function onlyChildren()

in packages/transform/src/meta.js [22:51]

• 4 lines of code
• 3 McCabe index (conditional complexity)

  function onlyChildren(node) {
    const t = getTypes();
    t.assertNode(node);

    // Assume no side effects until we find out otherwise.
    let result = false;

    function check(child) {
      if (result) {
        // Do nothing.
      } else if (Array.isArray(child)) {
        child.some(check);
      } else if (t.isNode(child)) {
        assert.strictEqual(result, false);
        result = predicate(child);
      }
      return result;
    }

    let keys = t.VISITOR_KEYS[node.type];
    if (keys) {
      for (let i = 0; i < keys.length; i++) {
        let key = keys[i];
        let child = node[key];
        check(child);
      }
    }

    return result;
  }