manifest.json にインスタンス名を反映させるように (#4619)

src/server/web/manifest.ts

@@ -0,0 +1,16 @@
+import * as Koa from 'koa';
+import * as manifest from '../../client/assets/manifest.json';
+import * as deepcopy from 'deepcopy';
+import fetchMeta from '../../misc/fetch-meta';
+
+module.exports = async (ctx: Koa.BaseContext) => {
+	const json = deepcopy(manifest);
+
+	const instance = await fetchMeta();
+
+	json.short_name = instance.name || 'Misskey';
+	json.name = instance.name || 'Misskey';
+
+	ctx.set('Cache-Control', 'max-age=300');
+	ctx.body = json;
+};