One reason CSS is not valid, placed in the text that was checked.
line and column are 1-based, the column counted in characters. offset is
the byte offset of text, the part of the source the error is about; text
is empty when the error is about the end of the source.
Summary
Types
@type t() :: %IgniterCss.Diagnostic{ column: pos_integer(), line: pos_integer(), message: String.t(), offset: non_neg_integer(), text: String.t() }