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CoSignUnavailableError

Defined in: src/signer/errors.ts:67

Thrown by the mpc-2p cryptographic adapter when the co-signer is unreachable or the ceremony could not complete — endpoint down, TLS failure, connection dropped mid-ceremony, timeout, a malformed/missing terminal frame, or an internal protocol anomaly. It is a transient / internal error on the throws channel (M6-0: throws are reserved for internal/config errors), distinct from a policy denial.

This is the no-silent-fallback guarantee (RFC m6-3a constraint 3 / W8): the adapter has no local-signing path, so an unavailable wire NEVER yields an { ok: true } signature and NEVER a PolicyRejection. A rejection means “the owner decided no” (audit-meaningful); a CoSignUnavailableError means “the owner did not decide” — the caller may retry the same intent (the backend’s idempotency keeps a retry safe).

Example

try {
  const result = await mpc2pSigner.sign(intent);
  if (!result.ok) handleDenial(result.rejection); // owner said no
} catch (error) {
  if (error instanceof CoSignUnavailableError) retryLater(); // wire was down
}

Extends

  • Error

Constructors

Constructor

new CoSignUnavailableError(message, options?): CoSignUnavailableError

Defined in: src/signer/errors.ts:76

Parameters

message

string

options?
cause?

unknown

transient?

boolean

Returns

CoSignUnavailableError

Overrides

Error.constructor

Properties

cause?

optional cause?: unknown

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

Inherited from

Error.cause

message

message: string

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

Inherited from

Error.message

name

name: string

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

Inherited from

Error.stack

transient

readonly transient: boolean

Defined in: src/signer/errors.ts:74

true when the failure is the transient transport class (connect failed / connection dropped) — the only class the adapter’s bounded retry replays (RFC m6-3a §4.7: never a delivered rejection, never a ban/identifiable-abort, never a protocol anomaly or timeout). Defaults to false.

stackTraceLimit

static stackTraceLimit: number

Defined in: node_modules/.pnpm/@types+node@22.19.19/node_modules/@types/node/globals.d.ts:68

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/.pnpm/@types+node@22.19.19/node_modules/@types/node/globals.d.ts:52

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/.pnpm/@types+node@22.19.19/node_modules/@types/node/globals.d.ts:56

Parameters

err

Error

stackTraces

CallSite[]

Returns

any

See

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

Inherited from

Error.prepareStackTrace