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[vite-plugin] Preserve v1 remote-binding error properties #16542

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petebacondarwin merged 1 commit into from
Oct 28, 2026
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[vite-plugin] Preserve v1 remote-binding error properties #16542

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7 changes: 7 additions & 0 deletions .changeset/v1-remote-binding-error-properties.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
---
"@cloudflare/vite-plugin": patch
---

Preserve machine-readable error properties from remote bindings

Enable enhanced error serialization on the remote proxy Worker used by Vite plugin v1. Combined with Miniflare 5.20261023.1-beta, remote binding errors retain properties such as `code` and `numericCode` so Worker code can handle them without parsing error messages.
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4 changes: 3 additions & 1 deletion packages/remote-bindings/src/start-remote-proxy-session.ts
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Expand Up @@ -122,7 +122,9 @@ export async function startRemoteProxySession(
cliDisplayName: options.cliDisplayName,
entrypointSource: remoteBindingsWorkerSource,
compatibilityDate: "2025-04-28",
compatibilityFlags: [],
// Keep custom error names and properties (for example Artifacts `code` and
// `numericCode`) when errors cross from the remote binding into this worker.
compatibilityFlags: ["enhanced_error_serialization"],
complianceRegion: options.complianceRegion,
bindings: rawBindings,
auth: getRemoteBindingsAuthHook(
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