fix(blob): Allow for Request object to be a body of objects (#767)

* fix(blob): Allow for Request object to be a body of objects

Before this commit, you could not pass Request objects because of a bug in the
module we used to detect plain objects. This is now fixed.

* lockfile

.changeset/pretty-tomatoes-jump.md

@@ -0,0 +1,5 @@
+---
+'@vercel/blob': patch
+---
+
+Fix bad detection of Request being a plain object

packages/blob/package.json

@@ -63,7 +63,6 @@
     "async-retry": "^1.3.3",
     "bytes": "^3.1.2",
     "is-buffer": "^2.0.5",
-    "is-plain-object": "^5.0.0",
     "undici": "^5.28.4"
   },
   "devDependencies": {

packages/blob/src/helpers.ts

@@ -63,3 +63,21 @@ export function getDownloadUrl(blobUrl: string): string {
 
   return url.toString();
 }
+
+// Extracted from https://github.com/sindresorhus/is-plain-obj/blob/main/index.js
+// It's just nearly impossible to use ESM modules with our current setup
+export function isPlainObject(value: unknown): boolean {
+  if (typeof value !== 'object' || value === null) {
+    return false;
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment -- ok
+  const prototype = Object.getPrototypeOf(value);
+  return (
+    (prototype === null ||
+      prototype === Object.prototype ||
+      Object.getPrototypeOf(prototype) === null) &&
+    !(Symbol.toStringTag in value) &&
+    !(Symbol.iterator in value)
+  );
+}

packages/blob/src/multipart/create-uploader.ts

@@ -1,5 +1,8 @@
-import { isPlainObject } from 'is-plain-object';
-import { BlobError, type CommonCreateBlobOptions } from '../helpers';
+import {
+  BlobError,
+  isPlainObject,
+  type CommonCreateBlobOptions,
+} from '../helpers';
 import type { CreatePutMethodOptions, PutBody } from '../put-helpers';
 import { createPutHeaders, createPutOptions } from '../put-helpers';
 import { completeMultipartUpload } from './complete';

packages/blob/src/multipart/upload.ts

@@ -1,12 +1,12 @@
 import bytes from 'bytes';
 import type { BodyInit } from 'undici';
-import { isPlainObject } from 'is-plain-object';
 import { BlobServiceNotAvailable, requestApi } from '../api';
 import { debug } from '../debug';
 import {
   type CommonCreateBlobOptions,
   type BlobCommandOptions,
   BlobError,
+  isPlainObject,
 } from '../helpers';
 import { createPutHeaders, createPutOptions } from '../put-helpers';
 import type { PutBody, CreatePutMethodOptions } from '../put-helpers';

packages/blob/src/put.ts

@@ -1,8 +1,7 @@
 import type { BodyInit } from 'undici';
-import { isPlainObject } from 'is-plain-object';
 import { requestApi } from './api';
 import type { CommonCreateBlobOptions } from './helpers';
-import { BlobError } from './helpers';
+import { BlobError, isPlainObject } from './helpers';
 import { uncontrolledMultipartUpload } from './multipart/uncontrolled';
 import type {
   CreatePutMethodOptions,