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
Rebuild a PostgreSQL layered outer view so
g.*re-expands against the current inner view.PostgreSQL expands
SELECT */g.*at CREATE VIEW time and freezes the column list.CREATE OR REPLACEof the inner view does not touch dependents, so a wrapper written asSELECT g.*, extras FROM inner gsilently stops picking up new inner columns.pg_get_viewdefreturns that expanded list, not the originalg.*.This rewrites the deparsed outer definition back to
SELECT <alias>.*, extrasso CREATE VIEW re-expands against the live inner relation. Extra SELECT items (computed columns, joins) are preserved. Inner columns newly added in the middle ofg.*are not in the old deparsed list; puttingg.*back is what makes them appear.The extras-are-trailing contract is the layered-view one:
g.*then application columns. We consume leading SELECT items that are simple references to inner-view columns, and treat the rest as extras.