Merge from vscode e3c4990c67c40213af168300d1cfeb71d680f877 (#16569)

extensions/markdown-math/src/extension.ts

@@ -0,0 +1,31 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+import * as vscode from 'vscode';
+
+const enabledSetting = 'markdown.math.enabled';
+
+export function activate(context: vscode.ExtensionContext) {
+	function isEnabled(): boolean {
+		const config = vscode.workspace.getConfiguration('markdown');
+		console.log(config.get<boolean>('math.enabled', true));
+		return config.get<boolean>('math.enabled', true);
+	}
+
+	vscode.workspace.onDidChangeConfiguration(e => {
+		if (e.affectsConfiguration(enabledSetting)) {
+			vscode.commands.executeCommand('markdown.api.reloadPlugins');
+		}
+	}, undefined, context.subscriptions);
+
+	return {
+		extendMarkdownIt(md: any) {
+			if (isEnabled()) {
+				const katex = require('@iktakahiro/markdown-it-katex');
+				return md.use(katex);
+			}
+			return md;
+		}
+	};
+}

extensions/markdown-math/src/types.d.ts

@@ -0,0 +1 @@
+/// <reference path='../../../src/vs/vscode.d.ts'/>