ref.js 1.72 KB
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.fillRef = fillRef;
exports.composeRef = composeRef;
exports.supportRef = supportRef;

var _reactIs = require("react-is");

function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function fillRef(ref, node) {
  if (typeof ref === 'function') {
    ref(node);
  } else if (_typeof(ref) === 'object' && ref && 'current' in ref) {
    ref.current = node;
  }
}
/**
 * Merge refs into one ref function to support ref passing.
 */


function composeRef() {
  for (var _len = arguments.length, refs = new Array(_len), _key = 0; _key < _len; _key++) {
    refs[_key] = arguments[_key];
  }

  return function (node) {
    refs.forEach(function (ref) {
      fillRef(ref, node);
    });
  };
}

function supportRef(nodeOrComponent) {
  var _type$prototype, _nodeOrComponent$prot;

  var type = (0, _reactIs.isMemo)(nodeOrComponent) ? nodeOrComponent.type.type : nodeOrComponent.type; // Function component node

  if (typeof type === 'function' && !((_type$prototype = type.prototype) === null || _type$prototype === void 0 ? void 0 : _type$prototype.render)) {
    return false;
  } // Class component


  if (typeof nodeOrComponent === 'function' && !((_nodeOrComponent$prot = nodeOrComponent.prototype) === null || _nodeOrComponent$prot === void 0 ? void 0 : _nodeOrComponent$prot.render)) {
    return false;
  }

  return true;
}
/* eslint-enable */