Feat: introduce make-fetch-happen (#44)

Build/lib/make-fetch-happen.ts

@@ -0,0 +1,23 @@
+import path from 'node:path';
+import fs from 'node:fs';
+import makeFetchHappen from 'make-fetch-happen';
+// eslint-disable-next-line @typescript-eslint/no-restricted-imports -- type only
+export type { Response as NodeFetchResponse } from 'node-fetch';
+
+const cachePath = path.resolve(__dirname, '../../.cache/__make_fetch_happen__');
+fs.mkdirSync(cachePath, { recursive: true });
+
+export const $fetch = makeFetchHappen.defaults({
+  cachePath,
+  maxSockets: 32, /**
+   * They said 15 is a good default that prevents knocking out others' routers,
+   * I disagree. 32 is a good number.
+   */
+  headers: {
+    'User-Agent': 'curl/8.9.1 (https://github.com/SukkaW/Surge)'
+  },
+  retry: {
+    retries: 5,
+    randomize: true
+  }
+});