feat: optimize documents printing

packages/server/src/lib/Chromiumly/GotenbergUtils.ts

@@ -0,0 +1,25 @@
+import FormData from 'form-data';
+import fetch from 'node-fetch';
+
+export class GotenbergUtils {
+  public static assert(condition: boolean, message: string): asserts condition {
+    if (!condition) {
+      throw new Error(message);
+    }
+  }
+
+  public static async fetch(endpoint: string, data: FormData): Promise<Buffer> {
+    const response = await fetch(endpoint, {
+      method: 'post',
+      body: data,
+      headers: {
+        ...data.getHeaders(),
+      },
+    });
+
+    if (!response.ok) {
+      throw new Error(`${response.status} ${response.statusText}`);
+    }
+    return response.buffer();
+  }
+}