@uppy/react/lib/useUppy.js

var _require = require('react'),
    useEffect = _require.useEffect,
    useRef = _require.useRef;

var UppyCore = require('@uppy/core').Uppy;

module.exports = function useUppy(factory) {
  if (typeof factory !== 'function') {
    throw new TypeError('useUppy: expected a function that returns a new Uppy instance');
  }

  var uppy = useRef(undefined);

  if (uppy.current === undefined) {
    uppy.current = factory();

    if (!(uppy.current instanceof UppyCore)) {
      throw new TypeError("useUppy: factory function must return an Uppy instance, got " + typeof uppy.current);
    }
  }

  useEffect(function () {
    return function () {
      uppy.current.close();
    };
  }, []);
  return uppy.current;
};