如何统计在monaco编辑器中更改的行数？

var editor = monaco.editor.create(document.getElementById("container"), {
  value: "",
  language: "plaintext"
});

var previousContent = editor.getValue();
var previousLineCount = editor.getModel().getLineCount();

editor.onDidChangeModelContent(function(event) {
  var currentContent = editor.getValue();
  var currentLineCount = editor.getModel().getLineCount();

  var lineDiff = currentLineCount - previousLineCount;
  var diffLines = [];

  if (lineDiff > 0) {
    // New lines added
    for (var i = previousLineCount + 1; i <= currentLineCount; i++) {
      diffLines.push(i);
    }
  } else if (lineDiff < 0) {
    // Lines deleted
    for (var i = previousLineCount; i > currentLineCount; i--) {
      diffLines.push(i);
    }
  }

  previousContent = currentContent;
  previousLineCount = currentLineCount;

  // Update UI with diffLines
  document.getElementById("diffLines").textContent = diffLines.join(", ");
});