test(vtt-thumbnail): [PKG-VTT-THUMB-04] verify historical module forms and type conflicts

refactor/fixtures/consumers/vtt-thumbnail-commonjs.ts

@@ -0,0 +1,11 @@
+import type Artplayer from 'artplayer'
+// eslint-disable-next-line ts/no-require-imports -- Exercise historical export-assignment consumers.
+import plugin = require('artplayer-plugin-vtt-thumbnail')
+
+const vtt = plugin
+declare const art: Artplayer
+const options: Parameters<typeof vtt>[0] = {}
+const result: ReturnType<ReturnType<typeof vtt>> = { name: 'artplayerPluginVttThumbnail' }
+const replacement: typeof vtt = (_option: Parameters<typeof vtt>[0]) => (_art: Artplayer) => result
+void vtt(options)(art).name
+void replacement

refactor/fixtures/consumers/vtt-thumbnail-export-alternatives.ts

@@ -0,0 +1,7 @@
+import type { Factory } from 'artplayer-plugin-vtt-thumbnail'
+
+declare const replacement: Factory
+const required: Factory & { default: Factory } = replacement
+const optional: Factory & { default?: Factory } = replacement
+optional.default({})
+void required