Fix TS: add ambient types for dompurify/marked to stabilize dev env

Author: phantumblade

src/types/ambient.d.ts

@@ -0,0 +1,11 @@
+declare module 'dompurify' {
+  export interface Config { [key: string]: any }
+  export function sanitize(dirty: string, config?: Config): string;
+  const _default: { sanitize: typeof sanitize };
+  export default _default;
+}
+
+declare module 'marked' {
+  export function parse(src: string, options?: any): string;
+}
+