console
+    window.console.info(
-    console.log('Message: Image failed to load; failing over to placeholder');
+      'Message: Image failed to load; failing over to placeholder'
+    );
     this.setState({
       imageBroken: true,
     });
   };
 
-  public renderImage(url: string, i18n: LocalizerType, icon?: string) {
+  public renderImage(
+    url: string,
+    i18n: LocalizerType,
+    icon?: string
+  ): JSX.Element {
     const iconElement = icon ? (
       <div className="module-quote__icon-container__inner">
         <div className="module-quote__icon-container__circle-background">
@@ -153,7 +159,8 @@ export class Quote extends React.Component<Props, State> {
     );
   }
 
-  public renderIcon(icon: string) {
+  // eslint-disable-next-line class-methods-use-this
+  public renderIcon(icon: string): JSX.Element {
     return (
       <div className="module-quote__icon-container">
         <div className="module-quote__icon-container__inner">
@@ -170,11 +177,11 @@ export class Quote extends React.Component<Props, State> {
     );
   }
 
-  public renderGenericFile() {
+  public renderGenericFile(): JSX.Element | null {
     const { attachment, isIncoming } = this.props;
 
     if (!attachment) {
-      return;
+      return null;
     }
 
     const { fileName, contentType } = attachment;
@@ -202,7 +209,7 @@ export class Quote extends React.Component<Props, State> {
     );
   }
 
-  public renderIconContainer() {
+  public renderIconContainer(): JSX.Element | null {
     const { attachment, i18n } = this.props;
     const { imageBroken } = this.state;
 
@@ -283,8 +290,8 @@ export class Quote extends React.Component<Props, State> {
     return null;
   }
 
-  public renderClose() {
+  public renderClose(): JSX.Element | null {
-    const { onClose } = this.props;
+    const { i18n, onClose } = this.props;
 
     if (!onClose) {
       return null;
@@ -313,6 +320,7 @@ export class Quote extends React.Component<Props, State> {
           // We can't be a button because the overall quote is a button; can't nest them
           role="button"
           className="module-quote__close-button"
+          aria-label={i18n('close')}
           onKeyDown={keyDownHandler}
           onClick={clickHandler}
         />
@@ -320,7 +328,7 @@ export class Quote extends React.Component<Props, State> {
     );
   }
 
-  public renderAuthor() {
+  public renderAuthor(): JSX.Element {
     const {
       authorProfileName,
       authorPhoneNumber,
@@ -353,7 +361,7 @@ export class Quote extends React.Component<Props, State> {
     );
   }
 
-  public renderReferenceWarning() {
+  public renderReferenceWarning(): JSX.Element | null {
     const { i18n, isIncoming, referencedMessageNotFound } = this.props;
 
     if (!referencedMessageNotFound) {
@@ -389,7 +397,7 @@ export class Quote extends React.Component<Props, State> {
     );
   }
 
-  public render() {
+  public render(): JSX.Element | null {
     const {
       authorColor,
       isIncoming,
@@ -410,6 +418,7 @@ export class Quote extends React.Component<Props, State> {
         )}
       >
         <button
+          type="button"
           onClick={this.handleClick}
           onKeyDown={this.handleKeyDown}
           className={classNames(

ts/components/conversation/ReactionPicker.tsx

@@ -65,6 +65,7 @@ export const ReactionPicker = React.forwardRef<HTMLDivElement, Props>(
 
           return (
             <button
+              type="button"
               key={emoji}
               ref={maybeFocusRef}
               tabIndex={0}
@@ -87,6 +88,7 @@ export const ReactionPicker = React.forwardRef<HTMLDivElement, Props>(
           );
         })}
         <button
+          type="button"
           className={classNames(
             'module-reaction-picker__emoji-btn',
             otherSelected

ts/components/conversation/ReactionViewer.stories.tsx

@@ -4,11 +4,9 @@ import { action } from '@storybook/addon-actions';
 import { storiesOf } from '@storybook/react';
 
 import { Props, ReactionViewer } from './ReactionViewer';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
+
 const i18n = setupI18n('en', enMessages);
 
 const story = storiesOf('Components/Conversation/ReactionViewer', module);

ts/components/conversation/ReactionViewer.tsx

@@ -35,7 +35,6 @@ export type Props = OwnProps &
 const emojisOrder = ['❤️', '👍', '👎', '😂', '😮', '😢', '😡'];
 
 export const ReactionViewer = React.forwardRef<HTMLDivElement, Props>(
-  // tslint:disable-next-line max-func-body-length
   ({ i18n, reactions, onClose, pickedReaction, ...rest }, ref) => {
     const grouped = mapValues(groupBy(reactions, 'emoji'), res =>
       orderBy(res, ['timestamp'], ['desc'])
@@ -112,6 +111,7 @@ export const ReactionViewer = React.forwardRef<HTMLDivElement, Props>(
 
               return (
                 <button
+                  type="button"
                   key={cat}
                   ref={maybeFocusRef}
                   className={classNames(

ts/components/conversation/ResetSessionNotification.stories.tsx

@@ -3,11 +3,9 @@ import * as React from 'react';
 import { storiesOf } from '@storybook/react';
 
 import { ResetSessionNotification } from './ResetSessionNotification';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
+
 const i18n = setupI18n('en', enMessages);
 
 const story = storiesOf(

ts/components/conversation/ResetSessionNotification.tsx

@@ -6,14 +6,8 @@ export interface Props {
   i18n: LocalizerType;
 }
 
-export class ResetSessionNotification extends React.Component<Props> {
+export const ResetSessionNotification = ({ i18n }: Props): JSX.Element => (
-  public render() {
-    const { i18n } = this.props;
-
-    return (
   <div className="module-reset-session-notification">
     {i18n('sessionEnded')}
   </div>
-    );
+);
-  }
-}

ts/components/conversation/SafetyNumberNotification.stories.tsx

@@ -3,12 +3,8 @@ import { storiesOf } from '@storybook/react';
 import { action } from '@storybook/addon-actions';
 import { boolean, text } from '@storybook/addon-knobs';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
-
 import {
   ContactType,
   Props,

ts/components/conversation/SafetyNumberNotification.tsx

@@ -27,9 +27,12 @@ export type PropsActions = {
 
 export type Props = PropsData & PropsHousekeeping & PropsActions;
 
-export class SafetyNumberNotification extends React.Component<Props> {
+export const SafetyNumberNotification = ({
-  public render() {
+  contact,
-    const { contact, isGroup, i18n, showIdentity } = this.props;
+  isGroup,
+  i18n,
+  showIdentity,
+}: Props): JSX.Element => {
   const changeKey = isGroup
     ? 'safetyNumberChangedGroup'
     : 'safetyNumberChanged';
@@ -59,6 +62,7 @@ export class SafetyNumberNotification extends React.Component<Props> {
         />
       </div>
       <button
+        type="button"
         onClick={() => {
           showIdentity(contact.id);
         }}
@@ -68,5 +72,4 @@ export class SafetyNumberNotification extends React.Component<Props> {
       </button>
     </div>
   );
-  }
+};
-}

ts/components/conversation/ScrollDownButton.stories.tsx

@@ -3,12 +3,8 @@ import { storiesOf } from '@storybook/react';
 import { action } from '@storybook/addon-actions';
 import { boolean } from '@storybook/addon-knobs';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
-
 import { Props, ScrollDownButton } from './ScrollDownButton';
 
 const i18n = setupI18n('en', enMessages);

ts/components/conversation/ScrollDownButton.tsx

@@ -12,16 +12,18 @@ export type Props = {
   i18n: LocalizerType;
 };
 
-export class ScrollDownButton extends React.Component<Props> {
+export const ScrollDownButton = ({
-  public render() {
+  conversationId,
-    const { conversationId, withNewMessages, i18n, scrollDown } = this.props;
+  withNewMessages,
-    const altText = withNewMessages
+  i18n,
-      ? i18n('messagesBelow')
+  scrollDown,
-      : i18n('scrollDown');
+}: Props): JSX.Element => {
+  const altText = withNewMessages ? i18n('messagesBelow') : i18n('scrollDown');
 
   return (
     <div className="module-scroll-down">
       <button
+        type="button"
         className={classNames(
           'module-scroll-down__button',
           withNewMessages ? 'module-scroll-down__button--new-messages' : null
@@ -35,5 +37,4 @@ export class ScrollDownButton extends React.Component<Props> {
       </button>
     </div>
   );
-  }
+};
-}

ts/components/conversation/StagedGenericAttachment.stories.tsx

@@ -5,13 +5,8 @@ import { action } from '@storybook/addon-actions';
 
 import { AttachmentType } from '../../types/Attachment';
 import { MIMEType } from '../../types/MIME';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
-
 import { Props, StagedGenericAttachment } from './StagedGenericAttachment';
 
 const i18n = setupI18n('en', enMessages);

ts/components/conversation/StagedGenericAttachment.tsx

@@ -9,16 +9,20 @@ export interface Props {
   i18n: LocalizerType;
 }
 
-export class StagedGenericAttachment extends React.Component<Props> {
+export const StagedGenericAttachment = ({
-  public render() {
+  attachment,
-    const { attachment, onClose } = this.props;
+  i18n,
+  onClose,
+}: Props): JSX.Element => {
   const { fileName, contentType } = attachment;
   const extension = getExtensionForDisplay({ contentType, fileName });
 
   return (
     <div className="module-staged-generic-attachment">
       <button
+        type="button"
         className="module-staged-generic-attachment__close-button"
+        aria-label={i18n('close')}
         onClick={() => {
           if (onClose) {
             onClose(attachment);
@@ -37,5 +41,4 @@ export class StagedGenericAttachment extends React.Component<Props> {
       </div>
     </div>
   );
-  }
+};
-}

ts/components/conversation/StagedLinkPreview.stories.tsx

@@ -5,19 +5,15 @@ import { action } from '@storybook/addon-actions';
 
 import { AttachmentType } from '../../types/Attachment';
 import { MIMEType } from '../../types/MIME';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
-
 import { Props, StagedLinkPreview } from './StagedLinkPreview';
 
 const i18n = setupI18n('en', enMessages);
 
 const story = storiesOf('Components/Conversation/StagedLinkPreview', module);
 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
 story.addDecorator((withKnobs as any)({ escapeHTML: false }));
 
 const createAttachment = (

ts/components/conversation/StagedLinkPreview.tsx

@@ -16,10 +16,14 @@ export interface Props {
   onClose?: () => void;
 }
 
-export class StagedLinkPreview extends React.Component<Props> {
+export const StagedLinkPreview = ({
-  public render() {
+  isLoaded,
-    const { isLoaded, onClose, i18n, title, image, domain } = this.props;
+  onClose,
-
+  i18n,
+  title,
+  image,
+  domain,
+}: Props): JSX.Element => {
   const isImage = image && isImageAttachment(image);
 
   return (
@@ -38,7 +42,7 @@ export class StagedLinkPreview extends React.Component<Props> {
         <div className="module-staged-link-preview__icon-container">
           <Image
             alt={i18n('stagedPreviewThumbnail', [domain])}
-              softCorners={true}
+            softCorners
             height={72}
             width={72}
             url={image.url}
@@ -54,10 +58,11 @@ export class StagedLinkPreview extends React.Component<Props> {
         </div>
       ) : null}
       <button
+        type="button"
         className="module-staged-link-preview__close-button"
         onClick={onClose}
+        aria-label={i18n('close')}
       />
     </div>
   );
-  }
+};
-}

ts/components/conversation/StagedPlaceholderAttachment.stories.tsx

@@ -2,12 +2,8 @@ import * as React from 'react';
 import { storiesOf } from '@storybook/react';
 import { action } from '@storybook/addon-actions';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
-
 import { StagedPlaceholderAttachment } from './StagedPlaceholderAttachment';
 
 const i18n = setupI18n('en', enMessages);

ts/components/conversation/StagedPlaceholderAttachment.tsx

@@ -6,18 +6,16 @@ interface Props {
   i18n: LocalizerType;
 }
 
-export class StagedPlaceholderAttachment extends React.Component<Props> {
+export const StagedPlaceholderAttachment = ({
-  public render() {
+  i18n,
-    const { i18n, onClick } = this.props;
+  onClick,
-
+}: Props): JSX.Element => (
-    return (
   <button
+    type="button"
     className="module-staged-placeholder-attachment"
     onClick={onClick}
     title={i18n('add-image-attachment')}
   >
     <div className="module-staged-placeholder-attachment__plus-icon" />
   </button>
-    );
+);
-  }
-}

ts/components/conversation/Timeline.stories.tsx

@@ -3,12 +3,8 @@ import { storiesOf } from '@storybook/react';
 import { boolean, number } from '@storybook/addon-knobs';
 import { action } from '@storybook/addon-actions';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
-
 import { Props, Timeline } from './Timeline';
 import { TimelineItem, TimelineItemType } from './TimelineItem';
 import { LastSeenIndicator } from './LastSeenIndicator';
@@ -19,7 +15,7 @@ const i18n = setupI18n('en', enMessages);
 
 const story = storiesOf('Components/Conversation/Timeline', module);
 
-// tslint:disable-next-line
+// eslint-disable-next-line
 const noop = () => {};
 
 Object.assign(window, {
@@ -207,6 +203,7 @@ const items: Record<string, TimelineItemType> = {
     type: 'linkNotification',
     data: null,
   },
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
 } as any;
 
 const actions = () => ({

ts/components/conversation/Timeline.tsx

@@ -1,10 +1,11 @@
 import { debounce, get, isNumber } from 'lodash';
-import React from 'react';
+import React, { CSSProperties } from 'react';
 import {
   AutoSizer,
   CellMeasurer,
   CellMeasurerCache,
   List,
+  Grid,
 } from 'react-virtualized';
 
 import { ScrollDownButton } from './ScrollDownButton';
@@ -39,7 +40,7 @@ export type PropsDataType = {
 type PropsHousekeepingType = {
   id: string;
   unreadCount?: number;
-  typingContact?: Object;
+  typingContact?: unknown;
   selectedMessageId?: string;
 
   i18n: LocalizerType;
@@ -47,7 +48,7 @@ type PropsHousekeepingType = {
   renderItem: (
     id: string,
     conversationId: string,
-    actions: Object
+    actions: Record<string, unknown>
   ) => JSX.Element;
   renderLastSeenIndicator: (id: string) => JSX.Element;
   renderHeroRow: (
@@ -86,8 +87,8 @@ type RowRendererParamsType = {
   isScrolling: boolean;
   isVisible: boolean;
   key: string;
-  parent: Object;
+  parent: Record<string, unknown>;
-  style: Object;
+  style: CSSProperties;
 };
 type OnScrollParamsType = {
   scrollTop: number;
@@ -134,13 +135,20 @@ export class Timeline extends React.PureComponent<Props, State> {
     defaultHeight: 64,
     fixedWidth: true,
   });
+
   public mostRecentWidth = 0;
+
   public mostRecentHeight = 0;
+
   public offsetFromBottom: number | undefined = 0;
+
   public resizeFlag = false;
-  public listRef = React.createRef<any>();
+
+  public listRef = React.createRef<List>();
+
   public visibleRows: VisibleRowsType | undefined;
-  public loadCountdownTimeout: any;
+
+  public loadCountdownTimeout: NodeJS.Timeout | null = null;
 
   constructor(props: Props) {
     super(props);
@@ -176,9 +184,9 @@ export class Timeline extends React.PureComponent<Props, State> {
     return state;
   }
 
-  public getList = () => {
+  public getList = (): List | null => {
     if (!this.listRef) {
-      return;
+      return null;
     }
 
     const { current } = this.listRef;
@@ -186,25 +194,30 @@ export class Timeline extends React.PureComponent<Props, State> {
     return current;
   };
 
-  public getGrid = () => {
+  public getGrid = (): Grid | undefined => {
     const list = this.getList();
     if (!list) {
       return;
     }
 
+    // eslint-disable-next-line consistent-return
     return list.Grid;
   };
 
-  public getScrollContainer = () => {
+  public getScrollContainer = (): HTMLDivElement | undefined => {
-    const grid = this.getGrid();
+    // We're using an internal variable (_scrollingContainer)) here,
+    // so cannot rely on the public type.
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    const grid: any = this.getGrid();
     if (!grid) {
       return;
     }
 
+    // eslint-disable-next-line consistent-return
     return grid._scrollingContainer as HTMLDivElement;
   };
 
-  public scrollToRow = (row: number) => {
+  public scrollToRow = (row: number): void => {
     const list = this.getList();
     if (!list) {
       return;
@@ -213,7 +226,7 @@ export class Timeline extends React.PureComponent<Props, State> {
     list.scrollToRow(row);
   };
 
-  public recomputeRowHeights = (row?: number) => {
+  public recomputeRowHeights = (row?: number): void => {
     const list = this.getList();
     if (!list) {
       return;
@@ -222,7 +235,7 @@ export class Timeline extends React.PureComponent<Props, State> {
     list.recomputeRowHeights(row);
   };
 
-  public onHeightOnlyChange = () => {
+  public onHeightOnlyChange = (): void => {
     const grid = this.getGrid();
     const scrollContainer = this.getScrollContainer();
     if (!grid || !scrollContainer) {
@@ -240,13 +253,18 @@ export class Timeline extends React.PureComponent<Props, State> {
     );
     const delta = newOffsetFromBottom - this.offsetFromBottom;
 
-    grid.scrollToPosition({ scrollTop: scrollContainer.scrollTop + delta });
+    // TODO: DESKTOP-687
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    (grid as any).scrollToPosition({
+      scrollTop: scrollContainer.scrollTop + delta,
+    });
   };
 
-  public resize = (row?: number) => {
+  public resize = (row?: number): void => {
     this.offsetFromBottom = undefined;
     this.resizeFlag = false;
     if (isNumber(row) && row > 0) {
+      // eslint-disable-next-line @typescript-eslint/ban-ts-comment
       // @ts-ignore
       this.cellSizeCache.clearPlus(row, 0);
     } else {
@@ -256,11 +274,11 @@ export class Timeline extends React.PureComponent<Props, State> {
     this.recomputeRowHeights(row || 0);
   };
 
-  public resizeHeroRow = () => {
+  public resizeHeroRow = (): void => {
     this.resize(0);
   };
 
-  public onScroll = (data: OnScrollParamsType) => {
+  public onScroll = (data: OnScrollParamsType): void => {
     // Ignore scroll events generated as react-virtualized recursively scrolls and
     //   re-measures to get us where we want to go.
     if (
@@ -284,7 +302,6 @@ export class Timeline extends React.PureComponent<Props, State> {
     this.updateWithVisibleRows();
   };
 
-  // tslint:disable-next-line member-ordering
   public updateScrollMetrics = debounce(
     (data: OnScrollParamsType) => {
       const { clientHeight, clientWidth, scrollHeight, scrollTop } = data;
@@ -337,10 +354,14 @@ export class Timeline extends React.PureComponent<Props, State> {
         );
       }
 
+      // Variable collision
+      // eslint-disable-next-line react/destructuring-assignment
       if (loadCountdownStart !== this.props.loadCountdownStart) {
         setLoadCountdownStart(id, loadCountdownStart);
       }
 
+      // Variable collision
+      // eslint-disable-next-line react/destructuring-assignment
       if (isNearBottom !== this.props.isNearBottom) {
         setIsNearBottom(id, isNearBottom);
       }
@@ -356,7 +377,7 @@ export class Timeline extends React.PureComponent<Props, State> {
     { maxWait: 50 }
   );
 
-  public updateVisibleRows = () => {
+  public updateVisibleRows = (): void => {
     let newest;
     let oldest;
 
@@ -384,6 +405,7 @@ export class Timeline extends React.PureComponent<Props, State> {
       const { id, offsetTop, offsetHeight } = child;
 
       if (!id) {
+        // eslint-disable-next-line no-continue
         continue;
       }
 
@@ -403,6 +425,7 @@ export class Timeline extends React.PureComponent<Props, State> {
       const { offsetTop, id } = child;
 
       if (!id) {
+        // eslint-disable-next-line no-continue
         continue;
       }
 
@@ -417,7 +440,6 @@ export class Timeline extends React.PureComponent<Props, State> {
     this.visibleRows = { newest, oldest };
   };
 
-  // tslint:disable-next-line member-ordering cyclomatic-complexity
   public updateWithVisibleRows = debounce(
     () => {
       const {
@@ -479,7 +501,7 @@ export class Timeline extends React.PureComponent<Props, State> {
     { maxWait: 500 }
   );
 
-  public loadOlderMessages = () => {
+  public loadOlderMessages = (): void => {
     const {
       haveOldest,
       isLoadingMessages,
@@ -505,7 +527,7 @@ export class Timeline extends React.PureComponent<Props, State> {
     key,
     parent,
     style,
-  }: RowRendererParamsType) => {
+  }: RowRendererParamsType): JSX.Element => {
     const {
       id,
       haveOldest,
@@ -591,7 +613,7 @@ export class Timeline extends React.PureComponent<Props, State> {
     );
   };
 
-  public fromItemIndexToRow(index: number) {
+  public fromItemIndexToRow(index: number): number {
     const { oldestUnreadIndex } = this.props;
 
     // We will always render either the hero row or the loading row
@@ -604,7 +626,7 @@ export class Timeline extends React.PureComponent<Props, State> {
     return index + addition;
   }
 
-  public getRowCount() {
+  public getRowCount(): number {
     const { oldestUnreadIndex, typingContact } = this.props;
     const { items } = this.props;
     const itemsCount = items && items.length ? items.length : 0;
@@ -639,19 +661,21 @@ export class Timeline extends React.PureComponent<Props, State> {
       return;
     }
 
+    // eslint-disable-next-line consistent-return
     return index;
   }
 
-  public getLastSeenIndicatorRow(props?: Props) {
+  public getLastSeenIndicatorRow(props?: Props): number | undefined {
     const { oldestUnreadIndex } = props || this.props;
     if (!isNumber(oldestUnreadIndex)) {
       return;
     }
 
+    // eslint-disable-next-line consistent-return
     return this.fromItemIndexToRow(oldestUnreadIndex) - 1;
   }
 
-  public getTypingBubbleRow() {
+  public getTypingBubbleRow(): number | undefined {
     const { items } = this.props;
     if (!items || items.length < 0) {
       return;
@@ -659,10 +683,11 @@ export class Timeline extends React.PureComponent<Props, State> {
 
     const last = items.length - 1;
 
+    // eslint-disable-next-line consistent-return
     return this.fromItemIndexToRow(last) + 1;
   }
 
-  public onScrollToMessage = (messageId: string) => {
+  public onScrollToMessage = (messageId: string): void => {
     const { isLoadingMessages, items, loadAndScroll } = this.props;
     const index = items.findIndex(item => item === messageId);
 
@@ -678,7 +703,7 @@ export class Timeline extends React.PureComponent<Props, State> {
     }
   };
 
-  public scrollToBottom = (setFocus?: boolean) => {
+  public scrollToBottom = (setFocus?: boolean): void => {
     const { selectMessage, id, items } = this.props;
 
     if (setFocus && items && items.length > 0) {
@@ -694,11 +719,11 @@ export class Timeline extends React.PureComponent<Props, State> {
     });
   };
 
-  public onClickScrollDownButton = () => {
+  public onClickScrollDownButton = (): void => {
     this.scrollDown(false);
   };
 
-  public scrollDown = (setFocus?: boolean) => {
+  public scrollDown = (setFocus?: boolean): void => {
     const {
       haveNewest,
       id,
@@ -746,19 +771,20 @@ export class Timeline extends React.PureComponent<Props, State> {
     }
   };
 
-  public componentDidMount() {
+  public componentDidMount(): void {
     this.updateWithVisibleRows();
+    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
     // @ts-ignore
     window.registerForActive(this.updateWithVisibleRows);
   }
 
-  public componentWillUnmount() {
+  public componentWillUnmount(): void {
+    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
     // @ts-ignore
     window.unregisterForActive(this.updateWithVisibleRows);
   }
 
-  // tslint:disable-next-line cyclomatic-complexity max-func-body-length
+  public componentDidUpdate(prevProps: Props): void {
-  public componentDidUpdate(prevProps: Props) {
     const {
       id,
       clearChangedMessages,
@@ -787,6 +813,8 @@ export class Timeline extends React.PureComponent<Props, State> {
       }
 
       const oneTimeScrollRow = this.getLastSeenIndicatorRow();
+      // TODO: DESKTOP-688
+      // eslint-disable-next-line react/no-did-update-set-state
       this.setState({
         oneTimeScrollRow,
         atBottom: true,
@@ -804,7 +832,9 @@ export class Timeline extends React.PureComponent<Props, State> {
       prevProps.items.length > 0 &&
       items !== prevProps.items
     ) {
-      if (this.state.atTop) {
+      const { atTop } = this.state;
+
+      if (atTop) {
         const oldFirstIndex = 0;
         const oldFirstId = prevProps.items[oldFirstIndex];
 
@@ -820,6 +850,8 @@ export class Timeline extends React.PureComponent<Props, State> {
         if (delta > 0) {
           // We're loading more new messages at the top; we want to stay at the top
           this.resize();
+          // TODO: DESKTOP-688
+          // eslint-disable-next-line react/no-did-update-set-state
           this.setState({ oneTimeScrollRow: newRow });
 
           return;
@@ -900,7 +932,7 @@ export class Timeline extends React.PureComponent<Props, State> {
     this.updateWithVisibleRows();
   }
 
-  public getScrollTarget = () => {
+  public getScrollTarget = (): number | undefined => {
     const { oneTimeScrollRow, atBottom, propScrollToIndex } = this.state;
 
     const rowCount = this.getRowCount();
@@ -920,7 +952,7 @@ export class Timeline extends React.PureComponent<Props, State> {
     return scrollToBottom;
   };
 
-  public handleBlur = (event: React.FocusEvent) => {
+  public handleBlur = (event: React.FocusEvent): void => {
     const { clearSelectedMessage } = this.props;
 
     const { currentTarget } = event;
@@ -944,7 +976,7 @@ export class Timeline extends React.PureComponent<Props, State> {
     }, 0);
   };
 
-  public handleKeyDown = (event: React.KeyboardEvent<HTMLDivElement>) => {
+  public handleKeyDown = (event: React.KeyboardEvent<HTMLDivElement>): void => {
     const { selectMessage, selectedMessageId, items, id } = this.props;
     const commandKey = get(window, 'platform') === 'darwin' && event.metaKey;
     const controlKey = get(window, 'platform') !== 'darwin' && event.ctrlKey;
@@ -1015,12 +1047,10 @@ export class Timeline extends React.PureComponent<Props, State> {
 
       event.preventDefault();
       event.stopPropagation();
-
-      return;
     }
   };
 
-  public render() {
+  public render(): JSX.Element | null {
     const { i18n, id, items } = this.props;
     const {
       shouldShowScrollDownButton,
@@ -1037,7 +1067,7 @@ export class Timeline extends React.PureComponent<Props, State> {
     return (
       <div
         className="module-timeline"
-        role="group"
+        role="presentation"
         tabIndex={-1}
         onBlur={this.handleBlur}
         onKeyDown={this.handleKeyDown}
@@ -1062,6 +1092,7 @@ export class Timeline extends React.PureComponent<Props, State> {
               <List
                 deferredMeasurementCache={this.cellSizeCache}
                 height={height}
+                // eslint-disable-next-line @typescript-eslint/no-explicit-any
                 onScroll={this.onScroll as any}
                 overscanRowCount={10}
                 ref={this.listRef}

ts/components/conversation/TimelineItem.stories.tsx

@@ -2,13 +2,10 @@ import * as React from 'react';
 
 import { storiesOf } from '@storybook/react';
 import { action } from '@storybook/addon-actions';
+
 import { EmojiPicker } from '../emoji/EmojiPicker';
-
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
-
 import { PropsType as TimelineItemProps, TimelineItem } from './TimelineItem';
 
 const i18n = setupI18n('en', enMessages);
@@ -80,7 +77,6 @@ storiesOf('Components/Conversation/TimelineItem', module)
 
     return <TimelineItem {...getDefaultProps()} item={item} i18n={i18n} />;
   })
-  // tslint:disable-next-line max-func-body-length
   .add('Notification', () => {
     const items = [
       {
@@ -173,7 +169,7 @@ storiesOf('Components/Conversation/TimelineItem', module)
             acceptedTime: Date.now() - 200,
             wasDeclined: false,
             wasIncoming: false,
-            wasVideoCall: true,
+            wasVideoCall: false,
             endedTime: Date.now(),
           },
         },
@@ -193,8 +189,8 @@ storiesOf('Components/Conversation/TimelineItem', module)
       },
       {
         type: 'callHistory',
-        callHistoryDetails: {
         data: {
+          callHistoryDetails: {
             // declined outgoing audio
             wasDeclined: true,
             wasIncoming: false,
@@ -243,20 +239,21 @@ storiesOf('Components/Conversation/TimelineItem', module)
 
     return (
       <>
-        {items.map(item => (
+        {items.map((item, index) => (
-          <>
+          <React.Fragment key={index}>
             <TimelineItem
               {...getDefaultProps()}
               item={item as TimelineItemProps['item']}
               i18n={i18n}
             />
             <hr />
-          </>
+          </React.Fragment>
         ))}
       </>
     );
   })
   .add('Unknown Type', () => {
+    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
     // @ts-ignore: intentional
     const item = {
       type: 'random',
@@ -268,6 +265,7 @@ storiesOf('Components/Conversation/TimelineItem', module)
     return <TimelineItem {...getDefaultProps()} item={item} i18n={i18n} />;
   })
   .add('Missing Item', () => {
+    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
     // @ts-ignore: intentional
     const item = null as TimelineItemProps['item'];
 

ts/components/conversation/TimelineItem.tsx

@@ -124,7 +124,7 @@ export type PropsType = PropsLocalType &
   Pick<AllMessageProps, 'renderEmojiPicker'>;
 
 export class TimelineItem extends React.PureComponent<PropsType> {
-  public render() {
+  public render(): JSX.Element | null {
     const {
       conversationId,
       id,
@@ -136,8 +136,7 @@ export class TimelineItem extends React.PureComponent<PropsType> {
     } = this.props;
 
     if (!item) {
-      // tslint:disable-next-line:no-console
+      window.log.warn(`TimelineItem: item ${id} provided was falsey`);
-      console.warn(`TimelineItem: item ${id} provided was falsey`);
 
       return null;
     }

ts/components/conversation/TimelineLoadingRow.tsx

@@ -16,18 +16,15 @@ export type Props = {
 const FAKE_DURATION = 1000;
 
 export class TimelineLoadingRow extends React.PureComponent<Props> {
-  public renderContents() {
+  public renderContents(): JSX.Element {
     const { state, duration, expiresAt, onComplete } = this.props;
 
     if (state === 'idle') {
       const fakeExpiresAt = Date.now() - FAKE_DURATION;
 
       return <Countdown duration={FAKE_DURATION} expiresAt={fakeExpiresAt} />;
-    } else if (
+    }
-      state === 'countdown' &&
+    if (state === 'countdown' && isNumber(duration) && isNumber(expiresAt)) {
-      isNumber(duration) &&
-      isNumber(expiresAt)
-    ) {
       return (
         <Countdown
           duration={duration}
@@ -40,7 +37,7 @@ export class TimelineLoadingRow extends React.PureComponent<Props> {
     return <Spinner size="24" svgSize="small" direction="on-background" />;
   }
 
-  public render() {
+  public render(): JSX.Element {
     return (
       <div className="module-timeline-loading-row">{this.renderContents()}</div>
     );

ts/components/conversation/TimerNotification.stories.tsx

@@ -2,12 +2,8 @@ import * as React from 'react';
 import { storiesOf } from '@storybook/react';
 import { boolean, select, text } from '@storybook/addon-knobs';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
-
 import { Props, TimerNotification } from './TimerNotification';
 
 const i18n = setupI18n('en', enMessages);

ts/components/conversation/TimerNotification.tsx

@@ -22,7 +22,7 @@ type PropsHousekeeping = {
 export type Props = PropsData & PropsHousekeeping;
 
 export class TimerNotification extends React.Component<Props> {
-  public renderContents() {
+  public renderContents(): JSX.Element | string | null {
     const {
       i18n,
       name,
@@ -71,13 +71,13 @@ export class TimerNotification extends React.Component<Props> {
           ? i18n('disappearingMessagesDisabledByMember')
           : i18n('timerSetByMember', [timespan]);
       default:
-        console.warn('TimerNotification: unsupported type provided:', type);
+        window.log.warn('TimerNotification: unsupported type provided:', type);
 
         return null;
     }
   }
 
-  public render() {
+  public render(): JSX.Element {
     const { timespan, disabled } = this.props;
 
     return (

ts/components/conversation/Timestamp.stories.tsx

@@ -2,19 +2,15 @@ import * as React from 'react';
 import { storiesOf } from '@storybook/react';
 import { boolean, date, select, text } from '@storybook/addon-knobs';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
-
 import { Props, Timestamp } from './Timestamp';
 
 const i18n = setupI18n('en', enMessages);
 
 const story = storiesOf('Components/Conversation/Timestamp', module);
 
-const now = Date.now;
+const { now } = Date;
 const seconds = (n: number) => n * 1000;
 const minutes = (n: number) => 60 * seconds(n);
 const hours = (n: number) => 60 * minutes(n);
@@ -70,6 +66,7 @@ const createProps = (overrideProps: Partial<Props> = {}): Props => ({
 
 const createTable = (overrideProps: Partial<Props> = {}) => (
   <table cellPadding={5}>
+    <tbody>
       <tr>
         <th>Description</th>
         <th>Timestamp</th>
@@ -85,6 +82,7 @@ const createTable = (overrideProps: Partial<Props> = {}) => (
           </td>
         </tr>
       ))}
+    </tbody>
   </table>
 );
 

ts/components/conversation/Timestamp.tsx

@@ -21,7 +21,7 @@ export interface Props {
 const UPDATE_FREQUENCY = 60 * 1000;
 
 export class Timestamp extends React.Component<Props> {
-  private interval: any;
+  private interval: NodeJS.Timeout | null;
 
   constructor(props: Props) {
     super(props);
@@ -29,22 +29,24 @@ export class Timestamp extends React.Component<Props> {
     this.interval = null;
   }
 
-  public componentDidMount() {
+  public componentDidMount(): void {
     const update = () => {
       this.setState({
+        // Used to trigger renders
+        // eslint-disable-next-line react/no-unused-state
         lastUpdated: Date.now(),
       });
     };
     this.interval = setInterval(update, UPDATE_FREQUENCY);
   }
 
-  public componentWillUnmount() {
+  public componentWillUnmount(): void {
     if (this.interval) {
       clearInterval(this.interval);
     }
   }
 
-  public render() {
+  public render(): JSX.Element | null {
     const {
       direction,
       i18n,

ts/components/conversation/TypingAnimation.stories.tsx

@@ -1,12 +1,8 @@
 import * as React from 'react';
 import { storiesOf } from '@storybook/react';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
-
 import { Props, TypingAnimation } from './TypingAnimation';
 
 const i18n = setupI18n('en', enMessages);

ts/components/conversation/TypingAnimation.tsx

@@ -8,11 +8,7 @@ export interface Props {
   color?: string;
 }
 
-export class TypingAnimation extends React.Component<Props> {
+export const TypingAnimation = ({ i18n, color }: Props): JSX.Element => (
-  public render() {
-    const { i18n, color } = this.props;
-
-    return (
   <div className="module-typing-animation" title={i18n('typingAlt')}>
     <div
       className={classNames(
@@ -38,6 +34,4 @@ export class TypingAnimation extends React.Component<Props> {
       )}
     />
   </div>
-    );
+);
-  }
-}

ts/components/conversation/TypingBubble.stories.tsx

@@ -2,12 +2,8 @@ import * as React from 'react';
 import { storiesOf } from '@storybook/react';
 import { select, text } from '@storybook/addon-knobs';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
-
 import { Props, TypingBubble } from './TypingBubble';
 import { Colors } from '../../types/Colors';
 

ts/components/conversation/TypingBubble.tsx

@@ -19,7 +19,7 @@ export interface Props {
 }
 
 export class TypingBubble extends React.PureComponent<Props> {
-  public renderAvatar() {
+  public renderAvatar(): JSX.Element | null {
     const {
       avatarPath,
       color,
@@ -32,7 +32,7 @@ export class TypingBubble extends React.PureComponent<Props> {
     } = this.props;
 
     if (conversationType !== 'group') {
-      return;
+      return null;
     }
 
     return (
@@ -52,7 +52,7 @@ export class TypingBubble extends React.PureComponent<Props> {
     );
   }
 
-  public render() {
+  public render(): JSX.Element {
     const { i18n, color, conversationType } = this.props;
     const isGroup = conversationType === 'group';
 

ts/components/conversation/UnsupportedMessage.stories.tsx

@@ -3,12 +3,8 @@ import { storiesOf } from '@storybook/react';
 import { boolean, text } from '@storybook/addon-knobs';
 import { action } from '@storybook/addon-actions';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
-
 import { ContactType, Props, UnsupportedMessage } from './UnsupportedMessage';
 
 const i18n = setupI18n('en', enMessages);

ts/components/conversation/UnsupportedMessage.tsx

@@ -29,9 +29,12 @@ type PropsHousekeeping = {
 
 export type Props = PropsData & PropsHousekeeping & PropsActions;
 
-export class UnsupportedMessage extends React.Component<Props> {
+export const UnsupportedMessage = ({
-  public render() {
+  canProcessNow,
-    const { canProcessNow, contact, i18n, downloadNewVersion } = this.props;
+  contact,
+  i18n,
+  downloadNewVersion,
+}: Props): JSX.Element => {
   const { isMe } = contact;
 
   const otherStringId = canProcessNow
@@ -47,9 +50,7 @@ export class UnsupportedMessage extends React.Component<Props> {
       <div
         className={classNames(
           'module-unsupported-message__icon',
-            canProcessNow
+          canProcessNow ? 'module-unsupported-message__icon--can-process' : null
-              ? 'module-unsupported-message__icon--can-process'
-              : null
         )}
       />
       <div className="module-unsupported-message__text">
@@ -75,6 +76,7 @@ export class UnsupportedMessage extends React.Component<Props> {
       </div>
       {canProcessNow ? null : (
         <button
+          type="button"
           onClick={() => {
             downloadNewVersion();
           }}
@@ -85,5 +87,4 @@ export class UnsupportedMessage extends React.Component<Props> {
       )}
     </div>
   );
-  }
+};
-}

ts/components/conversation/VerificationNotification.stories.tsx

@@ -1,14 +1,10 @@
 import * as React from 'react';
+import { boolean } from '@storybook/addon-knobs';
 import { storiesOf } from '@storybook/react';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../js/modules/i18n';
-
-// @ts-ignore
 import enMessages from '../../../_locales/en/messages.json';
-
 import { Props, VerificationNotification } from './VerificationNotification';
-import { boolean } from '@storybook/addon-knobs';
 
 const i18n = setupI18n('en', enMessages);
 

ts/components/conversation/VerificationNotification.tsx

@@ -27,7 +27,7 @@ type PropsHousekeeping = {
 export type Props = PropsData & PropsHousekeeping;
 
 export class VerificationNotification extends React.Component<Props> {
-  public getStringId() {
+  public getStringId(): string {
     const { isLocal, type } = this.props;
 
     switch (type) {
@@ -44,7 +44,7 @@ export class VerificationNotification extends React.Component<Props> {
     }
   }
 
-  public renderContents() {
+  public renderContents(): JSX.Element {
     const { contact, i18n } = this.props;
     const id = this.getStringId();
 
@@ -67,7 +67,7 @@ export class VerificationNotification extends React.Component<Props> {
     );
   }
 
-  public render() {
+  public render(): JSX.Element {
     const { type } = this.props;
     const suffix =
       type === 'markVerified' ? 'mark-verified' : 'mark-not-verified';

ts/components/conversation/_contactUtil.tsx

@@ -19,7 +19,7 @@ export function renderAvatar({
   i18n: LocalizerType;
   size: 28 | 52 | 80;
   direction?: 'outgoing' | 'incoming';
-}) {
+}): JSX.Element {
   const { avatar } = contact;
 
   const avatarPath = avatar && avatar.avatar && avatar.avatar.path;
@@ -60,7 +60,7 @@ export function renderName({
   contact: ContactType;
   isIncoming: boolean;
   module: string;
-}) {
+}): JSX.Element {
   return (
     <div
       className={classNames(
@@ -81,7 +81,7 @@ export function renderContactShorthand({
   contact: ContactType;
   isIncoming: boolean;
   module: string;
-}) {
+}): JSX.Element {
   const { number: phoneNumber, email } = contact;
   const firstNumber = phoneNumber && phoneNumber[0] && phoneNumber[0].value;
   const firstEmail = email && email[0] && email[0].value;

ts/components/conversation/media-gallery/AttachmentSection.stories.tsx

@@ -1,13 +1,12 @@
+/* eslint-disable @typescript-eslint/explicit-module-boundary-types */
+
 import * as React from 'react';
 import { storiesOf } from '@storybook/react';
 import { select, text, withKnobs } from '@storybook/addon-knobs';
 import { random, range, sample, sortBy } from 'lodash';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../../_locales/en/messages.json';
-
 import { MIMEType } from '../../../types/MIME';
 import { MediaItemType } from '../../LightboxGallery';
 
@@ -20,6 +19,7 @@ const story = storiesOf(
   module
 );
 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
 story.addDecorator((withKnobs as any)({ escapeHTML: false }));
 
 export const now = Date.now();

ts/components/conversation/media-gallery/AttachmentSection.tsx

@@ -16,7 +16,7 @@ export interface Props {
 }
 
 export class AttachmentSection extends React.Component<Props> {
-  public render() {
+  public render(): JSX.Element {
     const { header } = this.props;
 
     return (

ts/components/conversation/media-gallery/DocumentListItem.stories.tsx

@@ -10,6 +10,7 @@ const story = storiesOf(
   module
 );
 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
 story.addDecorator((withKnobs as any)({ escapeHTML: false }));
 
 story.add('Single', () => (

ts/components/conversation/media-gallery/DocumentListItem.tsx

@@ -2,7 +2,6 @@ import React from 'react';
 import classNames from 'classnames';
 
 import moment from 'moment';
-// tslint:disable-next-line:match-default-export-name
 import formatFileSize from 'filesize';
 
 interface Props {
@@ -21,7 +20,7 @@ export class DocumentListItem extends React.Component<Props> {
     shouldShowSeparator: true,
   };
 
-  public render() {
+  public render(): JSX.Element {
     const { shouldShowSeparator } = this.props;
 
     return (
@@ -39,12 +38,13 @@ export class DocumentListItem extends React.Component<Props> {
   }
 
   private renderContent() {
-    const { fileName, fileSize, timestamp } = this.props;
+    const { fileName, fileSize, onClick, timestamp } = this.props;
 
     return (
       <button
+        type="button"
         className="module-document-list-item__content"
-        onClick={this.props.onClick}
+        onClick={onClick}
       >
         <div className="module-document-list-item__icon" />
         <div className="module-document-list-item__metadata">

ts/components/conversation/media-gallery/EmptyState.stories.tsx

@@ -8,6 +8,7 @@ const story = storiesOf(
   module
 );
 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
 story.addDecorator((withKnobs as any)({ escapeHTML: false }));
 
 story.add('Default', () => {

ts/components/conversation/media-gallery/EmptyState.tsx

@@ -1,16 +1,9 @@
-/**
- * @prettier
- */
 import React from 'react';
 
 interface Props {
   label: string;
 }
 
-export class EmptyState extends React.Component<Props> {
+export const EmptyState = ({ label }: Props): JSX.Element => (
-  public render() {
+  <div className="module-empty-state">{label}</div>
-    const { label } = this.props;
+);
-
-    return <div className="module-empty-state">{label}</div>;
-  }
-}

ts/components/conversation/media-gallery/LoadingIndicator.tsx

@@ -1,6 +1,6 @@
 import React from 'react';
 
-export const LoadingIndicator = () => {
+export const LoadingIndicator = (): JSX.Element => {
   return (
     <div className="loading-widget">
       <div className="container">

ts/components/conversation/media-gallery/MediaGallery.stories.tsx

@@ -2,9 +2,7 @@ import * as React from 'react';
 import { storiesOf } from '@storybook/react';
 import { action } from '@storybook/addon-actions';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../../_locales/en/messages.json';
 
 import {

ts/components/conversation/media-gallery/MediaGallery.tsx

@@ -48,6 +48,8 @@ const Tab = ({
     : undefined;
 
   return (
+    // Has key events handled elsewhere
+    // eslint-disable-next-line jsx-a11y/click-events-have-key-events
     <div
       className={classNames(
         'module-media-gallery__tab',
@@ -64,11 +66,15 @@ const Tab = ({
 
 export class MediaGallery extends React.Component<Props, State> {
   public readonly focusRef: React.RefObject<HTMLDivElement> = React.createRef();
-  public state: State = {
+
+  constructor(props: Props) {
+    super(props);
+    this.state = {
       selectedTab: 'media',
     };
+  }
 
-  public componentDidMount() {
+  public componentDidMount(): void {
     // When this component is created, it's initially not part of the DOM, and then it's
     //   added off-screen and animated in. This ensures that the focus takes.
     setTimeout(() => {
@@ -78,7 +84,7 @@ export class MediaGallery extends React.Component<Props, State> {
     });
   }
 
-  public render() {
+  public render(): JSX.Element {
     const { selectedTab } = this.state;
 
     return (

ts/components/conversation/media-gallery/MediaGridItem.stories.tsx

@@ -3,11 +3,8 @@ import { storiesOf } from '@storybook/react';
 import { text, withKnobs } from '@storybook/addon-knobs';
 import { action } from '@storybook/addon-actions';
 
-// @ts-ignore
 import { setup as setupI18n } from '../../../../js/modules/i18n';
-// @ts-ignore
 import enMessages from '../../../../_locales/en/messages.json';
-
 import { MediaItemType } from '../../LightboxGallery';
 import { AttachmentType } from '../../../types/Attachment';
 import { MIMEType } from '../../../types/MIME';
@@ -22,6 +19,7 @@ const story = storiesOf(
   module
 );
 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
 story.addDecorator((withKnobs as any)({ escapeHTML: false }));
 
 const createProps = (

ts/components/conversation/media-gallery/MediaGridItem.tsx

@@ -31,9 +31,8 @@ export class MediaGridItem extends React.Component<Props, State> {
     this.onImageErrorBound = this.onImageError.bind(this);
   }
 
-  public onImageError() {
+  public onImageError(): void {
-    // tslint:disable-next-line no-console
+    window.log.info(
-    console.log(
       'MediaGridItem: Image failed to load; failing over to placeholder'
     );
     this.setState({
@@ -41,7 +40,7 @@ export class MediaGridItem extends React.Component<Props, State> {
     });
   }
 
-  public renderContent() {
+  public renderContent(): JSX.Element | null {
     const { mediaItem, i18n } = this.props;
     const { imageBroken } = this.state;
     const { attachment, contentType } = mediaItem;
@@ -70,7 +69,8 @@ export class MediaGridItem extends React.Component<Props, State> {
           onError={this.onImageErrorBound}
         />
       );
-    } else if (contentType && isVideoTypeSupported(contentType)) {
+    }
+    if (contentType && isVideoTypeSupported(contentType)) {
       if (imageBroken || !mediaItem.thumbnailObjectUrl) {
         return (
           <div
@@ -107,9 +107,15 @@ export class MediaGridItem extends React.Component<Props, State> {
     );
   }
 
-  public render() {
+  public render(): JSX.Element {
+    const { onClick } = this.props;
+
     return (
-      <button className="module-media-grid-item" onClick={this.props.onClick}>
+      <button
+        type="button"
+        className="module-media-grid-item"
+        onClick={onClick}
+      >
         {this.renderContent()}
       </button>
     );

ts/components/conversation/media-gallery/groupMediaItemsByDate.ts

@@ -67,11 +67,13 @@ const toSection = (
     case 'yesterday':
     case 'thisWeek':
     case 'thisMonth':
+      // eslint-disable-next-line consistent-return
       return {
         type: firstMediaItemWithSection.type,
         mediaItems,
       };
     case 'yearMonth':
+      // eslint-disable-next-line consistent-return
       return {
         type: firstMediaItemWithSection.type,
         year: firstMediaItemWithSection.year,
@@ -83,6 +85,7 @@ const toSection = (
       // error TS2345: Argument of type 'any' is not assignable to parameter
       // of type 'never'.
       // return missingCaseError(firstMediaItemWithSection.type);
+      // eslint-disable-next-line no-useless-return
       return;
   }
 };

ts/components/conversation/media-gallery/types/Message.ts

@@ -3,5 +3,7 @@ import { Attachment } from '../../../../types/Attachment';
 export type Message = {
   id: string;
   attachments: Array<Attachment>;
+  // Assuming this is for the API
+  // eslint-disable-next-line camelcase
   received_at: number;
 };

ts/util/lint/exceptions.json

@@ -12830,18 +12830,17 @@
     "path": "ts/components/CallScreen.js",
     "line": "        this.localVideoRef = react_1.default.createRef();",
     "lineNumber": 98,
-    "reasonCategory": "usageTrusted",
+    "reasonCategory": "falseMatch|testCode|exampleCode|otherUtilityCode|regexMatchedSafeCode|notExercisedByOurApp|ruleNeeded|usageTrusted",
-    "updated": "2020-05-28T17:22:06.472Z",
+    "updated": "2020-09-14T23:03:44.863Z",
-    "reasonDetail": "Used to render local preview video"
+    "reasonDetail": "<optional>"
   },
   {
     "rule": "React-createRef",
     "path": "ts/components/CallScreen.js",
     "line": "        this.remoteVideoRef = react_1.default.createRef();",
-    "lineNumber": 98,
+    "lineNumber": 99,
     "reasonCategory": "usageTrusted",
-    "updated": "2020-09-11T17:24:56.124Z",
+    "updated": "2020-09-14T23:03:44.863Z"
-    "reasonDetail": "Necessary for showing call video"
   },
   {
     "rule": "React-createRef",
@@ -12856,10 +12855,9 @@
     "rule": "React-createRef",
     "path": "ts/components/CallScreen.tsx",
     "line": "    this.remoteVideoRef = React.createRef();",
-    "lineNumber": 75,
+    "lineNumber": 80,
     "reasonCategory": "usageTrusted",
-    "updated": "2020-09-11T17:24:56.124Z",
+    "updated": "2020-09-14T23:03:44.863Z"
-    "reasonDetail": "Necessary for showing call video"
   },
   {
     "rule": "React-createRef",
@@ -12944,10 +12942,9 @@
     "rule": "React-createRef",
     "path": "ts/components/Lightbox.js",
     "line": "        this.videoRef = react_1.default.createRef();",
-    "lineNumber": 142,
+    "lineNumber": 149,
     "reasonCategory": "usageTrusted",
-    "updated": "2020-09-11T17:24:56.124Z",
+    "updated": "2020-09-14T23:03:44.863Z"
-    "reasonDetail": "Used to control video"
   },
   {
     "rule": "React-createRef",
@@ -13016,7 +13013,7 @@
     "rule": "React-createRef",
     "path": "ts/components/conversation/ConversationHeader.tsx",
     "line": "    this.menuTriggerRef = React.createRef();",
-    "lineNumber": 79,
+    "lineNumber": 82,
     "reasonCategory": "usageTrusted",
     "updated": "2020-05-20T20:10:43.540Z",
     "reasonDetail": "Used to reference popup menu"
@@ -13069,24 +13066,23 @@
     "rule": "React-createRef",
     "path": "ts/components/conversation/Message.tsx",
     "line": "  public audioRef: React.RefObject<HTMLAudioElement> = React.createRef();",
-    "lineNumber": 212,
+    "lineNumber": 213,
     "reasonCategory": "usageTrusted",
-    "updated": "2020-08-28T19:36:40.817Z"
+    "updated": "2020-09-14T23:03:44.863Z"
   },
   {
     "rule": "React-createRef",
     "path": "ts/components/conversation/Message.tsx",
     "line": "  public focusRef: React.RefObject<HTMLDivElement> = React.createRef();",
-    "lineNumber": 213,
+    "lineNumber": 215,
     "reasonCategory": "usageTrusted",
-    "updated": "2020-09-11T17:24:56.124Z",
+    "updated": "2020-09-14T23:03:44.863Z"
-    "reasonDetail": "Used for managing focus only"
   },
   {
     "rule": "React-createRef",
     "path": "ts/components/conversation/Message.tsx",
     "line": "  > = React.createRef();",
-    "lineNumber": 216,
+    "lineNumber": 219,
     "reasonCategory": "usageTrusted",
     "updated": "2020-08-28T19:36:40.817Z"
   },
@@ -13094,7 +13090,7 @@
     "rule": "React-createRef",
     "path": "ts/components/conversation/MessageDetail.js",
     "line": "        this.focusRef = react_1.default.createRef();",
-    "lineNumber": 15,
+    "lineNumber": 18,
     "reasonCategory": "usageTrusted",
     "updated": "2019-11-01T22:46:33.013Z",
     "reasonDetail": "Used for setting focus only"
@@ -13112,7 +13108,7 @@
     "rule": "React-createRef",
     "path": "ts/components/conversation/media-gallery/MediaGallery.js",
     "line": "        this.focusRef = react_1.default.createRef();",
-    "lineNumber": 25,
+    "lineNumber": 28,
     "reasonCategory": "usageTrusted",
     "updated": "2019-11-01T22:46:33.013Z",
     "reasonDetail": "Used for setting focus only"
@@ -13121,7 +13117,7 @@
     "rule": "React-createRef",
     "path": "ts/components/conversation/media-gallery/MediaGallery.tsx",
     "line": "  public readonly focusRef: React.RefObject<HTMLDivElement> = React.createRef();",
-    "lineNumber": 66,
+    "lineNumber": 68,
     "reasonCategory": "usageTrusted",
     "updated": "2019-11-01T22:46:33.013Z",
     "reasonDetail": "Used for setting focus only"

tslint.json

@@ -181,6 +181,7 @@
       "ts/backbone/**",
       "ts/build/**",
       "ts/components/*.ts[x]",
+      "ts/components/conversation/**",
       "ts/components/emoji/**",
       "ts/notifications/**",
       "ts/protobuf/**",