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

src/utils/create/index.ts

@@ -0,0 +1,14 @@
+import { createBEM } from './bem';
+import { createComponent } from './component';
+import { createI18N } from './i18n';
+
+type CreateNamespaceReturn = [
+  ReturnType<typeof createComponent>,
+  ReturnType<typeof createBEM>,
+  ReturnType<typeof createI18N>
+];
+
+export function createNamespace(name: string): CreateNamespaceReturn {
+  name = 'van-' + name;
+  return [createComponent(name), createBEM(name), createI18N(name)];
+}