A library of errors that can be thrown by the network.

The info passed to this package's error constructors is application-defined public metadata. error.toJSON() and the error middleware preserve its object or array unchanged, together with the explicit error message, code and status. This includes trace/resource IDs, conflict arrays, validation errors and authentication redirects. The middleware also logs status, code, the public message and this declared public metadata for audit correlation. Native error types and stack call sites are retained only in server logs; the complete native message prefix is excluded even when multiline. RPC logs retain operation identity, region and network without raw URLs, forwarded context, credentials or request/response bodies.

Authors must keep public messages and info free of credentials and submitted secrets. RPC must not attach bearer tokens, forwarded request context or raw request payloads to public error metadata. Public info is an explicit contract, not a container for private diagnostics.

error.cause() remains available internally but is never serialized. SDK info() still exposes internal diagnostics, including inherited cause info; those inherited fields are not implicitly published. Errors constructed outside this package are undeclared. Native error stacks, causes, arbitrary toJSON methods and diagnostic info properties are not public response fields. Undeclared native server errors use a generic public message. Middleware does not log raw errors, native messages, causes, or request bodies, queries or parameters.