Do not preload images with FastImage (#4315)

Co-authored-by: Elias Nahum <nahumhbl@gmail.com>

app/components/file_attachment_list/file_attachment_image.js

@@ -7,7 +7,6 @@ import {
     View,
     StyleSheet,
 } from 'react-native';
-import FastImage from 'react-native-fast-image';
 
 import brokenImageIcon from '@assets/images/icons/brokenimage.png';
 import ProgressiveImage from '@components/progressive_image';
@@ -49,29 +48,9 @@ export default class FileAttachmentImage extends PureComponent {
         resizeMethod: 'resize',
     };
 
-    constructor(props) {
-        super(props);
-
-        const {file} = props;
-        if (file && file.id && !file.localPath) {
-            const headers = Client4.getOptions({}).headers;
-
-            const preloadImages = [
-                {uri: Client4.getFileThumbnailUrl(file.id), headers},
-                {uri: Client4.getFileUrl(file.id), headers},
-            ];
-
-            if (isGif(file)) {
-                preloadImages.push({uri: Client4.getFilePreviewUrl(file.id), headers});
-            }
-
-            FastImage.preload(preloadImages);
-        }
-
-        this.state = {
-            failed: false,
-        };
-    }
+    state = {
+        failed: false,
+    };
 
     boxPlaceholder = () => {
         if (this.props.isSingleImage) {

app/components/markdown/markdown_image/markdown_image.js

@@ -77,7 +77,6 @@ export default class MarkdownImage extends ImageViewPort {
             uri = EphemeralStore.currentServerUrl + uri;
         }
 
-        FastImage.preload([{uri}]);
         return uri;
     };
 

app/components/message_attachments/attachment_author.js

@@ -16,14 +16,6 @@ export default class AttachmentAuthor extends PureComponent {
         theme: PropTypes.object.isRequired,
     };
 
-    constructor(props) {
-        super(props);
-
-        if (props.icon) {
-            FastImage.preload([{uri: props.icon}]);
-        }
-    }
-
     openLink = () => {
         const {link} = this.props;
         if (link && Linking.canOpenURL(link)) {

app/components/message_attachments/attachment_footer.js

@@ -17,14 +17,6 @@ export default class AttachmentFooter extends PureComponent {
         theme: PropTypes.object.isRequired,
     };
 
-    constructor(props) {
-        super(props);
-
-        if (props.icon) {
-            FastImage.preload([{uri: props.icon}]);
-        }
-    }
-
     render() {
         const {
             text,

app/components/post_attachment_opengraph/post_attachment_opengraph.js

@@ -110,8 +110,6 @@ export default class PostAttachmentOpenGraph extends PureComponent {
             dimensions = calculateDimensions(ogImage.height, ogImage.width, this.getViewPostWidth());
         }
 
-        FastImage.preload([{uri: imageUrl}]);
-
         return {
             hasImage: true,
             ...dimensions,

app/components/profile_picture/profile_picture.js

@@ -61,7 +61,6 @@ export default class ProfilePicture extends PureComponent {
             this.setImageURL(imageUri);
         } else if (user) {
             const uri = Client4.getProfilePictureUrl(user.id, user.last_picture_update);
-            FastImage.preload([{uri, headers: Client4.getOptions({}).headers}]);
 
             this.setImageURL(uri);
             this.clearProfileImageUri();
@@ -102,7 +101,6 @@ export default class ProfilePicture extends PureComponent {
 
             if (nextUrl && url !== nextUrl) {
                 // empty function is so that promise unhandled is not triggered in dev mode
-                FastImage.preload([{uri: nextUrl, headers: Client4.getOptions({}).headers}]);
                 this.setImageURL(nextUrl);
                 this.clearProfileImageUri();
             }

app/components/progressive_image/progressive_image.test.js

@@ -8,10 +8,6 @@ import Preferences from '@mm-redux/constants/preferences';
 
 import ProgressiveImage from './progressive_image';
 
-jest.mock('react-native-fast-image', () => ({
-    preload: jest.fn(),
-}));
-
 jest.useFakeTimers();
 
 describe('ProgressiveImage', () => {

app/components/team_icon/team_icon.js

@@ -54,7 +54,6 @@ export default class TeamIcon extends React.PureComponent {
 
     preloadTeamIcon = (teamId, lastIconUpdate) => {
         const uri = Client4.getTeamIconUrl(teamId, lastIconUpdate);
-        FastImage.preload([{uri, headers: Client4.getOptions({}).headers}]);
         this.setImageURL(uri);
     };
 

test/setup.js

@@ -119,13 +119,6 @@ jest.mock('react-native-device-info', () => {
     };
 });
 
-jest.mock('react-native-fast-image', () => {
-    const FastImage = jest.requireActual('react-native-fast-image').default;
-    FastImage.preload = jest.fn();
-
-    return FastImage;
-});
-
 jest.mock('rn-fetch-blob', () => ({
     fs: {
         dirs: {