add AsyncInterator support for Managers

src/managers/base.ts

@@ -60,6 +60,13 @@ export class BaseManager<T, T2> {
     return collection
   }
 
+  async *[Symbol.asyncIterator](): AsyncIterableIterator<T2> {
+    const arr = (await this.array()) ?? []
+    const { readable, writable } = new TransformStream()
+    arr.forEach((el) => writable.getWriter().write(el))
+    yield* readable.getIterator()
+  }
+
   /** Deletes everything from Cache */
   flush(): any {
     return this.client.cache.deleteCache(this.cacheName)

src/managers/baseChild.ts

@@ -39,4 +39,11 @@ export class BaseChildManager<T, T2> {
     }
     return collection
   }
+
+  async *[Symbol.asyncIterator](): AsyncIterableIterator<T2> {
+    const arr = (await this.array()) ?? []
+    const { readable, writable } = new TransformStream()
+    arr.forEach((el: unknown) => writable.getWriter().write(el))
+    yield* readable.getIterator()
+  }
 }

src/test/index.ts

@@ -227,6 +227,13 @@ client.on('messageCreate', async (msg: Message) => {
       })
       await msg.member?.roles.add(role)
     }
+  } else if (msg.content === '!roles') {
+    let buf = 'Roles:'
+    if (msg.member === undefined) return
+    for await (const role of msg.member.roles) {
+      buf += `\n${role.name}`
+    }
+    msg.reply(buf)
   }
 })