new DeveloperError(message)

Constructs an exception object that is thrown due to a developer error, e.g., invalid argument, argument out of range, etc. This exception should only be thrown during development; it usually indicates a bug in the calling code. This exception should never be caught; instead the calling code should strive not to generate it.

On the other hand, a RuntimeError indicates an exception that may be thrown at runtime, e.g., out of memory, that the calling code should be prepared to catch.
Name Type Description
message String optional The error message for this exception.


readonlymessage :String

The explanation for why this exception was thrown.

readonlyname :String

'DeveloperError' indicating that this exception was thrown due to a developer error.

readonlystack :String

The stack trace of this exception, if available.