ProtocolResponse

Plain object accepted by Protocol.handle (same wire shape the native loader consumes). Prefer this when returning HTML or small payloads so the embedder does not convert a Fetch Response through Node streams.

Properties 

error 

error?: number;

Network error code (e.g. Chromium net error constants) instead of a successful response.

data 

data?: unknown;

String body, byte buffer view, or a Node.js Readable stream for streaming bodies.