From ffb0349b41b940e9415587a6e12d571cd9a55fbe Mon Sep 17 00:00:00 2001
From: Derek McGowan <derek@mcg.dev>
Date: Tue, 2 Jul 2024 16:16:36 -0700
Subject: [PATCH] Update Resolve function to support Is interface

The Is interface may be used to resolve if no other unwrap interface is
implemented. This interface is safe to use in this situation, unlike
errors.Is, since the error should not be unwrapped further.

Signed-off-by: Derek McGowan <derek@mcg.dev>
---
 resolve.go | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/resolve.go b/resolve.go
index ea049da..852d591 100644
--- a/resolve.go
+++ b/resolve.go
@@ -111,6 +111,30 @@ func firstError(err error) error {
 				}
 			}
 			return nil
+		case interface{ Is(error) bool }:
+			for _, target := range []error{ErrUnknown,
+				ErrInvalidArgument,
+				ErrNotFound,
+				ErrAlreadyExists,
+				ErrPermissionDenied,
+				ErrResourceExhausted,
+				ErrFailedPrecondition,
+				ErrConflict,
+				ErrNotModified,
+				ErrAborted,
+				ErrOutOfRange,
+				ErrNotImplemented,
+				ErrInternal,
+				ErrUnavailable,
+				ErrDataLoss,
+				ErrUnauthenticated,
+				context.DeadlineExceeded,
+				context.Canceled} {
+				if e.Is(target) {
+					return target
+				}
+			}
+			return nil
 		default:
 			return nil
 		}