Profile: supports webfinger

* timelines: add emptyTimeline

src/masto/timelines.ts

@@ -248,6 +248,64 @@ export type TimelineResource<R> = [
   { refetch(info?: TimelineFetchDirection): void },
 ];
 
+export const emptyTimeline = {
+  list() {
+    return emptyTimeline;
+  },
+
+  setDirection() {
+    return emptyTimeline;
+  },
+
+  async next(): Promise<IteratorResult<any, undefined>> {
+    return {
+      value: undefined,
+      done: true,
+    };
+  },
+
+  getDirection(): TimelineFetchDirection {
+    return "next";
+  },
+
+  clone() {
+    return emptyTimeline;
+  },
+
+  async return(): Promise<IteratorResult<any, undefined>> {
+    return {
+      value: undefined,
+      done: true,
+    };
+  },
+
+  async throw(e?: unknown) {
+    throw e;
+  },
+
+  async *values() {},
+  async *[Symbol.asyncIterator](): AsyncIterator<any[], undefined> {
+    return undefined;
+  },
+
+  async then<TNext, ENext>(
+    onresolve?: null | ((value: any[]) => TNext | PromiseLike<TNext>),
+    onrejected?: null | ((reason: unknown) => ENext | PromiseLike<ENext>),
+  ) {
+    try {
+      if (!onresolve) {
+        throw new TypeError("no onresolve");
+      }
+      return await onresolve([]);
+    } catch (reason) {
+      if (!onrejected) {
+        throw reason;
+      }
+      return await onrejected(reason);
+    }
+  },
+};
+
 /**
  * Create auto managed timeline controls.
  *