Optionalcode: stringOptionalretryAfter: numberOptionalerrorId: stringOptionaldegraded: stringOptionalcauseOptionalcodeOptionaldegradedOptionalerrorThe server's error reference (err_…) on a persisted 5xx — the id a
server_errors row is keyed by, and the thing to quote to support.
Present only when the server minted one (a real server fault; never on a
4xx or a transport failure). 0.56.0.
OptionalretryOptionalstackStaticstackThe Error.stackTraceLimit property specifies the number of stack frames
collected by a stack trace (whether generated by new Error().stack or
Error.captureStackTrace(obj)).
The default value is 10 but may be set to any valid JavaScript number. Changes
will affect any stack trace captured after the value has been changed.
If set to a non-number value, or set to a negative number, stack traces will not capture any frames.
StaticcaptureCreates a .stack property on targetObject, which when accessed returns
a string representing the location in the code at which
Error.captureStackTrace() was called.
const myObject = {};
Error.captureStackTrace(myObject);
myObject.stack; // Similar to `new Error().stack`
The first line of the trace will be prefixed with
${myObject.name}: ${myObject.message}.
The optional constructorOpt argument accepts a function. If given, all frames
above constructorOpt, including constructorOpt, will be omitted from the
generated stack trace.
The constructorOpt argument is useful for hiding implementation
details of error generation from the user. For instance:
function a() {
b();
}
function b() {
c();
}
function c() {
// Create an error without stack trace to avoid calculating the stack trace twice.
const { stackTraceLimit } = Error;
Error.stackTraceLimit = 0;
const error = new Error();
Error.stackTraceLimit = stackTraceLimit;
// Capture the stack trace above function b
Error.captureStackTrace(error, b); // Neither function c, nor b is included in the stack trace
throw error;
}
a();
OptionalconstructorOpt: FunctionStaticprepare
Why a refusal came from a DEGRADED rung rather than the ordinary limit (CR-1040). Today one value:
'limiter_unreachable'— the rate limiter is down and the conversation is being served at a temporary half budget, so arate_limited429 carrying it is NOT your permanent quota: back off forretryAfterand expect the full budget back. Absent on every ordinary failure.