BREAKING: remove custom implementation of Deno.Buffer.toString() (#4992)

Keep in mind Buffer.toString() still exists, but returns [object Object]. 

Reason for removal of Buffer.toString() was that it implicitly used 
TextDecoder with fixed "utf-8" encoding and no way to customize 
the encoding.

1 files changed, 1 insertions, 1 deletions

diff --git a/std/mime/multipart.ts b/std/mime/multipart.ts
index 48e32c65d..b2ac8dcdd 100644
--- a/std/mime/multipart.ts
+++ b/std/mime/multipart.ts
@@ -302,7 +302,7 @@ export class MultipartReader {
         if (maxValueBytes < 0) {
           throw new RangeError("message too large");
         }
-        const value = buf.toString();
+        const value = new TextDecoder().decode(buf.bytes());
         valueMap.set(p.formName, value);
         continue;
       }