[improvement] rename packages dir to src (#3659)

src/utils/create/i18n.ts

@@ -0,0 +1,12 @@
+import { get } from '..';
+import { camelize } from '../format/string';
+import locale from '../../locale';
+
+export function createI18N(name: string) {
+  const prefix = camelize(name) + '.';
+
+  return function (path: string, ...args: any[]): string {
+    const message = get(locale.messages(), prefix + path) || get(locale.messages(), path);
+    return typeof message === 'function' ? message(...args) : message;
+  };
+}