FaultCode (@defjs/core)

@defjs/core · Type

Signature

type FaultCode =
  | "CAP_BUFFER_EXCEEDED"
  | "CAP_QUEUE_OVERFLOW"
  | "ENV_UNSUPPORTED"
  | "EXT_HOOK_FAILED"
  | "EXT_INTERCEPTOR_FAILED"
  | "EXT_OBSERVER_FAILED"
  | "HTTP_STATUS"
  | "NET_ABORTED"
  | "NET_BODY_INCOMPLETE"
  | "NET_TIMEOUT"
  | "NET_UNREACHABLE"
  | "REQ_BUILD_FAILED"
  | "REQ_INPUT_INVALID"
  | "REQ_OPTIONS_INVALID"
  | "RES_DECODE_FAILED"
  | "RES_MEDIA_TYPE_INVALID"
  | "RES_STRUCT_MISMATCH";

The prefix before the first _ is the class; there is no separate kind field. Read the prefix for coarse triage and the whole code for an exact case:

Class	Meaning
`HTTP`	The peer answered with a non-2xx status.
`REQ`	The request never left: input, request options, or build.
`NET`	No usable response: cancel, timeout, connect, truncated body.
`RES`	A response arrived but could not be read as declared.
`EXT`	Code you attached to the pipeline threw.
`CAP`	A declared buffer or queue limit was exceeded.
`ENV`	The host runtime lacks a required capability.

The set is closed on purpose: it keeps switch (fault.code) exhaustive. Extensions report their own detail through cause, not through a new code.