callback events

src/utils/context.ts

@@ -1,7 +1,13 @@
 import { UseableFetcher } from '@/fetchers/types';
 
-export interface ScrapeContext {
+export type ScrapeContext = {
   proxiedFetcher: UseableFetcher;
   fetcher: UseableFetcher;
   progress(val: number): void;
-}
+};
+
+export type EmbedInput = {
+  url: string;
+};
+
+export type EmbedScrapeContext = EmbedInput & ScrapeContext;

src/utils/errors.ts

@@ -0,0 +1,6 @@
+export class NotFoundError extends Error {
+  constructor(reason?: string) {
+    super(`Couldn't found a stream: ${reason ?? 'not found'}`);
+    this.name = 'NotFoundError';
+  }
+}