Move strings to own file

extensions/markdown/preview-src/csp.ts

@@ -4,11 +4,9 @@
  *--------------------------------------------------------------------------------------------*/
 
 import { getSettings } from './settings';
+import { getStrings } from './strings';
 import { postCommand } from './messaging';
 
-const strings = JSON.parse(document.getElementById('vscode-markdown-preview-data').getAttribute('data-strings'));
-const settings = getSettings();
-
 /**
  * Shows an alert when there is a content security policy violation.
  */
@@ -28,6 +26,9 @@ export class CspAlerter {
 	}
 
 	private showCspWarning() {
+		const strings = getStrings();
+		const settings = getSettings();
+
 		if (this.didShow || settings.disableSecurityWarnings) {
 			return;
 		}

extensions/markdown/preview-src/strings.ts

+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+export function getStrings(): { [key: string]: string } {
+	return JSON.parse(document.getElementById('vscode-markdown-preview-data').getAttribute('data-strings'));
+}