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Class: PromptEngineError

Defined in: packages/agentos/src/core/llm/IPromptEngine.ts:663

Custom error class for all errors originating from the PromptEngine. This allows for specific catching and handling of prompt construction failures.

Extends​

  • Error

Constructors​

Constructor​

new PromptEngineError(message, code, component?, details?): PromptEngineError

Defined in: packages/agentos/src/core/llm/IPromptEngine.ts:697

Creates an instance of PromptEngineError.

Parameters​

message​

string

A human-readable description of the error.

code​

string

A specific error code (e.g., 'TEMPLATE_NOT_FOUND').

component?​

string

The engine component where the error originated.

details?​

unknown

Additional context or the underlying error.

Returns​

PromptEngineError

Overrides​

Error.constructor

Properties​

code​

readonly code: string

Defined in: packages/agentos/src/core/llm/IPromptEngine.ts:670

A specific error code for programmatic handling (e.g., 'TEMPLATE_NOT_FOUND', 'TOKEN_LIMIT_EXCEEDED_IRRECOVERABLY').

component?​

readonly optional component: string

Defined in: packages/agentos/src/core/llm/IPromptEngine.ts:679

Optional: The specific component or operation within the PromptEngine where the error occurred (e.g., 'TokenBudgeting', 'TemplateFormatting', 'ContextualElementSelection').

details?​

readonly optional details: unknown

Defined in: packages/agentos/src/core/llm/IPromptEngine.ts:688

Optional: Additional structured details about the error, which might include relevant data like modelId, offending component, or configuration issue.

message​

message: string

Defined in: apps/agentos-live-docs/node_modules/typescript/lib/lib.es5.d.ts:1077

Inherited from​

Error.message

name​

name: string

Defined in: apps/agentos-live-docs/node_modules/typescript/lib/lib.es5.d.ts:1076

Inherited from​

Error.name

stack?​

optional stack: string

Defined in: apps/agentos-live-docs/node_modules/typescript/lib/lib.es5.d.ts:1078

Inherited from​

Error.stack

stackTraceLimit​

static stackTraceLimit: number

Defined in: packages/agentos/node_modules/.pnpm/@types+node@22.20.5/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: packages/agentos/node_modules/.pnpm/@types+node@22.20.5/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: packages/agentos/node_modules/.pnpm/@types+node@22.20.5/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