description

# offset property Null safety

int? offset
final

The offset in source where the error was detected.

A zero-based offset into the source that marks the format error causing this exception to be created. If `source` is a string, this should be a string index in the range `0 <= offset <= source.length`.

If input is a string, the toString method may represent this offset as a line and character position. The offset should be inside the string, or at the end of the string.

May be omitted. If present, source should also be present if possible.

## Implementation

    final int? offset