Function commitBeforeMutationEffects

docs/index.js:11218–11374

(root, firstChild)

  nextEffect = null,
  shouldFireAfterActiveInstanceBlur = !1;
function commitBeforeMutationEffects(root, firstChild) {
  root = root.containerInfo;
  eventsEnabled = _enabled;
  root = getActiveElementDeep(root);
  if (hasSelectionCapabilities(root)) {
    if ("selectionStart" in root)
      var JSCompiler_temp = {
        start: root.selectionStart,
        end: root.selectionEnd
      };
    else
      a: {
        JSCompiler_temp =
          ((JSCompiler_temp = root.ownerDocument) &&
            JSCompiler_temp.defaultView) ||
          window;
        var selection =
          JSCompiler_temp.getSelection && JSCompiler_temp.getSelection();
        if (selection && 0 !== selection.rangeCount) {
          JSCompiler_temp = selection.anchorNode;
          var anchorOffset = selection.anchorOffset,
            focusNode = selection.focusNode;
          selection = selection.focusOffset;
          try {
            JSCompiler_temp.nodeType, focusNode.nodeType;
          } catch (e$20) {
            JSCompiler_temp = null;
            break a;
          }
          var length = 0,
            start = -1,
            end = -1,
            indexWithinAnchor = 0,
            indexWithinFocus = 0,
            node = root,
            parentNode = null;
          b: for (;;) {
            for (var next; ; ) {
              node !== JSCompiler_temp ||
                (0 !== anchorOffset && 3 !== node.nodeType) ||
                (start = length + anchorOffset);
              node !== focusNode ||
                (0 !== selection && 3 !== node.nodeType) ||
                (end = length + selection);
              3 === node.nodeType && (length += node.nodeValue.length);
              if (null === (next = node.firstChild)) break;
              parentNode = node;
              node = next;
            }
            for (;;) {
              if (node === root) break b;
              parentNode === JSCompiler_temp &&
                ++indexWithinAnchor === anchorOffset &&
                (start = length);
              parentNode === focusNode &&
                ++indexWithinFocus === selection &&
                (end = length);
              if (null !== (next = node.nextSibling)) break;