feat: implement locale switching between Simplified and Traditional Chinese with opencc-js

types/opencc-js.d.ts

@@ -0,0 +1,14 @@
+declare module 'opencc-js' {
+  interface ConverterOptions {
+    from: 'cn' | 'tw' | 'twp' | 'hk' | 'jp';
+    to: 'cn' | 'tw' | 'twp' | 'hk' | 'jp';
+  }
+
+  export function Converter(options: ConverterOptions): (text: string) => string;
+  export function HTMLConverter(
+    converter: (text: string) => string,
+    rootNode: HTMLElement,
+    fromLangTag: string,
+    toLangTag: string
+  ): void;
+}