Method _addError

server/src/parser/parser.ts:2390–2394

(message: string, range: TextRange)

    }

    private _addError(message: string, range: TextRange) {
        assert(range !== undefined);
        this._diagSink.addError(message,
            convertOffsetsToRange(range.start, range.end, this._tokenizerOutput!.lines));
    }
}