Function getComponentKey

docs/external/js/react.development.js:1189–1199

* Generate a key string that identifies a component within a set. * * @param {*} component A component that could contain a manual key. * @param {number} index Index that is used if a manual key is not provided. * @return {string}

(component, index)

  function getComponentKey(component, index) {
    // Do some typechecking here since we call this blindly. We want to ensure
    // that we don't block potential future ES APIs.
    if (typeof component === 'object' && component !== null && component.key != null) {
      // Explicit key
      return escape(component.key);
    } // Implicit key determined by the index in the set


    return index.toString(36);
  }

  function forEachSingleChild(bookKeeping, child, name) {
    var func = bookKeeping.func,