From e79dd4bca9bac5783e2e99bf1f55a861752ddea4 Mon Sep 17 00:00:00 2001
From: Joakim Carlstein <joakim@aboviq.com>
Date: Wed, 22 Nov 2023 14:16:20 +0100
Subject: [PATCH] feat(storage-fs): serialize errors recursively if "cause" is
 an Error instance

---
 .changeset/shiny-penguins-kneel.md |  5 +++++
 packages/storage-fs/src/index.ts   | 12 +++++++++++-
 2 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/shiny-penguins-kneel.md

diff --git a/.changeset/shiny-penguins-kneel.md b/.changeset/shiny-penguins-kneel.md
new file mode 100644
index 0000000..2010d8d
--- /dev/null
+++ b/.changeset/shiny-penguins-kneel.md
@@ -0,0 +1,5 @@
+---
+'@emigrate/storage-fs': minor
+---
+
+Serialize errors recursively if they have a "cause" set to an Error instance
diff --git a/packages/storage-fs/src/index.ts b/packages/storage-fs/src/index.ts
index 05d4801..36d93d4 100644
--- a/packages/storage-fs/src/index.ts
+++ b/packages/storage-fs/src/index.ts
@@ -11,6 +11,16 @@ type SerializedError = {
   name: string;
   message: string;
   stack?: string;
+  cause?: unknown;
+};
+
+const serializeError = (error: Error): SerializedError => {
+  return {
+    name: error.name,
+    message: error.message,
+    stack: error.stack,
+    cause: error.cause instanceof Error ? serializeError(error.cause) : error.cause,
+  };
 };
 
 export default function storageFs({ filename }: StorageFsOptions): EmigrateStorage {
@@ -41,7 +51,7 @@ export default function storageFs({ filename }: StorageFsOptions): EmigrateStora
         [migration]: {
           status,
           date: new Date().toISOString(),
-          error: error ? { name: error.name, message: error.message, stack: error.stack } : undefined,
+          error: error ? serializeError(error) : undefined,
         },
       };