Class

ParserSyntaxError

src/core/errors.ts:25

Parser syntax error kept separate from lower-level tokenization failures.

Members

captureStackTrace(targetObject: object, constructorOpt?: Function): voidMethod

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

NameTypeDescription
targetObjectobject—
constructorOptFunction—

Returns

void

cause: unknownProperty

No description is available yet.

message: stringProperty

No description is available yet.

name: stringProperty

No description is available yet.

prepareStackTrace(err: Error, stackTraces: CallSite[]): anyMethod
see

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

Parameters

NameTypeDescription
errError—
stackTracesCallSite[]—

Returns

any

stack: stringProperty

No description is available yet.

stackTraceLimit: numberProperty

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.