feat: add multi-search, adjust types to allow type narrowing

src/endpoints/search.ts

@@ -1,5 +1,5 @@
 import { BaseEndpoint } from './base';
-import { Search } from '../types/search';
+import { MultiSearchResult, Search } from '../types/search';
 import { Collection, Company, Movie, Person, TV } from '../types';
 
 const BASE_SEARCH = '/search';
@@ -24,6 +24,10 @@ export interface PeopleSearchOptions extends SearchOptions {
   include_adult?: boolean;
 }
 
+export interface MultiSearchOptions extends SearchOptions {
+  include_adult?: boolean;
+}
+
 export class SearchEndpoint extends BaseEndpoint {
   constructor(protected readonly accessToken: string) {
     super(accessToken);
@@ -60,9 +64,14 @@ export class SearchEndpoint extends BaseEndpoint {
     return await this.api.get<Search<Person>>(`${BASE_SEARCH}/person`, options);
   }
 
-  // TODO: Multi search
-
   async tvShows(options: TvSearchOptions): Promise<Search<TV>> {
     return await this.api.get<Search<TV>>(`${BASE_SEARCH}/tv`, options);
   }
+
+  async multi(options: MultiSearchOptions): Promise<Search<MultiSearchResult>> {
+    return await this.api.get<Search<MultiSearchResult>>(
+      `${BASE_SEARCH}/multi`,
+      options
+    );
+  }
 }