Remove unsafe type assertions from emoji, selection, and sound utilities

src/libs/EmojiTrie.ts

@@ -1,5 +1,5 @@
 import emojis, {importEmojiLocale, localeEmojis} from '@assets/emojis';
-import type {Emoji, HeaderEmoji} from '@assets/emojis/types';
+import type {Emoji} from '@assets/emojis/types';
 
 import CONST from '@src/CONST';
 import {FULLY_SUPPORTED_LOCALES} from '@src/CONST/LOCALES';
@@ -12,7 +12,7 @@ import Trie from './Trie';
 type EmojiMetaData = {
     suggestions?: Emoji[];
     code?: string;
-    types?: string[];
+    types?: readonly string[];
     name?: string;
     hexcode?: string;
 };
@@ -64,17 +64,17 @@ function getNameParts(name: string): string[] {
 }
 
 function createTrie(lang: FullySupportedLocale = CONST.LOCALES.DEFAULT): Trie<EmojiMetaData> {
-    const trie = new Trie();
+    const trie = new Trie<EmojiMetaData>();
     const langEmojis = localeEmojis[lang];
     const defaultLangEmojis = localeEmojis[CONST.LOCALES.DEFAULT];
     const isDefaultLocale = lang === CONST.LOCALES.DEFAULT;
 
     for (const pickerEmoji of emojis) {
-        if ((pickerEmoji as HeaderEmoji).header) {
+        if ('header' in pickerEmoji) {
             continue;
         }
 
-        const emoji = pickerEmoji as Emoji;
+        const emoji = pickerEmoji;
 
         const englishName = emoji.name;
         const localeName = langEmojis?.[emoji.code]?.name ?? englishName;
@@ -84,7 +84,7 @@ function createTrie(lang: FullySupportedLocale = CONST.LOCALES.DEFAULT): Trie<Em
         if (isNew) {
             node.metaData = {code: emoji.code, types: emoji.types, name: localeName, hexcode: emoji.hexcode, suggestions: []};
         } else {
-            node.metaData = {suggestions: [...((node.metaData.suggestions as Emoji[] | undefined) ?? [])], code: emoji.code, types: emoji.types, name: localeName, hexcode: emoji.hexcode};
+            node.metaData = {suggestions: [...(node.metaData.suggestions ?? [])], code: emoji.code, types: emoji.types, name: localeName, hexcode: emoji.hexcode};
         }
         if (normalizedName !== localeName) {
             const {node: normNode} = trie.getOrCreate(normalizedName);
@@ -100,7 +100,7 @@ function createTrie(lang: FullySupportedLocale = CONST.LOCALES.DEFAULT): Trie<Em
                 aliasNode.metaData = {code: emoji.code, types: emoji.types, name: localeName, hexcode: emoji.hexcode, suggestions: []};
             } else {
                 aliasNode.metaData = {
-                    suggestions: [...((aliasNode.metaData.suggestions as Emoji[] | undefined) ?? [])],
+                    suggestions: [...(aliasNode.metaData.suggestions ?? [])],
                     code: emoji.code,
                     types: emoji.types,
                     name: localeName,

src/libs/SelectionScraper/index.ts

@@ -1,6 +1,6 @@
 import CONST from '@src/CONST';
 
-import type {ChildNode} from 'domhandler';
+import type {ChildNode, ParentNode} from 'domhandler';
 
 import render from 'dom-serializer';
 import {DataNode, Element} from 'domhandler';
@@ -12,6 +12,35 @@ import type GetCurrentSelection from './types';
 const markdownElements = new Set(['h1', 'strong', 'em', 'del', 'blockquote', 'q', 'code', 'pre', 'a', 'br', 'li', 'ul', 'ol', 'b', 'i', 's', 'mention-user']);
 const tagAttribute = 'data-testid';
 
+const installTransformedChildren = (parent: ParentNode, children: ChildNode[]) => {
+    const transformedParent = parent;
+    transformedParent.children = children;
+
+    for (const [index, child] of children.entries()) {
+        child.parent = transformedParent;
+        child.prev = index > 0 ? (children.at(index - 1) ?? null) : null;
+        child.next = children.at(index + 1) ?? null;
+    }
+};
+
+const installForeignObjectRenderCompatibility = (parent: ParentNode, isWithinSVG = false) => {
+    for (const child of parent.children) {
+        if (!(child instanceof Element)) {
+            continue;
+        }
+
+        const childIsWithinSVG = isWithinSVG || child.name === 'svg';
+        if (childIsWithinSVG && child.name === 'foreignobject') {
+            const lowercaseForeignObject = child.cloneNode();
+            for (const foreignObjectChild of child.children) {
+                foreignObjectChild.parent = lowercaseForeignObject;
+            }
+        }
+
+        installForeignObjectRenderCompatibility(child, childIsWithinSVG);
+    }
+};
+
 /**
  * Reads html of selection. If browser doesn't support Selection API, returns empty string.
  * @returns HTML of selection as String
@@ -53,7 +82,7 @@ const getHTMLOfSelection = (): string => {
         // If clonedSelection has no text content this data has no meaning to us.
         if (clonedSelection.textContent) {
             let parent: globalThis.Element | null = null;
-            let child = clonedSelection;
+            let child: globalThis.Node = clonedSelection;
 
             // If selection starts and ends within same text node we use its parentNode. This is because we can't
             // use closest function on a [Text](https://developer.mozilla.org/en-US/docs/Web/API/Text) node.
@@ -73,16 +102,16 @@ const getHTMLOfSelection = (): string => {
             if (range.commonAncestorContainer instanceof HTMLElement) {
                 parent = range.commonAncestorContainer.closest(`[${tagAttribute}]`);
             } else {
-                parent = (range.commonAncestorContainer.parentNode as HTMLElement | null)?.closest(`[${tagAttribute}]`) ?? null;
+                parent = range.commonAncestorContainer.parentElement?.closest(`[${tagAttribute}]`) ?? null;
             }
 
             // Keep traversing up to clone all parents with 'data-testid' attribute.
             while (parent) {
                 const cloned = parent.cloneNode();
                 cloned.appendChild(child);
-                child = cloned as DocumentFragment;
+                child = cloned;
 
-                parent = (parent.parentNode as HTMLElement | null)?.closest(`[${tagAttribute}]`) ?? null;
+                parent = parent.parentElement?.closest(`[${tagAttribute}]`) ?? null;
             }
 
             div.appendChild(child);
@@ -107,24 +136,25 @@ const getHTMLOfSelection = (): string => {
  * @param dom - dom htmlparser2 dom representation
  */
 const replaceNodes = (dom: ChildNode, isChildOfEditorElement: boolean): ChildNode => {
-    let domName;
-    let domChildren: ChildNode[] = [];
-    const domAttribs: Element['attribs'] = {};
-    let data = '';
-
     // Encoding HTML chars '< >' in the text, because any HTML will be removed in stripHTML method.
     if (dom.type.toString() === 'text' && dom instanceof DataNode) {
-        data = Str.htmlEncode(dom.data);
+        const clonedDom = dom.cloneNode();
+        clonedDom.data = Str.htmlEncode(dom.data);
         if (dom.parent instanceof Element && dom.parent?.attribs?.[tagAttribute] === 'email-with-break-opportunities') {
-            data = data.replaceAll('\u200b', '');
+            clonedDom.data = clonedDom.data.replaceAll('\u200b', '');
         }
-    } else if (dom instanceof Element) {
-        domName = dom.name;
+
+        return clonedDom;
+    }
+
+    if (dom instanceof Element) {
+        const clonedDom = dom.cloneNode();
+        clonedDom.attribs = {};
         const child = dom.children.at(0);
         if (dom.attribs?.[tagAttribute]) {
             // If it's a markdown element, rename it according to the value of data-testid, so ExpensiMark can parse it
             if (markdownElements.has(dom.attribs[tagAttribute])) {
-                domName = dom.attribs[tagAttribute];
+                clonedDom.name = dom.attribs[tagAttribute];
             }
         } else if (dom.name === 'div' && dom.children.length === 1 && isChildOfEditorElement && child) {
             // We are excluding divs that are children of our editor element and have only one child to prevent
@@ -134,36 +164,35 @@ const replaceNodes = (dom: ChildNode, isChildOfEditorElement: boolean): ChildNod
 
         // We need to preserve href attribute in order to copy links.
         if (dom.attribs?.href) {
-            domAttribs.href = dom.attribs.href;
+            clonedDom.attribs.href = dom.attribs.href;
         }
 
-        if (dom.children) {
-            domChildren = dom.children.map((c) => replaceNodes(c, isChildOfEditorElement || !!dom.attribs?.[tagAttribute]));
-        }
-    } else {
-        throw new Error(`Unknown dom type: ${dom.type}`);
+        const transformedChildren = dom.children.map((c) => replaceNodes(c, isChildOfEditorElement || !!dom.attribs?.[tagAttribute]));
+        installTransformedChildren(clonedDom, transformedChildren);
+        return clonedDom;
     }
 
-    return {
-        ...dom,
-        data,
-        name: domName,
-        attribs: domAttribs,
-        children: domChildren,
-    } as Element & DataNode;
+    throw new Error(`Unknown dom type: ${dom.type}`);
 };
 
 /**
  * Resolves the current selection to values and produces clean HTML.
  */
 const getCurrentSelection: GetCurrentSelection = () => {
-    const domRepresentation = parseDocument(getHTMLOfSelection());
-    domRepresentation.children = domRepresentation.children.map((item) => replaceNodes(item, false));
+    const parsedDom = parseDocument(getHTMLOfSelection());
+    const domRepresentation = parsedDom.cloneNode();
+    installTransformedChildren(
+        domRepresentation,
+        parsedDom.children.map((item) => replaceNodes(item, false)),
+    );
+
+    const renderView = domRepresentation.cloneNode(true);
+    installForeignObjectRenderCompatibility(renderView);
 
     // Newline characters need to be removed here because the HTML could contain both newlines and <br> tags, and when
     // <br> tags are converted later to markdown, it creates duplicate newline characters. This means that when the content
     // is pasted, there are extra newlines in the content that we want to avoid.
-    const newHtml = render(domRepresentation).replaceAll('<br>\n', '<br>');
+    const newHtml = render(renderView).replaceAll('<br>\n', '<br>');
     return newHtml || '';
 };
 

src/libs/Sound/index.native.ts

@@ -1,3 +1,8 @@
+import attentionSound from '@assets/sounds/attention.mp3';
+import doneSound from '@assets/sounds/done.mp3';
+import receiveSound from '@assets/sounds/receive.mp3';
+import successSound from '@assets/sounds/success.mp3';
+
 import type {AudioSource} from 'expo-audio';
 import type {ValueOf} from 'type-fest';
 
@@ -7,10 +12,10 @@ import {getIsMuted, SOUNDS, withMinimalExecutionTime} from './BaseSound';
 
 // Sound assets must be required at compile time
 const SOUND_ASSETS: Record<ValueOf<typeof SOUNDS>, AudioSource> = {
-    [SOUNDS.DONE]: require('@assets/sounds/done.mp3') as AudioSource,
-    [SOUNDS.SUCCESS]: require('@assets/sounds/success.mp3') as AudioSource,
-    [SOUNDS.ATTENTION]: require('@assets/sounds/attention.mp3') as AudioSource,
-    [SOUNDS.RECEIVE]: require('@assets/sounds/receive.mp3') as AudioSource,
+    [SOUNDS.DONE]: doneSound,
+    [SOUNDS.SUCCESS]: successSound,
+    [SOUNDS.ATTENTION]: attentionSound,
+    [SOUNDS.RECEIVE]: receiveSound,
 };
 
 // Configure audio mode for in-app notification sounds:

src/types/global.d.ts

@@ -12,6 +12,11 @@ declare module '*.jpg' {
     export default value;
 }
 
+declare module '*.mp3' {
+    const value: number;
+    export default value;
+}
+
 declare module '*.svg' {
     import type React from 'react';
     import type {SvgProps} from 'react-native-svg';

tests/unit/SelectionScraperTest.ts

@@ -0,0 +1,86 @@
+import type * as SelectionScraperModule from '@libs/SelectionScraper/index.native';
+
+import {Document, Element} from 'domhandler';
+
+// Selection scraping only exists in the web implementation; the native variant always returns an empty string.
+const SelectionScraper = jest.requireActual<typeof SelectionScraperModule>('@libs/SelectionScraper/index.ts').default;
+
+const fixtures: HTMLElement[] = [];
+
+const selectFixture = (html: string) => {
+    const fixture = document.createElement('div');
+    fixture.innerHTML = html;
+    document.body.append(fixture);
+    fixtures.push(fixture);
+
+    const range = document.createRange();
+    range.selectNodeContents(fixture);
+    const selection = window.getSelection();
+    if (!selection) {
+        throw new Error('Selection API is unavailable');
+    }
+    selection.removeAllRanges();
+    selection.addRange(range);
+};
+
+describe('SelectionScraper', () => {
+    afterEach(() => {
+        window.getSelection()?.removeAllRanges();
+        for (const fixture of fixtures) {
+            fixture.remove();
+        }
+        fixtures.length = 0;
+        jest.restoreAllMocks();
+    });
+
+    it('preserves pinned SVG foreignObject serialization', () => {
+        selectFixture('<svg><foreignObject><div></div></foreignObject></svg><span>selected</span>');
+
+        expect(SelectionScraper.getCurrentSelection()).toBe('<svg><foreignObject><div/></foreignObject></svg><span>selected</span>');
+    });
+
+    it('retains coherent transformed MathML relationships', () => {
+        const documentCloneSpy = jest.spyOn(Document.prototype, 'cloneNode');
+        selectFixture('<math><mtext><div>first</div><span>middle</span><p>last</p></mtext></math>');
+
+        expect(SelectionScraper.getCurrentSelection()).toBe('<math><mtext><div>first</div><span>middle</span><p>last</p></mtext></math>');
+
+        const firstCloneResult = documentCloneSpy.mock.results.at(0);
+        if (!firstCloneResult || firstCloneResult.type !== 'return' || !(firstCloneResult.value instanceof Document)) {
+            throw new Error('SelectionScraper did not clone the parsed document');
+        }
+        const transformedDocument = firstCloneResult.value;
+
+        const math = transformedDocument.children.at(0);
+        if (!(math instanceof Element)) {
+            throw new Error('Transformed MathML root is not an element');
+        }
+        const mtext = math.children.at(0);
+        if (!(mtext instanceof Element)) {
+            throw new Error('Transformed mtext is not an element');
+        }
+
+        const [first, middle, last] = mtext.children;
+        if (!first || !middle || !last || mtext.children.length !== 3) {
+            throw new Error('Transformed mtext does not own the expected children');
+        }
+        expect(first.parent).toBe(mtext);
+        expect(first.prev).toBeNull();
+        expect(first.next).toBe(middle);
+        expect(middle.parent).toBe(mtext);
+        expect(middle.prev).toBe(first);
+        expect(middle.next).toBe(last);
+        expect(last.parent).toBe(mtext);
+        expect(last.prev).toBe(middle);
+        expect(last.next).toBeNull();
+    });
+
+    it('preserves ordinary HTML transformations', () => {
+        selectFixture(
+            '<span data-testid="strong" class="discarded">bold &amp; <a href="https://example.com" class="discarded">link</a><br>\n</span>' +
+                '<div data-testid="editor"><div><span>nested</span></div><span data-testid="email-with-break-opportunities">a\u200bb</span></div>',
+        );
+
+        expect(SelectionScraper.getCurrentSelection()).toBe('<strong>bold &amp; <a href="https://example.com">link</a><br></strong><div><span>nested</span><span>ab</span></div>');
+    });
+});