CircuitsLeaseConfigError

Defined in: packages/server/src/circuits/subscribe.ts:93

The engine’s subscription lease is shorter than this deployment’s token TTL — a configuration fault, not a request one.

The control plane renews every live claim on exactly one cadence: the token re-mint, which the client drives at expiresAt - skew and which therefore lands at most ttlSeconds apart. The engine releases a claim not renewed within leaseSeconds (CIRCUITS_SHAPE_IDLE_SECS). So a deployment whose lease window is under two TTLs has no margin at all: one refresh delayed by a retry, a redeploy, or a sleeping tab, and a live session’s shape goes dormant underneath it. The factor of two is the margin for exactly one missed refresh.

Refused loudly rather than papered over, because both numbers are the operator’s and neither the subject nor the client can do anything about either. The routes answer 503 — “this deployment, not you” — and never a denial: a client told it lost entitlement truncates its rows.

Extends

• Error

Constructors

Constructor

new CircuitsLeaseConfigError(leaseSeconds, ttlSeconds): CircuitsLeaseConfigError

Defined in: packages/server/src/circuits/subscribe.ts:99

Parameters

leaseSeconds

number

ttlSeconds

number

Returns

CircuitsLeaseConfigError

Overrides

Error.constructor

Properties

cause?

optional cause?: unknown

Defined in: node_modules/.bun/typescript@6.0.3/node_modules/typescript/lib/lib.es2022.error.d.ts:24

Inherited from

Error.cause

---

leaseSeconds

readonly leaseSeconds: number

Defined in: packages/server/src/circuits/subscribe.ts:95

The engine’s CIRCUITS_SHAPE_IDLE_SECS, as the create response reported it.

---

message

message: string

Defined in: node_modules/.bun/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:1075

Inherited from

Error.message

---

name

name: string

Defined in: node_modules/.bun/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:1074

Inherited from

Error.name

---

stack?

optional stack?: string

Defined in: node_modules/.bun/typescript@6.0.3/node_modules/typescript/lib/lib.es5.d.ts:1076

Inherited from

Error.stack

---

ttlSeconds

readonly ttlSeconds: number

Defined in: packages/server/src/circuits/subscribe.ts:97

The stream-token TTL this control plane is configured with.

---

stackTraceLimit

static stackTraceLimit: number

Defined in: node_modules/.bun/@types+node@26.6.3/node_modules/@types/node/globals.d.ts:67

The 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.

Inherited from

Error.stackTraceLimit

Methods

captureStackTrace()

static captureStackTrace(targetObject, constructorOpt?): void

Defined in: node_modules/.bun/@types+node@26.6.3/node_modules/@types/node/globals.d.ts:51

Creates 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();

Parameters

targetObject

object

constructorOpt?

Function

Returns

void

Inherited from

Error.captureStackTrace

---

prepareStackTrace()

static prepareStackTrace(err, stackTraces): any

Defined in: node_modules/.bun/@types+node@26.6.3/node_modules/@types/node/globals.d.ts:55

Parameters

err

Error

stackTraces

CallSite[]

Returns

any

See

https://v8.dev/docs/stack-trace-api#customizing-stack-traces

Inherited from

Error.prepareStackTrace