Optionalcause
Optionalstack
StaticstackStaticcapture
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();
OptionalconstructorOpt:
Function
StaticisIndicates whether the argument provided is a built-in Error instance or not.
Staticprepare
The
Error.stackTraceLimitproperty specifies the number of stack frames collected by a stack trace (whether generated bynew Error().stackorError.captureStackTrace(obj)).The default value is
10but 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.