Creates the error reported for a consumer-name collision.
The requested queue
The queue already holding the consumer name
The encoded JetStream consumer name
OptionalcauseReadonlyconsumerThe JetStream consumer name both map to.
ReadonlyexistingThe queue (or, for a consumer from before 0.9.0, the durable name) already holding the name.
ReadonlyqueueThe queue this subscribe call asked for.
OptionalstackStaticstackThe 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
Thrown by
NatsBroker.subscribewhen two DIFFERENTSubscribeOptions.queuevalues map to one JetStream consumer name, or when the consumer already on the server under that name was created for another queue or another topic (M101b, V8-6).JetStream refuses
.,*,>,/,\and whitespace in a consumer name, so the broker escapes each as_plus two hex digits (orders.eu→orders_2eeu). A queue that literally spells such an escape collides with the dotted queue it encodes from; attaching both would make two independent queues split one consumer's deliveries, so the second is refused.Since
0.9.0