Function findCurrentFiberUsingSlowPath

docs/index.js:3848–3915

(fiber)

    throw Error(formatProdErrorMessage(188));
}
function findCurrentFiberUsingSlowPath(fiber) {
  var alternate = fiber.alternate;
  if (!alternate) {
    alternate = getNearestMountedFiber(fiber);
    if (null === alternate) throw Error(formatProdErrorMessage(188));
    return alternate !== fiber ? null : fiber;
  }
  for (var a = fiber, b = alternate; ; ) {
    var parentA = a.return;
    if (null === parentA) break;
    var parentB = parentA.alternate;
    if (null === parentB) {
      b = parentA.return;
      if (null !== b) {
        a = b;
        continue;
      }
      break;
    }
    if (parentA.child === parentB.child) {
      for (parentB = parentA.child; parentB; ) {
        if (parentB === a) return assertIsMounted(parentA), fiber;
        if (parentB === b) return assertIsMounted(parentA), alternate;
        parentB = parentB.sibling;
      }
      throw Error(formatProdErrorMessage(188));
    }
    if (a.return !== b.return) (a = parentA), (b = parentB);
    else {
      for (var didFindChild = !1, child$2 = parentA.child; child$2; ) {
        if (child$2 === a) {
          didFindChild = !0;
          a = parentA;
          b = parentB;
          break;
        }
        if (child$2 === b) {
          didFindChild = !0;
          b = parentA;
          a = parentB;
          break;
        }
        child$2 = child$2.sibling;
      }
      if (!didFindChild) {
        for (child$2 = parentB.child; child$2; ) {
          if (child$2 === a) {
            didFindChild = !0;
            a = parentB;
            b = parentA;
            break;
          }
          if (child$2 === b) {
            didFindChild = !0;
            b = parentB;
            a = parentA;
            break;
          }