Internal
Static
Internal
stackThe 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.
Readonly
Internal
argsAdditional arguments for this instance, if any.
Readonly
Internal
codeReadonly
Internal
contextContext information for an error.
Internal
messageReadonly
Internal
nameRepresents the name for the type of error.
Optional
Readonly
Internal
causeRepresents the cause of the error (e.g., a different exception that was caught).
Optional
Internal
stackProtected
Optional
Readonly
Internal
ARGS_Default args object, if applicable.
Static
captureInternal
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();
Optional
constructorOpt: FunctionStatic
prepareInternal
Overrides the default function to return a string representation of this object.
Internal
Overrides the default function to return an object representation of this object.
An extension of the utilities error used by the SemVer class.
Since
0.1.0-alpha