OptionalcauseOptionalstackStaticstackThe 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.
StaticcaptureCreates 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: FunctionStaticprepare
Raised when saving a persisted instance whose database row no longer exists — the row was deleted between the moment the instance was loaded and the moment the save reached the database.
This is the write-side counterpart of
RecordNotFound, and applications catch it for the same reasons: a request updating a record another request has since deleted should answer 404 or 409 rather than 500, and a background job holding a stale instance should usually drop the work rather than fail loudly. Nothing is written when it is raised.It does not mean the save was rejected — a save that fails validation raises
ValidationError, and a constraint violation raises its own error. It means the row that the instance stands for is gone.Dream raises it from the query driver, so a custom driver overriding
saveDreamtranslates its own adapter's empty-result error the same way, as the test-app MySQL driver does.