diff --git a/eslint.config.js b/eslint.config.js
index e7bc3f37aaa..73f062af66a 100644
--- a/eslint.config.js
+++ b/eslint.config.js
@@ -2271,21 +2271,13 @@ export default tseslint.config(
 			'@typescript-eslint': tseslint.plugin,
 		},
 		rules: {
-			'@typescript-eslint/naming-convention': [
+			'no-restricted-syntax': [
 				'warn',
 				{
-					'selector': 'default',
-					'modifiers': ['private'],
-					'format': null,
-					'leadingUnderscore': 'require'
+					selector: ':matches(PropertyDefinition, TSParameterProperty, MethodDefinition[key.name!="constructor"])[accessibility="private"]',
+					message: 'Use #private instead',
 				},
-				{
-					'selector': 'default',
-					'modifiers': ['public'],
-					'format': null,
-					'leadingUnderscore': 'forbid'
-				}
-			]
+			],
 		}
 	},
 	// Additional extension strictness rules
@@ -2351,5 +2343,4 @@ export default tseslint.config(
 				},
 			],
 		}
-	},
-);
+	});
diff --git a/extensions/markdown-language-features/preview-src/activeLineMarker.ts b/extensions/markdown-language-features/preview-src/activeLineMarker.ts
index 75c1ed7cbc9..33082275f6c 100644
--- a/extensions/markdown-language-features/preview-src/activeLineMarker.ts
+++ b/extensions/markdown-language-features/preview-src/activeLineMarker.ts
@@ -5,27 +5,27 @@
 import { getElementsForSourceLine } from './scroll-sync';
 
 export class ActiveLineMarker {
-	private _current: any;
+	#current: any;
 
 	onDidChangeTextEditorSelection(line: number, documentVersion: number) {
 		const { previous } = getElementsForSourceLine(line, documentVersion);
-		this._update(previous && (previous.codeElement || previous.element));
+		this.#update(previous && (previous.codeElement || previous.element));
 	}
 
-	private _update(before: HTMLElement | undefined) {
-		this._unmarkActiveElement(this._current);
-		this._markActiveElement(before);
-		this._current = before;
+	#update(before: HTMLElement | undefined) {
+		this.#unmarkActiveElement(this.#current);
+		this.#markActiveElement(before);
+		this.#current = before;
 	}
 
-	private _unmarkActiveElement(element: HTMLElement | undefined) {
+	#unmarkActiveElement(element: HTMLElement | undefined) {
 		if (!element) {
 			return;
 		}
 		element.classList.toggle('code-active-line', false);
 	}
 
-	private _markActiveElement(element: HTMLElement | undefined) {
+	#markActiveElement(element: HTMLElement | undefined) {
 		if (!element) {
 			return;
 		}
diff --git a/extensions/markdown-language-features/preview-src/csp.ts b/extensions/markdown-language-features/preview-src/csp.ts
index fcc38352da8..4db9d7b116f 100644
--- a/extensions/markdown-language-features/preview-src/csp.ts
+++ b/extensions/markdown-language-features/preview-src/csp.ts
@@ -11,45 +11,49 @@ import { getStrings } from './strings';
  * Shows an alert when there is a content security policy violation.
  */
 export class CspAlerter {
-	private _didShow = false;
-	private _didHaveCspWarning = false;
+	#didShow = false;
+	#didHaveCspWarning = false;
 
-	private _messaging?: MessagePoster;
+	#messaging?: MessagePoster;
+
+	readonly #settingsManager: SettingsManager;
 
 	constructor(
-		private readonly _settingsManager: SettingsManager,
+		settingsManager: SettingsManager,
 	) {
+		this.#settingsManager = settingsManager;
+
 		document.addEventListener('securitypolicyviolation', () => {
-			this._onCspWarning();
+			this.#onCspWarning();
 		});
 
 		window.addEventListener('message', (event) => {
 			if (event?.data && event.data.name === 'vscode-did-block-svg') {
-				this._onCspWarning();
+				this.#onCspWarning();
 			}
 		});
 	}
 
 	public setPoster(poster: MessagePoster) {
-		this._messaging = poster;
-		if (this._didHaveCspWarning) {
-			this._showCspWarning();
+		this.#messaging = poster;
+		if (this.#didHaveCspWarning) {
+			this.#showCspWarning();
 		}
 	}
 
-	private _onCspWarning() {
-		this._didHaveCspWarning = true;
-		this._showCspWarning();
+	#onCspWarning() {
+		this.#didHaveCspWarning = true;
+		this.#showCspWarning();
 	}
 
-	private _showCspWarning() {
+	#showCspWarning() {
 		const strings = getStrings();
-		const settings = this._settingsManager.settings;
+		const settings = this.#settingsManager.settings;
 
-		if (this._didShow || settings.disableSecurityWarnings || !this._messaging) {
+		if (this.#didShow || settings.disableSecurityWarnings || !this.#messaging) {
 			return;
 		}
-		this._didShow = true;
+		this.#didShow = true;
 
 		const notification = document.createElement('a');
 		notification.innerText = strings.cspAlertMessageText;
@@ -59,7 +63,7 @@ export class CspAlerter {
 		notification.setAttribute('role', 'button');
 		notification.setAttribute('aria-label', strings.cspAlertMessageLabel);
 		notification.onclick = () => {
-			this._messaging!.postMessage('showPreviewSecuritySelector', { source: settings.source });
+			this.#messaging!.postMessage('showPreviewSecuritySelector', { source: settings.source });
 		};
 		document.body.appendChild(notification);
 	}
diff --git a/extensions/markdown-language-features/preview-src/loading.ts b/extensions/markdown-language-features/preview-src/loading.ts
index c6e6d27acd9..ac5beaa0f8b 100644
--- a/extensions/markdown-language-features/preview-src/loading.ts
+++ b/extensions/markdown-language-features/preview-src/loading.ts
@@ -5,15 +5,15 @@
 import { MessagePoster } from './messaging';
 
 export class StyleLoadingMonitor {
-	private readonly _unloadedStyles: string[] = [];
-	private _finishedLoading: boolean = false;
+	readonly #unloadedStyles: string[] = [];
+	#finishedLoading: boolean = false;
 
-	private _poster?: MessagePoster;
+	#poster?: MessagePoster;
 
 	constructor() {
 		const onStyleLoadError = (event: any) => {
 			const source = event.target.dataset.source;
-			this._unloadedStyles.push(source);
+			this.#unloadedStyles.push(source);
 		};
 
 		window.addEventListener('DOMContentLoaded', () => {
@@ -25,18 +25,18 @@ export class StyleLoadingMonitor {
 		});
 
 		window.addEventListener('load', () => {
-			if (!this._unloadedStyles.length) {
+			if (!this.#unloadedStyles.length) {
 				return;
 			}
-			this._finishedLoading = true;
-			this._poster?.postMessage('previewStyleLoadError', { unloadedStyles: this._unloadedStyles });
+			this.#finishedLoading = true;
+			this.#poster?.postMessage('previewStyleLoadError', { unloadedStyles: this.#unloadedStyles });
 		});
 	}
 
 	public setPoster(poster: MessagePoster): void {
-		this._poster = poster;
-		if (this._finishedLoading) {
-			poster.postMessage('previewStyleLoadError', { unloadedStyles: this._unloadedStyles });
+		this.#poster = poster;
+		if (this.#finishedLoading) {
+			poster.postMessage('previewStyleLoadError', { unloadedStyles: this.#unloadedStyles });
 		}
 	}
 }
diff --git a/extensions/markdown-language-features/preview-src/scroll-sync.ts b/extensions/markdown-language-features/preview-src/scroll-sync.ts
index 33d81094cb5..14aa18d5490 100644
--- a/extensions/markdown-language-features/preview-src/scroll-sync.ts
+++ b/extensions/markdown-language-features/preview-src/scroll-sync.ts
@@ -9,18 +9,18 @@ const codeLineClass = 'code-line';
 
 
 export class CodeLineElement {
-	private readonly _detailParentElements: readonly HTMLDetailsElement[];
+	readonly #detailParentElements: readonly HTMLDetailsElement[];
 
 	constructor(
 		readonly element: HTMLElement,
 		readonly line: number,
 		readonly codeElement?: HTMLElement,
 	) {
-		this._detailParentElements = Array.from(getParentsWithTagName<HTMLDetailsElement>(element, 'DETAILS'));
+		this.#detailParentElements = Array.from(getParentsWithTagName<HTMLDetailsElement>(element, 'DETAILS'));
 	}
 
 	get isVisible(): boolean {
-		if (this._detailParentElements.some(x => !x.open)) {
+		if (this.#detailParentElements.some(x => !x.open)) {
 			return false;
 		}
 
diff --git a/extensions/markdown-language-features/preview-src/settings.ts b/extensions/markdown-language-features/preview-src/settings.ts
index 0fb5d0c2686..6d642b58c64 100644
--- a/extensions/markdown-language-features/preview-src/settings.ts
+++ b/extensions/markdown-language-features/preview-src/settings.ts
@@ -33,13 +33,13 @@ export function getData<T = {}>(key: string): T {
 }
 
 export class SettingsManager {
-	private _settings: PreviewSettings = getData('data-settings');
+	#settings: PreviewSettings = getData('data-settings');
 
 	public get settings(): PreviewSettings {
-		return this._settings;
+		return this.#settings;
 	}
 
 	public updateSettings(newSettings: PreviewSettings) {
-		this._settings = newSettings;
+		this.#settings = newSettings;
 	}
 }
diff --git a/extensions/markdown-language-features/src/client/client.ts b/extensions/markdown-language-features/src/client/client.ts
index bf7be3f3206..dc279f02d84 100644
--- a/extensions/markdown-language-features/src/client/client.ts
+++ b/extensions/markdown-language-features/src/client/client.ts
@@ -17,37 +17,43 @@ export type LanguageClientConstructor = (name: string, description: string, clie
 
 export class MdLanguageClient implements IDisposable {
 
+	readonly #client: BaseLanguageClient;
+	readonly #workspace: VsCodeMdWorkspace;
+
 	constructor(
-		private readonly _client: BaseLanguageClient,
-		private readonly _workspace: VsCodeMdWorkspace,
-	) { }
+		client: BaseLanguageClient,
+		workspace: VsCodeMdWorkspace,
+	) {
+		this.#client = client;
+		this.#workspace = workspace;
+	}
 
 	dispose(): void {
-		this._client.stop();
-		this._workspace.dispose();
+		this.#client.stop();
+		this.#workspace.dispose();
 	}
 
 	resolveLinkTarget(linkText: string, uri: vscode.Uri): Promise<proto.ResolvedDocumentLinkTarget> {
-		return this._client.sendRequest(proto.resolveLinkTarget, { linkText, uri: uri.toString() });
+		return this.#client.sendRequest(proto.resolveLinkTarget, { linkText, uri: uri.toString() });
 	}
 
 	getEditForFileRenames(files: ReadonlyArray<{ oldUri: string; newUri: string }>, token: vscode.CancellationToken) {
-		return this._client.sendRequest(proto.getEditForFileRenames, files, token);
+		return this.#client.sendRequest(proto.getEditForFileRenames, files, token);
 	}
 
 	getReferencesToFileInWorkspace(resource: vscode.Uri, token: vscode.CancellationToken) {
-		return this._client.sendRequest(proto.getReferencesToFileInWorkspace, { uri: resource.toString() }, token);
+		return this.#client.sendRequest(proto.getReferencesToFileInWorkspace, { uri: resource.toString() }, token);
 	}
 
 	prepareUpdatePastedLinks(doc: vscode.Uri, ranges: readonly vscode.Range[], token: vscode.CancellationToken) {
-		return this._client.sendRequest(proto.prepareUpdatePastedLinks, {
+		return this.#client.sendRequest(proto.prepareUpdatePastedLinks, {
 			uri: doc.toString(),
 			ranges: ranges.map(range => Range.create(range.start.line, range.start.character, range.end.line, range.end.character)),
 		}, token);
 	}
 
 	getUpdatePastedLinksEdit(pastingIntoDoc: vscode.Uri, edits: readonly vscode.TextEdit[], metadata: string, token: vscode.CancellationToken) {
-		return this._client.sendRequest(proto.getUpdatePastedLinksEdit, {
+		return this.#client.sendRequest(proto.getUpdatePastedLinksEdit, {
 			metadata,
 			pasteIntoDoc: pastingIntoDoc.toString(),
 			edits: edits.map(edit => TextEdit.replace(edit.range, edit.newText)),
diff --git a/extensions/markdown-language-features/src/client/fileWatchingManager.ts b/extensions/markdown-language-features/src/client/fileWatchingManager.ts
index e2010edda8a..c617a73634d 100644
--- a/extensions/markdown-language-features/src/client/fileWatchingManager.ts
+++ b/extensions/markdown-language-features/src/client/fileWatchingManager.ts
@@ -17,12 +17,12 @@ type DirWatcherEntry = {
 
 export class FileWatcherManager {
 
-	private readonly _fileWatchers = new Map<number, {
+	readonly #fileWatchers = new Map<number, {
 		readonly watcher: vscode.FileSystemWatcher;
 		readonly dirWatchers: DirWatcherEntry[];
 	}>();
 
-	private readonly _dirWatchers = new ResourceMap<{
+	readonly #dirWatchers = new ResourceMap<{
 		readonly watcher: vscode.FileSystemWatcher;
 		refCount: number;
 	}>();
@@ -35,7 +35,7 @@ export class FileWatcherManager {
 
 		const watcher = vscode.workspace.createFileSystemWatcher(new vscode.RelativePattern(uri, '*'), !listeners.create, !listeners.change, !listeners.delete);
 		const parentDirWatchers: DirWatcherEntry[] = [];
-		this._fileWatchers.set(id, { watcher, dirWatchers: parentDirWatchers });
+		this.#fileWatchers.set(id, { watcher, dirWatchers: parentDirWatchers });
 
 		if (listeners.create) { watcher.onDidCreate(listeners.create); }
 		if (listeners.change) { watcher.onDidChange(listeners.change); }
@@ -46,12 +46,12 @@ export class FileWatcherManager {
 			for (let dirUri = Utils.dirname(uri); dirUri.path.length > 1; dirUri = Utils.dirname(dirUri)) {
 				const disposables: IDisposable[] = [];
 
-				let parentDirWatcher = this._dirWatchers.get(dirUri);
+				let parentDirWatcher = this.#dirWatchers.get(dirUri);
 				if (!parentDirWatcher) {
 					const glob = new vscode.RelativePattern(Utils.dirname(dirUri), Utils.basename(dirUri));
 					const parentWatcher = vscode.workspace.createFileSystemWatcher(glob, !listeners.create, true, !listeners.delete);
 					parentDirWatcher = { refCount: 0, watcher: parentWatcher };
-					this._dirWatchers.set(dirUri, parentDirWatcher);
+					this.#dirWatchers.set(dirUri, parentDirWatcher);
 				}
 				parentDirWatcher.refCount++;
 
@@ -81,16 +81,16 @@ export class FileWatcherManager {
 	}
 
 	delete(id: number): void {
-		const entry = this._fileWatchers.get(id);
+		const entry = this.#fileWatchers.get(id);
 		if (entry) {
 			for (const dirWatcher of entry.dirWatchers) {
 				disposeAll(dirWatcher.disposables);
 
-				const dirWatcherEntry = this._dirWatchers.get(dirWatcher.uri);
+				const dirWatcherEntry = this.#dirWatchers.get(dirWatcher.uri);
 				if (dirWatcherEntry) {
 					if (--dirWatcherEntry.refCount <= 0) {
 						dirWatcherEntry.watcher.dispose();
-						this._dirWatchers.delete(dirWatcher.uri);
+						this.#dirWatchers.delete(dirWatcher.uri);
 					}
 				}
 			}
@@ -98,6 +98,6 @@ export class FileWatcherManager {
 			entry.watcher.dispose();
 		}
 
-		this._fileWatchers.delete(id);
+		this.#fileWatchers.delete(id);
 	}
 }
diff --git a/extensions/markdown-language-features/src/client/inMemoryDocument.ts b/extensions/markdown-language-features/src/client/inMemoryDocument.ts
index 953f0da7c89..2726adb6de1 100644
--- a/extensions/markdown-language-features/src/client/inMemoryDocument.ts
+++ b/extensions/markdown-language-features/src/client/inMemoryDocument.ts
@@ -9,7 +9,7 @@ import { ITextDocument } from '../types/textDocument';
 
 export class InMemoryDocument implements ITextDocument {
 
-	private readonly _doc: TextDocument;
+	readonly #doc: TextDocument;
 
 	public readonly uri: vscode.Uri;
 	public readonly version: number;
@@ -21,15 +21,15 @@ export class InMemoryDocument implements ITextDocument {
 	) {
 		this.uri = uri;
 		this.version = version;
-		this._doc = TextDocument.create(this.uri.toString(), 'markdown', 0, contents);
+		this.#doc = TextDocument.create(this.uri.toString(), 'markdown', 0, contents);
 	}
 
 	getText(range?: vscode.Range): string {
-		return this._doc.getText(range);
+		return this.#doc.getText(range);
 	}
 
 	positionAt(offset: number): vscode.Position {
-		const pos = this._doc.positionAt(offset);
+		const pos = this.#doc.positionAt(offset);
 		return new vscode.Position(pos.line, pos.character);
 	}
 }
diff --git a/extensions/markdown-language-features/src/client/workspace.ts b/extensions/markdown-language-features/src/client/workspace.ts
index 9ea3173c9cc..b07a93ade78 100644
--- a/extensions/markdown-language-features/src/client/workspace.ts
+++ b/extensions/markdown-language-features/src/client/workspace.ts
@@ -17,47 +17,47 @@ import { ResourceMap } from '../util/resourceMap';
  */
 export class VsCodeMdWorkspace extends Disposable {
 
-	private readonly _watcher: vscode.FileSystemWatcher | undefined;
+	readonly #watcher: vscode.FileSystemWatcher | undefined;
 
-	private readonly _documentCache = new ResourceMap<ITextDocument>();
+	readonly #documentCache = new ResourceMap<ITextDocument>();
 
-	private readonly _utf8Decoder = new TextDecoder('utf-8');
+	readonly #utf8Decoder = new TextDecoder('utf-8');
 
 	constructor() {
 		super();
 
-		this._watcher = this._register(vscode.workspace.createFileSystemWatcher('**/*.md'));
+		this.#watcher = this._register(vscode.workspace.createFileSystemWatcher('**/*.md'));
 
-		this._register(this._watcher.onDidChange(async resource => {
-			this._documentCache.delete(resource);
+		this._register(this.#watcher.onDidChange(async resource => {
+			this.#documentCache.delete(resource);
 		}));
 
-		this._register(this._watcher.onDidDelete(resource => {
-			this._documentCache.delete(resource);
+		this._register(this.#watcher.onDidDelete(resource => {
+			this.#documentCache.delete(resource);
 		}));
 
 		this._register(vscode.workspace.onDidOpenTextDocument(e => {
-			this._documentCache.delete(e.uri);
+			this.#documentCache.delete(e.uri);
 		}));
 
 		this._register(vscode.workspace.onDidCloseTextDocument(e => {
-			this._documentCache.delete(e.uri);
+			this.#documentCache.delete(e.uri);
 		}));
 	}
 
-	private _isRelevantMarkdownDocument(doc: vscode.TextDocument) {
+	#isRelevantMarkdownDocument(doc: vscode.TextDocument) {
 		return isMarkdownFile(doc) && doc.uri.scheme !== 'vscode-bulkeditpreview';
 	}
 
 	public async getOrLoadMarkdownDocument(resource: vscode.Uri): Promise<ITextDocument | undefined> {
-		const existing = this._documentCache.get(resource);
+		const existing = this.#documentCache.get(resource);
 		if (existing) {
 			return existing;
 		}
 
-		const matchingDocument = vscode.workspace.textDocuments.find((doc) => this._isRelevantMarkdownDocument(doc) && doc.uri.toString() === resource.toString());
+		const matchingDocument = vscode.workspace.textDocuments.find((doc) => this.#isRelevantMarkdownDocument(doc) && doc.uri.toString() === resource.toString());
 		if (matchingDocument) {
-			this._documentCache.set(resource, matchingDocument);
+			this.#documentCache.set(resource, matchingDocument);
 			return matchingDocument;
 		}
 
@@ -69,9 +69,9 @@ export class VsCodeMdWorkspace extends Disposable {
 			const bytes = await vscode.workspace.fs.readFile(resource);
 
 			// We assume that markdown is in UTF-8
-			const text = this._utf8Decoder.decode(bytes);
+			const text = this.#utf8Decoder.decode(bytes);
 			const doc = new InMemoryDocument(resource, text, 0);
-			this._documentCache.set(resource, doc);
+			this.#documentCache.set(resource, doc);
 			return doc;
 		} catch {
 			return undefined;
diff --git a/extensions/markdown-language-features/src/commandManager.ts b/extensions/markdown-language-features/src/commandManager.ts
index ae2c4985066..0563db020c7 100644
--- a/extensions/markdown-language-features/src/commandManager.ts
+++ b/extensions/markdown-language-features/src/commandManager.ts
@@ -12,27 +12,27 @@ export interface Command {
 }
 
 export class CommandManager {
-	private readonly _commands = new Map<string, vscode.Disposable>();
+	readonly #commands = new Map<string, vscode.Disposable>();
 
 	public dispose() {
-		for (const registration of this._commands.values()) {
+		for (const registration of this.#commands.values()) {
 			registration.dispose();
 		}
-		this._commands.clear();
+		this.#commands.clear();
 	}
 
 	public register<T extends Command>(command: T): vscode.Disposable {
-		this._registerCommand(command.id, command.execute, command);
+		this.#registerCommand(command.id, command.execute, command);
 		return new vscode.Disposable(() => {
-			this._commands.delete(command.id);
+			this.#commands.delete(command.id);
 		});
 	}
 
-	private _registerCommand(id: string, impl: (...args: any[]) => void, thisArg?: any) {
-		if (this._commands.has(id)) {
+	#registerCommand(id: string, impl: (...args: any[]) => void, thisArg?: any) {
+		if (this.#commands.has(id)) {
 			return;
 		}
 
-		this._commands.set(id, vscode.commands.registerCommand(id, impl, thisArg));
+		this.#commands.set(id, vscode.commands.registerCommand(id, impl, thisArg));
 	}
 }
diff --git a/extensions/markdown-language-features/src/commands/copyImage.ts b/extensions/markdown-language-features/src/commands/copyImage.ts
index 86fd349c730..09a683ecfb2 100644
--- a/extensions/markdown-language-features/src/commands/copyImage.ts
+++ b/extensions/markdown-language-features/src/commands/copyImage.ts
@@ -10,12 +10,16 @@ import { MarkdownPreviewManager } from '../preview/previewManager';
 export class CopyImageCommand implements Command {
 	public readonly id = '_markdown.copyImage';
 
+	readonly #webviewManager: MarkdownPreviewManager;
+
 	public constructor(
-		private readonly _webviewManager: MarkdownPreviewManager,
-	) { }
+		webviewManager: MarkdownPreviewManager,
+	) {
+		this.#webviewManager = webviewManager;
+	}
 
 	public execute(args: { id: string; resource: string }) {
 		const source = vscode.Uri.parse(args.resource);
-		this._webviewManager.findPreview(source)?.copyImage(args.id);
+		this.#webviewManager.findPreview(source)?.copyImage(args.id);
 	}
 }
diff --git a/extensions/markdown-language-features/src/commands/openImage.ts b/extensions/markdown-language-features/src/commands/openImage.ts
index 64b1831df0d..4a121fd6989 100644
--- a/extensions/markdown-language-features/src/commands/openImage.ts
+++ b/extensions/markdown-language-features/src/commands/openImage.ts
@@ -10,12 +10,16 @@ import { MarkdownPreviewManager } from '../preview/previewManager';
 export class OpenImageCommand implements Command {
 	public readonly id = '_markdown.openImage';
 
+	readonly #webviewManager: MarkdownPreviewManager;
+
 	public constructor(
-		private readonly _webviewManager: MarkdownPreviewManager,
-	) { }
+		webviewManager: MarkdownPreviewManager,
+	) {
+		this.#webviewManager = webviewManager;
+	}
 
 	public execute(args: { resource: string; imageSource: string }) {
 		const source = vscode.Uri.parse(args.resource);
-		this._webviewManager.openDocumentLink(args.imageSource, source);
+		this.#webviewManager.openDocumentLink(args.imageSource, source);
 	}
 }
diff --git a/extensions/markdown-language-features/src/commands/refreshPreview.ts b/extensions/markdown-language-features/src/commands/refreshPreview.ts
index a94fa797462..52f320098b7 100644
--- a/extensions/markdown-language-features/src/commands/refreshPreview.ts
+++ b/extensions/markdown-language-features/src/commands/refreshPreview.ts
@@ -10,13 +10,19 @@ import { MarkdownPreviewManager } from '../preview/previewManager';
 export class RefreshPreviewCommand implements Command {
 	public readonly id = 'markdown.preview.refresh';
 
+	readonly #webviewManager: MarkdownPreviewManager;
+	readonly #engine: MarkdownItEngine;
+
 	public constructor(
-		private readonly _webviewManager: MarkdownPreviewManager,
-		private readonly _engine: MarkdownItEngine
-	) { }
+		webviewManager: MarkdownPreviewManager,
+		engine: MarkdownItEngine
+	) {
+		this.#webviewManager = webviewManager;
+		this.#engine = engine;
+	}
 
 	public execute() {
-		this._engine.cleanCache();
-		this._webviewManager.refresh();
+		this.#engine.cleanCache();
+		this.#webviewManager.refresh();
 	}
 }
diff --git a/extensions/markdown-language-features/src/commands/reloadPlugins.ts b/extensions/markdown-language-features/src/commands/reloadPlugins.ts
index 16be408bbef..5d410780a2b 100644
--- a/extensions/markdown-language-features/src/commands/reloadPlugins.ts
+++ b/extensions/markdown-language-features/src/commands/reloadPlugins.ts
@@ -10,14 +10,20 @@ import { MarkdownPreviewManager } from '../preview/previewManager';
 export class ReloadPlugins implements Command {
 	public readonly id = 'markdown.api.reloadPlugins';
 
+	readonly #webviewManager: MarkdownPreviewManager;
+	readonly #engine: MarkdownItEngine;
+
 	public constructor(
-		private readonly _webviewManager: MarkdownPreviewManager,
-		private readonly _engine: MarkdownItEngine,
-	) { }
+		webviewManager: MarkdownPreviewManager,
+		engine: MarkdownItEngine,
+	) {
+		this.#webviewManager = webviewManager;
+		this.#engine = engine;
+	}
 
 	public execute(): void {
-		this._engine.reloadPlugins();
-		this._engine.cleanCache();
-		this._webviewManager.refresh();
+		this.#engine.reloadPlugins();
+		this.#engine.cleanCache();
+		this.#webviewManager.refresh();
 	}
 }
diff --git a/extensions/markdown-language-features/src/commands/renderDocument.ts b/extensions/markdown-language-features/src/commands/renderDocument.ts
index ccefddedbd2..ffcbab6d41a 100644
--- a/extensions/markdown-language-features/src/commands/renderDocument.ts
+++ b/extensions/markdown-language-features/src/commands/renderDocument.ts
@@ -10,11 +10,15 @@ import { ITextDocument } from '../types/textDocument';
 export class RenderDocument implements Command {
 	public readonly id = 'markdown.api.render';
 
+	readonly #engine: MarkdownItEngine;
+
 	public constructor(
-		private readonly _engine: MarkdownItEngine
-	) { }
+		engine: MarkdownItEngine
+	) {
+		this.#engine = engine;
+	}
 
 	public async execute(document: ITextDocument | string): Promise<string> {
-		return (await (this._engine.render(document))).html;
+		return (await (this.#engine.render(document))).html;
 	}
 }
diff --git a/extensions/markdown-language-features/src/commands/showPreview.ts b/extensions/markdown-language-features/src/commands/showPreview.ts
index d5d430ade0e..4d59062c1a1 100644
--- a/extensions/markdown-language-features/src/commands/showPreview.ts
+++ b/extensions/markdown-language-features/src/commands/showPreview.ts
@@ -53,14 +53,20 @@ async function showPreview(
 export class ShowPreviewCommand implements Command {
 	public readonly id = 'markdown.showPreview';
 
+	readonly #webviewManager: MarkdownPreviewManager;
+	readonly #telemetryReporter: TelemetryReporter;
+
 	public constructor(
-		private readonly _webviewManager: MarkdownPreviewManager,
-		private readonly _telemetryReporter: TelemetryReporter
-	) { }
+		webviewManager: MarkdownPreviewManager,
+		telemetryReporter: TelemetryReporter
+	) {
+		this.#webviewManager = webviewManager;
+		this.#telemetryReporter = telemetryReporter;
+	}
 
 	public execute(mainUri?: vscode.Uri, allUris?: vscode.Uri[], previewSettings?: DynamicPreviewSettings) {
 		for (const uri of Array.isArray(allUris) ? allUris : [mainUri]) {
-			showPreview(this._webviewManager, this._telemetryReporter, uri, {
+			showPreview(this.#webviewManager, this.#telemetryReporter, uri, {
 				sideBySide: false,
 				locked: previewSettings?.locked
 			});
@@ -71,13 +77,19 @@ export class ShowPreviewCommand implements Command {
 export class ShowPreviewToSideCommand implements Command {
 	public readonly id = 'markdown.showPreviewToSide';
 
+	readonly #webviewManager: MarkdownPreviewManager;
+	readonly #telemetryReporter: TelemetryReporter;
+
 	public constructor(
-		private readonly _webviewManager: MarkdownPreviewManager,
-		private readonly _telemetryReporter: TelemetryReporter
-	) { }
+		webviewManager: MarkdownPreviewManager,
+		telemetryReporter: TelemetryReporter
+	) {
+		this.#webviewManager = webviewManager;
+		this.#telemetryReporter = telemetryReporter;
+	}
 
 	public execute(uri?: vscode.Uri, previewSettings?: DynamicPreviewSettings) {
-		showPreview(this._webviewManager, this._telemetryReporter, uri, {
+		showPreview(this.#webviewManager, this.#telemetryReporter, uri, {
 			sideBySide: true,
 			locked: previewSettings?.locked
 		});
@@ -88,13 +100,19 @@ export class ShowPreviewToSideCommand implements Command {
 export class ShowLockedPreviewToSideCommand implements Command {
 	public readonly id = 'markdown.showLockedPreviewToSide';
 
+	readonly #webviewManager: MarkdownPreviewManager;
+	readonly #telemetryReporter: TelemetryReporter;
+
 	public constructor(
-		private readonly _webviewManager: MarkdownPreviewManager,
-		private readonly _telemetryReporter: TelemetryReporter
-	) { }
+		webviewManager: MarkdownPreviewManager,
+		telemetryReporter: TelemetryReporter
+	) {
+		this.#webviewManager = webviewManager;
+		this.#telemetryReporter = telemetryReporter;
+	}
 
 	public execute(uri?: vscode.Uri) {
-		showPreview(this._webviewManager, this._telemetryReporter, uri, {
+		showPreview(this.#webviewManager, this.#telemetryReporter, uri, {
 			sideBySide: true,
 			locked: true
 		});
diff --git a/extensions/markdown-language-features/src/commands/showPreviewSecuritySelector.ts b/extensions/markdown-language-features/src/commands/showPreviewSecuritySelector.ts
index 7ea5a4079ed..fb6cd9ce9e7 100644
--- a/extensions/markdown-language-features/src/commands/showPreviewSecuritySelector.ts
+++ b/extensions/markdown-language-features/src/commands/showPreviewSecuritySelector.ts
@@ -12,19 +12,25 @@ import { isMarkdownFile } from '../util/file';
 export class ShowPreviewSecuritySelectorCommand implements Command {
 	public readonly id = 'markdown.showPreviewSecuritySelector';
 
+	readonly #previewSecuritySelector: PreviewSecuritySelector;
+	readonly #previewManager: MarkdownPreviewManager;
+
 	public constructor(
-		private readonly _previewSecuritySelector: PreviewSecuritySelector,
-		private readonly _previewManager: MarkdownPreviewManager
-	) { }
+		previewSecuritySelector: PreviewSecuritySelector,
+		previewManager: MarkdownPreviewManager
+	) {
+		this.#previewSecuritySelector = previewSecuritySelector;
+		this.#previewManager = previewManager;
+	}
 
 	public execute(resource: string | undefined) {
-		if (this._previewManager.activePreviewResource) {
-			this._previewSecuritySelector.showSecuritySelectorForResource(this._previewManager.activePreviewResource);
+		if (this.#previewManager.activePreviewResource) {
+			this.#previewSecuritySelector.showSecuritySelectorForResource(this.#previewManager.activePreviewResource);
 		} else if (resource) {
 			const source = vscode.Uri.parse(resource);
-			this._previewSecuritySelector.showSecuritySelectorForResource(source.query ? vscode.Uri.parse(source.query) : source);
+			this.#previewSecuritySelector.showSecuritySelectorForResource(source.query ? vscode.Uri.parse(source.query) : source);
 		} else if (vscode.window.activeTextEditor && isMarkdownFile(vscode.window.activeTextEditor.document)) {
-			this._previewSecuritySelector.showSecuritySelectorForResource(vscode.window.activeTextEditor.document.uri);
+			this.#previewSecuritySelector.showSecuritySelectorForResource(vscode.window.activeTextEditor.document.uri);
 		}
 	}
 }
diff --git a/extensions/markdown-language-features/src/commands/showSource.ts b/extensions/markdown-language-features/src/commands/showSource.ts
index 87d6b21ec68..3a6bb3e0e20 100644
--- a/extensions/markdown-language-features/src/commands/showSource.ts
+++ b/extensions/markdown-language-features/src/commands/showSource.ts
@@ -10,12 +10,16 @@ import { MarkdownPreviewManager } from '../preview/previewManager';
 export class ShowSourceCommand implements Command {
 	public readonly id = 'markdown.showSource';
 
+	readonly #previewManager: MarkdownPreviewManager;
+
 	public constructor(
-		private readonly _previewManager: MarkdownPreviewManager
-	) { }
+		previewManager: MarkdownPreviewManager
+	) {
+		this.#previewManager = previewManager;
+	}
 
 	public execute() {
-		const { activePreviewResource, activePreviewResourceColumn } = this._previewManager;
+		const { activePreviewResource, activePreviewResourceColumn } = this.#previewManager;
 		if (activePreviewResource && activePreviewResourceColumn) {
 			return vscode.workspace.openTextDocument(activePreviewResource).then(document => {
 				return vscode.window.showTextDocument(document, activePreviewResourceColumn);
diff --git a/extensions/markdown-language-features/src/commands/toggleLock.ts b/extensions/markdown-language-features/src/commands/toggleLock.ts
index 9975d4872bb..0bc4656d08f 100644
--- a/extensions/markdown-language-features/src/commands/toggleLock.ts
+++ b/extensions/markdown-language-features/src/commands/toggleLock.ts
@@ -9,11 +9,15 @@ import { MarkdownPreviewManager } from '../preview/previewManager';
 export class ToggleLockCommand implements Command {
 	public readonly id = 'markdown.preview.toggleLock';
 
+	readonly #previewManager: MarkdownPreviewManager;
+
 	public constructor(
-		private readonly _previewManager: MarkdownPreviewManager
-	) { }
+		previewManager: MarkdownPreviewManager
+	) {
+		this.#previewManager = previewManager;
+	}
 
 	public execute() {
-		this._previewManager.toggleLock();
+		this.#previewManager.toggleLock();
 	}
 }
diff --git a/extensions/markdown-language-features/src/languageFeatures/copyFiles/dropOrPasteResource.ts b/extensions/markdown-language-features/src/languageFeatures/copyFiles/dropOrPasteResource.ts
index 7791d6b19e4..e59a207487d 100644
--- a/extensions/markdown-language-features/src/languageFeatures/copyFiles/dropOrPasteResource.ts
+++ b/extensions/markdown-language-features/src/languageFeatures/copyFiles/dropOrPasteResource.ts
@@ -36,14 +36,18 @@ class ResourcePasteOrDropProvider implements vscode.DocumentPasteEditProvider, v
 		...Object.values(rootMediaMimesTypes).map(type => `${type}/*`),
 	];
 
-	private readonly _yieldTo = [
+	readonly #yieldTo = [
 		vscode.DocumentDropOrPasteEditKind.Text,
 		vscode.DocumentDropOrPasteEditKind.Empty.append('markdown', 'link', 'image', 'attachment'), // Prefer notebook attachments
 	];
 
+	readonly #parser: IMdParser;
+
 	constructor(
-		private readonly _parser: IMdParser,
-	) { }
+		parser: IMdParser,
+	) {
+		this.#parser = parser;
+	}
 
 	public async provideDocumentDropEdits(
 		document: vscode.TextDocument,
@@ -51,8 +55,8 @@ class ResourcePasteOrDropProvider implements vscode.DocumentPasteEditProvider, v
 		dataTransfer: vscode.DataTransfer,
 		token: vscode.CancellationToken,
 	): Promise<vscode.DocumentDropEdit | undefined> {
-		const edit = await this._createEdit(document, [new vscode.Range(position, position)], dataTransfer, {
-			insert: this._getEnabled(document, 'editor.drop.enabled'),
+		const edit = await this.#createEdit(document, [new vscode.Range(position, position)], dataTransfer, {
+			insert: this.#getEnabled(document, 'editor.drop.enabled'),
 			copyIntoWorkspace: vscode.workspace.getConfiguration('markdown', document).get<CopyFilesSettings>('editor.drop.copyIntoWorkspace', CopyFilesSettings.MediaFiles)
 		}, undefined, token);
 
@@ -64,7 +68,7 @@ class ResourcePasteOrDropProvider implements vscode.DocumentPasteEditProvider, v
 		dropEdit.title = edit.label;
 		dropEdit.kind = edit.kind;
 		dropEdit.additionalEdit = edit.additionalEdits;
-		dropEdit.yieldTo = [...this._yieldTo, ...edit.yieldTo];
+		dropEdit.yieldTo = [...this.#yieldTo, ...edit.yieldTo];
 		return dropEdit;
 	}
 
@@ -75,8 +79,8 @@ class ResourcePasteOrDropProvider implements vscode.DocumentPasteEditProvider, v
 		context: vscode.DocumentPasteEditContext,
 		token: vscode.CancellationToken,
 	): Promise<vscode.DocumentPasteEdit[] | undefined> {
-		const edit = await this._createEdit(document, ranges, dataTransfer, {
-			insert: this._getEnabled(document, 'editor.paste.enabled'),
+		const edit = await this.#createEdit(document, ranges, dataTransfer, {
+			insert: this.#getEnabled(document, 'editor.paste.enabled'),
 			copyIntoWorkspace: vscode.workspace.getConfiguration('markdown', document).get<CopyFilesSettings>('editor.paste.copyIntoWorkspace', CopyFilesSettings.MediaFiles)
 		}, context, token);
 
@@ -86,11 +90,11 @@ class ResourcePasteOrDropProvider implements vscode.DocumentPasteEditProvider, v
 
 		const pasteEdit = new vscode.DocumentPasteEdit(edit.snippet, edit.label, edit.kind);
 		pasteEdit.additionalEdit = edit.additionalEdits;
-		pasteEdit.yieldTo = [...this._yieldTo, ...edit.yieldTo];
+		pasteEdit.yieldTo = [...this.#yieldTo, ...edit.yieldTo];
 		return [pasteEdit];
 	}
 
-	private _getEnabled(document: vscode.TextDocument, settingName: string): InsertMarkdownLink {
+	#getEnabled(document: vscode.TextDocument, settingName: string): InsertMarkdownLink {
 		const setting = vscode.workspace.getConfiguration('markdown', document).get<boolean | InsertMarkdownLink>(settingName, true);
 		// Convert old boolean values to new enum setting
 		if (setting === false) {
@@ -102,7 +106,7 @@ class ResourcePasteOrDropProvider implements vscode.DocumentPasteEditProvider, v
 		}
 	}
 
-	private async _createEdit(
+	async #createEdit(
 		document: vscode.TextDocument,
 		ranges: readonly vscode.Range[],
 		dataTransfer: vscode.DataTransfer,
@@ -117,27 +121,27 @@ class ResourcePasteOrDropProvider implements vscode.DocumentPasteEditProvider, v
 			return;
 		}
 
-		let edit = await this._createEditForMediaFiles(document, dataTransfer, settings.copyIntoWorkspace, token);
+		let edit = await this.#createEditForMediaFiles(document, dataTransfer, settings.copyIntoWorkspace, token);
 		if (token.isCancellationRequested) {
 			return;
 		}
 
 		if (!edit) {
-			edit = await this._createEditFromUriListData(document, ranges, dataTransfer, context, token);
+			edit = await this.#createEditFromUriListData(document, ranges, dataTransfer, context, token);
 		}
 
 		if (!edit || token.isCancellationRequested) {
 			return;
 		}
 
-		if (!(await shouldInsertMarkdownLinkByDefault(this._parser, document, settings.insert, ranges, token))) {
+		if (!(await shouldInsertMarkdownLinkByDefault(this.#parser, document, settings.insert, ranges, token))) {
 			edit.yieldTo.push(vscode.DocumentDropOrPasteEditKind.Empty.append('uri'));
 		}
 
 		return edit;
 	}
 
-	private async _createEditFromUriListData(
+	async #createEditFromUriListData(
 		document: vscode.TextDocument,
 		ranges: readonly vscode.Range[],
 		dataTransfer: vscode.DataTransfer,
@@ -194,7 +198,7 @@ class ResourcePasteOrDropProvider implements vscode.DocumentPasteEditProvider, v
 	 *
 	 * This tries copying files outside of the workspace into the workspace.
 	 */
-	private async _createEditForMediaFiles(
+	async #createEditForMediaFiles(
 		document: vscode.TextDocument,
 		dataTransfer: vscode.DataTransfer,
 		copyIntoWorkspace: CopyFilesSettings,
diff --git a/extensions/markdown-language-features/src/languageFeatures/copyFiles/newFilePathGenerator.ts b/extensions/markdown-language-features/src/languageFeatures/copyFiles/newFilePathGenerator.ts
index 1625977a72c..fe9030704c1 100644
--- a/extensions/markdown-language-features/src/languageFeatures/copyFiles/newFilePathGenerator.ts
+++ b/extensions/markdown-language-features/src/languageFeatures/copyFiles/newFilePathGenerator.ts
@@ -12,7 +12,7 @@ import { CopyFileConfiguration, getCopyFileConfiguration, parseGlob, resolveCopy
 
 export class NewFilePathGenerator {
 
-	private readonly _usedPaths = new Set<string>();
+	readonly #usedPaths = new Set<string>();
 
 	async getNewFilePath(
 		document: vscode.TextDocument,
@@ -33,13 +33,13 @@ export class NewFilePathGenerator {
 
 			const name = i === 0 ? baseName : `${baseName}-${i}`;
 			const uri = vscode.Uri.joinPath(root, name + ext);
-			if (this._wasPathAlreadyUsed(uri)) {
+			if (this.#wasPathAlreadyUsed(uri)) {
 				continue;
 			}
 
 			// Try overwriting if it already exists
 			if (config.overwriteBehavior === 'overwrite') {
-				this._usedPaths.add(uri.toString());
+				this.#usedPaths.add(uri.toString());
 				return { uri, overwrite: true };
 			}
 
@@ -47,17 +47,17 @@ export class NewFilePathGenerator {
 			try {
 				await vscode.workspace.fs.stat(uri);
 			} catch {
-				if (!this._wasPathAlreadyUsed(uri)) {
+				if (!this.#wasPathAlreadyUsed(uri)) {
 					// Does not exist
-					this._usedPaths.add(uri.toString());
+					this.#usedPaths.add(uri.toString());
 					return { uri, overwrite: false };
 				}
 			}
 		}
 	}
 
-	private _wasPathAlreadyUsed(uri: vscode.Uri) {
-		return this._usedPaths.has(uri.toString());
+	#wasPathAlreadyUsed(uri: vscode.Uri) {
+		return this.#usedPaths.has(uri.toString());
 	}
 }
 
diff --git a/extensions/markdown-language-features/src/languageFeatures/copyFiles/pasteUrlProvider.ts b/extensions/markdown-language-features/src/languageFeatures/copyFiles/pasteUrlProvider.ts
index a947216fe32..faad54e10c3 100644
--- a/extensions/markdown-language-features/src/languageFeatures/copyFiles/pasteUrlProvider.ts
+++ b/extensions/markdown-language-features/src/languageFeatures/copyFiles/pasteUrlProvider.ts
@@ -21,9 +21,13 @@ class PasteUrlEditProvider implements vscode.DocumentPasteEditProvider {
 
 	public static readonly pasteMimeTypes = [Mime.textPlain];
 
+	readonly #parser: IMdParser;
+
 	constructor(
-		private readonly _parser: IMdParser,
-	) { }
+		parser: IMdParser,
+	) {
+		this.#parser = parser;
+	}
 
 	async provideDocumentPasteEdits(
 		document: vscode.TextDocument,
@@ -64,7 +68,7 @@ class PasteUrlEditProvider implements vscode.DocumentPasteEditProvider {
 		workspaceEdit.set(document.uri, edit.edits);
 		pasteEdit.additionalEdit = workspaceEdit;
 
-		if (!(await shouldInsertMarkdownLinkByDefault(this._parser, document, pasteUrlSetting, ranges, token))) {
+		if (!(await shouldInsertMarkdownLinkByDefault(this.#parser, document, pasteUrlSetting, ranges, token))) {
 			pasteEdit.yieldTo = [
 				vscode.DocumentDropOrPasteEditKind.Text,
 				vscode.DocumentDropOrPasteEditKind.Empty.append('uri')
diff --git a/extensions/markdown-language-features/src/languageFeatures/diagnostics.ts b/extensions/markdown-language-features/src/languageFeatures/diagnostics.ts
index 8df16f4dcc6..871333cf4a4 100644
--- a/extensions/markdown-language-features/src/languageFeatures/diagnostics.ts
+++ b/extensions/markdown-language-features/src/languageFeatures/diagnostics.ts
@@ -19,18 +19,18 @@ export enum DiagnosticCode {
 
 class AddToIgnoreLinksQuickFixProvider implements vscode.CodeActionProvider {
 
-	private static readonly _addToIgnoreLinksCommandId = '_markdown.addToIgnoreLinks';
+	static readonly #addToIgnoreLinksCommandId = '_markdown.addToIgnoreLinks';
 
-	private static readonly _metadata: vscode.CodeActionProviderMetadata = {
+	static readonly #metadata: vscode.CodeActionProviderMetadata = {
 		providedCodeActionKinds: [
 			vscode.CodeActionKind.QuickFix
 		],
 	};
 
 	public static register(selector: vscode.DocumentSelector, commandManager: CommandManager): vscode.Disposable {
-		const reg = vscode.languages.registerCodeActionsProvider(selector, new AddToIgnoreLinksQuickFixProvider(), AddToIgnoreLinksQuickFixProvider._metadata);
+		const reg = vscode.languages.registerCodeActionsProvider(selector, new AddToIgnoreLinksQuickFixProvider(), AddToIgnoreLinksQuickFixProvider.#metadata);
 		const commandReg = commandManager.register({
-			id: AddToIgnoreLinksQuickFixProvider._addToIgnoreLinksCommandId,
+			id: AddToIgnoreLinksQuickFixProvider.#addToIgnoreLinksCommandId,
 			execute(resource: vscode.Uri, path: string) {
 				const settingId = 'validate.ignoredLinks';
 				const config = vscode.workspace.getConfiguration('markdown', resource);
@@ -58,7 +58,7 @@ class AddToIgnoreLinksQuickFixProvider implements vscode.CodeActionProvider {
 							vscode.CodeActionKind.QuickFix);
 
 						fix.command = {
-							command: AddToIgnoreLinksQuickFixProvider._addToIgnoreLinksCommandId,
+							command: AddToIgnoreLinksQuickFixProvider.#addToIgnoreLinksCommandId,
 							title: '',
 							arguments: [document.uri, hrefText],
 						};
diff --git a/extensions/markdown-language-features/src/languageFeatures/fileReferences.ts b/extensions/markdown-language-features/src/languageFeatures/fileReferences.ts
index bda8b721e8b..23a2ed9e770 100644
--- a/extensions/markdown-language-features/src/languageFeatures/fileReferences.ts
+++ b/extensions/markdown-language-features/src/languageFeatures/fileReferences.ts
@@ -13,9 +13,13 @@ export class FindFileReferencesCommand implements Command {
 
 	public readonly id = 'markdown.findAllFileReferences';
 
+	readonly #client: MdLanguageClient;
+
 	constructor(
-		private readonly _client: MdLanguageClient,
-	) { }
+		client: MdLanguageClient,
+	) {
+		this.#client = client;
+	}
 
 	public async execute(resource?: vscode.Uri) {
 		resource ??= vscode.window.activeTextEditor?.document.uri;
@@ -28,7 +32,7 @@ export class FindFileReferencesCommand implements Command {
 			location: vscode.ProgressLocation.Window,
 			title: vscode.l10n.t("Finding file references")
 		}, async (_progress, token) => {
-			const locations = (await this._client.getReferencesToFileInWorkspace(resource, token)).map(loc => {
+			const locations = (await this.#client.getReferencesToFileInWorkspace(resource, token)).map(loc => {
 				return new vscode.Location(vscode.Uri.parse(loc.uri), convertRange(loc.range));
 			});
 
diff --git a/extensions/markdown-language-features/src/languageFeatures/linkUpdater.ts b/extensions/markdown-language-features/src/languageFeatures/linkUpdater.ts
index 5d42a033842..d912caa9060 100644
--- a/extensions/markdown-language-features/src/languageFeatures/linkUpdater.ts
+++ b/extensions/markdown-language-features/src/languageFeatures/linkUpdater.ts
@@ -33,46 +33,48 @@ interface RenameAction {
 
 class UpdateLinksOnFileRenameHandler extends Disposable {
 
-	private readonly _delayer = new Delayer(50);
-	private readonly _pendingRenames = new Set<RenameAction>();
+	readonly #delayer = new Delayer(50);
+	readonly #pendingRenames = new Set<RenameAction>();
+	readonly #client: MdLanguageClient;
 
 	public constructor(
-		private readonly _client: MdLanguageClient,
+		client: MdLanguageClient,
 	) {
 		super();
+		this.#client = client;
 
 		this._register(vscode.workspace.onDidRenameFiles(async (e) => {
 			await Promise.all(e.files.map(async (rename) => {
-				if (await this._shouldParticipateInLinkUpdate(rename.newUri)) {
-					this._pendingRenames.add(rename);
+				if (await this.#shouldParticipateInLinkUpdate(rename.newUri)) {
+					this.#pendingRenames.add(rename);
 				}
 			}));
 
-			if (this._pendingRenames.size) {
-				this._delayer.trigger(() => {
+			if (this.#pendingRenames.size) {
+				this.#delayer.trigger(() => {
 					vscode.window.withProgress({
 						location: vscode.ProgressLocation.Window,
 						title: vscode.l10n.t("Checking for Markdown links to update")
-					}, () => this._flushRenames());
+					}, () => this.#flushRenames());
 				});
 			}
 		}));
 	}
 
-	private async _flushRenames(): Promise<void> {
-		const renames = Array.from(this._pendingRenames);
-		this._pendingRenames.clear();
+	async #flushRenames(): Promise<void> {
+		const renames = Array.from(this.#pendingRenames);
+		this.#pendingRenames.clear();
 
-		const result = await this._getEditsForFileRename(renames, noopToken);
+		const result = await this.#getEditsForFileRename(renames, noopToken);
 
 		if (result?.edit.size) {
-			if (await this._confirmActionWithUser(result.resourcesBeingRenamed)) {
+			if (await this.#confirmActionWithUser(result.resourcesBeingRenamed)) {
 				await vscode.workspace.applyEdit(result.edit);
 			}
 		}
 	}
 
-	private async _confirmActionWithUser(newResources: readonly vscode.Uri[]): Promise<boolean> {
+	async #confirmActionWithUser(newResources: readonly vscode.Uri[]): Promise<boolean> {
 		if (!newResources.length) {
 			return false;
 		}
@@ -81,7 +83,7 @@ class UpdateLinksOnFileRenameHandler extends Disposable {
 		const setting = config.get<UpdateLinksOnFileMoveSetting>(settingNames.enabled);
 		switch (setting) {
 			case UpdateLinksOnFileMoveSetting.Prompt:
-				return this._promptUser(newResources);
+				return this.#promptUser(newResources);
 			case UpdateLinksOnFileMoveSetting.Always:
 				return true;
 			case UpdateLinksOnFileMoveSetting.Never:
@@ -89,7 +91,7 @@ class UpdateLinksOnFileRenameHandler extends Disposable {
 				return false;
 		}
 	}
-	private async _shouldParticipateInLinkUpdate(newUri: vscode.Uri): Promise<boolean> {
+	async #shouldParticipateInLinkUpdate(newUri: vscode.Uri): Promise<boolean> {
 		const config = vscode.workspace.getConfiguration('markdown', newUri);
 		const setting = config.get<UpdateLinksOnFileMoveSetting>(settingNames.enabled);
 		if (setting === UpdateLinksOnFileMoveSetting.Never) {
@@ -113,7 +115,7 @@ class UpdateLinksOnFileRenameHandler extends Disposable {
 		return false;
 	}
 
-	private async _promptUser(newResources: readonly vscode.Uri[]): Promise<boolean> {
+	async #promptUser(newResources: readonly vscode.Uri[]): Promise<boolean> {
 		if (!newResources.length) {
 			return false;
 		}
@@ -138,7 +140,7 @@ class UpdateLinksOnFileRenameHandler extends Disposable {
 		const choice = await vscode.window.showInformationMessage(
 			newResources.length === 1
 				? vscode.l10n.t("Update Markdown links for '{0}'?", Utils.basename(newResources[0]))
-				: this._getConfirmMessage(vscode.l10n.t("Update Markdown links for the following {0} files?", newResources.length), newResources), {
+				: this.#getConfirmMessage(vscode.l10n.t("Update Markdown links for the following {0} files?", newResources.length), newResources), {
 			modal: true,
 		}, rejectItem, acceptItem, alwaysItem, neverItem);
 
@@ -154,7 +156,7 @@ class UpdateLinksOnFileRenameHandler extends Disposable {
 				config.update(
 					settingNames.enabled,
 					UpdateLinksOnFileMoveSetting.Always,
-					this._getConfigTargetScope(config, settingNames.enabled));
+					this.#getConfigTargetScope(config, settingNames.enabled));
 				return true;
 			}
 			case neverItem: {
@@ -162,7 +164,7 @@ class UpdateLinksOnFileRenameHandler extends Disposable {
 				config.update(
 					settingNames.enabled,
 					UpdateLinksOnFileMoveSetting.Never,
-					this._getConfigTargetScope(config, settingNames.enabled));
+					this.#getConfigTargetScope(config, settingNames.enabled));
 				return false;
 			}
 			default: {
@@ -171,8 +173,8 @@ class UpdateLinksOnFileRenameHandler extends Disposable {
 		}
 	}
 
-	private async _getEditsForFileRename(renames: readonly RenameAction[], token: vscode.CancellationToken): Promise<{ edit: vscode.WorkspaceEdit; resourcesBeingRenamed: vscode.Uri[] } | undefined> {
-		const result = await this._client.getEditForFileRenames(renames.map(rename => ({ oldUri: rename.oldUri.toString(), newUri: rename.newUri.toString() })), token);
+	async #getEditsForFileRename(renames: readonly RenameAction[], token: vscode.CancellationToken): Promise<{ edit: vscode.WorkspaceEdit; resourcesBeingRenamed: vscode.Uri[] } | undefined> {
+		const result = await this.#client.getEditForFileRenames(renames.map(rename => ({ oldUri: rename.oldUri.toString(), newUri: rename.newUri.toString() })), token);
 		if (!result?.edit.documentChanges?.length) {
 			return undefined;
 		}
@@ -192,7 +194,7 @@ class UpdateLinksOnFileRenameHandler extends Disposable {
 		};
 	}
 
-	private _getConfirmMessage(start: string, resourcesToConfirm: readonly vscode.Uri[]): string {
+	#getConfirmMessage(start: string, resourcesToConfirm: readonly vscode.Uri[]): string {
 		const MAX_CONFIRM_FILES = 10;
 
 		const paths = [start];
@@ -211,7 +213,7 @@ class UpdateLinksOnFileRenameHandler extends Disposable {
 		return paths.join('\n');
 	}
 
-	private _getConfigTargetScope(config: vscode.WorkspaceConfiguration, settingsName: string): vscode.ConfigurationTarget {
+	#getConfigTargetScope(config: vscode.WorkspaceConfiguration, settingsName: string): vscode.ConfigurationTarget {
 		const inspected = config.inspect(settingsName);
 		if (inspected?.workspaceFolderValue) {
 			return vscode.ConfigurationTarget.WorkspaceFolder;
diff --git a/extensions/markdown-language-features/src/languageFeatures/updateLinksOnPaste.ts b/extensions/markdown-language-features/src/languageFeatures/updateLinksOnPaste.ts
index f8a7128eb05..b27a869db0e 100644
--- a/extensions/markdown-language-features/src/languageFeatures/updateLinksOnPaste.ts
+++ b/extensions/markdown-language-features/src/languageFeatures/updateLinksOnPaste.ts
@@ -13,16 +13,20 @@ class UpdatePastedLinksEditProvider implements vscode.DocumentPasteEditProvider
 
 	public static readonly metadataMime = 'application/vnd.vscode.markdown.updatelinks.metadata';
 
+	readonly #client: MdLanguageClient;
+
 	constructor(
-		private readonly _client: MdLanguageClient,
-	) { }
+		client: MdLanguageClient,
+	) {
+		this.#client = client;
+	}
 
 	async prepareDocumentPaste(document: vscode.TextDocument, ranges: readonly vscode.Range[], dataTransfer: vscode.DataTransfer, token: vscode.CancellationToken): Promise<void> {
-		if (!this._isEnabled(document)) {
+		if (!this.#isEnabled(document)) {
 			return;
 		}
 
-		const metadata = await this._client.prepareUpdatePastedLinks(document.uri, ranges, token);
+		const metadata = await this.#client.prepareUpdatePastedLinks(document.uri, ranges, token);
 		if (token.isCancellationRequested) {
 			return;
 		}
@@ -37,7 +41,7 @@ class UpdatePastedLinksEditProvider implements vscode.DocumentPasteEditProvider
 		context: vscode.DocumentPasteEditContext,
 		token: vscode.CancellationToken,
 	): Promise<vscode.DocumentPasteEdit[] | undefined> {
-		if (!this._isEnabled(document)) {
+		if (!this.#isEnabled(document)) {
 			return;
 		}
 
@@ -56,7 +60,7 @@ class UpdatePastedLinksEditProvider implements vscode.DocumentPasteEditProvider
 		// - copy empty line
 		// - Copy with multiple cursors and paste into multiple locations
 		// - ...
-		const edits = await this._client.getUpdatePastedLinksEdit(document.uri, ranges.map(x => new vscode.TextEdit(x, text)), metadata, token);
+		const edits = await this.#client.getUpdatePastedLinksEdit(document.uri, ranges.map(x => new vscode.TextEdit(x, text)), metadata, token);
 		if (!edits?.length || token.isCancellationRequested) {
 			return;
 		}
@@ -73,7 +77,7 @@ class UpdatePastedLinksEditProvider implements vscode.DocumentPasteEditProvider
 		return [pasteEdit];
 	}
 
-	private _isEnabled(document: vscode.TextDocument): boolean {
+	#isEnabled(document: vscode.TextDocument): boolean {
 		return vscode.workspace.getConfiguration('markdown', document.uri).get<boolean>('editor.updateLinksOnPaste.enabled', true);
 	}
 }
diff --git a/extensions/markdown-language-features/src/logging.ts b/extensions/markdown-language-features/src/logging.ts
index b5ea76f3608..30839d8c756 100644
--- a/extensions/markdown-language-features/src/logging.ts
+++ b/extensions/markdown-language-features/src/logging.ts
@@ -12,11 +12,11 @@ export interface ILogger {
 }
 
 export class VsCodeOutputLogger extends Disposable implements ILogger {
-	private _outputChannelValue?: vscode.LogOutputChannel;
+	#outputChannelValue?: vscode.LogOutputChannel;
 
-	private get _outputChannel() {
-		this._outputChannelValue ??= this._register(vscode.window.createOutputChannel('Markdown', { log: true }));
-		return this._outputChannelValue;
+	get #outputChannel() {
+		this.#outputChannelValue ??= this._register(vscode.window.createOutputChannel('Markdown', { log: true }));
+		return this.#outputChannelValue;
 	}
 
 	constructor() {
@@ -24,6 +24,6 @@ export class VsCodeOutputLogger extends Disposable implements ILogger {
 	}
 
 	public trace(title: string, message: string, data?: any): void {
-		this._outputChannel.trace(`${title}: ${message}`, ...(data ? [JSON.stringify(data, null, 4)] : []));
+		this.#outputChannel.trace(`${title}: ${message}`, ...(data ? [JSON.stringify(data, null, 4)] : []));
 	}
 }
diff --git a/extensions/markdown-language-features/src/markdownEngine.ts b/extensions/markdown-language-features/src/markdownEngine.ts
index 0f4c7eb6717..4ed3186c380 100644
--- a/extensions/markdown-language-features/src/markdownEngine.ts
+++ b/extensions/markdown-language-features/src/markdownEngine.ts
@@ -44,37 +44,37 @@ const pluginSourceMap: MarkdownIt.PluginSimple = (md): void => {
 type MarkdownItConfig = Readonly<Required<Pick<MarkdownIt.Options, 'breaks' | 'linkify' | 'typographer'>>>;
 
 class TokenCache {
-	private _cachedDocument?: {
+	#cachedDocument?: {
 		readonly uri: vscode.Uri;
 		readonly version: number;
 		readonly config: MarkdownItConfig;
 	};
-	private _tokens?: MarkdownIt.Token[];
+	#tokens?: MarkdownIt.Token[];
 
 	public tryGetCached(document: ITextDocument, config: MarkdownItConfig): MarkdownIt.Token[] | undefined {
-		if (this._cachedDocument
-			&& this._cachedDocument.uri.toString() === document.uri.toString()
-			&& document.version >= 0 && this._cachedDocument.version === document.version
-			&& this._cachedDocument.config.breaks === config.breaks
-			&& this._cachedDocument.config.linkify === config.linkify
+		if (this.#cachedDocument
+			&& this.#cachedDocument.uri.toString() === document.uri.toString()
+			&& document.version >= 0 && this.#cachedDocument.version === document.version
+			&& this.#cachedDocument.config.breaks === config.breaks
+			&& this.#cachedDocument.config.linkify === config.linkify
 		) {
-			return this._tokens;
+			return this.#tokens;
 		}
 		return undefined;
 	}
 
 	public update(document: ITextDocument, config: MarkdownItConfig, tokens: MarkdownIt.Token[]) {
-		this._cachedDocument = {
+		this.#cachedDocument = {
 			uri: document.uri,
 			version: document.version,
 			config,
 		};
-		this._tokens = tokens;
+		this.#tokens = tokens;
 	}
 
 	public clean(): void {
-		this._cachedDocument = undefined;
-		this._tokens = undefined;
+		this.#cachedDocument = undefined;
+		this.#tokens = undefined;
 	}
 }
 
@@ -98,40 +98,45 @@ export interface IMdParser {
 
 export class MarkdownItEngine implements IMdParser {
 
-	private _md?: Promise<MarkdownIt>;
+	#md?: Promise<MarkdownIt>;
 
-	private readonly _tokenCache = new TokenCache();
+	readonly #tokenCache = new TokenCache();
 
 	public readonly slugifier: ISlugifier;
 
-	public constructor(
-		private readonly _contributionProvider: MarkdownContributionProvider,
-		slugifier: ISlugifier,
-		private readonly _logger: ILogger,
-	) {
-		this.slugifier = slugifier;
+	readonly #contributionProvider: MarkdownContributionProvider;
+	readonly #logger: ILogger;
 
-		_contributionProvider.onContributionsChanged(() => {
+	public constructor(
+		contributionProvider: MarkdownContributionProvider,
+		slugifier: ISlugifier,
+		logger: ILogger,
+	) {
+		this.#contributionProvider = contributionProvider;
+		this.slugifier = slugifier;
+		this.#logger = logger;
+
+		contributionProvider.onContributionsChanged(() => {
 			// Markdown plugin contributions may have changed
-			this._md = undefined;
-			this._tokenCache.clean();
+			this.#md = undefined;
+			this.#tokenCache.clean();
 		});
 	}
 
 
 	public async getEngine(resource: vscode.Uri | undefined): Promise<MarkdownIt> {
-		const config = this._getConfig(resource);
-		return this._getEngine(config);
+		const config = this.#getConfig(resource);
+		return this.#getEngine(config);
 	}
 
-	private async _getEngine(config: MarkdownItConfig): Promise<MarkdownIt> {
-		if (!this._md) {
-			this._md = (async () => {
+	async #getEngine(config: MarkdownItConfig): Promise<MarkdownIt> {
+		if (!this.#md) {
+			this.#md = (async () => {
 				const markdownIt = await import('markdown-it');
 				let md: MarkdownIt = markdownIt.default(await getMarkdownOptions(() => md));
 				md.linkify.set({ fuzzyLink: false });
 
-				for (const plugin of this._contributionProvider.contributions.markdownItPlugins.values()) {
+				for (const plugin of this.#contributionProvider.contributions.markdownItPlugins.values()) {
 					try {
 						md = (await plugin)(md);
 					} catch (e) {
@@ -154,43 +159,43 @@ export class MarkdownItEngine implements IMdParser {
 					alt: ['paragraph', 'reference', 'blockquote', 'list']
 				});
 
-				this._addImageRenderer(md);
-				this._addFencedRenderer(md);
-				this._addLinkNormalizer(md);
-				this._addLinkValidator(md);
-				this._addNamedHeaders(md);
-				this._addLinkRenderer(md);
+				this.#addImageRenderer(md);
+				this.#addFencedRenderer(md);
+				this.#addLinkNormalizer(md);
+				this.#addLinkValidator(md);
+				this.#addNamedHeaders(md);
+				this.#addLinkRenderer(md);
 				md.use(pluginSourceMap);
 				return md;
 			})();
 		}
 
-		const md = await this._md!;
+		const md = await this.#md!;
 		md.set(config);
 		return md;
 	}
 
 	public reloadPlugins() {
-		this._md = undefined;
+		this.#md = undefined;
 	}
 
-	private _tokenizeDocument(
+	#tokenizeDocument(
 		document: ITextDocument,
 		config: MarkdownItConfig,
 		engine: MarkdownIt
 	): MarkdownIt.Token[] {
-		const cached = this._tokenCache.tryGetCached(document, config);
+		const cached = this.#tokenCache.tryGetCached(document, config);
 		if (cached) {
 			return cached;
 		}
 
-		this._logger.trace('MarkdownItEngine', `tokenizeDocument - ${document.uri}`);
-		const tokens = this._tokenizeString(document.getText(), engine);
-		this._tokenCache.update(document, config, tokens);
+		this.#logger.trace('MarkdownItEngine', `tokenizeDocument - ${document.uri}`);
+		const tokens = this.#tokenizeString(document.getText(), engine);
+		this.#tokenCache.update(document, config, tokens);
 		return tokens;
 	}
 
-	private _tokenizeString(text: string, engine: MarkdownIt) {
+	#tokenizeString(text: string, engine: MarkdownIt) {
 		const env: RenderEnv = {
 			currentDocument: undefined,
 			containingImages: new Set<string>(),
@@ -201,12 +206,12 @@ export class MarkdownItEngine implements IMdParser {
 	}
 
 	public async render(input: ITextDocument | string, resourceProvider?: WebviewResourceProvider): Promise<RenderOutput> {
-		const config = this._getConfig(typeof input === 'string' ? undefined : input.uri);
-		const engine = await this._getEngine(config);
+		const config = this.#getConfig(typeof input === 'string' ? undefined : input.uri);
+		const engine = await this.#getEngine(config);
 
 		const tokens = typeof input === 'string'
-			? this._tokenizeString(input, engine)
-			: this._tokenizeDocument(input, config, engine);
+			? this.#tokenizeString(input, engine)
+			: this.#tokenizeDocument(input, config, engine);
 
 		const env: RenderEnv = {
 			containingImages: new Set<string>(),
@@ -227,16 +232,16 @@ export class MarkdownItEngine implements IMdParser {
 	}
 
 	public async tokenize(document: ITextDocument): Promise<MarkdownIt.Token[]> {
-		const config = this._getConfig(document.uri);
-		const engine = await this._getEngine(config);
-		return this._tokenizeDocument(document, config, engine);
+		const config = this.#getConfig(document.uri);
+		const engine = await this.#getEngine(config);
+		return this.#tokenizeDocument(document, config, engine);
 	}
 
 	public cleanCache(): void {
-		this._tokenCache.clean();
+		this.#tokenCache.clean();
 	}
 
-	private _getConfig(resource?: vscode.Uri): MarkdownItConfig {
+	#getConfig(resource?: vscode.Uri): MarkdownItConfig {
 		const config = MarkdownPreviewConfiguration.getForResource(resource ?? null);
 		return {
 			breaks: config.previewLineBreaks,
@@ -245,7 +250,7 @@ export class MarkdownItEngine implements IMdParser {
 		};
 	}
 
-	private _addImageRenderer(md: MarkdownIt): void {
+	#addImageRenderer(md: MarkdownIt): void {
 		const original = md.renderer.rules.image;
 		md.renderer.rules.image = (tokens: MarkdownIt.Token[], idx: number, options, env: RenderEnv, self) => {
 			const token = tokens[idx];
@@ -254,7 +259,7 @@ export class MarkdownItEngine implements IMdParser {
 				env.containingImages?.add(src);
 
 				if (!token.attrGet('data-src')) {
-					token.attrSet('src', this._toResourceUri(src, env.currentDocument, env.resourceProvider));
+					token.attrSet('src', this.#toResourceUri(src, env.currentDocument, env.resourceProvider));
 					token.attrSet('data-src', src);
 				}
 			}
@@ -267,7 +272,7 @@ export class MarkdownItEngine implements IMdParser {
 		};
 	}
 
-	private _addFencedRenderer(md: MarkdownIt): void {
+	#addFencedRenderer(md: MarkdownIt): void {
 		const original = md.renderer.rules['fenced'];
 		md.renderer.rules['fenced'] = (tokens: MarkdownIt.Token[], idx: number, options, env, self) => {
 			const token = tokens[idx];
@@ -283,7 +288,7 @@ export class MarkdownItEngine implements IMdParser {
 		};
 	}
 
-	private _addLinkNormalizer(md: MarkdownIt): void {
+	#addLinkNormalizer(md: MarkdownIt): void {
 		const normalizeLink = md.normalizeLink;
 		md.normalizeLink = (link: string) => {
 			try {
@@ -299,7 +304,7 @@ export class MarkdownItEngine implements IMdParser {
 		};
 	}
 
-	private _addLinkValidator(md: MarkdownIt): void {
+	#addLinkValidator(md: MarkdownIt): void {
 		const validateLink = md.validateLink;
 		md.validateLink = (link: string) => {
 			return validateLink(link)
@@ -309,10 +314,10 @@ export class MarkdownItEngine implements IMdParser {
 		};
 	}
 
-	private _addNamedHeaders(md: MarkdownIt): void {
+	#addNamedHeaders(md: MarkdownIt): void {
 		const original = md.renderer.rules.heading_open;
 		md.renderer.rules.heading_open = (tokens: MarkdownIt.Token[], idx: number, options, env: unknown, self) => {
-			const title = this._tokenToPlainText(tokens[idx + 1]);
+			const title = this.#tokenToPlainText(tokens[idx + 1]);
 			const slug = (env as RenderEnv).slugifier ? (env as RenderEnv).slugifier.add(title) : this.slugifier.fromHeading(title);
 			tokens[idx].attrSet('id', slug.value);
 
@@ -324,9 +329,9 @@ export class MarkdownItEngine implements IMdParser {
 		};
 	}
 
-	private _tokenToPlainText(token: MarkdownIt.Token): string {
+	#tokenToPlainText(token: MarkdownIt.Token): string {
 		if (token.children) {
-			return token.children.map(x => this._tokenToPlainText(x)).join('');
+			return token.children.map(x => this.#tokenToPlainText(x)).join('');
 		}
 
 		switch (token.type) {
@@ -339,7 +344,7 @@ export class MarkdownItEngine implements IMdParser {
 		}
 	}
 
-	private _addLinkRenderer(md: MarkdownIt): void {
+	#addLinkRenderer(md: MarkdownIt): void {
 		const original = md.renderer.rules.link_open;
 
 		md.renderer.rules.link_open = (tokens: MarkdownIt.Token[], idx: number, options, env, self) => {
@@ -357,7 +362,7 @@ export class MarkdownItEngine implements IMdParser {
 		};
 	}
 
-	private _toResourceUri(href: string, currentDocument: vscode.Uri | undefined, resourceProvider: WebviewResourceProvider | undefined): string {
+	#toResourceUri(href: string, currentDocument: vscode.Uri | undefined, resourceProvider: WebviewResourceProvider | undefined): string {
 		try {
 			// Support file:// links
 			if (isOfScheme(Schemes.file, href)) {
diff --git a/extensions/markdown-language-features/src/markdownExtensions.ts b/extensions/markdown-language-features/src/markdownExtensions.ts
index 1357b03d1de..568a0f0b638 100644
--- a/extensions/markdown-language-features/src/markdownExtensions.ts
+++ b/extensions/markdown-language-features/src/markdownExtensions.ts
@@ -119,36 +119,38 @@ export interface MarkdownContributionProvider {
 
 class VSCodeExtensionMarkdownContributionProvider extends Disposable implements MarkdownContributionProvider {
 
-	private _contributions?: MarkdownContributions;
+	#contributions?: MarkdownContributions;
+	readonly #extensionContext: vscode.ExtensionContext;
 
 	public constructor(
-		private readonly _extensionContext: vscode.ExtensionContext,
+		extensionContext: vscode.ExtensionContext,
 	) {
 		super();
+		this.#extensionContext = extensionContext;
 
 		this._register(vscode.extensions.onDidChange(() => {
-			const currentContributions = this._getCurrentContributions();
-			const existingContributions = this._contributions || MarkdownContributions.Empty;
+			const currentContributions = this.#getCurrentContributions();
+			const existingContributions = this.#contributions || MarkdownContributions.Empty;
 			if (!MarkdownContributions.equal(existingContributions, currentContributions)) {
-				this._contributions = currentContributions;
-				this._onContributionsChanged.fire(this);
+				this.#contributions = currentContributions;
+				this.#onContributionsChanged.fire(this);
 			}
 		}));
 	}
 
 	public get extensionUri() {
-		return this._extensionContext.extensionUri;
+		return this.#extensionContext.extensionUri;
 	}
 
-	private readonly _onContributionsChanged = this._register(new vscode.EventEmitter<this>());
-	public readonly onContributionsChanged = this._onContributionsChanged.event;
+	readonly #onContributionsChanged = this._register(new vscode.EventEmitter<this>());
+	public readonly onContributionsChanged = this.#onContributionsChanged.event;
 
 	public get contributions(): MarkdownContributions {
-		this._contributions ??= this._getCurrentContributions();
-		return this._contributions;
+		this.#contributions ??= this.#getCurrentContributions();
+		return this.#contributions;
 	}
 
-	private _getCurrentContributions(): MarkdownContributions {
+	#getCurrentContributions(): MarkdownContributions {
 		return vscode.extensions.all
 			.map(MarkdownContributions.fromExtension)
 			.reduce(MarkdownContributions.merge, MarkdownContributions.Empty);
diff --git a/extensions/markdown-language-features/src/preview/documentRenderer.ts b/extensions/markdown-language-features/src/preview/documentRenderer.ts
index 61182a24436..f96fce9b745 100644
--- a/extensions/markdown-language-features/src/preview/documentRenderer.ts
+++ b/extensions/markdown-language-features/src/preview/documentRenderer.ts
@@ -41,16 +41,28 @@ export interface ImageInfo {
 }
 
 export class MdDocumentRenderer {
+
+	readonly #engine: MarkdownItEngine;
+	readonly #context: vscode.ExtensionContext;
+	readonly #cspArbiter: ContentSecurityPolicyArbiter;
+	readonly #contributionProvider: MarkdownContributionProvider;
+	readonly #logger: ILogger;
+
 	constructor(
-		private readonly _engine: MarkdownItEngine,
-		private readonly _context: vscode.ExtensionContext,
-		private readonly _cspArbiter: ContentSecurityPolicyArbiter,
-		private readonly _contributionProvider: MarkdownContributionProvider,
-		private readonly _logger: ILogger
+		engine: MarkdownItEngine,
+		context: vscode.ExtensionContext,
+		cspArbiter: ContentSecurityPolicyArbiter,
+		contributionProvider: MarkdownContributionProvider,
+		logger: ILogger
 	) {
+		this.#engine = engine;
+		this.#context = context;
+		this.#cspArbiter = cspArbiter;
+		this.#contributionProvider = contributionProvider;
+		this.#logger = logger;
 		this.iconPath = {
-			dark: vscode.Uri.joinPath(this._context.extensionUri, 'media', 'preview-dark.svg'),
-			light: vscode.Uri.joinPath(this._context.extensionUri, 'media', 'preview-light.svg'),
+			dark: vscode.Uri.joinPath(this.#context.extensionUri, 'media', 'preview-dark.svg'),
+			light: vscode.Uri.joinPath(this.#context.extensionUri, 'media', 'preview-light.svg'),
 		};
 	}
 
@@ -76,15 +88,15 @@ export class MdDocumentRenderer {
 			scrollPreviewWithEditor: config.scrollPreviewWithEditor,
 			scrollEditorWithPreview: config.scrollEditorWithPreview,
 			doubleClickToSwitchToEditor: config.doubleClickToSwitchToEditor,
-			disableSecurityWarnings: this._cspArbiter.shouldDisableSecurityWarnings(),
+			disableSecurityWarnings: this.#cspArbiter.shouldDisableSecurityWarnings(),
 			webviewResourceRoot: resourceProvider.asWebviewUri(markdownDocument.uri).toString(),
 		};
 
-		this._logger.trace('DocumentRenderer', `provideTextDocumentContent - ${markdownDocument.uri}`, initialData);
+		this.#logger.trace('DocumentRenderer', `provideTextDocumentContent - ${markdownDocument.uri}`, initialData);
 
 		// Content Security Policy
 		const nonce = generateUuid();
-		const csp = this._getCsp(resourceProvider, sourceUri, nonce);
+		const csp = this.#getCsp(resourceProvider, sourceUri, nonce);
 
 		const body = await this.renderBody(markdownDocument, resourceProvider);
 		if (token.isCancellationRequested) {
@@ -92,7 +104,7 @@ export class MdDocumentRenderer {
 		}
 
 		const html = `<!DOCTYPE html>
-			<html style="${escapeAttribute(this._getSettingsOverrideStyles(config))}">
+			<html style="${escapeAttribute(this.#getSettingsOverrideStyles(config))}">
 			<head>
 				<meta http-equiv="Content-type" content="text/html;charset=UTF-8">
 				<meta http-equiv="Content-Security-Policy" content="${escapeAttribute(csp)}">
@@ -101,12 +113,12 @@ export class MdDocumentRenderer {
 					data-strings="${escapeAttribute(JSON.stringify(previewStrings))}"
 					data-state="${escapeAttribute(JSON.stringify(state || {}))}"
 					data-initial-md-content="${escapeAttribute(body.html)}">
-				<script src="${this._extensionResourcePath(resourceProvider, 'pre.js')}" nonce="${nonce}"></script>
-				${this._getStyles(resourceProvider, sourceUri, config, imageInfo)}
+				<script src="${this.#extensionResourcePath(resourceProvider, 'pre.js')}" nonce="${nonce}"></script>
+				${this.#getStyles(resourceProvider, sourceUri, config, imageInfo)}
 				<base href="${resourceProvider.asWebviewUri(markdownDocument.uri)}">
 			</head>
 			<body class="vscode-body ${config.scrollBeyondLastLine ? 'scrollBeyondLastLine' : ''} ${config.wordWrap ? 'wordWrap' : ''} ${config.markEditorSelection ? 'showEditorSelection' : ''}">
-				${this._getScripts(resourceProvider, nonce)}
+				${this.#getScripts(resourceProvider, nonce)}
 			</body>
 			</html>`;
 		return {
@@ -119,7 +131,7 @@ export class MdDocumentRenderer {
 		markdownDocument: vscode.TextDocument,
 		resourceProvider: WebviewResourceProvider,
 	): Promise<MarkdownContentProviderOutput> {
-		const rendered = await this._engine.render(markdownDocument, resourceProvider);
+		const rendered = await this.#engine.render(markdownDocument, resourceProvider);
 		const html = `<div class="markdown-body" dir="auto">${rendered.html}<div class="code-line" data-line="${markdownDocument.lineCount}"></div></div>`;
 		return {
 			html,
@@ -138,13 +150,13 @@ export class MdDocumentRenderer {
 			</html>`;
 	}
 
-	private _extensionResourcePath(resourceProvider: WebviewResourceProvider, mediaFile: string): string {
+	#extensionResourcePath(resourceProvider: WebviewResourceProvider, mediaFile: string): string {
 		const webviewResource = resourceProvider.asWebviewUri(
-			vscode.Uri.joinPath(this._context.extensionUri, 'media', mediaFile));
+			vscode.Uri.joinPath(this.#context.extensionUri, 'media', mediaFile));
 		return webviewResource.toString();
 	}
 
-	private _fixHref(resourceProvider: WebviewResourceProvider, resource: vscode.Uri, href: string): string {
+	#fixHref(resourceProvider: WebviewResourceProvider, resource: vscode.Uri, href: string): string {
 		if (!href) {
 			return href;
 		}
@@ -168,18 +180,18 @@ export class MdDocumentRenderer {
 		return resourceProvider.asWebviewUri(vscode.Uri.joinPath(uri.Utils.dirname(resource), href)).toString();
 	}
 
-	private _computeCustomStyleSheetIncludes(resourceProvider: WebviewResourceProvider, resource: vscode.Uri, config: MarkdownPreviewConfiguration): string {
+	#computeCustomStyleSheetIncludes(resourceProvider: WebviewResourceProvider, resource: vscode.Uri, config: MarkdownPreviewConfiguration): string {
 		if (!Array.isArray(config.styles)) {
 			return '';
 		}
 		const out: string[] = [];
 		for (const style of config.styles) {
-			out.push(`<link rel="stylesheet" class="code-user-style" data-source="${escapeAttribute(style)}" href="${escapeAttribute(this._fixHref(resourceProvider, resource, style))}" type="text/css" media="screen">`);
+			out.push(`<link rel="stylesheet" class="code-user-style" data-source="${escapeAttribute(style)}" href="${escapeAttribute(this.#fixHref(resourceProvider, resource, style))}" type="text/css" media="screen">`);
 		}
 		return out.join('\n');
 	}
 
-	private _getSettingsOverrideStyles(config: MarkdownPreviewConfiguration): string {
+	#getSettingsOverrideStyles(config: MarkdownPreviewConfiguration): string {
 		return [
 			config.fontFamily ? `--markdown-font-family: ${config.fontFamily};` : '',
 			isNaN(config.fontSize) ? '' : `--markdown-font-size: ${config.fontSize}px;`,
@@ -187,7 +199,7 @@ export class MdDocumentRenderer {
 		].join(' ');
 	}
 
-	private _getImageStabilizerStyles(imageInfo: readonly ImageInfo[]): string {
+	#getImageStabilizerStyles(imageInfo: readonly ImageInfo[]): string {
 		if (!imageInfo.length) {
 			return '';
 		}
@@ -204,20 +216,20 @@ export class MdDocumentRenderer {
 		return ret;
 	}
 
-	private _getStyles(resourceProvider: WebviewResourceProvider, resource: vscode.Uri, config: MarkdownPreviewConfiguration, imageInfo: readonly ImageInfo[]): string {
+	#getStyles(resourceProvider: WebviewResourceProvider, resource: vscode.Uri, config: MarkdownPreviewConfiguration, imageInfo: readonly ImageInfo[]): string {
 		const baseStyles: string[] = [];
-		for (const resource of this._contributionProvider.contributions.previewStyles) {
+		for (const resource of this.#contributionProvider.contributions.previewStyles) {
 			baseStyles.push(`<link rel="stylesheet" type="text/css" href="${escapeAttribute(resourceProvider.asWebviewUri(resource))}">`);
 		}
 
 		return `${baseStyles.join('\n')}
-			${this._computeCustomStyleSheetIncludes(resourceProvider, resource, config)}
-			${this._getImageStabilizerStyles(imageInfo)}`;
+			${this.#computeCustomStyleSheetIncludes(resourceProvider, resource, config)}
+			${this.#getImageStabilizerStyles(imageInfo)}`;
 	}
 
-	private _getScripts(resourceProvider: WebviewResourceProvider, nonce: string): string {
+	#getScripts(resourceProvider: WebviewResourceProvider, nonce: string): string {
 		const out: string[] = [];
-		for (const resource of this._contributionProvider.contributions.previewScripts) {
+		for (const resource of this.#contributionProvider.contributions.previewScripts) {
 			out.push(`<script async
 				src="${escapeAttribute(resourceProvider.asWebviewUri(resource))}"
 				nonce="${nonce}"
@@ -226,13 +238,13 @@ export class MdDocumentRenderer {
 		return out.join('\n');
 	}
 
-	private _getCsp(
+	#getCsp(
 		provider: WebviewResourceProvider,
 		resource: vscode.Uri,
 		nonce: string
 	): string {
 		const rule = provider.cspSource.split(';')[0];
-		switch (this._cspArbiter.getSecurityLevelForResource(resource)) {
+		switch (this.#cspArbiter.getSecurityLevelForResource(resource)) {
 			case MarkdownPreviewSecurityLevel.AllowInsecureContent:
 				return `default-src 'none'; img-src 'self' ${rule} http: https: data:; media-src 'self' ${rule} http: https: data:; script-src 'nonce-${nonce}'; style-src 'self' ${rule} 'unsafe-inline' http: https: data:; font-src 'self' ${rule} http: https: data:;`;
 
diff --git a/extensions/markdown-language-features/src/preview/preview.ts b/extensions/markdown-language-features/src/preview/preview.ts
index 1053c305cac..9932db7d1b2 100644
--- a/extensions/markdown-language-features/src/preview/preview.ts
+++ b/extensions/markdown-language-features/src/preview/preview.ts
@@ -21,16 +21,16 @@ import type { FromWebviewMessage, ToWebviewMessage } from '../../types/previewMe
 export class PreviewDocumentVersion {
 
 	public readonly resource: vscode.Uri;
-	private readonly _version: number;
+	readonly #version: number;
 
 	public constructor(document: vscode.TextDocument) {
 		this.resource = document.uri;
-		this._version = document.version;
+		this.#version = document.version;
 	}
 
 	public equals(other: PreviewDocumentVersion): boolean {
 		return areUrisEqual(this.resource, other.resource)
-			&& this._version === other._version;
+			&& this.#version === other.#version;
 	}
 }
 
@@ -42,59 +42,73 @@ interface MarkdownPreviewDelegate {
 
 class MarkdownPreview extends Disposable implements WebviewResourceProvider {
 
-	private static readonly _unwatchedImageSchemes = new Set(['https', 'http', 'data']);
+	static readonly #unwatchedImageSchemes = new Set(['https', 'http', 'data']);
 
-	private _disposed: boolean = false;
+	#disposed: boolean = false;
 
-	private readonly _delay = 300;
-	private _throttleTimer: any;
+	readonly #delay = 300;
+	#throttleTimer: any;
 
-	private readonly _resource: vscode.Uri;
-	private readonly _webviewPanel: vscode.WebviewPanel;
+	readonly #resource: vscode.Uri;
+	readonly #webviewPanel: vscode.WebviewPanel;
 
-	private _line: number | undefined;
-	private readonly _scrollToFragment: string | undefined;
-	private _firstUpdate = true;
-	private _currentVersion?: PreviewDocumentVersion;
-	private _isScrolling = false;
+	#line: number | undefined;
+	readonly #scrollToFragment: string | undefined;
+	#firstUpdate = true;
+	#currentVersion?: PreviewDocumentVersion;
+	#isScrolling = false;
 
-	private _imageInfo: readonly ImageInfo[] = [];
-	private readonly _fileWatchersBySrc = new Map</* src: */ string, vscode.FileSystemWatcher>();
+	#imageInfo: readonly ImageInfo[] = [];
+	readonly #fileWatchersBySrc = new Map</* src: */ string, vscode.FileSystemWatcher>();
 
-	private readonly _onScrollEmitter = this._register(new vscode.EventEmitter<LastScrollLocation>());
-	public readonly onScroll = this._onScrollEmitter.event;
+	readonly #onScrollEmitter = this._register(new vscode.EventEmitter<LastScrollLocation>());
+	public readonly onScroll = this.#onScrollEmitter.event;
 
-	private readonly _disposeCts = this._register(new vscode.CancellationTokenSource());
+	readonly #disposeCts = this._register(new vscode.CancellationTokenSource());
+
+	readonly #delegate: MarkdownPreviewDelegate;
+	readonly #contentProvider: MdDocumentRenderer;
+	readonly #previewConfigurations: MarkdownPreviewConfigurationManager;
+	readonly #logger: ILogger;
+	readonly #contributionProvider: MarkdownContributionProvider;
+	readonly #opener: MdLinkOpener;
 
 	constructor(
 		webview: vscode.WebviewPanel,
 		resource: vscode.Uri,
 		startingScroll: StartingScrollLocation | undefined,
-		private readonly _delegate: MarkdownPreviewDelegate,
-		private readonly _contentProvider: MdDocumentRenderer,
-		private readonly _previewConfigurations: MarkdownPreviewConfigurationManager,
-		private readonly _logger: ILogger,
-		private readonly _contributionProvider: MarkdownContributionProvider,
-		private readonly _opener: MdLinkOpener,
+		delegate: MarkdownPreviewDelegate,
+		contentProvider: MdDocumentRenderer,
+		previewConfigurations: MarkdownPreviewConfigurationManager,
+		logger: ILogger,
+		contributionProvider: MarkdownContributionProvider,
+		opener: MdLinkOpener,
 	) {
 		super();
 
-		this._webviewPanel = webview;
-		this._resource = resource;
+		this.#delegate = delegate;
+		this.#contentProvider = contentProvider;
+		this.#previewConfigurations = previewConfigurations;
+		this.#logger = logger;
+		this.#contributionProvider = contributionProvider;
+		this.#opener = opener;
+
+		this.#webviewPanel = webview;
+		this.#resource = resource;
 
 		switch (startingScroll?.type) {
 			case 'line':
 				if (!isNaN(startingScroll.line!)) {
-					this._line = startingScroll.line;
+					this.#line = startingScroll.line;
 				}
 				break;
 
 			case 'fragment':
-				this._scrollToFragment = startingScroll.fragment;
+				this.#scrollToFragment = startingScroll.fragment;
 				break;
 		}
 
-		this._register(_contributionProvider.onContributionsChanged(() => {
+		this._register(contributionProvider.onContributionsChanged(() => {
 			setTimeout(() => this.refresh(true), 0);
 		}));
 
@@ -122,26 +136,26 @@ class MarkdownPreview extends Disposable implements WebviewResourceProvider {
 			}));
 		}
 
-		this._register(this._webviewPanel.webview.onDidReceiveMessage((e: FromWebviewMessage.Type) => {
-			if (e.source !== this._resource.toString()) {
+		this._register(this.#webviewPanel.webview.onDidReceiveMessage((e: FromWebviewMessage.Type) => {
+			if (e.source !== this.#resource.toString()) {
 				return;
 			}
 
 			switch (e.type) {
 				case 'cacheImageSizes':
-					this._imageInfo = e.imageData;
+					this.#imageInfo = e.imageData;
 					break;
 
 				case 'revealLine':
-					this._onDidScrollPreview(e.line);
+					this.#onDidScrollPreview(e.line);
 					break;
 
 				case 'didClick':
-					this._onDidClickPreview(e.line);
+					this.#onDidClickPreview(e.line);
 					break;
 
 				case 'openLink':
-					this._onDidClickPreviewLink(e.href);
+					this.#onDidClickPreviewLink(e.href);
 					break;
 
 				case 'showPreviewSecuritySelector':
@@ -159,29 +173,29 @@ class MarkdownPreview extends Disposable implements WebviewResourceProvider {
 	}
 
 	override dispose() {
-		this._disposeCts.cancel();
+		this.#disposeCts.cancel();
 
 		super.dispose();
 
-		this._disposed = true;
+		this.#disposed = true;
 
-		clearTimeout(this._throttleTimer);
-		for (const entry of this._fileWatchersBySrc.values()) {
+		clearTimeout(this.#throttleTimer);
+		for (const entry of this.#fileWatchersBySrc.values()) {
 			entry.dispose();
 		}
-		this._fileWatchersBySrc.clear();
+		this.#fileWatchersBySrc.clear();
 	}
 
 	public get resource(): vscode.Uri {
-		return this._resource;
+		return this.#resource;
 	}
 
 	public get state() {
 		return {
-			resource: this._resource.toString(),
-			line: this._line,
-			fragment: this._scrollToFragment,
-			...this._delegate.getAdditionalState(),
+			resource: this.#resource.toString(),
+			line: this.#line,
+			fragment: this.#scrollToFragment,
+			...this.#delegate.getAdditionalState(),
 		};
 	}
 
@@ -191,79 +205,79 @@ class MarkdownPreview extends Disposable implements WebviewResourceProvider {
 	*/
 	public refresh(forceUpdate: boolean = false) {
 		// Schedule update if none is pending
-		if (!this._throttleTimer) {
-			if (this._firstUpdate) {
-				this._updatePreview(true);
+		if (!this.#throttleTimer) {
+			if (this.#firstUpdate) {
+				this.#updatePreview(true);
 			} else {
-				this._throttleTimer = setTimeout(() => this._updatePreview(forceUpdate), this._delay);
+				this.#throttleTimer = setTimeout(() => this.#updatePreview(forceUpdate), this.#delay);
 			}
 		}
 
-		this._firstUpdate = false;
+		this.#firstUpdate = false;
 	}
 
 
 	public isPreviewOf(resource: vscode.Uri): boolean {
-		return areUrisEqual(this._resource, resource);
+		return areUrisEqual(this.#resource, resource);
 	}
 
 	public postMessage(msg: ToWebviewMessage.Type) {
-		if (!this._disposed) {
-			this._webviewPanel.webview.postMessage(msg);
+		if (!this.#disposed) {
+			this.#webviewPanel.webview.postMessage(msg);
 		}
 	}
 
 	public scrollTo(topLine: number) {
-		if (this._disposed) {
+		if (this.#disposed) {
 			return;
 		}
 
-		if (this._isScrolling) {
-			this._isScrolling = false;
+		if (this.#isScrolling) {
+			this.#isScrolling = false;
 			return;
 		}
 
-		this._logger.trace('MarkdownPreview', 'updateForView', { markdownFile: this._resource });
-		this._line = topLine;
+		this.#logger.trace('MarkdownPreview', 'updateForView', { markdownFile: this.#resource });
+		this.#line = topLine;
 		this.postMessage({
 			type: 'updateView',
 			line: topLine,
-			source: this._resource.toString()
+			source: this.#resource.toString()
 		});
 	}
 
-	private async _updatePreview(forceUpdate?: boolean): Promise<void> {
-		clearTimeout(this._throttleTimer);
-		this._throttleTimer = undefined;
+	async #updatePreview(forceUpdate?: boolean): Promise<void> {
+		clearTimeout(this.#throttleTimer);
+		this.#throttleTimer = undefined;
 
-		if (this._disposed) {
+		if (this.#disposed) {
 			return;
 		}
 
 		let document: vscode.TextDocument;
 		try {
-			document = await vscode.workspace.openTextDocument(this._resource);
+			document = await vscode.workspace.openTextDocument(this.#resource);
 		} catch {
-			if (!this._disposed) {
-				await this._showFileNotFoundError();
+			if (!this.#disposed) {
+				await this.#showFileNotFoundError();
 			}
 			return;
 		}
 
-		if (this._disposed) {
+		if (this.#disposed) {
 			return;
 		}
 
 		const pendingVersion = new PreviewDocumentVersion(document);
-		if (!forceUpdate && this._currentVersion?.equals(pendingVersion)) {
-			if (this._line) {
-				this.scrollTo(this._line);
+		if (!forceUpdate && this.#currentVersion?.equals(pendingVersion)) {
+			if (this.#line) {
+				this.scrollTo(this.#line);
 			}
 			return;
 		}
 
-		const shouldReloadPage = forceUpdate || !this._currentVersion || this._currentVersion.resource.toString() !== pendingVersion.resource.toString() || !this._webviewPanel.visible;
-		this._currentVersion = pendingVersion;
+		const shouldReloadPage = forceUpdate || !this.#currentVersion || this.#currentVersion.resource.toString() !== pendingVersion.resource.toString() || !this.#webviewPanel.visible;
+		this.#currentVersion = pendingVersion;
 
 		let selectedLine: number | undefined = undefined;
 		for (const editor of vscode.window.visibleTextEditors) {
@@ -274,21 +288,21 @@ class MarkdownPreview extends Disposable implements WebviewResourceProvider {
 		}
 
 		const content = await (shouldReloadPage
-			? this._contentProvider.renderDocument(document, this, this._previewConfigurations, this._line, selectedLine, this.state, this._imageInfo, this._disposeCts.token)
-			: this._contentProvider.renderBody(document, this));
+			? this.#contentProvider.renderDocument(document, this, this.#previewConfigurations, this.#line, selectedLine, this.state, this.#imageInfo, this.#disposeCts.token)
+			: this.#contentProvider.renderBody(document, this));
 
 		// Another call to `doUpdate` may have happened.
 		// Make sure we are still updating for the correct document
-		if (this._currentVersion?.equals(pendingVersion)) {
-			this._updateWebviewContent(content.html, shouldReloadPage);
-			this._updateImageWatchers(content.containingImages);
+		if (this.#currentVersion?.equals(pendingVersion)) {
+			this.#updateWebviewContent(content.html, shouldReloadPage);
+			this.#updateImageWatchers(content.containingImages);
 		}
 	}
 
-	private _onDidScrollPreview(line: number) {
-		this._line = line;
-		this._onScrollEmitter.fire({ line: this._line, uri: this._resource });
-		const config = this._previewConfigurations.loadAndCacheConfiguration(this._resource);
+	#onDidScrollPreview(line: number) {
+		this.#line = line;
+		this.#onScrollEmitter.fire({ line: this.#line, uri: this.#resource });
+		const config = this.#previewConfigurations.loadAndCacheConfiguration(this.#resource);
 		if (!config.scrollEditorWithPreview) {
 			return;
 		}
@@ -298,12 +312,12 @@ class MarkdownPreview extends Disposable implements WebviewResourceProvider {
 				continue;
 			}
 
-			this._isScrolling = true;
+			this.#isScrolling = true;
 			scrollEditorToLine(line, editor);
 		}
 	}
 
-	private async _onDidClickPreview(line: number): Promise<void> {
+	async #onDidClickPreview(line: number): Promise<void> {
 		// fix #82457, find currently opened but unfocused source tab
 		await vscode.commands.executeCommand('markdown.showSource');
 
@@ -322,97 +336,97 @@ class MarkdownPreview extends Disposable implements WebviewResourceProvider {
 			}
 		}
 
-		await vscode.workspace.openTextDocument(this._resource)
+		await vscode.workspace.openTextDocument(this.#resource)
 			.then(vscode.window.showTextDocument)
 			.then((editor) => {
 				revealLineInEditor(editor);
 			}, () => {
-				vscode.window.showErrorMessage(vscode.l10n.t('Could not open {0}', this._resource.toString()));
+				vscode.window.showErrorMessage(vscode.l10n.t('Could not open {0}', this.#resource.toString()));
 			});
 	}
 
-	private async _showFileNotFoundError() {
-		this._webviewPanel.webview.html = this._contentProvider.renderFileNotFoundDocument(this._resource);
+	async #showFileNotFoundError() {
+		this.#webviewPanel.webview.html = this.#contentProvider.renderFileNotFoundDocument(this.#resource);
 	}
 
-	private _updateWebviewContent(html: string, reloadPage: boolean): void {
-		if (this._disposed) {
+	#updateWebviewContent(html: string, reloadPage: boolean): void {
+		if (this.#disposed) {
 			return;
 		}
 
-		if (this._delegate.getTitle) {
-			this._webviewPanel.title = this._delegate.getTitle(this._resource);
+		if (this.#delegate.getTitle) {
+			this.#webviewPanel.title = this.#delegate.getTitle(this.#resource);
 		}
-		this._webviewPanel.webview.options = this._getWebviewOptions();
+		this.#webviewPanel.webview.options = this.#getWebviewOptions();
 
 		if (reloadPage) {
-			this._webviewPanel.webview.html = html;
+			this.#webviewPanel.webview.html = html;
 		} else {
 			this.postMessage({
 				type: 'updateContent',
 				content: html,
-				source: this._resource.toString(),
+				source: this.#resource.toString(),
 			});
 		}
 	}
 
-	private _updateImageWatchers(srcs: Set<string>) {
+	#updateImageWatchers(srcs: Set<string>) {
 		// Delete stale file watchers.
-		for (const [src, watcher] of this._fileWatchersBySrc) {
+		for (const [src, watcher] of this.#fileWatchersBySrc) {
 			if (!srcs.has(src)) {
 				watcher.dispose();
-				this._fileWatchersBySrc.delete(src);
+				this.#fileWatchersBySrc.delete(src);
 			}
 		}
 
 		// Create new file watchers.
-		const root = vscode.Uri.joinPath(this._resource, '../');
+		const root = vscode.Uri.joinPath(this.#resource, '../');
 		for (const src of srcs) {
 			const uri = urlToUri(src, root);
-			if (uri && !MarkdownPreview._unwatchedImageSchemes.has(uri.scheme) && !this._fileWatchersBySrc.has(src)) {
+			if (uri && !MarkdownPreview.#unwatchedImageSchemes.has(uri.scheme) && !this.#fileWatchersBySrc.has(src)) {
 				const watcher = vscode.workspace.createFileSystemWatcher(new vscode.RelativePattern(uri, '*'));
 				watcher.onDidChange(() => {
 					this.refresh(true);
 				});
-				this._fileWatchersBySrc.set(src, watcher);
+				this.#fileWatchersBySrc.set(src, watcher);
 			}
 		}
 	}
 
-	private _getWebviewOptions(): vscode.WebviewOptions {
+	#getWebviewOptions(): vscode.WebviewOptions {
 		return {
 			enableScripts: true,
 			enableForms: false,
-			localResourceRoots: this._getLocalResourceRoots()
+			localResourceRoots: this.#getLocalResourceRoots()
 		};
 	}
 
-	private _getLocalResourceRoots(): ReadonlyArray<vscode.Uri> {
-		const baseRoots = Array.from(this._contributionProvider.contributions.previewResourceRoots);
+	#getLocalResourceRoots(): ReadonlyArray<vscode.Uri> {
+		const baseRoots = Array.from(this.#contributionProvider.contributions.previewResourceRoots);
 
-		const folder = vscode.workspace.getWorkspaceFolder(this._resource);
+		const folder = vscode.workspace.getWorkspaceFolder(this.#resource);
 		if (folder) {
 			const workspaceRoots = vscode.workspace.workspaceFolders?.map(folder => folder.uri);
 			if (workspaceRoots) {
 				baseRoots.push(...workspaceRoots);
 			}
 		} else {
-			baseRoots.push(uri.Utils.dirname(this._resource));
+			baseRoots.push(uri.Utils.dirname(this.#resource));
 		}
 
 		return baseRoots;
 	}
 
-	private async _onDidClickPreviewLink(href: string) {
+	async #onDidClickPreviewLink(href: string) {
 		const config = vscode.workspace.getConfiguration('markdown', this.resource);
 		const openLinks = config.get<string>('preview.openMarkdownLinks', 'inPreview');
 		if (openLinks === 'inPreview') {
-			const resolved = await this._opener.resolveDocumentLink(href, this.resource);
+			const resolved = await this.#opener.resolveDocumentLink(href, this.resource);
 			if (resolved.kind === 'file') {
 				try {
 					const doc = await vscode.workspace.openTextDocument(vscode.Uri.from(resolved.uri));
 					if (isMarkdownFile(doc)) {
-						return this._delegate.openPreviewLinkToMarkdownFile(doc.uri, resolved.fragment ? decodeURIComponent(resolved.fragment) : undefined);
+						return this.#delegate.openPreviewLinkToMarkdownFile(doc.uri, resolved.fragment ? decodeURIComponent(resolved.fragment) : undefined);
 					}
 				} catch {
 					// Noop
@@ -420,21 +434,21 @@ class MarkdownPreview extends Disposable implements WebviewResourceProvider {
 			}
 		}
 
-		return this._opener.openDocumentLink(href, this.resource);
+		return this.#opener.openDocumentLink(href, this.resource);
 	}
 
 	//#region WebviewResourceProvider
 
 	asWebviewUri(resource: vscode.Uri) {
-		return this._webviewPanel.webview.asWebviewUri(resource);
+		return this.#webviewPanel.webview.asWebviewUri(resource);
 	}
 
 	get cspSource() {
 		return [
-			this._webviewPanel.webview.cspSource,
+			this.#webviewPanel.webview.cspSource,
 
 			// On web, we also need to allow loading of resources from contributed extensions
-			...this._contributionProvider.contributions.previewResourceRoots
+			...this.#contributionProvider.contributions.previewResourceRoots
 				.filter(root => root.scheme === 'http' || root.scheme === 'https')
 				.map(root => {
 					const dirRoot = root.path.endsWith('/') ? root : root.with({ path: root.path + '/' });
@@ -484,13 +498,16 @@ export class StaticMarkdownPreview extends Disposable implements IManagedMarkdow
 		return new StaticMarkdownPreview(webview, resource, contentProvider, previewConfigurations, topmostLineMonitor, logger, contributionProvider, opener, scrollLine);
 	}
 
-	private readonly _preview: MarkdownPreview;
+	readonly #preview: MarkdownPreview;
+
+	readonly #webviewPanel: vscode.WebviewPanel;
+	readonly #previewConfigurations: MarkdownPreviewConfigurationManager;
 
 	private constructor(
-		private readonly _webviewPanel: vscode.WebviewPanel,
+		webviewPanel: vscode.WebviewPanel,
 		resource: vscode.Uri,
 		contentProvider: MdDocumentRenderer,
-		private readonly _previewConfigurations: MarkdownPreviewConfigurationManager,
+		previewConfigurations: MarkdownPreviewConfigurationManager,
 		topmostLineMonitor: TopmostLineMonitor,
 		logger: ILogger,
 		contributionProvider: MarkdownContributionProvider,
@@ -498,52 +515,56 @@ export class StaticMarkdownPreview extends Disposable implements IManagedMarkdow
 		scrollLine?: number,
 	) {
 		super();
+
+		this.#webviewPanel = webviewPanel;
+		this.#previewConfigurations = previewConfigurations;
+
 		const topScrollLocation = scrollLine ? new StartingScrollLine(scrollLine) : undefined;
-		this._preview = this._register(new MarkdownPreview(this._webviewPanel, resource, topScrollLocation, {
+		this.#preview = this._register(new MarkdownPreview(this.#webviewPanel, resource, topScrollLocation, {
 			getAdditionalState: () => { return {}; },
 			openPreviewLinkToMarkdownFile: (markdownLink, fragment) => {
 				return vscode.commands.executeCommand('vscode.openWith', markdownLink.with({
 					fragment
-				}), StaticMarkdownPreview.customEditorViewType, this._webviewPanel.viewColumn);
+				}), StaticMarkdownPreview.customEditorViewType, this.#webviewPanel.viewColumn);
 			}
-		}, contentProvider, _previewConfigurations, logger, contributionProvider, opener));
+		}, contentProvider, previewConfigurations, logger, contributionProvider, opener));
 
-		this._register(this._webviewPanel.onDidDispose(() => {
+		this._register(this.#webviewPanel.onDidDispose(() => {
 			this.dispose();
 		}));
 
-		this._register(this._webviewPanel.onDidChangeViewState(e => {
-			this._onDidChangeViewState.fire(e);
+		this._register(this.#webviewPanel.onDidChangeViewState(e => {
+			this.#onDidChangeViewState.fire(e);
 		}));
 
-		this._register(this._preview.onScroll((scrollInfo) => {
+		this._register(this.#preview.onScroll((scrollInfo) => {
 			topmostLineMonitor.setPreviousStaticEditorLine(scrollInfo);
 		}));
 
 		this._register(topmostLineMonitor.onDidChanged(event => {
-			if (this._preview.isPreviewOf(event.resource)) {
-				this._preview.scrollTo(event.line);
+			if (this.#preview.isPreviewOf(event.resource)) {
+				this.#preview.scrollTo(event.line);
 			}
 		}));
 	}
 
 	copyImage(id: string) {
-		this._webviewPanel.reveal();
-		this._preview.postMessage({
+		this.#webviewPanel.reveal();
+		this.#preview.postMessage({
 			type: 'copyImage',
 			source: this.resource.toString(),
 			id: id
 		});
 	}
 
-	private readonly _onDispose = this._register(new vscode.EventEmitter<void>());
-	public readonly onDispose = this._onDispose.event;
+	readonly #onDispose = this._register(new vscode.EventEmitter<void>());
+	public readonly onDispose = this.#onDispose.event;
 
-	private readonly _onDidChangeViewState = this._register(new vscode.EventEmitter<vscode.WebviewPanelOnDidChangeViewStateEvent>());
-	public readonly onDidChangeViewState = this._onDidChangeViewState.event;
+	readonly #onDidChangeViewState = this._register(new vscode.EventEmitter<vscode.WebviewPanelOnDidChangeViewStateEvent>());
+	public readonly onDidChangeViewState = this.#onDidChangeViewState.event;
 
 	override dispose() {
-		this._onDispose.fire();
+		this.#onDispose.fire();
 		super.dispose();
 	}
 
@@ -556,21 +577,21 @@ export class StaticMarkdownPreview extends Disposable implements IManagedMarkdow
 	}
 
 	public refresh() {
-		this._preview.refresh(true);
+		this.#preview.refresh(true);
 	}
 
 	public updateConfiguration() {
-		if (this._previewConfigurations.hasConfigurationChanged(this._preview.resource)) {
+		if (this.#previewConfigurations.hasConfigurationChanged(this.#preview.resource)) {
 			this.refresh();
 		}
 	}
 
 	public get resource() {
-		return this._preview.resource;
+		return this.#preview.resource;
 	}
 
 	public get resourceColumn() {
-		return this._webviewPanel.viewColumn || vscode.ViewColumn.One;
+		return this.#webviewPanel.viewColumn || vscode.ViewColumn.One;
 	}
 }
 
@@ -585,11 +606,11 @@ export class DynamicMarkdownPreview extends Disposable implements IManagedMarkdo
 
 	public static readonly viewType = 'markdown.preview';
 
-	private readonly _resourceColumn: vscode.ViewColumn;
-	private _locked: boolean;
+	readonly #resourceColumn: vscode.ViewColumn;
+	#locked: boolean;
 
-	private readonly _webviewPanel: vscode.WebviewPanel;
-	private _preview: MarkdownPreview;
+	readonly #webviewPanel: vscode.WebviewPanel;
+	#preview: MarkdownPreview;
 
 	public static revive(
 		input: DynamicPreviewInput,
@@ -619,7 +640,7 @@ export class DynamicMarkdownPreview extends Disposable implements IManagedMarkdo
 	): DynamicMarkdownPreview {
 		const webview = vscode.window.createWebviewPanel(
 			DynamicMarkdownPreview.viewType,
-			DynamicMarkdownPreview._getPreviewTitle(input.resource, input.locked),
+			DynamicMarkdownPreview.#getPreviewTitle(input.resource, input.locked),
 			previewColumn, { enableFindWidget: true, });
 
 		webview.iconPath = contentProvider.iconPath;
@@ -628,43 +649,57 @@ export class DynamicMarkdownPreview extends Disposable implements IManagedMarkdo
 			contentProvider, previewConfigurations, logger, topmostLineMonitor, contributionProvider, opener);
 	}
 
+	readonly #contentProvider: MdDocumentRenderer;
+	readonly #previewConfigurations: MarkdownPreviewConfigurationManager;
+	readonly #logger: ILogger;
+	readonly #topmostLineMonitor: TopmostLineMonitor;
+	readonly #contributionProvider: MarkdownContributionProvider;
+	readonly #opener: MdLinkOpener;
+
 	private constructor(
 		webview: vscode.WebviewPanel,
 		input: DynamicPreviewInput,
-		private readonly _contentProvider: MdDocumentRenderer,
-		private readonly _previewConfigurations: MarkdownPreviewConfigurationManager,
-		private readonly _logger: ILogger,
-		private readonly _topmostLineMonitor: TopmostLineMonitor,
-		private readonly _contributionProvider: MarkdownContributionProvider,
-		private readonly _opener: MdLinkOpener,
+		contentProvider: MdDocumentRenderer,
+		previewConfigurations: MarkdownPreviewConfigurationManager,
+		logger: ILogger,
+		topmostLineMonitor: TopmostLineMonitor,
+		contributionProvider: MarkdownContributionProvider,
+		opener: MdLinkOpener,
 	) {
 		super();
 
-		this._webviewPanel = webview;
+		this.#contentProvider = contentProvider;
+		this.#previewConfigurations = previewConfigurations;
+		this.#logger = logger;
+		this.#topmostLineMonitor = topmostLineMonitor;
+		this.#contributionProvider = contributionProvider;
+		this.#opener = opener;
 
-		this._resourceColumn = input.resourceColumn;
-		this._locked = input.locked;
+		this.#webviewPanel = webview;
 
-		this._preview = this._createPreview(input.resource, typeof input.line === 'number' ? new StartingScrollLine(input.line) : undefined);
+		this.#resourceColumn = input.resourceColumn;
+		this.#locked = input.locked;
+
+		this.#preview = this.#createPreview(input.resource, typeof input.line === 'number' ? new StartingScrollLine(input.line) : undefined);
 
 		this._register(webview.onDidDispose(() => { this.dispose(); }));
 
-		this._register(this._webviewPanel.onDidChangeViewState(e => {
-			this._onDidChangeViewStateEmitter.fire(e);
+		this._register(this.#webviewPanel.onDidChangeViewState(e => {
+			this.#onDidChangeViewStateEmitter.fire(e);
 		}));
 
-		this._register(this._topmostLineMonitor.onDidChanged(event => {
-			if (this._preview.isPreviewOf(event.resource)) {
-				this._preview.scrollTo(event.line);
+		this._register(this.#topmostLineMonitor.onDidChanged(event => {
+			if (this.#preview.isPreviewOf(event.resource)) {
+				this.#preview.scrollTo(event.line);
 			}
 		}));
 
 		this._register(vscode.window.onDidChangeTextEditorSelection(event => {
-			if (this._preview.isPreviewOf(event.textEditor.document.uri)) {
-				this._preview.postMessage({
+			if (this.#preview.isPreviewOf(event.textEditor.document.uri)) {
+				this.#preview.postMessage({
 					type: 'onDidChangeTextEditorSelection',
 					line: event.selections[0].active.line,
-					source: this._preview.resource.toString()
+					source: this.#preview.resource.toString()
 				});
 			}
 		}));
@@ -675,7 +710,7 @@ export class DynamicMarkdownPreview extends Disposable implements IManagedMarkdo
 				return;
 			}
 
-			if (isMarkdownFile(editor.document) && !this._locked && !this._preview.isPreviewOf(editor.document.uri)) {
+			if (isMarkdownFile(editor.document) && !this.#locked && !this.#preview.isPreviewOf(editor.document.uri)) {
 				const line = getVisibleLine(editor);
 				this.update(editor.document.uri, line ? new StartingScrollLine(line) : undefined);
 			}
@@ -683,56 +718,56 @@ export class DynamicMarkdownPreview extends Disposable implements IManagedMarkdo
 	}
 
 	copyImage(id: string) {
-		this._webviewPanel.reveal();
-		this._preview.postMessage({
+		this.#webviewPanel.reveal();
+		this.#preview.postMessage({
 			type: 'copyImage',
 			source: this.resource.toString(),
 			id: id
 		});
 	}
 
-	private readonly _onDisposeEmitter = this._register(new vscode.EventEmitter<void>());
-	public readonly onDispose = this._onDisposeEmitter.event;
+	readonly #onDisposeEmitter = this._register(new vscode.EventEmitter<void>());
+	public readonly onDispose = this.#onDisposeEmitter.event;
 
-	private readonly _onDidChangeViewStateEmitter = this._register(new vscode.EventEmitter<vscode.WebviewPanelOnDidChangeViewStateEvent>());
-	public readonly onDidChangeViewState = this._onDidChangeViewStateEmitter.event;
+	readonly #onDidChangeViewStateEmitter = this._register(new vscode.EventEmitter<vscode.WebviewPanelOnDidChangeViewStateEvent>());
+	public readonly onDidChangeViewState = this.#onDidChangeViewStateEmitter.event;
 
 	override dispose() {
-		this._preview.dispose();
-		this._webviewPanel.dispose();
+		this.#preview.dispose();
+		this.#webviewPanel.dispose();
 
-		this._onDisposeEmitter.fire();
-		this._onDisposeEmitter.dispose();
+		this.#onDisposeEmitter.fire();
+		this.#onDisposeEmitter.dispose();
 		super.dispose();
 	}
 
 	public get resource() {
-		return this._preview.resource;
+		return this.#preview.resource;
 	}
 
 	public get resourceColumn() {
-		return this._resourceColumn;
+		return this.#resourceColumn;
 	}
 
 	public reveal(viewColumn: vscode.ViewColumn) {
-		this._webviewPanel.reveal(viewColumn);
+		this.#webviewPanel.reveal(viewColumn);
 	}
 
 	public refresh() {
-		this._preview.refresh(true);
+		this.#preview.refresh(true);
 	}
 
 	public updateConfiguration() {
-		if (this._previewConfigurations.hasConfigurationChanged(this._preview.resource)) {
+		if (this.#previewConfigurations.hasConfigurationChanged(this.#preview.resource)) {
 			this.refresh();
 		}
 	}
 
 	public update(newResource: vscode.Uri, scrollLocation?: StartingScrollLocation) {
-		if (this._preview.isPreviewOf(newResource)) {
+		if (this.#preview.isPreviewOf(newResource)) {
 			switch (scrollLocation?.type) {
 				case 'line':
-					this._preview.scrollTo(scrollLocation.line);
+					this.#preview.scrollTo(scrollLocation.line);
 					return;
 
 				case 'fragment':
@@ -744,16 +779,16 @@ export class DynamicMarkdownPreview extends Disposable implements IManagedMarkdo
 			}
 		}
 
-		this._preview.dispose();
-		this._preview = this._createPreview(newResource, scrollLocation);
+		this.#preview.dispose();
+		this.#preview = this.#createPreview(newResource, scrollLocation);
 	}
 
 	public toggleLock() {
-		this._locked = !this._locked;
-		this._webviewPanel.title = DynamicMarkdownPreview._getPreviewTitle(this._preview.resource, this._locked);
+		this.#locked = !this.#locked;
+		this.#webviewPanel.title = DynamicMarkdownPreview.#getPreviewTitle(this.#preview.resource, this.#locked);
 	}
 
-	private static _getPreviewTitle(resource: vscode.Uri, locked: boolean): string {
+	static #getPreviewTitle(resource: vscode.Uri, locked: boolean): string {
 		const resourceLabel = uri.Utils.basename(resource);
 		return locked
 			? vscode.l10n.t('[Preview] {0}', resourceLabel)
@@ -761,7 +796,7 @@ export class DynamicMarkdownPreview extends Disposable implements IManagedMarkdo
 	}
 
 	public get position(): vscode.ViewColumn | undefined {
-		return this._webviewPanel.viewColumn;
+		return this.#webviewPanel.viewColumn;
 	}
 
 	public matchesResource(
@@ -773,34 +808,34 @@ export class DynamicMarkdownPreview extends Disposable implements IManagedMarkdo
 			return false;
 		}
 
-		if (this._locked) {
-			return otherLocked && this._preview.isPreviewOf(otherResource);
+		if (this.#locked) {
+			return otherLocked && this.#preview.isPreviewOf(otherResource);
 		} else {
 			return !otherLocked;
 		}
 	}
 
 	public matches(otherPreview: DynamicMarkdownPreview): boolean {
-		return this.matchesResource(otherPreview._preview.resource, otherPreview.position, otherPreview._locked);
+		return this.matchesResource(otherPreview.#preview.resource, otherPreview.position, otherPreview.#locked);
 	}
 
-	private _createPreview(resource: vscode.Uri, startingScroll?: StartingScrollLocation): MarkdownPreview {
-		return new MarkdownPreview(this._webviewPanel, resource, startingScroll, {
-			getTitle: (resource) => DynamicMarkdownPreview._getPreviewTitle(resource, this._locked),
+	#createPreview(resource: vscode.Uri, startingScroll?: StartingScrollLocation): MarkdownPreview {
+		return new MarkdownPreview(this.#webviewPanel, resource, startingScroll, {
+			getTitle: (resource) => DynamicMarkdownPreview.#getPreviewTitle(resource, this.#locked),
 			getAdditionalState: () => {
 				return {
 					resourceColumn: this.resourceColumn,
-					locked: this._locked,
+					locked: this.#locked,
 				};
 			},
 			openPreviewLinkToMarkdownFile: (link: vscode.Uri, fragment?: string) => {
 				this.update(link, fragment ? new StartingScrollFragment(fragment) : undefined);
 			}
 		},
-			this._contentProvider,
-			this._previewConfigurations,
-			this._logger,
-			this._contributionProvider,
-			this._opener);
+			this.#contentProvider,
+			this.#previewConfigurations,
+			this.#logger,
+			this.#contributionProvider,
+			this.#opener);
 	}
 }
diff --git a/extensions/markdown-language-features/src/preview/previewConfig.ts b/extensions/markdown-language-features/src/preview/previewConfig.ts
index 01d63403377..ac240b97eb7 100644
--- a/extensions/markdown-language-features/src/preview/previewConfig.ts
+++ b/extensions/markdown-language-features/src/preview/previewConfig.ts
@@ -73,24 +73,24 @@ export class MarkdownPreviewConfiguration {
 }
 
 export class MarkdownPreviewConfigurationManager {
-	private readonly _previewConfigurationsForWorkspaces = new Map<string, MarkdownPreviewConfiguration>();
+	readonly #previewConfigurationsForWorkspaces = new Map<string, MarkdownPreviewConfiguration>();
 
 	public loadAndCacheConfiguration(
 		resource: vscode.Uri
 	): MarkdownPreviewConfiguration {
 		const config = MarkdownPreviewConfiguration.getForResource(resource);
-		this._previewConfigurationsForWorkspaces.set(this._getKey(resource), config);
+		this.#previewConfigurationsForWorkspaces.set(this.#getKey(resource), config);
 		return config;
 	}
 
 	public hasConfigurationChanged(resource: vscode.Uri): boolean {
-		const key = this._getKey(resource);
-		const currentConfig = this._previewConfigurationsForWorkspaces.get(key);
+		const key = this.#getKey(resource);
+		const currentConfig = this.#previewConfigurationsForWorkspaces.get(key);
 		const newConfig = MarkdownPreviewConfiguration.getForResource(resource);
 		return !currentConfig?.isEqualTo(newConfig);
 	}
 
-	private _getKey(
+	#getKey(
 		resource: vscode.Uri
 	): string {
 		const folder = vscode.workspace.getWorkspaceFolder(resource);
diff --git a/extensions/markdown-language-features/src/preview/previewManager.ts b/extensions/markdown-language-features/src/preview/previewManager.ts
index 3aa126da063..cc1f7fda40b 100644
--- a/extensions/markdown-language-features/src/preview/previewManager.ts
+++ b/extensions/markdown-language-features/src/preview/previewManager.ts
@@ -24,23 +24,23 @@ export interface DynamicPreviewSettings {
 
 class PreviewStore<T extends IManagedMarkdownPreview> extends Disposable {
 
-	private readonly _previews = new Set<T>();
+	readonly #previews = new Set<T>();
 
 	public override dispose(): void {
 		super.dispose();
-		for (const preview of this._previews) {
+		for (const preview of this.#previews) {
 			preview.dispose();
 		}
-		this._previews.clear();
+		this.#previews.clear();
 	}
 
 	[Symbol.iterator](): Iterator<T> {
-		return this._previews[Symbol.iterator]();
+		return this.#previews[Symbol.iterator]();
 	}
 
 	public get(resource: vscode.Uri, previewSettings: DynamicPreviewSettings): T | undefined {
-		const previewColumn = this._resolvePreviewColumn(previewSettings);
-		for (const preview of this._previews) {
+		const previewColumn = this.#resolvePreviewColumn(previewSettings);
+		for (const preview of this.#previews) {
 			if (preview.matchesResource(resource, previewColumn, previewSettings.locked)) {
 				return preview;
 			}
@@ -49,14 +49,14 @@ class PreviewStore<T extends IManagedMarkdownPreview> extends Disposable {
 	}
 
 	public add(preview: T) {
-		this._previews.add(preview);
+		this.#previews.add(preview);
 	}
 
 	public delete(preview: T) {
-		this._previews.delete(preview);
+		this.#previews.delete(preview);
 	}
 
-	private _resolvePreviewColumn(previewSettings: DynamicPreviewSettings): vscode.ViewColumn | undefined {
+	#resolvePreviewColumn(previewSettings: DynamicPreviewSettings): vscode.ViewColumn | undefined {
 		if (previewSettings.previewColumn === vscode.ViewColumn.Active) {
 			return vscode.window.tabGroups.activeTabGroup.viewColumn;
 		}
@@ -71,22 +71,32 @@ class PreviewStore<T extends IManagedMarkdownPreview> extends Disposable {
 
 export class MarkdownPreviewManager extends Disposable implements vscode.WebviewPanelSerializer, vscode.CustomTextEditorProvider {
 
-	private readonly _topmostLineMonitor = new TopmostLineMonitor();
-	private readonly _previewConfigurations = new MarkdownPreviewConfigurationManager();
+	readonly #topmostLineMonitor = new TopmostLineMonitor();
+	readonly #previewConfigurations = new MarkdownPreviewConfigurationManager();
 
-	private readonly _dynamicPreviews = this._register(new PreviewStore<DynamicMarkdownPreview>());
-	private readonly _staticPreviews = this._register(new PreviewStore<StaticMarkdownPreview>());
+	readonly #dynamicPreviews = this._register(new PreviewStore<DynamicMarkdownPreview>());
+	readonly #staticPreviews = this._register(new PreviewStore<StaticMarkdownPreview>());
 
-	private _activePreview: IManagedMarkdownPreview | undefined = undefined;
+	#activePreview: IManagedMarkdownPreview | undefined = undefined;
+
+	readonly #contentProvider: MdDocumentRenderer;
+	readonly #logger: ILogger;
+	readonly #contributions: MarkdownContributionProvider;
+	readonly #opener: MdLinkOpener;
 
 	public constructor(
-		private readonly _contentProvider: MdDocumentRenderer,
-		private readonly _logger: ILogger,
-		private readonly _contributions: MarkdownContributionProvider,
-		private readonly _opener: MdLinkOpener,
+		contentProvider: MdDocumentRenderer,
+		logger: ILogger,
+		contributions: MarkdownContributionProvider,
+		opener: MdLinkOpener,
 	) {
 		super();
 
+		this.#contentProvider = contentProvider;
+		this.#logger = logger;
+		this.#contributions = contributions;
+		this.#opener = opener;
+
 		this._register(vscode.window.registerWebviewPanelSerializer(DynamicMarkdownPreview.viewType, this));
 
 		this._register(vscode.window.registerCustomEditorProvider(StaticMarkdownPreview.customEditorViewType, this, {
@@ -96,7 +106,7 @@ export class MarkdownPreviewManager extends Disposable implements vscode.Webview
 		this._register(vscode.window.onDidChangeActiveTextEditor(textEditor => {
 			// When at a markdown file, apply existing scroll settings
 			if (textEditor?.document && isMarkdownFile(textEditor.document)) {
-				const line = this._topmostLineMonitor.getPreviousStaticEditorLineByUri(textEditor.document.uri);
+				const line = this.#topmostLineMonitor.getPreviousStaticEditorLineByUri(textEditor.document.uri);
 				if (typeof line === 'number') {
 					scrollEditorToLine(line, textEditor);
 				}
@@ -105,19 +115,19 @@ export class MarkdownPreviewManager extends Disposable implements vscode.Webview
 	}
 
 	public refresh() {
-		for (const preview of this._dynamicPreviews) {
+		for (const preview of this.#dynamicPreviews) {
 			preview.refresh();
 		}
-		for (const preview of this._staticPreviews) {
+		for (const preview of this.#staticPreviews) {
 			preview.refresh();
 		}
 	}
 
 	public updateConfiguration() {
-		for (const preview of this._dynamicPreviews) {
+		for (const preview of this.#dynamicPreviews) {
 			preview.updateConfiguration();
 		}
-		for (const preview of this._staticPreviews) {
+		for (const preview of this.#staticPreviews) {
 			preview.updateConfiguration();
 		}
 	}
@@ -126,11 +136,11 @@ export class MarkdownPreviewManager extends Disposable implements vscode.Webview
 		resource: vscode.Uri,
 		settings: DynamicPreviewSettings
 	): void {
-		let preview = this._dynamicPreviews.get(resource, settings);
+		let preview = this.#dynamicPreviews.get(resource, settings);
 		if (preview) {
 			preview.reveal(settings.previewColumn);
 		} else {
-			preview = this._createNewDynamicPreview(resource, settings);
+			preview = this.#createNewDynamicPreview(resource, settings);
 		}
 
 		preview.update(
@@ -140,15 +150,15 @@ export class MarkdownPreviewManager extends Disposable implements vscode.Webview
 	}
 
 	public get activePreviewResource() {
-		return this._activePreview?.resource;
+		return this.#activePreview?.resource;
 	}
 
 	public get activePreviewResourceColumn() {
-		return this._activePreview?.resourceColumn;
+		return this.#activePreview?.resourceColumn;
 	}
 
 	public findPreview(resource: vscode.Uri): IManagedMarkdownPreview | undefined {
-		for (const preview of [...this._dynamicPreviews, ...this._staticPreviews]) {
+		for (const preview of [...this.#dynamicPreviews, ...this.#staticPreviews]) {
 			if (preview.resource.fsPath === resource.fsPath) {
 				return preview;
 			}
@@ -157,12 +167,12 @@ export class MarkdownPreviewManager extends Disposable implements vscode.Webview
 	}
 
 	public toggleLock() {
-		const preview = this._activePreview;
+		const preview = this.#activePreview;
 		if (preview instanceof DynamicMarkdownPreview) {
 			preview.toggleLock();
 
 			// Close any previews that are now redundant, such as having two dynamic previews in the same editor group
-			for (const otherPreview of this._dynamicPreviews) {
+			for (const otherPreview of this.#dynamicPreviews) {
 				if (otherPreview !== preview && preview.matches(otherPreview)) {
 					otherPreview.dispose();
 				}
@@ -172,7 +182,7 @@ export class MarkdownPreviewManager extends Disposable implements vscode.Webview
 
 	public openDocumentLink(linkText: string, fromResource: vscode.Uri) {
 		const viewColumn = this.findPreview(fromResource)?.resourceColumn;
-		return this._opener.openDocumentLink(linkText, fromResource, viewColumn);
+		return this.#opener.openDocumentLink(linkText, fromResource, viewColumn);
 	}
 
 	public async deserializeWebviewPanel(
@@ -188,14 +198,14 @@ export class MarkdownPreviewManager extends Disposable implements vscode.Webview
 			const preview = DynamicMarkdownPreview.revive(
 				{ resource, locked, line, resourceColumn },
 				webview,
-				this._contentProvider,
-				this._previewConfigurations,
-				this._logger,
-				this._topmostLineMonitor,
-				this._contributions,
-				this._opener);
+				this.#contentProvider,
+				this.#previewConfigurations,
+				this.#logger,
+				this.#topmostLineMonitor,
+				this.#contributions,
+				this.#opener);
 
-			this._registerDynamicPreview(preview);
+			this.#registerDynamicPreview(preview);
 		} catch (e) {
 			console.error(e);
 
@@ -237,23 +247,23 @@ export class MarkdownPreviewManager extends Disposable implements vscode.Webview
 		document: vscode.TextDocument,
 		webview: vscode.WebviewPanel
 	): Promise<void> {
-		const lineNumber = this._topmostLineMonitor.getPreviousStaticTextEditorLineByUri(document.uri);
+		const lineNumber = this.#topmostLineMonitor.getPreviousStaticTextEditorLineByUri(document.uri);
 		const preview = StaticMarkdownPreview.revive(
 			document.uri,
 			webview,
-			this._contentProvider,
-			this._previewConfigurations,
-			this._topmostLineMonitor,
-			this._logger,
-			this._contributions,
-			this._opener,
+			this.#contentProvider,
+			this.#previewConfigurations,
+			this.#topmostLineMonitor,
+			this.#logger,
+			this.#contributions,
+			this.#opener,
 			lineNumber
 		);
-		this._registerStaticPreview(preview);
-		this._activePreview = preview;
+		this.#registerStaticPreview(preview);
+		this.#activePreview = preview;
 	}
 
-	private _createNewDynamicPreview(
+	#createNewDynamicPreview(
 		resource: vscode.Uri,
 		previewSettings: DynamicPreviewSettings
 	): DynamicMarkdownPreview {
@@ -267,52 +277,52 @@ export class MarkdownPreviewManager extends Disposable implements vscode.Webview
 				line: scrollLine,
 			},
 			previewSettings.previewColumn,
-			this._contentProvider,
-			this._previewConfigurations,
-			this._logger,
-			this._topmostLineMonitor,
-			this._contributions,
-			this._opener);
+			this.#contentProvider,
+			this.#previewConfigurations,
+			this.#logger,
+			this.#topmostLineMonitor,
+			this.#contributions,
+			this.#opener);
 
-		this._activePreview = preview;
-		return this._registerDynamicPreview(preview);
+		this.#activePreview = preview;
+		return this.#registerDynamicPreview(preview);
 	}
 
-	private _registerDynamicPreview(preview: DynamicMarkdownPreview): DynamicMarkdownPreview {
-		this._dynamicPreviews.add(preview);
+	#registerDynamicPreview(preview: DynamicMarkdownPreview): DynamicMarkdownPreview {
+		this.#dynamicPreviews.add(preview);
 
 		preview.onDispose(() => {
-			this._dynamicPreviews.delete(preview);
+			this.#dynamicPreviews.delete(preview);
 		});
 
-		this._trackActive(preview);
+		this.#trackActive(preview);
 
 		preview.onDidChangeViewState(() => {
 			// Remove other dynamic previews in our column
-			disposeAll(Array.from(this._dynamicPreviews).filter(otherPreview => preview !== otherPreview && preview.matches(otherPreview)));
+			disposeAll(Array.from(this.#dynamicPreviews).filter(otherPreview => preview !== otherPreview && preview.matches(otherPreview)));
 		});
 		return preview;
 	}
 
-	private _registerStaticPreview(preview: StaticMarkdownPreview): StaticMarkdownPreview {
-		this._staticPreviews.add(preview);
+	#registerStaticPreview(preview: StaticMarkdownPreview): StaticMarkdownPreview {
+		this.#staticPreviews.add(preview);
 
 		preview.onDispose(() => {
-			this._staticPreviews.delete(preview);
+			this.#staticPreviews.delete(preview);
 		});
 
-		this._trackActive(preview);
+		this.#trackActive(preview);
 		return preview;
 	}
 
-	private _trackActive(preview: IManagedMarkdownPreview): void {
+	#trackActive(preview: IManagedMarkdownPreview): void {
 		preview.onDidChangeViewState(({ webviewPanel }) => {
-			this._activePreview = webviewPanel.active ? preview : undefined;
+			this.#activePreview = webviewPanel.active ? preview : undefined;
 		});
 
 		preview.onDispose(() => {
-			if (this._activePreview === preview) {
-				this._activePreview = undefined;
+			if (this.#activePreview === preview) {
+				this.#activePreview = undefined;
 			}
 		});
 	}
diff --git a/extensions/markdown-language-features/src/preview/security.ts b/extensions/markdown-language-features/src/preview/security.ts
index 0ba1a9f61f0..292e19563c9 100644
--- a/extensions/markdown-language-features/src/preview/security.ts
+++ b/extensions/markdown-language-features/src/preview/security.ts
@@ -27,31 +27,37 @@ export interface ContentSecurityPolicyArbiter {
 }
 
 export class ExtensionContentSecurityPolicyArbiter implements ContentSecurityPolicyArbiter {
-	private readonly _old_trusted_workspace_key = 'trusted_preview_workspace:';
-	private readonly _security_level_key = 'preview_security_level:';
-	private readonly _should_disable_security_warning_key = 'preview_should_show_security_warning:';
+	readonly #old_trusted_workspace_key = 'trusted_preview_workspace:';
+	readonly #security_level_key = 'preview_security_level:';
+	readonly #should_disable_security_warning_key = 'preview_should_show_security_warning:';
+
+	readonly #globalState: vscode.Memento;
+	readonly #workspaceState: vscode.Memento;
 
 	constructor(
-		private readonly _globalState: vscode.Memento,
-		private readonly _workspaceState: vscode.Memento
-	) { }
+		globalState: vscode.Memento,
+		workspaceState: vscode.Memento
+	) {
+		this.#globalState = globalState;
+		this.#workspaceState = workspaceState;
+	}
 
 	public getSecurityLevelForResource(resource: vscode.Uri): MarkdownPreviewSecurityLevel {
 		// Use new security level setting first
-		const level = this._globalState.get<MarkdownPreviewSecurityLevel | undefined>(this._security_level_key + this._getRoot(resource), undefined);
+		const level = this.#globalState.get<MarkdownPreviewSecurityLevel | undefined>(this.#security_level_key + this.#getRoot(resource), undefined);
 		if (typeof level !== 'undefined') {
 			return level;
 		}
 
 		// Fallback to old trusted workspace setting
-		if (this._globalState.get<boolean>(this._old_trusted_workspace_key + this._getRoot(resource), false)) {
+		if (this.#globalState.get<boolean>(this.#old_trusted_workspace_key + this.#getRoot(resource), false)) {
 			return MarkdownPreviewSecurityLevel.AllowScriptsAndAllContent;
 		}
 		return MarkdownPreviewSecurityLevel.Strict;
 	}
 
 	public setSecurityLevelForResource(resource: vscode.Uri, level: MarkdownPreviewSecurityLevel): Thenable<void> {
-		return this._globalState.update(this._security_level_key + this._getRoot(resource), level);
+		return this.#globalState.update(this.#security_level_key + this.#getRoot(resource), level);
 	}
 
 	public shouldAllowSvgsForResource(resource: vscode.Uri) {
@@ -60,14 +66,14 @@ export class ExtensionContentSecurityPolicyArbiter implements ContentSecurityPol
 	}
 
 	public shouldDisableSecurityWarnings(): boolean {
-		return this._workspaceState.get<boolean>(this._should_disable_security_warning_key, false);
+		return this.#workspaceState.get<boolean>(this.#should_disable_security_warning_key, false);
 	}
 
 	public setShouldDisableSecurityWarning(disabled: boolean): Thenable<void> {
-		return this._workspaceState.update(this._should_disable_security_warning_key, disabled);
+		return this.#workspaceState.update(this.#should_disable_security_warning_key, disabled);
 	}
 
-	private _getRoot(resource: vscode.Uri): vscode.Uri {
+	#getRoot(resource: vscode.Uri): vscode.Uri {
 		if (vscode.workspace.workspaceFolders) {
 			const folderForResource = vscode.workspace.getWorkspaceFolder(resource);
 			if (folderForResource) {
@@ -85,10 +91,16 @@ export class ExtensionContentSecurityPolicyArbiter implements ContentSecurityPol
 
 export class PreviewSecuritySelector {
 
+	readonly #cspArbiter: ContentSecurityPolicyArbiter;
+	readonly #webviewManager: MarkdownPreviewManager;
+
 	public constructor(
-		private readonly _cspArbiter: ContentSecurityPolicyArbiter,
-		private readonly _webviewManager: MarkdownPreviewManager
-	) { }
+		cspArbiter: ContentSecurityPolicyArbiter,
+		webviewManager: MarkdownPreviewManager
+	) {
+		this.#cspArbiter = cspArbiter;
+		this.#webviewManager = webviewManager;
+	}
 
 	public async showSecuritySelectorForResource(resource: vscode.Uri): Promise<void> {
 		interface PreviewSecurityPickItem extends vscode.QuickPickItem {
@@ -99,7 +111,7 @@ export class PreviewSecuritySelector {
 			return when ? '• ' : '';
 		}
 
-		const currentSecurityLevel = this._cspArbiter.getSecurityLevelForResource(resource);
+		const currentSecurityLevel = this.#cspArbiter.getSecurityLevelForResource(resource);
 		const selection = await vscode.window.showQuickPick<PreviewSecurityPickItem>(
 			[
 				{
@@ -124,7 +136,7 @@ export class PreviewSecuritySelector {
 					description: ''
 				}, {
 					type: 'toggle',
-					label: this._cspArbiter.shouldDisableSecurityWarnings()
+					label: this.#cspArbiter.shouldDisableSecurityWarnings()
 						? vscode.l10n.t("Enable preview security warnings in this workspace")
 						: vscode.l10n.t("Disable preview security warning in this workspace"),
 					description: vscode.l10n.t("Does not affect the content security level")
@@ -142,12 +154,12 @@ export class PreviewSecuritySelector {
 		}
 
 		if (selection.type === 'toggle') {
-			this._cspArbiter.setShouldDisableSecurityWarning(!this._cspArbiter.shouldDisableSecurityWarnings());
-			this._webviewManager.refresh();
+			this.#cspArbiter.setShouldDisableSecurityWarning(!this.#cspArbiter.shouldDisableSecurityWarnings());
+			this.#webviewManager.refresh();
 			return;
 		} else {
-			await this._cspArbiter.setSecurityLevelForResource(resource, selection.type);
+			await this.#cspArbiter.setSecurityLevelForResource(resource, selection.type);
 		}
-		this._webviewManager.refresh();
+		this.#webviewManager.refresh();
 	}
 }
diff --git a/extensions/markdown-language-features/src/preview/topmostLineMonitor.ts b/extensions/markdown-language-features/src/preview/topmostLineMonitor.ts
index d676fa9ffbc..59fdbb13cfd 100644
--- a/extensions/markdown-language-features/src/preview/topmostLineMonitor.ts
+++ b/extensions/markdown-language-features/src/preview/topmostLineMonitor.ts
@@ -15,10 +15,10 @@ export interface LastScrollLocation {
 
 export class TopmostLineMonitor extends Disposable {
 
-	private readonly _pendingUpdates = new ResourceMap<number>();
-	private readonly _throttle = 50;
-	private readonly _previousTextEditorInfo = new ResourceMap<LastScrollLocation>();
-	private readonly _previousStaticEditorInfo = new ResourceMap<LastScrollLocation>();
+	readonly #pendingUpdates = new ResourceMap<number>();
+	readonly #throttle = 50;
+	readonly #previousTextEditorInfo = new ResourceMap<LastScrollLocation>();
+	readonly #previousStaticEditorInfo = new ResourceMap<LastScrollLocation>();
 
 	constructor() {
 		super();
@@ -39,32 +39,32 @@ export class TopmostLineMonitor extends Disposable {
 		}));
 	}
 
-	private readonly _onChanged = this._register(new vscode.EventEmitter<{ readonly resource: vscode.Uri; readonly line: number }>());
-	public readonly onDidChanged = this._onChanged.event;
+	readonly #onChanged = this._register(new vscode.EventEmitter<{ readonly resource: vscode.Uri; readonly line: number }>());
+	public readonly onDidChanged = this.#onChanged.event;
 
 	public setPreviousStaticEditorLine(scrollLocation: LastScrollLocation): void {
-		this._previousStaticEditorInfo.set(scrollLocation.uri, scrollLocation);
+		this.#previousStaticEditorInfo.set(scrollLocation.uri, scrollLocation);
 	}
 
 	public getPreviousStaticEditorLineByUri(resource: vscode.Uri): number | undefined {
-		const scrollLoc = this._previousStaticEditorInfo.get(resource);
-		this._previousStaticEditorInfo.delete(resource);
+		const scrollLoc = this.#previousStaticEditorInfo.get(resource);
+		this.#previousStaticEditorInfo.delete(resource);
 		return scrollLoc?.line;
 	}
 
 
 	public setPreviousTextEditorLine(scrollLocation: LastScrollLocation): void {
-		this._previousTextEditorInfo.set(scrollLocation.uri, scrollLocation);
+		this.#previousTextEditorInfo.set(scrollLocation.uri, scrollLocation);
 	}
 
 	public getPreviousTextEditorLineByUri(resource: vscode.Uri): number | undefined {
-		const scrollLoc = this._previousTextEditorInfo.get(resource);
-		this._previousTextEditorInfo.delete(resource);
+		const scrollLoc = this.#previousTextEditorInfo.get(resource);
+		this.#previousTextEditorInfo.delete(resource);
 		return scrollLoc?.line;
 	}
 
 	public getPreviousStaticTextEditorLineByUri(resource: vscode.Uri): number | undefined {
-		const state = this._previousStaticEditorInfo.get(resource);
+		const state = this.#previousStaticEditorInfo.get(resource);
 		return state?.line;
 	}
 
@@ -72,20 +72,20 @@ export class TopmostLineMonitor extends Disposable {
 		resource: vscode.Uri,
 		line: number
 	) {
-		if (!this._pendingUpdates.has(resource)) {
+		if (!this.#pendingUpdates.has(resource)) {
 			// schedule update
 			setTimeout(() => {
-				if (this._pendingUpdates.has(resource)) {
-					this._onChanged.fire({
+				if (this.#pendingUpdates.has(resource)) {
+					this.#onChanged.fire({
 						resource,
-						line: this._pendingUpdates.get(resource) as number
+						line: this.#pendingUpdates.get(resource) as number
 					});
-					this._pendingUpdates.delete(resource);
+					this.#pendingUpdates.delete(resource);
 				}
-			}, this._throttle);
+			}, this.#throttle);
 		}
 
-		this._pendingUpdates.set(resource, line);
+		this.#pendingUpdates.set(resource, line);
 	}
 }
 
diff --git a/extensions/markdown-language-features/src/telemetryReporter.ts b/extensions/markdown-language-features/src/telemetryReporter.ts
index 808acc4ceab..059e468aa54 100644
--- a/extensions/markdown-language-features/src/telemetryReporter.ts
+++ b/extensions/markdown-language-features/src/telemetryReporter.ts
@@ -24,21 +24,21 @@ const nullReporter = new class NullTelemetryReporter implements TelemetryReporte
 };
 
 class ExtensionReporter implements TelemetryReporter {
-	private readonly _reporter: VSCodeTelemetryReporter;
+	readonly #reporter: VSCodeTelemetryReporter;
 
 	constructor(
 		packageInfo: IPackageInfo
 	) {
-		this._reporter = new VSCodeTelemetryReporter(packageInfo.aiKey);
+		this.#reporter = new VSCodeTelemetryReporter(packageInfo.aiKey);
 	}
 	sendTelemetryEvent(eventName: string, properties?: {
 		[key: string]: string;
 	}) {
-		this._reporter.sendTelemetryEvent(eventName, properties);
+		this.#reporter.sendTelemetryEvent(eventName, properties);
 	}
 
 	dispose() {
-		this._reporter.dispose();
+		this.#reporter.dispose();
 	}
 }
 
diff --git a/extensions/markdown-language-features/src/test/engine.ts b/extensions/markdown-language-features/src/test/engine.ts
index 31d780850b5..7778ab7b05f 100644
--- a/extensions/markdown-language-features/src/test/engine.ts
+++ b/extensions/markdown-language-features/src/test/engine.ts
@@ -13,11 +13,11 @@ const emptyContributions = new class implements MarkdownContributionProvider {
 	readonly extensionUri = vscode.Uri.file('/');
 	readonly contributions = MarkdownContributions.Empty;
 
-	private readonly _onContributionsChanged = new vscode.EventEmitter<this>();
-	readonly onContributionsChanged = this._onContributionsChanged.event;
+	readonly #onContributionsChanged = new vscode.EventEmitter<this>();
+	readonly onContributionsChanged = this.#onContributionsChanged.event;
 
 	dispose() {
-		this._onContributionsChanged.dispose();
+		this.#onContributionsChanged.dispose();
 	}
 };
 
diff --git a/extensions/markdown-language-features/src/util/async.ts b/extensions/markdown-language-features/src/util/async.ts
index 49bcbe6402b..90b2a40ed2c 100644
--- a/extensions/markdown-language-features/src/util/async.ts
+++ b/extensions/markdown-language-features/src/util/async.ts
@@ -10,55 +10,55 @@ export interface ITask<T> {
 export class Delayer<T> {
 
 	public defaultDelay: number;
-	private _timeout: any; // Timer
-	private _cancelTimeout: Promise<T | null> | null;
-	private _onSuccess: ((value: T | PromiseLike<T> | undefined) => void) | null;
-	private _task: ITask<T> | null;
+	#timeout: any; // Timer
+	#cancelTimeout: Promise<T | null> | null;
+	#onSuccess: ((value: T | PromiseLike<T> | undefined) => void) | null;
+	#task: ITask<T> | null;
 
 	constructor(defaultDelay: number) {
 		this.defaultDelay = defaultDelay;
-		this._timeout = null;
-		this._cancelTimeout = null;
-		this._onSuccess = null;
-		this._task = null;
+		this.#timeout = null;
+		this.#cancelTimeout = null;
+		this.#onSuccess = null;
+		this.#task = null;
 	}
 
 	dispose() {
-		this._doCancelTimeout();
+		this.#doCancelTimeout();
 	}
 
 	public trigger(task: ITask<T>, delay: number = this.defaultDelay): Promise<T | null> {
-		this._task = task;
+		this.#task = task;
 		if (delay >= 0) {
-			this._doCancelTimeout();
+			this.#doCancelTimeout();
 		}
 
-		if (!this._cancelTimeout) {
-			this._cancelTimeout = new Promise<T | undefined>((resolve) => {
-				this._onSuccess = resolve;
+		if (!this.#cancelTimeout) {
+			this.#cancelTimeout = new Promise<T | undefined>((resolve) => {
+				this.#onSuccess = resolve;
 			}).then(() => {
-				this._cancelTimeout = null;
-				this._onSuccess = null;
-				const result = this._task?.() ?? null;
-				this._task = null;
+				this.#cancelTimeout = null;
+				this.#onSuccess = null;
+				const result = this.#task?.() ?? null;
+				this.#task = null;
 				return result;
 			});
 		}
 
-		if (delay >= 0 || this._timeout === null) {
-			this._timeout = setTimeout(() => {
-				this._timeout = null;
-				this._onSuccess?.(undefined);
+		if (delay >= 0 || this.#timeout === null) {
+			this.#timeout = setTimeout(() => {
+				this.#timeout = null;
+				this.#onSuccess?.(undefined);
 			}, delay >= 0 ? delay : this.defaultDelay);
 		}
 
-		return this._cancelTimeout;
+		return this.#cancelTimeout;
 	}
 
-	private _doCancelTimeout(): void {
-		if (this._timeout !== null) {
-			clearTimeout(this._timeout);
-			this._timeout = null;
+	#doCancelTimeout(): void {
+		if (this.#timeout !== null) {
+			clearTimeout(this.#timeout);
+			this.#timeout = null;
 		}
 	}
 }
diff --git a/extensions/markdown-language-features/src/util/cancellation.ts b/extensions/markdown-language-features/src/util/cancellation.ts
index 45556cb6f1d..a0aa6583864 100644
--- a/extensions/markdown-language-features/src/util/cancellation.ts
+++ b/extensions/markdown-language-features/src/util/cancellation.ts
@@ -6,8 +6,8 @@
 import * as vscode from 'vscode';
 
 export const noopToken: vscode.CancellationToken = new class implements vscode.CancellationToken {
-	private readonly _onCancellationRequestedEmitter = new vscode.EventEmitter<void>();
-	onCancellationRequested = this._onCancellationRequestedEmitter.event;
+	readonly #onCancellationRequestedEmitter = new vscode.EventEmitter<void>();
+	onCancellationRequested = this.#onCancellationRequestedEmitter.event;
 
 	get isCancellationRequested() { return false; }
 };
diff --git a/extensions/markdown-language-features/src/util/dispose.ts b/extensions/markdown-language-features/src/util/dispose.ts
index f222642908e..064302623fd 100644
--- a/extensions/markdown-language-features/src/util/dispose.ts
+++ b/extensions/markdown-language-features/src/util/dispose.ts
@@ -28,20 +28,20 @@ export interface IDisposable {
 }
 
 export abstract class Disposable {
-	private _isDisposed = false;
+	#isDisposed = false;
 
 	protected _disposables: vscode.Disposable[] = [];
 
 	public dispose(): any {
-		if (this._isDisposed) {
+		if (this.#isDisposed) {
 			return;
 		}
-		this._isDisposed = true;
+		this.#isDisposed = true;
 		disposeAll(this._disposables);
 	}
 
 	protected _register<T extends IDisposable>(value: T): T {
-		if (this._isDisposed) {
+		if (this.#isDisposed) {
 			value.dispose();
 		} else {
 			this._disposables.push(value);
@@ -50,6 +50,6 @@ export abstract class Disposable {
 	}
 
 	protected get isDisposed() {
-		return this._isDisposed;
+		return this.#isDisposed;
 	}
 }
diff --git a/extensions/markdown-language-features/src/util/openDocumentLink.ts b/extensions/markdown-language-features/src/util/openDocumentLink.ts
index 285dd91029b..a033aaffe75 100644
--- a/extensions/markdown-language-features/src/util/openDocumentLink.ts
+++ b/extensions/markdown-language-features/src/util/openDocumentLink.ts
@@ -14,16 +14,20 @@ enum OpenMarkdownLinks {
 
 export class MdLinkOpener {
 
+	readonly #client: MdLanguageClient;
+
 	constructor(
-		private readonly _client: MdLanguageClient,
-	) { }
+		client: MdLanguageClient,
+	) {
+		this.#client = client;
+	}
 
 	public async resolveDocumentLink(linkText: string, fromResource: vscode.Uri): Promise<proto.ResolvedDocumentLinkTarget> {
-		return this._client.resolveLinkTarget(linkText, fromResource);
+		return this.#client.resolveLinkTarget(linkText, fromResource);
 	}
 
 	public async openDocumentLink(linkText: string, fromResource: vscode.Uri, viewColumn?: vscode.ViewColumn): Promise<void> {
-		const resolved = await this._client.resolveLinkTarget(linkText, fromResource);
+		const resolved = await this.#client.resolveLinkTarget(linkText, fromResource);
 		if (!resolved) {
 			return;
 		}
diff --git a/extensions/markdown-language-features/src/util/resourceMap.ts b/extensions/markdown-language-features/src/util/resourceMap.ts
index 99dd71a8718..10eb8e22890 100644
--- a/extensions/markdown-language-features/src/util/resourceMap.ts
+++ b/extensions/markdown-language-features/src/util/resourceMap.ts
@@ -11,53 +11,53 @@ const defaultResourceToKey = (resource: vscode.Uri): string => resource.toString
 
 export class ResourceMap<T> {
 
-	private readonly _map = new Map<string, { readonly uri: vscode.Uri; readonly value: T }>();
+	readonly #map = new Map<string, { readonly uri: vscode.Uri; readonly value: T }>();
 
-	private readonly _toKey: ResourceToKey;
+	readonly #toKey: ResourceToKey;
 
 	constructor(toKey: ResourceToKey = defaultResourceToKey) {
-		this._toKey = toKey;
+		this.#toKey = toKey;
 	}
 
 	public set(uri: vscode.Uri, value: T): this {
-		this._map.set(this._toKey(uri), { uri, value });
+		this.#map.set(this.#toKey(uri), { uri, value });
 		return this;
 	}
 
 	public get(resource: vscode.Uri): T | undefined {
-		return this._map.get(this._toKey(resource))?.value;
+		return this.#map.get(this.#toKey(resource))?.value;
 	}
 
 	public has(resource: vscode.Uri): boolean {
-		return this._map.has(this._toKey(resource));
+		return this.#map.has(this.#toKey(resource));
 	}
 
 	public get size(): number {
-		return this._map.size;
+		return this.#map.size;
 	}
 
 	public clear(): void {
-		this._map.clear();
+		this.#map.clear();
 	}
 
 	public delete(resource: vscode.Uri): boolean {
-		return this._map.delete(this._toKey(resource));
+		return this.#map.delete(this.#toKey(resource));
 	}
 
 	public *values(): IterableIterator<T> {
-		for (const entry of this._map.values()) {
+		for (const entry of this.#map.values()) {
 			yield entry.value;
 		}
 	}
 
 	public *keys(): IterableIterator<vscode.Uri> {
-		for (const entry of this._map.values()) {
+		for (const entry of this.#map.values()) {
 			yield entry.uri;
 		}
 	}
 
 	public *entries(): IterableIterator<[vscode.Uri, T]> {
-		for (const entry of this._map.values()) {
+		for (const entry of this.#map.values()) {
 			yield [entry.uri, entry.value];
 		}
 	}