if (op.text.length > 0) {
const lineCount = op.eolCount + 1;
if (lineCount === 1) {
// single line insert
resultRange = new Range(startLineNumber, startColumn, startLineNumber, startColumn + op.firstLineLength);
// multi line insert
resultRange = new Range(startLineNumber, startColumn, startLineNumber + lineCount - 1, op.lastLineLength + 1);