react-draggable.js

(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('react-dom'), require('react')) :
	typeof define === 'function' && define.amd ? define(['react-dom', 'react'], factory) :
	(global.ReactDraggable = factory(global.ReactDOM,global.React));
}(this, (function (ReactDOM,React) { 'use strict';

	ReactDOM = ReactDOM && ReactDOM.hasOwnProperty('default') ? ReactDOM['default'] : ReactDOM;
	React = React && React.hasOwnProperty('default') ? React['default'] : React;

	function createCommonjsModule(fn, module) {
		return module = { exports: {} }, fn(module, module.exports), module.exports;
	}

	/*
	object-assign
	(c) Sindre Sorhus
	@license MIT
	*/
	/* eslint-disable no-unused-vars */
	var getOwnPropertySymbols = Object.getOwnPropertySymbols;
	var hasOwnProperty = Object.prototype.hasOwnProperty;
	var propIsEnumerable = Object.prototype.propertyIsEnumerable;

	function toObject(val) {
		if (val === null || val === undefined) {
			throw new TypeError('Object.assign cannot be called with null or undefined');
		}

		return Object(val);
	}

	function shouldUseNative() {
		try {
			if (!Object.assign) {
				return false;
			}

			// Detect buggy property enumeration order in older V8 versions.

			// https://bugs.chromium.org/p/v8/issues/detail?id=4118
			var test1 = new String('abc');  // eslint-disable-line no-new-wrappers
			test1[5] = 'de';
			if (Object.getOwnPropertyNames(test1)[0] === '5') {
				return false;
			}

			// https://bugs.chromium.org/p/v8/issues/detail?id=3056
			var test2 = {};
			for (var i = 0; i < 10; i++) {
				test2['_' + String.fromCharCode(i)] = i;
			}
			var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
				return test2[n];
			});
			if (order2.join('') !== '0123456789') {
				return false;
			}

			// https://bugs.chromium.org/p/v8/issues/detail?id=3056
			var test3 = {};
			'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
				test3[letter] = letter;
			});
			if (Object.keys(Object.assign({}, test3)).join('') !==
					'abcdefghijklmnopqrst') {
				return false;
			}

			return true;
		} catch (err) {
			// We don't expect any of the above to throw, but better to be safe.
			return false;
		}
	}

	var objectAssign = shouldUseNative() ? Object.assign : function (target, source) {
		var from;
		var to = toObject(target);
		var symbols;

		for (var s = 1; s < arguments.length; s++) {
			from = Object(arguments[s]);

			for (var key in from) {
				if (hasOwnProperty.call(from, key)) {
					to[key] = from[key];
				}
			}

			if (getOwnPropertySymbols) {
				symbols = getOwnPropertySymbols(from);
				for (var i = 0; i < symbols.length; i++) {
					if (propIsEnumerable.call(from, symbols[i])) {
						to[symbols[i]] = from[symbols[i]];
					}
				}
			}
		}

		return to;
	};

	/**
	 * Copyright (c) 2013-present, Facebook, Inc.
	 *
	 * This source code is licensed under the MIT license found in the
	 * LICENSE file in the root directory of this source tree.
	 */

	var ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';

	var ReactPropTypesSecret_1 = ReactPropTypesSecret;

	var printWarning = function() {};

	{
	  var ReactPropTypesSecret$1 = ReactPropTypesSecret_1;
	  var loggedTypeFailures = {};

	  printWarning = function(text) {
	    var message = 'Warning: ' + text;
	    if (typeof console !== 'undefined') {
	      console.error(message);
	    }
	    try {
	      // --- Welcome to debugging React ---
	      // This error was thrown as a convenience so that you can use this stack
	      // to find the callsite that caused this warning to fire.
	      throw new Error(message);
	    } catch (x) {}
	  };
	}

	/**
	 * Assert that the values match with the type specs.
	 * Error messages are memorized and will only be shown once.
	 *
	 * @param {object} typeSpecs Map of name to a ReactPropType
	 * @param {object} values Runtime values that need to be type-checked
	 * @param {string} location e.g. "prop", "context", "child context"
	 * @param {string} componentName Name of the component for error messages.
	 * @param {?Function} getStack Returns the component stack.
	 * @private
	 */
	function checkPropTypes(typeSpecs, values, location, componentName, getStack) {
	  {
	    for (var typeSpecName in typeSpecs) {
	      if (typeSpecs.hasOwnProperty(typeSpecName)) {
	        var error;
	        // Prop type validation may throw. In case they do, we don't want to
	        // fail the render phase where it didn't fail before. So we log it.
	        // After these have been cleaned up, we'll let them throw.
	        try {
	          // This is intentionally an invariant that gets caught. It's the same
	          // behavior as without this statement except with a better message.
	          if (typeof typeSpecs[typeSpecName] !== 'function') {
	            var err = Error(
	              (componentName || 'React class') + ': ' + location + ' type `' + typeSpecName + '` is invalid; ' +
	              'it must be a function, usually from the `prop-types` package, but received `' + typeof typeSpecs[typeSpecName] + '`.'
	            );
	            err.name = 'Invariant Violation';
	            throw err;
	          }
	          error = typeSpecs[typeSpecName](values, typeSpecName, componentName, location, null, ReactPropTypesSecret$1);
	        } catch (ex) {
	          error = ex;
	        }
	        if (error && !(error instanceof Error)) {
	          printWarning(
	            (componentName || 'React class') + ': type specification of ' +
	            location + ' `' + typeSpecName + '` is invalid; the type checker ' +
	            'function must return `null` or an `Error` but returned a ' + typeof error + '. ' +
	            'You may have forgotten to pass an argument to the type checker ' +
	            'creator (arrayOf, instanceOf, objectOf, oneOf, oneOfType, and ' +
	            'shape all require an argument).'
	          );

	        }
	        if (error instanceof Error && !(error.message in loggedTypeFailures)) {
	          // Only monitor this failure once because there tends to be a lot of the
	          // same error.
	          loggedTypeFailures[error.message] = true;

	          var stack = getStack ? getStack() : '';

	          printWarning(
	            'Failed ' + location + ' type: ' + error.message + (stack != null ? stack : '')
	          );
	        }
	      }
	    }
	  }
	}

	var checkPropTypes_1 = checkPropTypes;

	var printWarning$1 = function() {};

	{
	  printWarning$1 = function(text) {
	    var message = 'Warning: ' + text;
	    if (typeof console !== 'undefined') {
	      console.error(message);
	    }
	    try {
	      // --- Welcome to debugging React ---
	      // This error was thrown as a convenience so that you can use this stack
	      // to find the callsite that caused this warning to fire.
	      throw new Error(message);
	    } catch (x) {}
	  };
	}

	function emptyFunctionThatReturnsNull() {
	  return null;
	}

	var factoryWithTypeCheckers = function(isValidElement, throwOnDirectAccess) {
	  /* global Symbol */
	  var ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;
	  var FAUX_ITERATOR_SYMBOL = '@@iterator'; // Before Symbol spec.

	  /**
	   * Returns the iterator method function contained on the iterable object.
	   *
	   * Be sure to invoke the function with the iterable as context:
	   *
	   *     var iteratorFn = getIteratorFn(myIterable);
	   *     if (iteratorFn) {
	   *       var iterator = iteratorFn.call(myIterable);
	   *       ...
	   *     }
	   *
	   * @param {?object} maybeIterable
	   * @return {?function}
	   */
	  function getIteratorFn(maybeIterable) {
	    var iteratorFn = maybeIterable && (ITERATOR_SYMBOL && maybeIterable[ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL]);
	    if (typeof iteratorFn === 'function') {
	      return iteratorFn;
	    }
	  }

	  /**
	   * Collection of methods that allow declaration and validation of props that are
	   * supplied to React components. Example usage:
	   *
	   *   var Props = require('ReactPropTypes');
	   *   var MyArticle = React.createClass({
	   *     propTypes: {
	   *       // An optional string prop named "description".
	   *       description: Props.string,
	   *
	   *       // A required enum prop named "category".
	   *       category: Props.oneOf(['News','Photos']).isRequired,
	   *
	   *       // A prop named "dialog" that requires an instance of Dialog.
	   *       dialog: Props.instanceOf(Dialog).isRequired
	   *     },
	   *     render: function() { ... }
	   *   });
	   *
	   * A more formal specification of how these methods are used:
	   *
	   *   type := array|bool|func|object|number|string|oneOf([...])|instanceOf(...)
	   *   decl := ReactPropTypes.{type}(.isRequired)?
	   *
	   * Each and every declaration produces a function with the same signature. This
	   * allows the creation of custom validation functions. For example:
	   *
	   *  var MyLink = React.createClass({
	   *    propTypes: {
	   *      // An optional string or URI prop named "href".
	   *      href: function(props, propName, componentName) {
	   *        var propValue = props[propName];
	   *        if (propValue != null && typeof propValue !== 'string' &&
	   *            !(propValue instanceof URI)) {
	   *          return new Error(
	   *            'Expected a string or an URI for ' + propName + ' in ' +
	   *            componentName
	   *          );
	   *        }
	   *      }
	   *    },
	   *    render: function() {...}
	   *  });
	   *
	   * @internal
	   */

	  var ANONYMOUS = '<<anonymous>>';

	  // Important!
	  // Keep this list in sync with production version in `./factoryWithThrowingShims.js`.
	  var ReactPropTypes = {
	    array: createPrimitiveTypeChecker('array'),
	    bool: createPrimitiveTypeChecker('boolean'),
	    func: createPrimitiveTypeChecker('function'),
	    number: createPrimitiveTypeChecker('number'),
	    object: createPrimitiveTypeChecker('object'),
	    string: createPrimitiveTypeChecker('string'),
	    symbol: createPrimitiveTypeChecker('symbol'),

	    any: createAnyTypeChecker(),
	    arrayOf: createArrayOfTypeChecker,
	    element: createElementTypeChecker(),
	    instanceOf: createInstanceTypeChecker,
	    node: createNodeChecker(),
	    objectOf: createObjectOfTypeChecker,
	    oneOf: createEnumTypeChecker,
	    oneOfType: createUnionTypeChecker,
	    shape: createShapeTypeChecker,
	    exact: createStrictShapeTypeChecker,
	  };

	  /**
	   * inlined Object.is polyfill to avoid requiring consumers ship their own
	   * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
	   */
	  /*eslint-disable no-self-compare*/
	  function is(x, y) {
	    // SameValue algorithm
	    if (x === y) {
	      // Steps 1-5, 7-10
	      // Steps 6.b-6.e: +0 != -0
	      return x !== 0 || 1 / x === 1 / y;
	    } else {
	      // Step 6.a: NaN == NaN
	      return x !== x && y !== y;
	    }
	  }
	  /*eslint-enable no-self-compare*/

	  /**
	   * We use an Error-like object for backward compatibility as people may call
	   * PropTypes directly and inspect their output. However, we don't use real
	   * Errors anymore. We don't inspect their stack anyway, and creating them
	   * is prohibitively expensive if they are created too often, such as what
	   * happens in oneOfType() for any type before the one that matched.
	   */
	  function PropTypeError(message) {
	    this.message = message;
	    this.stack = '';
	  }
	  // Make `instanceof Error` still work for returned errors.
	  PropTypeError.prototype = Error.prototype;

	  function createChainableTypeChecker(validate) {
	    {
	      var manualPropTypeCallCache = {};
	      var manualPropTypeWarningCount = 0;
	    }
	    function checkType(isRequired, props, propName, componentName, location, propFullName, secret) {
	      componentName = componentName || ANONYMOUS;
	      propFullName = propFullName || propName;

	      if (secret !== ReactPropTypesSecret_1) {
	        if (throwOnDirectAccess) {
	          // New behavior only for users of `prop-types` package
	          var err = new Error(
	            'Calling PropTypes validators directly is not supported by the `prop-types` package. ' +
	            'Use `PropTypes.checkPropTypes()` to call them. ' +
	            'Read more at http://fb.me/use-check-prop-types'
	          );
	          err.name = 'Invariant Violation';
	          throw err;
	        } else if ("development" !== 'production' && typeof console !== 'undefined') {
	          // Old behavior for people using React.PropTypes
	          var cacheKey = componentName + ':' + propName;
	          if (
	            !manualPropTypeCallCache[cacheKey] &&
	            // Avoid spamming the console because they are often not actionable except for lib authors
	            manualPropTypeWarningCount < 3
	          ) {
	            printWarning$1(
	              'You are manually calling a React.PropTypes validation ' +
	              'function for the `' + propFullName + '` prop on `' + componentName  + '`. This is deprecated ' +
	              'and will throw in the standalone `prop-types` package. ' +
	              'You may be seeing this warning due to a third-party PropTypes ' +
	              'library. See https://fb.me/react-warning-dont-call-proptypes ' + 'for details.'
	            );
	            manualPropTypeCallCache[cacheKey] = true;
	            manualPropTypeWarningCount++;
	          }
	        }
	      }
	      if (props[propName] == null) {
	        if (isRequired) {
	          if (props[propName] === null) {
	            return new PropTypeError('The ' + location + ' `' + propFullName + '` is marked as required ' + ('in `' + componentName + '`, but its value is `null`.'));
	          }
	          return new PropTypeError('The ' + location + ' `' + propFullName + '` is marked as required in ' + ('`' + componentName + '`, but its value is `undefined`.'));
	        }
	        return null;
	      } else {
	        return validate(props, propName, componentName, location, propFullName);
	      }
	    }

	    var chainedCheckType = checkType.bind(null, false);
	    chainedCheckType.isRequired = checkType.bind(null, true);

	    return chainedCheckType;
	  }

	  function createPrimitiveTypeChecker(expectedType) {
	    function validate(props, propName, componentName, location, propFullName, secret) {
	      var propValue = props[propName];
	      var propType = getPropType(propValue);
	      if (propType !== expectedType) {
	        // `propValue` being instance of, say, date/regexp, pass the 'object'
	        // check, but we can offer a more precise error message here rather than
	        // 'of type `object`'.
	        var preciseType = getPreciseType(propValue);

	        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + preciseType + '` supplied to `' + componentName + '`, expected ') + ('`' + expectedType + '`.'));
	      }
	      return null;
	    }
	    return createChainableTypeChecker(validate);
	  }

	  function createAnyTypeChecker() {
	    return createChainableTypeChecker(emptyFunctionThatReturnsNull);
	  }

	  function createArrayOfTypeChecker(typeChecker) {
	    function validate(props, propName, componentName, location, propFullName) {
	      if (typeof typeChecker !== 'function') {
	        return new PropTypeError('Property `' + propFullName + '` of component `' + componentName + '` has invalid PropType notation inside arrayOf.');
	      }
	      var propValue = props[propName];
	      if (!Array.isArray(propValue)) {
	        var propType = getPropType(propValue);
	        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected an array.'));
	      }
	      for (var i = 0; i < propValue.length; i++) {
	        var error = typeChecker(propValue, i, componentName, location, propFullName + '[' + i + ']', ReactPropTypesSecret_1);
	        if (error instanceof Error) {
	          return error;
	        }
	      }
	      return null;
	    }
	    return createChainableTypeChecker(validate);
	  }

	  function createElementTypeChecker() {
	    function validate(props, propName, componentName, location, propFullName) {
	      var propValue = props[propName];
	      if (!isValidElement(propValue)) {
	        var propType = getPropType(propValue);
	        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected a single ReactElement.'));
	      }
	      return null;
	    }
	    return createChainableTypeChecker(validate);
	  }

	  function createInstanceTypeChecker(expectedClass) {
	    function validate(props, propName, componentName, location, propFullName) {
	      if (!(props[propName] instanceof expectedClass)) {
	        var expectedClassName = expectedClass.name || ANONYMOUS;
	        var actualClassName = getClassName(props[propName]);
	        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + actualClassName + '` supplied to `' + componentName + '`, expected ') + ('instance of `' + expectedClassName + '`.'));
	      }
	      return null;
	    }
	    return createChainableTypeChecker(validate);
	  }

	  function createEnumTypeChecker(expectedValues) {
	    if (!Array.isArray(expectedValues)) {
	      printWarning$1('Invalid argument supplied to oneOf, expected an instance of array.');
	      return emptyFunctionThatReturnsNull;
	    }

	    function validate(props, propName, componentName, location, propFullName) {
	      var propValue = props[propName];
	      for (var i = 0; i < expectedValues.length; i++) {
	        if (is(propValue, expectedValues[i])) {
	          return null;
	        }
	      }

	      var valuesString = JSON.stringify(expectedValues);
	      return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of value `' + propValue + '` ' + ('supplied to `' + componentName + '`, expected one of ' + valuesString + '.'));
	    }
	    return createChainableTypeChecker(validate);
	  }

	  function createObjectOfTypeChecker(typeChecker) {
	    function validate(props, propName, componentName, location, propFullName) {
	      if (typeof typeChecker !== 'function') {
	        return new PropTypeError('Property `' + propFullName + '` of component `' + componentName + '` has invalid PropType notation inside objectOf.');
	      }
	      var propValue = props[propName];
	      var propType = getPropType(propValue);
	      if (propType !== 'object') {
	        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected an object.'));
	      }
	      for (var key in propValue) {
	        if (propValue.hasOwnProperty(key)) {
	          var error = typeChecker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret_1);
	          if (error instanceof Error) {
	            return error;
	          }
	        }
	      }
	      return null;
	    }
	    return createChainableTypeChecker(validate);
	  }

	  function createUnionTypeChecker(arrayOfTypeCheckers) {
	    if (!Array.isArray(arrayOfTypeCheckers)) {
	      printWarning$1('Invalid argument supplied to oneOfType, expected an instance of array.');
	      return emptyFunctionThatReturnsNull;
	    }

	    for (var i = 0; i < arrayOfTypeCheckers.length; i++) {
	      var checker = arrayOfTypeCheckers[i];
	      if (typeof checker !== 'function') {
	        printWarning$1(
	          'Invalid argument supplied to oneOfType. Expected an array of check functions, but ' +
	          'received ' + getPostfixForTypeWarning(checker) + ' at index ' + i + '.'
	        );
	        return emptyFunctionThatReturnsNull;
	      }
	    }

	    function validate(props, propName, componentName, location, propFullName) {
	      for (var i = 0; i < arrayOfTypeCheckers.length; i++) {
	        var checker = arrayOfTypeCheckers[i];
	        if (checker(props, propName, componentName, location, propFullName, ReactPropTypesSecret_1) == null) {
	          return null;
	        }
	      }

	      return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` supplied to ' + ('`' + componentName + '`.'));
	    }
	    return createChainableTypeChecker(validate);
	  }

	  function createNodeChecker() {
	    function validate(props, propName, componentName, location, propFullName) {
	      if (!isNode(props[propName])) {
	        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` supplied to ' + ('`' + componentName + '`, expected a ReactNode.'));
	      }
	      return null;
	    }
	    return createChainableTypeChecker(validate);
	  }

	  function createShapeTypeChecker(shapeTypes) {
	    function validate(props, propName, componentName, location, propFullName) {
	      var propValue = props[propName];
	      var propType = getPropType(propValue);
	      if (propType !== 'object') {
	        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type `' + propType + '` ' + ('supplied to `' + componentName + '`, expected `object`.'));
	      }
	      for (var key in shapeTypes) {
	        var checker = shapeTypes[key];
	        if (!checker) {
	          continue;
	        }
	        var error = checker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret_1);
	        if (error) {
	          return error;
	        }
	      }
	      return null;
	    }
	    return createChainableTypeChecker(validate);
	  }

	  function createStrictShapeTypeChecker(shapeTypes) {
	    function validate(props, propName, componentName, location, propFullName) {
	      var propValue = props[propName];
	      var propType = getPropType(propValue);
	      if (propType !== 'object') {
	        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type `' + propType + '` ' + ('supplied to `' + componentName + '`, expected `object`.'));
	      }
	      // We need to check all keys in case some are required but missing from
	      // props.
	      var allKeys = objectAssign({}, props[propName], shapeTypes);
	      for (var key in allKeys) {
	        var checker = shapeTypes[key];
	        if (!checker) {
	          return new PropTypeError(
	            'Invalid ' + location + ' `' + propFullName + '` key `' + key + '` supplied to `' + componentName + '`.' +
	            '\nBad object: ' + JSON.stringify(props[propName], null, '  ') +
	            '\nValid keys: ' +  JSON.stringify(Object.keys(shapeTypes), null, '  ')
	          );
	        }
	        var error = checker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret_1);
	        if (error) {
	          return error;
	        }
	      }
	      return null;
	    }

	    return createChainableTypeChecker(validate);
	  }

	  function isNode(propValue) {
	    switch (typeof propValue) {
	      case 'number':
	      case 'string':
	      case 'undefined':
	        return true;
	      case 'boolean':
	        return !propValue;
	      case 'object':
	        if (Array.isArray(propValue)) {
	          return propValue.every(isNode);
	        }
	        if (propValue === null || isValidElement(propValue)) {
	          return true;
	        }

	        var iteratorFn = getIteratorFn(propValue);
	        if (iteratorFn) {
	          var iterator = iteratorFn.call(propValue);
	          var step;
	          if (iteratorFn !== propValue.entries) {
	            while (!(step = iterator.next()).done) {
	              if (!isNode(step.value)) {
	                return false;
	              }
	            }
	          } else {
	            // Iterator will provide entry [k,v] tuples rather than values.
	            while (!(step = iterator.next()).done) {
	              var entry = step.value;
	              if (entry) {
	                if (!isNode(entry[1])) {
	                  return false;
	                }
	              }
	            }
	          }
	        } else {
	          return false;
	        }

	        return true;
	      default:
	        return false;
	    }
	  }

	  function isSymbol(propType, propValue) {
	    // Native Symbol.
	    if (propType === 'symbol') {
	      return true;
	    }

	    // 19.4.3.5 Symbol.prototype[@@toStringTag] === 'Symbol'
	    if (propValue['@@toStringTag'] === 'Symbol') {
	      return true;
	    }

	    // Fallback for non-spec compliant Symbols which are polyfilled.
	    if (typeof Symbol === 'function' && propValue instanceof Symbol) {
	      return true;
	    }

	    return false;
	  }

	  // Equivalent of `typeof` but with special handling for array and regexp.
	  function getPropType(propValue) {
	    var propType = typeof propValue;
	    if (Array.isArray(propValue)) {
	      return 'array';
	    }
	    if (propValue instanceof RegExp) {
	      // Old webkits (at least until Android 4.0) return 'function' rather than
	      // 'object' for typeof a RegExp. We'll normalize this here so that /bla/
	      // passes PropTypes.object.
	      return 'object';
	    }
	    if (isSymbol(propType, propValue)) {
	      return 'symbol';
	    }
	    return propType;
	  }

	  // This handles more types than `getPropType`. Only used for error messages.
	  // See `createPrimitiveTypeChecker`.
	  function getPreciseType(propValue) {
	    if (typeof propValue === 'undefined' || propValue === null) {
	      return '' + propValue;
	    }
	    var propType = getPropType(propValue);
	    if (propType === 'object') {
	      if (propValue instanceof Date) {
	        return 'date';
	      } else if (propValue instanceof RegExp) {
	        return 'regexp';
	      }
	    }
	    return propType;
	  }

	  // Returns a string that is postfixed to a warning about an invalid type.
	  // For example, "undefined" or "of type array"
	  function getPostfixForTypeWarning(value) {
	    var type = getPreciseType(value);
	    switch (type) {
	      case 'array':
	      case 'object':
	        return 'an ' + type;
	      case 'boolean':
	      case 'date':
	      case 'regexp':
	        return 'a ' + type;
	      default:
	        return type;
	    }
	  }

	  // Returns class name of the object, if any.
	  function getClassName(propValue) {
	    if (!propValue.constructor || !propValue.constructor.name) {
	      return ANONYMOUS;
	    }
	    return propValue.constructor.name;
	  }

	  ReactPropTypes.checkPropTypes = checkPropTypes_1;
	  ReactPropTypes.PropTypes = ReactPropTypes;

	  return ReactPropTypes;
	};

	var propTypes = createCommonjsModule(function (module) {
	/**
	 * Copyright (c) 2013-present, Facebook, Inc.
	 *
	 * This source code is licensed under the MIT license found in the
	 * LICENSE file in the root directory of this source tree.
	 */

	{
	  var REACT_ELEMENT_TYPE = (typeof Symbol === 'function' &&
	    Symbol.for &&
	    Symbol.for('react.element')) ||
	    0xeac7;

	  var isValidElement = function(object) {
	    return typeof object === 'object' &&
	      object !== null &&
	      object.$$typeof === REACT_ELEMENT_TYPE;
	  };

	  // By explicitly using `prop-types` you are opting into new development behavior.
	  // http://fb.me/prop-types-in-prod
	  var throwOnDirectAccess = true;
	  module.exports = factoryWithTypeCheckers(isValidElement, throwOnDirectAccess);
	}
	});

	var classnames = createCommonjsModule(function (module) {
	/*!
	  Copyright (c) 2017 Jed Watson.
	  Licensed under the MIT License (MIT), see
	  http://jedwatson.github.io/classnames
	*/
	/* global define */

	(function () {

		var hasOwn = {}.hasOwnProperty;

		function classNames () {
			var classes = [];

			for (var i = 0; i < arguments.length; i++) {
				var arg = arguments[i];
				if (!arg) continue;

				var argType = typeof arg;

				if (argType === 'string' || argType === 'number') {
					classes.push(arg);
				} else if (Array.isArray(arg) && arg.length) {
					var inner = classNames.apply(null, arg);
					if (inner) {
						classes.push(inner);
					}
				} else if (argType === 'object') {
					for (var key in arg) {
						if (hasOwn.call(arg, key) && arg[key]) {
							classes.push(key);
						}
					}
				}
			}

			return classes.join(' ');
		}

		if ('object' !== 'undefined' && module.exports) {
			classNames.default = classNames;
			module.exports = classNames;
		} else if (typeof undefined === 'function' && typeof undefined.amd === 'object' && undefined.amd) {
			// register as 'classnames', consistent with npm package name
			undefined('classnames', [], function () {
				return classNames;
			});
		} else {
			window.classNames = classNames;
		}
	}());
	});

	// @credits https://gist.github.com/rogozhnikoff/a43cfed27c41e4e68cdc
	function findInArray(array /*: Array<any> | TouchList*/, callback /*: Function*/) /*: any*/ {
	  for (var i = 0, length = array.length; i < length; i++) {
	    if (callback.apply(callback, [array[i], i, array])) return array[i];
	  }
	}

	function isFunction(func /*: any*/) /*: boolean*/ {
	  return typeof func === 'function' || Object.prototype.toString.call(func) === '[object Function]';
	}

	function isNum(num /*: any*/) /*: boolean*/ {
	  return typeof num === 'number' && !isNaN(num);
	}

	function int(a /*: string*/) /*: number*/ {
	  return parseInt(a, 10);
	}

	function dontSetMe(props /*: Object*/, propName /*: string*/, componentName /*: string*/) {
	  if (props[propName]) {
	    return new Error('Invalid prop ' + propName + ' passed to ' + componentName + ' - do not set this, set it on the child.');
	  }
	}

	var prefixes = ['Moz', 'Webkit', 'O', 'ms'];
	function getPrefix() /*: string*/ {
	  var prop /*: string*/ = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'transform';

	  // Checking specifically for 'window.document' is for pseudo-browser server-side
	  // environments that define 'window' as the global context.
	  // E.g. React-rails (see https://github.com/reactjs/react-rails/pull/84)
	  if (typeof window === 'undefined' || typeof window.document === 'undefined') return '';

	  var style = window.document.documentElement.style;

	  if (prop in style) return '';

	  for (var i = 0; i < prefixes.length; i++) {
	    if (browserPrefixToKey(prop, prefixes[i]) in style) return prefixes[i];
	  }

	  return '';
	}

	function browserPrefixToKey(prop /*: string*/, prefix /*: string*/) /*: string*/ {
	  return prefix ? '' + prefix + kebabToTitleCase(prop) : prop;
	}

	function kebabToTitleCase(str /*: string*/) /*: string*/ {
	  var out = '';
	  var shouldCapitalize = true;
	  for (var i = 0; i < str.length; i++) {
	    if (shouldCapitalize) {
	      out += str[i].toUpperCase();
	      shouldCapitalize = false;
	    } else if (str[i] === '-') {
	      shouldCapitalize = true;
	    } else {
	      out += str[i];
	    }
	  }
	  return out;
	}

	// Default export is the prefix itself, like 'Moz', 'Webkit', etc
	// Note that you may have to re-test for certain things; for instance, Chrome 50
	// can handle unprefixed `transform`, but not unprefixed `user-select`
	var browserPrefix = getPrefix();

	var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
	  return typeof obj;
	} : function (obj) {
	  return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
	};

	var classCallCheck = function (instance, Constructor) {
	  if (!(instance instanceof Constructor)) {
	    throw new TypeError("Cannot call a class as a function");
	  }
	};

	var createClass = function () {
	  function defineProperties(target, props) {
	    for (var i = 0; i < props.length; i++) {
	      var descriptor = props[i];
	      descriptor.enumerable = descriptor.enumerable || false;
	      descriptor.configurable = true;
	      if ("value" in descriptor) descriptor.writable = true;
	      Object.defineProperty(target, descriptor.key, descriptor);
	    }
	  }

	  return function (Constructor, protoProps, staticProps) {
	    if (protoProps) defineProperties(Constructor.prototype, protoProps);
	    if (staticProps) defineProperties(Constructor, staticProps);
	    return Constructor;
	  };
	}();

	var defineProperty = function (obj, key, value) {
	  if (key in obj) {
	    Object.defineProperty(obj, key, {
	      value: value,
	      enumerable: true,
	      configurable: true,
	      writable: true
	    });
	  } else {
	    obj[key] = value;
	  }

	  return obj;
	};

	var _extends = Object.assign || function (target) {
	  for (var i = 1; i < arguments.length; i++) {
	    var source = arguments[i];

	    for (var key in source) {
	      if (Object.prototype.hasOwnProperty.call(source, key)) {
	        target[key] = source[key];
	      }
	    }
	  }

	  return target;
	};

	var inherits = function (subClass, superClass) {
	  if (typeof superClass !== "function" && superClass !== null) {
	    throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
	  }

	  subClass.prototype = Object.create(superClass && superClass.prototype, {
	    constructor: {
	      value: subClass,
	      enumerable: false,
	      writable: true,
	      configurable: true
	    }
	  });
	  if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
	};

	var possibleConstructorReturn = function (self, call) {
	  if (!self) {
	    throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
	  }

	  return call && (typeof call === "object" || typeof call === "function") ? call : self;
	};

	var slicedToArray = function () {
	  function sliceIterator(arr, i) {
	    var _arr = [];
	    var _n = true;
	    var _d = false;
	    var _e = undefined;

	    try {
	      for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
	        _arr.push(_s.value);

	        if (i && _arr.length === i) break;
	      }
	    } catch (err) {
	      _d = true;
	      _e = err;
	    } finally {
	      try {
	        if (!_n && _i["return"]) _i["return"]();
	      } finally {
	        if (_d) throw _e;
	      }
	    }

	    return _arr;
	  }

	  return function (arr, i) {
	    if (Array.isArray(arr)) {
	      return arr;
	    } else if (Symbol.iterator in Object(arr)) {
	      return sliceIterator(arr, i);
	    } else {
	      throw new TypeError("Invalid attempt to destructure non-iterable instance");
	    }
	  };
	}();

	/*:: import type {ControlPosition, MouseTouchEvent} from './types';*/


	var matchesSelectorFunc = '';
	function matchesSelector(el /*: Node*/, selector /*: string*/) /*: boolean*/ {
	  if (!matchesSelectorFunc) {
	    matchesSelectorFunc = findInArray(['matches', 'webkitMatchesSelector', 'mozMatchesSelector', 'msMatchesSelector', 'oMatchesSelector'], function (method) {
	      // $FlowIgnore: Doesn't think elements are indexable
	      return isFunction(el[method]);
	    });
	  }

	  // Might not be found entirely (not an Element?) - in that case, bail
	  // $FlowIgnore: Doesn't think elements are indexable
	  if (!isFunction(el[matchesSelectorFunc])) return false;

	  // $FlowIgnore: Doesn't think elements are indexable
	  return el[matchesSelectorFunc](selector);
	}

	// Works up the tree to the draggable itself attempting to match selector.
	function matchesSelectorAndParentsTo(el /*: Node*/, selector /*: string*/, baseNode /*: Node*/) /*: boolean*/ {
	  var node = el;
	  do {
	    if (matchesSelector(node, selector)) return true;
	    if (node === baseNode) return false;
	    node = node.parentNode;
	  } while (node);

	  return false;
	}

	function addEvent(el /*: ?Node*/, event /*: string*/, handler /*: Function*/) /*: void*/ {
	  if (!el) {
	    return;
	  }
	  if (el.attachEvent) {
	    el.attachEvent('on' + event, handler);
	  } else if (el.addEventListener) {
	    el.addEventListener(event, handler, true);
	  } else {
	    // $FlowIgnore: Doesn't think elements are indexable
	    el['on' + event] = handler;
	  }
	}

	function removeEvent(el /*: ?Node*/, event /*: string*/, handler /*: Function*/) /*: void*/ {
	  if (!el) {
	    return;
	  }
	  if (el.detachEvent) {
	    el.detachEvent('on' + event, handler);
	  } else if (el.removeEventListener) {
	    el.removeEventListener(event, handler, true);
	  } else {
	    // $FlowIgnore: Doesn't think elements are indexable
	    el['on' + event] = null;
	  }
	}

	function outerHeight(node /*: HTMLElement*/) /*: number*/ {
	  // This is deliberately excluding margin for our calculations, since we are using
	  // offsetTop which is including margin. See getBoundPosition
	  var height = node.clientHeight;
	  var computedStyle = node.ownerDocument.defaultView.getComputedStyle(node);
	  height += int(computedStyle.borderTopWidth);
	  height += int(computedStyle.borderBottomWidth);
	  return height;
	}

	function outerWidth(node /*: HTMLElement*/) /*: number*/ {
	  // This is deliberately excluding margin for our calculations, since we are using
	  // offsetLeft which is including margin. See getBoundPosition
	  var width = node.clientWidth;
	  var computedStyle = node.ownerDocument.defaultView.getComputedStyle(node);
	  width += int(computedStyle.borderLeftWidth);
	  width += int(computedStyle.borderRightWidth);
	  return width;
	}
	function innerHeight(node /*: HTMLElement*/) /*: number*/ {
	  var height = node.clientHeight;
	  var computedStyle = node.ownerDocument.defaultView.getComputedStyle(node);
	  height -= int(computedStyle.paddingTop);
	  height -= int(computedStyle.paddingBottom);
	  return height;
	}

	function innerWidth(node /*: HTMLElement*/) /*: number*/ {
	  var width = node.clientWidth;
	  var computedStyle = node.ownerDocument.defaultView.getComputedStyle(node);
	  width -= int(computedStyle.paddingLeft);
	  width -= int(computedStyle.paddingRight);
	  return width;
	}

	// Get from offsetParent
	function offsetXYFromParent(evt /*: {clientX: number, clientY: number}*/, offsetParent /*: HTMLElement*/) /*: ControlPosition*/ {
	  var isBody = offsetParent === offsetParent.ownerDocument.body;
	  var offsetParentRect = isBody ? { left: 0, top: 0 } : offsetParent.getBoundingClientRect();

	  var x = evt.clientX + offsetParent.scrollLeft - offsetParentRect.left;
	  var y = evt.clientY + offsetParent.scrollTop - offsetParentRect.top;

	  return { x: x, y: y };
	}

	function createCSSTransform(_ref) /*: Object*/ {
	  var x = _ref.x,
	      y = _ref.y;

	  // Replace unitless items with px
	  return defineProperty({}, browserPrefixToKey('transform', browserPrefix), 'translate(' + x + 'px,' + y + 'px)');
	}

	function createSVGTransform(_ref3) /*: string*/ {
	  var x = _ref3.x,
	      y = _ref3.y;

	  return 'translate(' + x + ',' + y + ')';
	}

	function getTouch(e /*: MouseTouchEvent*/, identifier /*: number*/) /*: ?{clientX: number, clientY: number}*/ {
	  return e.targetTouches && findInArray(e.targetTouches, function (t) {
	    return identifier === t.identifier;
	  }) || e.changedTouches && findInArray(e.changedTouches, function (t) {
	    return identifier === t.identifier;
	  });
	}

	function getTouchIdentifier(e /*: MouseTouchEvent*/) /*: ?number*/ {
	  if (e.targetTouches && e.targetTouches[0]) return e.targetTouches[0].identifier;
	  if (e.changedTouches && e.changedTouches[0]) return e.changedTouches[0].identifier;
	}

	// User-select Hacks:
	//
	// Useful for preventing blue highlights all over everything when dragging.

	// Note we're passing `document` b/c we could be iframed
	function addUserSelectStyles(doc /*: ?Document*/) {
	  if (!doc) return;
	  var styleEl = doc.getElementById('react-draggable-style-el');
	  if (!styleEl) {
	    styleEl = doc.createElement('style');
	    styleEl.type = 'text/css';
	    styleEl.id = 'react-draggable-style-el';
	    styleEl.innerHTML = '.react-draggable-transparent-selection *::-moz-selection {background: transparent;}\n';
	    styleEl.innerHTML += '.react-draggable-transparent-selection *::selection {background: transparent;}\n';
	    doc.getElementsByTagName('head')[0].appendChild(styleEl);
	  }
	  if (doc.body) addClassName(doc.body, 'react-draggable-transparent-selection');
	}

	function removeUserSelectStyles(doc /*: ?Document*/) {
	  try {
	    if (doc && doc.body) removeClassName(doc.body, 'react-draggable-transparent-selection');
	    // $FlowIgnore: IE
	    if (doc.selection) {
	      // $FlowIgnore: IE
	      doc.selection.empty();
	    } else {
	      window.getSelection().removeAllRanges(); // remove selection caused by scroll
	    }
	  } catch (e) {
	    // probably IE
	  }
	}

	function styleHacks() /*: Object*/ {
	  var childStyle /*: Object*/ = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

	  // Workaround IE pointer events; see #51
	  // https://github.com/mzabriskie/react-draggable/issues/51#issuecomment-103488278
	  return _extends({
	    touchAction: 'none'
	  }, childStyle);
	}

	function addClassName(el /*: HTMLElement*/, className /*: string*/) {
	  if (el.classList) {
	    el.classList.add(className);
	  } else {
	    if (!el.className.match(new RegExp('(?:^|\\s)' + className + '(?!\\S)'))) {
	      el.className += ' ' + className;
	    }
	  }
	}

	function removeClassName(el /*: HTMLElement*/, className /*: string*/) {
	  if (el.classList) {
	    el.classList.remove(className);
	  } else {
	    el.className = el.className.replace(new RegExp('(?:^|\\s)' + className + '(?!\\S)', 'g'), '');
	  }
	}

	/*:: import type Draggable from '../Draggable';*/
	/*:: import type {Bounds, ControlPosition, DraggableData, MouseTouchEvent} from './types';*/
	/*:: import type DraggableCore from '../DraggableCore';*/


	function getBoundPosition(draggable /*: Draggable*/, x /*: number*/, y /*: number*/) /*: [number, number]*/ {
	  var bounds /*:: ?:Bounds|string|false*/ = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : draggable.props.bounds;

	  // If no bounds, short-circuit and move on
	  if (!bounds) return [x, y];

	  // Clone new bounds
	  bounds = typeof bounds === 'string' ? bounds : cloneBounds(bounds);
	  var node = findDOMNode(draggable);

	  if (typeof bounds === 'string') {
	    var ownerDocument = node.ownerDocument;

	    var ownerWindow = ownerDocument.defaultView;
	    var boundNode = void 0;
	    if (bounds === 'parent') {
	      boundNode = node.parentNode;
	    } else {
	      boundNode = ownerDocument.querySelector(bounds);
	    }

	    if (!(boundNode instanceof HTMLElement)) {
	      throw new Error('Bounds selector "' + bounds + '" could not find an element.');
	    }
	    // Add a resize listener for the bound node
	    draggable.boundsObserver.addBoundElementListener(boundNode);

	    var nodeStyle = ownerWindow.getComputedStyle(node);
	    var boundNodeStyle = ownerWindow.getComputedStyle(boundNode);
	    // Compute bounds. This is a pain with padding and offsets but this gets it exactly right.
	    bounds = {
	      left: -node.offsetLeft + int(boundNodeStyle.paddingLeft) + int(nodeStyle.marginLeft),
	      top: -node.offsetTop + int(boundNodeStyle.paddingTop) + int(nodeStyle.marginTop),
	      right: innerWidth(boundNode) - outerWidth(node) - node.offsetLeft + int(boundNodeStyle.paddingRight) - int(nodeStyle.marginRight),
	      bottom: innerHeight(boundNode) - outerHeight(node) - node.offsetTop + int(boundNodeStyle.paddingBottom) - int(nodeStyle.marginBottom)
	    };
	  }

	  // Keep x and y below right and bottom limits...
	  if (isNum(bounds.right)) x = Math.min(x, bounds.right);
	  if (isNum(bounds.bottom)) y = Math.min(y, bounds.bottom);

	  // But above left and top limits.
	  if (isNum(bounds.left)) x = Math.max(x, bounds.left);
	  if (isNum(bounds.top)) y = Math.max(y, bounds.top);

	  return [x, y];
	}

	function snapToGrid(grid /*: [number, number]*/, pendingX /*: number*/, pendingY /*: number*/) /*: [number, number]*/ {
	  var x = Math.round(pendingX / grid[0]) * grid[0];
	  var y = Math.round(pendingY / grid[1]) * grid[1];
	  return [x, y];
	}

	function canDragX(draggable /*: Draggable*/) /*: boolean*/ {
	  return draggable.props.axis === 'both' || draggable.props.axis === 'x';
	}

	function canDragY(draggable /*: Draggable*/) /*: boolean*/ {
	  return draggable.props.axis === 'both' || draggable.props.axis === 'y';
	}

	// Get {x, y} positions from event.
	function getControlPosition(e /*: MouseTouchEvent*/, touchIdentifier /*: ?number*/, draggableCore /*: DraggableCore*/) /*: ?ControlPosition*/ {
	  var touchObj = typeof touchIdentifier === 'number' ? getTouch(e, touchIdentifier) : null;
	  if (typeof touchIdentifier === 'number' && !touchObj) return null; // not the right touch
	  var node = findDOMNode(draggableCore);
	  // User can provide an offsetParent if desired.
	  var offsetParent = draggableCore.props.offsetParent || node.offsetParent || node.ownerDocument.body;
	  return offsetXYFromParent(touchObj || e, offsetParent);
	}

	// Create an data object exposed by <DraggableCore>'s events
	function createCoreData(draggable /*: DraggableCore*/, x /*: number*/, y /*: number*/) /*: DraggableData*/ {
	  var state = draggable.state;
	  var isStart = !isNum(state.lastX);
	  var node = findDOMNode(draggable);

	  if (isStart) {
	    // If this is our first move, use the x and y as last coords.
	    return {
	      node: node,
	      deltaX: 0, deltaY: 0,
	      lastX: x, lastY: y,
	      x: x, y: y
	    };
	  } else {
	    // Otherwise calculate proper values.
	    return {
	      node: node,
	      deltaX: x - state.lastX, deltaY: y - state.lastY,
	      lastX: state.lastX, lastY: state.lastY,
	      x: x, y: y
	    };
	  }
	}

	// Create an data exposed by <Draggable>'s events
	function createDraggableData(draggable /*: Draggable*/, coreData /*: DraggableData*/) /*: DraggableData*/ {
	  var scale = draggable.props.scale;
	  return {
	    node: coreData.node,
	    x: draggable.state.x + coreData.deltaX / scale,
	    y: draggable.state.y + coreData.deltaY / scale,
	    deltaX: coreData.deltaX / scale,
	    deltaY: coreData.deltaY / scale,
	    lastX: draggable.state.x,
	    lastY: draggable.state.y
	  };
	}

	// A lot faster than stringify/parse
	function cloneBounds(bounds /*: Bounds*/) /*: Bounds*/ {
	  return {
	    left: bounds.left,
	    top: bounds.top,
	    right: bounds.right,
	    bottom: bounds.bottom
	  };
	}

	function findDOMNode(draggable /*: Draggable | DraggableCore*/) /*: HTMLElement*/ {
	  var node = ReactDOM.findDOMNode(draggable);
	  if (!node) {
	    throw new Error('<DraggableCore>: Unmounted during event!');
	  }
	  // $FlowIgnore we can't assert on HTMLElement due to tests... FIXME
	  return node;
	}

	/*eslint no-console:0*/
	function log() {
	}

	/*:: import type {EventHandler, MouseTouchEvent} from './utils/types';*/


	// Simple abstraction for dragging events names.
	/*:: import type {Element as ReactElement} from 'react';*/
	var eventsFor = {
	  touch: {
	    start: 'touchstart',
	    move: 'touchmove',
	    stop: 'touchend'
	  },
	  mouse: {
	    start: 'mousedown',
	    move: 'mousemove',
	    stop: 'mouseup'
	  }
	};

	// Default to mouse events.
	var dragEventFor = eventsFor.mouse;

	/*:: type DraggableCoreState = {
	  dragging: boolean,
	  lastX: number,
	  lastY: number,
	  touchIdentifier: ?number
	};*/
	/*:: export type DraggableBounds = {
	  left: number,
	  right: number,
	  top: number,
	  bottom: number,
	};*/
	/*:: export type DraggableData = {
	  node: HTMLElement,
	  x: number, y: number,
	  deltaX: number, deltaY: number,
	  lastX: number, lastY: number,
	};*/
	/*:: export type DraggableEventHandler = (e: MouseEvent, data: DraggableData) => void;*/
	/*:: export type ControlPosition = {x: number, y: number};*/


	//
	// Define <DraggableCore>.
	//
	// <DraggableCore> is for advanced usage of <Draggable>. It maintains minimal internal state so it can
	// work well with libraries that require more control over the element.
	//

	/*:: export type DraggableCoreProps = {
	  allowAnyClick: boolean,
	  cancel: string,
	  children: ReactElement<any>,
	  disabled: boolean,
	  enableUserSelectHack: boolean,
	  offsetParent: HTMLElement,
	  grid: [number, number],
	  handle: string,
	  onStart: DraggableEventHandler,
	  onDrag: DraggableEventHandler,
	  onStop: DraggableEventHandler,
	  onMouseDown: (e: MouseEvent) => void,
	};*/

	var DraggableCore = function (_React$Component) {
	  inherits(DraggableCore, _React$Component);

	  function DraggableCore() {
	    var _ref;

	    var _temp, _this, _ret;

	    classCallCheck(this, DraggableCore);

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

	    return _ret = (_temp = (_this = possibleConstructorReturn(this, (_ref = DraggableCore.__proto__ || Object.getPrototypeOf(DraggableCore)).call.apply(_ref, [this].concat(args))), _this), _this.state = {
	      dragging: false,
	      // Used while dragging to determine deltas.
	      lastX: NaN, lastY: NaN,
	      touchIdentifier: null
	    }, _this.handleDragStart = function (e) {
	      // Make it possible to attach event handlers on top of this one.
	      _this.props.onMouseDown(e);

	      // Only accept left-clicks.
	      if (!_this.props.allowAnyClick && typeof e.button === 'number' && e.button !== 0) return false;

	      // Get nodes. Be sure to grab relative document (could be iframed)
	      var thisNode = ReactDOM.findDOMNode(_this);
	      if (!thisNode || !thisNode.ownerDocument || !thisNode.ownerDocument.body) {
	        throw new Error('<DraggableCore> not mounted on DragStart!');
	      }
	      var ownerDocument = thisNode.ownerDocument;

	      // Short circuit if handle or cancel prop was provided and selector doesn't match.

	      if (_this.props.disabled || !(e.target instanceof ownerDocument.defaultView.Node) || _this.props.handle && !matchesSelectorAndParentsTo(e.target, _this.props.handle, thisNode) || _this.props.cancel && matchesSelectorAndParentsTo(e.target, _this.props.cancel, thisNode)) {
	        return;
	      }

	      // Set touch identifier in component state if this is a touch event. This allows us to
	      // distinguish between individual touches on multitouch screens by identifying which
	      // touchpoint was set to this element.
	      var touchIdentifier = getTouchIdentifier(e);
	      _this.setState({ touchIdentifier: touchIdentifier });

	      // Get the current drag point from the event. This is used as the offset.
	      var position = getControlPosition(e, touchIdentifier, _this);
	      if (position == null) return; // not possible but satisfies flow
	      var x = position.x,
	          y = position.y;

	      // Create an event object with all the data parents need to make a decision here.

	      var coreEvent = createCoreData(_this, x, y);

	      // Call event handler. If it returns explicit false, cancel.
	      log('calling', _this.props.onStart);
	      var shouldUpdate = _this.props.onStart(e, coreEvent);
	      if (shouldUpdate === false) return;

	      // Add a style to the body to disable user-select. This prevents text from
	      // being selected all over the page.
	      if (_this.props.enableUserSelectHack) addUserSelectStyles(ownerDocument);

	      // Initiate dragging. Set the current x and y as offsets
	      // so we know how much we've moved during the drag. This allows us
	      // to drag elements around even if they have been moved, without issue.
	      _this.setState({
	        dragging: true,

	        lastX: x,
	        lastY: y
	      });

	      // Add events to the document directly so we catch when the user's mouse/touch moves outside of
	      // this element. We use different events depending on whether or not we have detected that this
	      // is a touch-capable device.
	      addEvent(ownerDocument, dragEventFor.move, _this.handleDrag);
	      addEvent(ownerDocument, dragEventFor.stop, _this.handleDragStop);
	    }, _this.handleDrag = function (e) {

	      // Prevent scrolling on mobile devices, like ipad/iphone.
	      if (e.type === 'touchmove') e.preventDefault();

	      // Get the current drag point from the event. This is used as the offset.
	      var position = getControlPosition(e, _this.state.touchIdentifier, _this);
	      if (position == null) return;
	      var x = position.x,
	          y = position.y;

	      // Snap to grid if prop has been provided

	      if (Array.isArray(_this.props.grid)) {
	        var _deltaX = x - _this.state.lastX,
	            _deltaY = y - _this.state.lastY;

	        var _snapToGrid = snapToGrid(_this.props.grid, _deltaX, _deltaY);

	        var _snapToGrid2 = slicedToArray(_snapToGrid, 2);

	        _deltaX = _snapToGrid2[0];
	        _deltaY = _snapToGrid2[1];

	        if (!_deltaX && !_deltaY) return; // skip useless drag
	        x = _this.state.lastX + _deltaX, y = _this.state.lastY + _deltaY;
	      }

	      var coreEvent = createCoreData(_this, x, y);

	      // Call event handler. If it returns explicit false, trigger end.
	      var shouldUpdate = _this.props.onDrag(e, coreEvent);
	      if (shouldUpdate === false) {
	        try {
	          // $FlowIgnore
	          _this.handleDragStop(new MouseEvent('mouseup'));
	        } catch (err) {
	          // Old browsers
	          var event = ((document.createEvent('MouseEvents') /*: any*/) /*: MouseTouchEvent*/);
	          // I see why this insanity was deprecated
	          // $FlowIgnore
	          event.initMouseEvent('mouseup', true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
	          _this.handleDragStop(event);
	        }
	        return;
	      }

	      _this.setState({
	        lastX: x,
	        lastY: y
	      });
	    }, _this.handleDragStop = function (e) {
	      if (!_this.state.dragging) return;

	      var position = getControlPosition(e, _this.state.touchIdentifier, _this);
	      if (position == null) return;
	      var x = position.x,
	          y = position.y;

	      var coreEvent = createCoreData(_this, x, y);

	      var thisNode = ReactDOM.findDOMNode(_this);
	      if (thisNode) {
	        // Remove user-select hack
	        if (_this.props.enableUserSelectHack) removeUserSelectStyles(thisNode.ownerDocument);
	      }

	      // Reset the el.
	      _this.setState({
	        dragging: false,
	        lastX: NaN,
	        lastY: NaN
	      });

	      // Call event handler
	      _this.props.onStop(e, coreEvent);

	      if (thisNode) {
	        removeEvent(thisNode.ownerDocument, dragEventFor.move, _this.handleDrag);
	        removeEvent(thisNode.ownerDocument, dragEventFor.stop, _this.handleDragStop);
	      }
	    }, _this.onMouseDown = function (e) {
	      dragEventFor = eventsFor.mouse; // on touchscreen laptops we could switch back to mouse

	      return _this.handleDragStart(e);
	    }, _this.onMouseUp = function (e) {
	      dragEventFor = eventsFor.mouse;

	      return _this.handleDragStop(e);
	    }, _this.onTouchStart = function (e) {
	      // We're on a touch device now, so change the event handlers
	      dragEventFor = eventsFor.touch;

	      return _this.handleDragStart(e);
	    }, _this.onTouchEnd = function (e) {
	      // We're on a touch device now, so change the event handlers
	      dragEventFor = eventsFor.touch;

	      return _this.handleDragStop(e);
	    }, _temp), possibleConstructorReturn(_this, _ret);
	  }

	  createClass(DraggableCore, [{
	    key: 'componentWillUnmount',
	    value: function componentWillUnmount() {
	      // Remove any leftover event handlers. Remove both touch and mouse handlers in case
	      // some browser quirk caused a touch event to fire during a mouse move, or vice versa.
	      var thisNode = ReactDOM.findDOMNode(this);
	      if (thisNode) {
	        var ownerDocument = thisNode.ownerDocument;

	        removeEvent(ownerDocument, eventsFor.mouse.move, this.handleDrag);
	        removeEvent(ownerDocument, eventsFor.touch.move, this.handleDrag);
	        removeEvent(ownerDocument, eventsFor.mouse.stop, this.handleDragStop);
	        removeEvent(ownerDocument, eventsFor.touch.stop, this.handleDragStop);
	        if (this.props.enableUserSelectHack) removeUserSelectStyles(ownerDocument);
	      }
	    }

	    // Same as onMouseDown (start drag), but now consider this a touch device.

	  }, {
	    key: 'render',
	    value: function render() {
	      // Reuse the child provided
	      // This makes it flexible to use whatever element is wanted (div, ul, etc)
	      return React.cloneElement(React.Children.only(this.props.children), {
	        style: styleHacks(this.props.children.props.style),

	        // Note: mouseMove handler is attached to document so it will still function
	        // when the user drags quickly and leaves the bounds of the element.
	        onMouseDown: this.onMouseDown,
	        onTouchStart: this.onTouchStart,
	        onMouseUp: this.onMouseUp,
	        onTouchEnd: this.onTouchEnd
	      });
	    }
	  }]);
	  return DraggableCore;
	}(React.Component);

	DraggableCore.displayName = 'DraggableCore';
	DraggableCore.propTypes = {
	  /**
	   * `allowAnyClick` allows dragging using any mouse button.
	   * By default, we only accept the left button.
	   *
	   * Defaults to `false`.
	   */
	  allowAnyClick: propTypes.bool,

	  /**
	   * `disabled`, if true, stops the <Draggable> from dragging. All handlers,
	   * with the exception of `onMouseDown`, will not fire.
	   */
	  disabled: propTypes.bool,

	  /**
	   * By default, we add 'user-select:none' attributes to the document body
	   * to prevent ugly text selection during drag. If this is causing problems
	   * for your app, set this to `false`.
	   */
	  enableUserSelectHack: propTypes.bool,

	  /**
	   * `offsetParent`, if set, uses the passed DOM node to compute drag offsets
	   * instead of using the parent node.
	   */
	  offsetParent: function offsetParent(props /*: DraggableCoreProps*/, propName /*: $Keys<DraggableCoreProps>*/) {
	    if (props[propName] && props[propName].nodeType !== 1) {
	      throw new Error('Draggable\'s offsetParent must be a DOM Node.');
	    }
	  },

	  /**
	   * `grid` specifies the x and y that dragging should snap to.
	   */
	  grid: propTypes.arrayOf(propTypes.number),

	  /**
	   * `scale` specifies the scale of the area you are dragging inside of. It allows
	   * the drag deltas to scale correctly with how far zoomed in/out you are.
	   */
	  scale: propTypes.number,

	  /**
	   * `handle` specifies a selector to be used as the handle that initiates drag.
	   *
	   * Example:
	   *
	   * ```jsx
	   *   let App = React.createClass({
	   *       render: function () {
	   *         return (
	   *            <Draggable handle=".handle">
	   *              <div>
	   *                  <div className="handle">Click me to drag</div>
	   *                  <div>This is some other content</div>
	   *              </div>
	   *           </Draggable>
	   *         );
	   *       }
	   *   });
	   * ```
	   */
	  handle: propTypes.string,

	  /**
	   * `cancel` specifies a selector to be used to prevent drag initialization.
	   *
	   * Example:
	   *
	   * ```jsx
	   *   let App = React.createClass({
	   *       render: function () {
	   *           return(
	   *               <Draggable cancel=".cancel">
	   *                   <div>
	   *                     <div className="cancel">You can't drag from here</div>
	   *                     <div>Dragging here works fine</div>
	   *                   </div>
	   *               </Draggable>
	   *           );
	   *       }
	   *   });
	   * ```
	   */
	  cancel: propTypes.string,

	  /**
	   * Called when dragging starts.
	   * If this function returns the boolean false, dragging will be canceled.
	   */
	  onStart: propTypes.func,

	  /**
	   * Called while dragging.
	   * If this function returns the boolean false, dragging will be canceled.
	   */
	  onDrag: propTypes.func,

	  /**
	   * Called when dragging stops.
	   * If this function returns the boolean false, the drag will remain active.
	   */
	  onStop: propTypes.func,

	  /**
	   * A workaround option which can be passed if onMouseDown needs to be accessed,
	   * since it'll always be blocked (as there is internal use of onMouseDown)
	   */
	  onMouseDown: propTypes.func,

	  /**
	   * These properties should be defined on the child, not here.
	   */
	  className: dontSetMe,
	  style: dontSetMe,
	  transform: dontSetMe
	};
	DraggableCore.defaultProps = {
	  allowAnyClick: false, // by default only accept left click
	  cancel: null,
	  disabled: false,
	  enableUserSelectHack: true,
	  offsetParent: null,
	  handle: null,
	  grid: null,
	  transform: null,
	  onStart: function onStart() {},
	  onDrag: function onDrag() {},
	  onStop: function onStop() {},
	  onMouseDown: function onMouseDown() {}
	};

	/**
	 * A collection of shims that provide minimal functionality of the ES6 collections.
	 *
	 * These implementations are not meant to be used outside of the ResizeObserver
	 * modules as they cover only a limited range of use cases.
	 */
	/* eslint-disable require-jsdoc, valid-jsdoc */
	var MapShim = (function () {
	    if (typeof Map !== 'undefined') {
	        return Map;
	    }

	    /**
	     * Returns index in provided array that matches the specified key.
	     *
	     * @param {Array<Array>} arr
	     * @param {*} key
	     * @returns {number}
	     */
	    function getIndex(arr, key) {
	        var result = -1;

	        arr.some(function (entry, index) {
	            if (entry[0] === key) {
	                result = index;

	                return true;
	            }

	            return false;
	        });

	        return result;
	    }

	    return (function () {
	        function anonymous() {
	            this.__entries__ = [];
	        }

	        var prototypeAccessors = { size: { configurable: true } };

	        /**
	         * @returns {boolean}
	         */
	        prototypeAccessors.size.get = function () {
	            return this.__entries__.length;
	        };

	        /**
	         * @param {*} key
	         * @returns {*}
	         */
	        anonymous.prototype.get = function (key) {
	            var index = getIndex(this.__entries__, key);
	            var entry = this.__entries__[index];

	            return entry && entry[1];
	        };

	        /**
	         * @param {*} key
	         * @param {*} value
	         * @returns {void}
	         */
	        anonymous.prototype.set = function (key, value) {
	            var index = getIndex(this.__entries__, key);

	            if (~index) {
	                this.__entries__[index][1] = value;
	            } else {
	                this.__entries__.push([key, value]);
	            }
	        };

	        /**
	         * @param {*} key
	         * @returns {void}
	         */
	        anonymous.prototype.delete = function (key) {
	            var entries = this.__entries__;
	            var index = getIndex(entries, key);

	            if (~index) {
	                entries.splice(index, 1);
	            }
	        };

	        /**
	         * @param {*} key
	         * @returns {void}
	         */
	        anonymous.prototype.has = function (key) {
	            return !!~getIndex(this.__entries__, key);
	        };

	        /**
	         * @returns {void}
	         */
	        anonymous.prototype.clear = function () {
	            this.__entries__.splice(0);
	        };

	        /**
	         * @param {Function} callback
	         * @param {*} [ctx=null]
	         * @returns {void}
	         */
	        anonymous.prototype.forEach = function (callback, ctx) {
	            var this$1 = this;
	            if ( ctx === void 0 ) ctx = null;

	            for (var i = 0, list = this$1.__entries__; i < list.length; i += 1) {
	                var entry = list[i];

	                callback.call(ctx, entry[1], entry[0]);
	            }
	        };

	        Object.defineProperties( anonymous.prototype, prototypeAccessors );

	        return anonymous;
	    }());
	})();

	/**
	 * Detects whether window and document objects are available in current environment.
	 */
	var isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined' && window.document === document;

	// Returns global object of a current environment.
	var global$1 = (function () {
	    if (typeof global !== 'undefined' && global.Math === Math) {
	        return global;
	    }

	    if (typeof self !== 'undefined' && self.Math === Math) {
	        return self;
	    }

	    if (typeof window !== 'undefined' && window.Math === Math) {
	        return window;
	    }

	    // eslint-disable-next-line no-new-func
	    return Function('return this')();
	})();

	/**
	 * A shim for the requestAnimationFrame which falls back to the setTimeout if
	 * first one is not supported.
	 *
	 * @returns {number} Requests' identifier.
	 */
	var requestAnimationFrame$1 = (function () {
	    if (typeof requestAnimationFrame === 'function') {
	        // It's required to use a bounded function because IE sometimes throws
	        // an "Invalid calling object" error if rAF is invoked without the global
	        // object on the left hand side.
	        return requestAnimationFrame.bind(global$1);
	    }

	    return function (callback) { return setTimeout(function () { return callback(Date.now()); }, 1000 / 60); };
	})();

	// Defines minimum timeout before adding a trailing call.
	var trailingTimeout = 2;

	/**
	 * Creates a wrapper function which ensures that provided callback will be
	 * invoked only once during the specified delay period.
	 *
	 * @param {Function} callback - Function to be invoked after the delay period.
	 * @param {number} delay - Delay after which to invoke callback.
	 * @returns {Function}
	 */
	var throttle = function (callback, delay) {
	    var leadingCall = false,
	        trailingCall = false,
	        lastCallTime = 0;

	    /**
	     * Invokes the original callback function and schedules new invocation if
	     * the "proxy" was called during current request.
	     *
	     * @returns {void}
	     */
	    function resolvePending() {
	        if (leadingCall) {
	            leadingCall = false;

	            callback();
	        }

	        if (trailingCall) {
	            proxy();
	        }
	    }

	    /**
	     * Callback invoked after the specified delay. It will further postpone
	     * invocation of the original function delegating it to the
	     * requestAnimationFrame.
	     *
	     * @returns {void}
	     */
	    function timeoutCallback() {
	        requestAnimationFrame$1(resolvePending);
	    }

	    /**
	     * Schedules invocation of the original function.
	     *
	     * @returns {void}
	     */
	    function proxy() {
	        var timeStamp = Date.now();

	        if (leadingCall) {
	            // Reject immediately following calls.
	            if (timeStamp - lastCallTime < trailingTimeout) {
	                return;
	            }

	            // Schedule new call to be in invoked when the pending one is resolved.
	            // This is important for "transitions" which never actually start
	            // immediately so there is a chance that we might miss one if change
	            // happens amids the pending invocation.
	            trailingCall = true;
	        } else {
	            leadingCall = true;
	            trailingCall = false;

	            setTimeout(timeoutCallback, delay);
	        }

	        lastCallTime = timeStamp;
	    }

	    return proxy;
	};

	// Minimum delay before invoking the update of observers.
	var REFRESH_DELAY = 20;

	// A list of substrings of CSS properties used to find transition events that
	// might affect dimensions of observed elements.
	var transitionKeys = ['top', 'right', 'bottom', 'left', 'width', 'height', 'size', 'weight'];

	// Check if MutationObserver is available.
	var mutationObserverSupported = typeof MutationObserver !== 'undefined';

	/**
	 * Singleton controller class which handles updates of ResizeObserver instances.
	 */
	var ResizeObserverController = function() {
	    this.connected_ = false;
	    this.mutationEventsAdded_ = false;
	    this.mutationsObserver_ = null;
	    this.observers_ = [];

	    this.onTransitionEnd_ = this.onTransitionEnd_.bind(this);
	    this.refresh = throttle(this.refresh.bind(this), REFRESH_DELAY);
	};

	/**
	 * Adds observer to observers list.
	 *
	 * @param {ResizeObserverSPI} observer - Observer to be added.
	 * @returns {void}
	 */


	/**
	 * Holds reference to the controller's instance.
	 *
	 * @private {ResizeObserverController}
	 */


	/**
	 * Keeps reference to the instance of MutationObserver.
	 *
	 * @private {MutationObserver}
	 */

	/**
	 * Indicates whether DOM listeners have been added.
	 *
	 * @private {boolean}
	 */
	ResizeObserverController.prototype.addObserver = function (observer) {
	    if (!~this.observers_.indexOf(observer)) {
	        this.observers_.push(observer);
	    }

	    // Add listeners if they haven't been added yet.
	    if (!this.connected_) {
	        this.connect_();
	    }
	};

	/**
	 * Removes observer from observers list.
	 *
	 * @param {ResizeObserverSPI} observer - Observer to be removed.
	 * @returns {void}
	 */
	ResizeObserverController.prototype.removeObserver = function (observer) {
	    var observers = this.observers_;
	    var index = observers.indexOf(observer);

	    // Remove observer if it's present in registry.
	    if (~index) {
	        observers.splice(index, 1);
	    }

	    // Remove listeners if controller has no connected observers.
	    if (!observers.length && this.connected_) {
	        this.disconnect_();
	    }
	};

	/**
	 * Invokes the update of observers. It will continue running updates insofar
	 * it detects changes.
	 *
	 * @returns {void}
	 */
	ResizeObserverController.prototype.refresh = function () {
	    var changesDetected = this.updateObservers_();

	    // Continue running updates if changes have been detected as there might
	    // be future ones caused by CSS transitions.
	    if (changesDetected) {
	        this.refresh();
	    }
	};

	/**
	 * Updates every observer from observers list and notifies them of queued
	 * entries.
	 *
	 * @private
	 * @returns {boolean} Returns "true" if any observer has detected changes in
	 *  dimensions of it's elements.
	 */
	ResizeObserverController.prototype.updateObservers_ = function () {
	    // Collect observers that have active observations.
	    var activeObservers = this.observers_.filter(function (observer) {
	        return observer.gatherActive(), observer.hasActive();
	    });

	    // Deliver notifications in a separate cycle in order to avoid any
	    // collisions between observers, e.g. when multiple instances of
	    // ResizeObserver are tracking the same element and the callback of one
	    // of them changes content dimensions of the observed target. Sometimes
	    // this may result in notifications being blocked for the rest of observers.
	    activeObservers.forEach(function (observer) { return observer.broadcastActive(); });

	    return activeObservers.length > 0;
	};

	/**
	 * Initializes DOM listeners.
	 *
	 * @private
	 * @returns {void}
	 */
	ResizeObserverController.prototype.connect_ = function () {
	    // Do nothing if running in a non-browser environment or if listeners
	    // have been already added.
	    if (!isBrowser || this.connected_) {
	        return;
	    }

	    // Subscription to the "Transitionend" event is used as a workaround for
	    // delayed transitions. This way it's possible to capture at least the
	    // final state of an element.
	    document.addEventListener('transitionend', this.onTransitionEnd_);

	    window.addEventListener('resize', this.refresh);

	    if (mutationObserverSupported) {
	        this.mutationsObserver_ = new MutationObserver(this.refresh);

	        this.mutationsObserver_.observe(document, {
	            attributes: true,
	            childList: true,
	            characterData: true,
	            subtree: true
	        });
	    } else {
	        document.addEventListener('DOMSubtreeModified', this.refresh);

	        this.mutationEventsAdded_ = true;
	    }

	    this.connected_ = true;
	};

	/**
	 * Removes DOM listeners.
	 *
	 * @private
	 * @returns {void}
	 */
	ResizeObserverController.prototype.disconnect_ = function () {
	    // Do nothing if running in a non-browser environment or if listeners
	    // have been already removed.
	    if (!isBrowser || !this.connected_) {
	        return;
	    }

	    document.removeEventListener('transitionend', this.onTransitionEnd_);
	    window.removeEventListener('resize', this.refresh);

	    if (this.mutationsObserver_) {
	        this.mutationsObserver_.disconnect();
	    }

	    if (this.mutationEventsAdded_) {
	        document.removeEventListener('DOMSubtreeModified', this.refresh);
	    }

	    this.mutationsObserver_ = null;
	    this.mutationEventsAdded_ = false;
	    this.connected_ = false;
	};

	/**
	 * "Transitionend" event handler.
	 *
	 * @private
	 * @param {TransitionEvent} event
	 * @returns {void}
	 */
	ResizeObserverController.prototype.onTransitionEnd_ = function (ref) {
	        var propertyName = ref.propertyName; if ( propertyName === void 0 ) propertyName = '';

	    // Detect whether transition may affect dimensions of an element.
	    var isReflowProperty = transitionKeys.some(function (key) {
	        return !!~propertyName.indexOf(key);
	    });

	    if (isReflowProperty) {
	        this.refresh();
	    }
	};

	/**
	 * Returns instance of the ResizeObserverController.
	 *
	 * @returns {ResizeObserverController}
	 */
	ResizeObserverController.getInstance = function () {
	    if (!this.instance_) {
	        this.instance_ = new ResizeObserverController();
	    }

	    return this.instance_;
	};

	ResizeObserverController.instance_ = null;

	/**
	 * Defines non-writable/enumerable properties of the provided target object.
	 *
	 * @param {Object} target - Object for which to define properties.
	 * @param {Object} props - Properties to be defined.
	 * @returns {Object} Target object.
	 */
	var defineConfigurable = (function (target, props) {
	    for (var i = 0, list = Object.keys(props); i < list.length; i += 1) {
	        var key = list[i];

	        Object.defineProperty(target, key, {
	            value: props[key],
	            enumerable: false,
	            writable: false,
	            configurable: true
	        });
	    }

	    return target;
	});

	/**
	 * Returns the global object associated with provided element.
	 *
	 * @param {Object} target
	 * @returns {Object}
	 */
	var getWindowOf = (function (target) {
	    // Assume that the element is an instance of Node, which means that it
	    // has the "ownerDocument" property from which we can retrieve a
	    // corresponding global object.
	    var ownerGlobal = target && target.ownerDocument && target.ownerDocument.defaultView;

	    // Return the local global object if it's not possible extract one from
	    // provided element.
	    return ownerGlobal || global$1;
	});

	// Placeholder of an empty content rectangle.
	var emptyRect = createRectInit(0, 0, 0, 0);

	/**
	 * Converts provided string to a number.
	 *
	 * @param {number|string} value
	 * @returns {number}
	 */
	function toFloat(value) {
	    return parseFloat(value) || 0;
	}

	/**
	 * Extracts borders size from provided styles.
	 *
	 * @param {CSSStyleDeclaration} styles
	 * @param {...string} positions - Borders positions (top, right, ...)
	 * @returns {number}
	 */
	function getBordersSize(styles) {
	    var positions = [], len = arguments.length - 1;
	    while ( len-- > 0 ) positions[ len ] = arguments[ len + 1 ];

	    return positions.reduce(function (size, position) {
	        var value = styles['border-' + position + '-width'];

	        return size + toFloat(value);
	    }, 0);
	}

	/**
	 * Extracts paddings sizes from provided styles.
	 *
	 * @param {CSSStyleDeclaration} styles
	 * @returns {Object} Paddings box.
	 */
	function getPaddings(styles) {
	    var positions = ['top', 'right', 'bottom', 'left'];
	    var paddings = {};

	    for (var i = 0, list = positions; i < list.length; i += 1) {
	        var position = list[i];

	        var value = styles['padding-' + position];

	        paddings[position] = toFloat(value);
	    }

	    return paddings;
	}

	/**
	 * Calculates content rectangle of provided SVG element.
	 *
	 * @param {SVGGraphicsElement} target - Element content rectangle of which needs
	 *      to be calculated.
	 * @returns {DOMRectInit}
	 */
	function getSVGContentRect(target) {
	    var bbox = target.getBBox();

	    return createRectInit(0, 0, bbox.width, bbox.height);
	}

	/**
	 * Calculates content rectangle of provided HTMLElement.
	 *
	 * @param {HTMLElement} target - Element for which to calculate the content rectangle.
	 * @returns {DOMRectInit}
	 */
	function getHTMLElementContentRect(target) {
	    // Client width & height properties can't be
	    // used exclusively as they provide rounded values.
	    var clientWidth = target.clientWidth;
	    var clientHeight = target.clientHeight;

	    // By this condition we can catch all non-replaced inline, hidden and
	    // detached elements. Though elements with width & height properties less
	    // than 0.5 will be discarded as well.
	    //
	    // Without it we would need to implement separate methods for each of
	    // those cases and it's not possible to perform a precise and performance
	    // effective test for hidden elements. E.g. even jQuery's ':visible' filter
	    // gives wrong results for elements with width & height less than 0.5.
	    if (!clientWidth && !clientHeight) {
	        return emptyRect;
	    }

	    var styles = getWindowOf(target).getComputedStyle(target);
	    var paddings = getPaddings(styles);
	    var horizPad = paddings.left + paddings.right;
	    var vertPad = paddings.top + paddings.bottom;

	    // Computed styles of width & height are being used because they are the
	    // only dimensions available to JS that contain non-rounded values. It could
	    // be possible to utilize the getBoundingClientRect if only it's data wasn't
	    // affected by CSS transformations let alone paddings, borders and scroll bars.
	    var width = toFloat(styles.width),
	        height = toFloat(styles.height);

	    // Width & height include paddings and borders when the 'border-box' box
	    // model is applied (except for IE).
	    if (styles.boxSizing === 'border-box') {
	        // Following conditions are required to handle Internet Explorer which
	        // doesn't include paddings and borders to computed CSS dimensions.
	        //
	        // We can say that if CSS dimensions + paddings are equal to the "client"
	        // properties then it's either IE, and thus we don't need to subtract
	        // anything, or an element merely doesn't have paddings/borders styles.
	        if (Math.round(width + horizPad) !== clientWidth) {
	            width -= getBordersSize(styles, 'left', 'right') + horizPad;
	        }

	        if (Math.round(height + vertPad) !== clientHeight) {
	            height -= getBordersSize(styles, 'top', 'bottom') + vertPad;
	        }
	    }

	    // Following steps can't be applied to the document's root element as its
	    // client[Width/Height] properties represent viewport area of the window.
	    // Besides, it's as well not necessary as the <html> itself neither has
	    // rendered scroll bars nor it can be clipped.
	    if (!isDocumentElement(target)) {
	        // In some browsers (only in Firefox, actually) CSS width & height
	        // include scroll bars size which can be removed at this step as scroll
	        // bars are the only difference between rounded dimensions + paddings
	        // and "client" properties, though that is not always true in Chrome.
	        var vertScrollbar = Math.round(width + horizPad) - clientWidth;
	        var horizScrollbar = Math.round(height + vertPad) - clientHeight;

	        // Chrome has a rather weird rounding of "client" properties.
	        // E.g. for an element with content width of 314.2px it sometimes gives
	        // the client width of 315px and for the width of 314.7px it may give
	        // 314px. And it doesn't happen all the time. So just ignore this delta
	        // as a non-relevant.
	        if (Math.abs(vertScrollbar) !== 1) {
	            width -= vertScrollbar;
	        }

	        if (Math.abs(horizScrollbar) !== 1) {
	            height -= horizScrollbar;
	        }
	    }

	    return createRectInit(paddings.left, paddings.top, width, height);
	}

	/**
	 * Checks whether provided element is an instance of the SVGGraphicsElement.
	 *
	 * @param {Element} target - Element to be checked.
	 * @returns {boolean}
	 */
	var isSVGGraphicsElement = (function () {
	    // Some browsers, namely IE and Edge, don't have the SVGGraphicsElement
	    // interface.
	    if (typeof SVGGraphicsElement !== 'undefined') {
	        return function (target) { return target instanceof getWindowOf(target).SVGGraphicsElement; };
	    }

	    // If it's so, then check that element is at least an instance of the
	    // SVGElement and that it has the "getBBox" method.
	    // eslint-disable-next-line no-extra-parens
	    return function (target) { return target instanceof getWindowOf(target).SVGElement && typeof target.getBBox === 'function'; };
	})();

	/**
	 * Checks whether provided element is a document element (<html>).
	 *
	 * @param {Element} target - Element to be checked.
	 * @returns {boolean}
	 */
	function isDocumentElement(target) {
	    return target === getWindowOf(target).document.documentElement;
	}

	/**
	 * Calculates an appropriate content rectangle for provided html or svg element.
	 *
	 * @param {Element} target - Element content rectangle of which needs to be calculated.
	 * @returns {DOMRectInit}
	 */
	function getContentRect(target) {
	    if (!isBrowser) {
	        return emptyRect;
	    }

	    if (isSVGGraphicsElement(target)) {
	        return getSVGContentRect(target);
	    }

	    return getHTMLElementContentRect(target);
	}

	/**
	 * Creates rectangle with an interface of the DOMRectReadOnly.
	 * Spec: https://drafts.fxtf.org/geometry/#domrectreadonly
	 *
	 * @param {DOMRectInit} rectInit - Object with rectangle's x/y coordinates and dimensions.
	 * @returns {DOMRectReadOnly}
	 */
	function createReadOnlyRect(ref) {
	    var x = ref.x;
	    var y = ref.y;
	    var width = ref.width;
	    var height = ref.height;

	    // If DOMRectReadOnly is available use it as a prototype for the rectangle.
	    var Constr = typeof DOMRectReadOnly !== 'undefined' ? DOMRectReadOnly : Object;
	    var rect = Object.create(Constr.prototype);

	    // Rectangle's properties are not writable and non-enumerable.
	    defineConfigurable(rect, {
	        x: x, y: y, width: width, height: height,
	        top: y,
	        right: x + width,
	        bottom: height + y,
	        left: x
	    });

	    return rect;
	}

	/**
	 * Creates DOMRectInit object based on the provided dimensions and the x/y coordinates.
	 * Spec: https://drafts.fxtf.org/geometry/#dictdef-domrectinit
	 *
	 * @param {number} x - X coordinate.
	 * @param {number} y - Y coordinate.
	 * @param {number} width - Rectangle's width.
	 * @param {number} height - Rectangle's height.
	 * @returns {DOMRectInit}
	 */
	function createRectInit(x, y, width, height) {
	    return { x: x, y: y, width: width, height: height };
	}

	/**
	 * Class that is responsible for computations of the content rectangle of
	 * provided DOM element and for keeping track of it's changes.
	 */
	var ResizeObservation = function(target) {
	    this.broadcastWidth = 0;
	    this.broadcastHeight = 0;
	    this.contentRect_ = createRectInit(0, 0, 0, 0);

	    this.target = target;
	};

	/**
	 * Updates content rectangle and tells whether it's width or height properties
	 * have changed since the last broadcast.
	 *
	 * @returns {boolean}
	 */


	/**
	 * Reference to the last observed content rectangle.
	 *
	 * @private {DOMRectInit}
	 */


	/**
	 * Broadcasted width of content rectangle.
	 *
	 * @type {number}
	 */
	ResizeObservation.prototype.isActive = function () {
	    var rect = getContentRect(this.target);

	    this.contentRect_ = rect;

	    return rect.width !== this.broadcastWidth || rect.height !== this.broadcastHeight;
	};

	/**
	 * Updates 'broadcastWidth' and 'broadcastHeight' properties with a data
	 * from the corresponding properties of the last observed content rectangle.
	 *
	 * @returns {DOMRectInit} Last observed content rectangle.
	 */
	ResizeObservation.prototype.broadcastRect = function () {
	    var rect = this.contentRect_;

	    this.broadcastWidth = rect.width;
	    this.broadcastHeight = rect.height;

	    return rect;
	};

	var ResizeObserverEntry = function(target, rectInit) {
	    var contentRect = createReadOnlyRect(rectInit);

	    // According to the specification following properties are not writable
	    // and are also not enumerable in the native implementation.
	    //
	    // Property accessors are not being used as they'd require to define a
	    // private WeakMap storage which may cause memory leaks in browsers that
	    // don't support this type of collections.
	    defineConfigurable(this, { target: target, contentRect: contentRect });
	};

	var ResizeObserverSPI = function(callback, controller, callbackCtx) {
	    this.activeObservations_ = [];
	    this.observations_ = new MapShim();

	    if (typeof callback !== 'function') {
	        throw new TypeError('The callback provided as parameter 1 is not a function.');
	    }

	    this.callback_ = callback;
	    this.controller_ = controller;
	    this.callbackCtx_ = callbackCtx;
	};

	/**
	 * Starts observing provided element.
	 *
	 * @param {Element} target - Element to be observed.
	 * @returns {void}
	 */


	/**
	 * Registry of the ResizeObservation instances.
	 *
	 * @private {Map<Element, ResizeObservation>}
	 */


	/**
	 * Public ResizeObserver instance which will be passed to the callback
	 * function and used as a value of it's "this" binding.
	 *
	 * @private {ResizeObserver}
	 */

	/**
	 * Collection of resize observations that have detected changes in dimensions
	 * of elements.
	 *
	 * @private {Array<ResizeObservation>}
	 */
	ResizeObserverSPI.prototype.observe = function (target) {
	    if (!arguments.length) {
	        throw new TypeError('1 argument required, but only 0 present.');
	    }

	    // Do nothing if current environment doesn't have the Element interface.
	    if (typeof Element === 'undefined' || !(Element instanceof Object)) {
	        return;
	    }

	    if (!(target instanceof getWindowOf(target).Element)) {
	        throw new TypeError('parameter 1 is not of type "Element".');
	    }

	    var observations = this.observations_;

	    // Do nothing if element is already being observed.
	    if (observations.has(target)) {
	        return;
	    }

	    observations.set(target, new ResizeObservation(target));

	    this.controller_.addObserver(this);

	    // Force the update of observations.
	    this.controller_.refresh();
	};

	/**
	 * Stops observing provided element.
	 *
	 * @param {Element} target - Element to stop observing.
	 * @returns {void}
	 */
	ResizeObserverSPI.prototype.unobserve = function (target) {
	    if (!arguments.length) {
	        throw new TypeError('1 argument required, but only 0 present.');
	    }

	    // Do nothing if current environment doesn't have the Element interface.
	    if (typeof Element === 'undefined' || !(Element instanceof Object)) {
	        return;
	    }

	    if (!(target instanceof getWindowOf(target).Element)) {
	        throw new TypeError('parameter 1 is not of type "Element".');
	    }

	    var observations = this.observations_;

	    // Do nothing if element is not being observed.
	    if (!observations.has(target)) {
	        return;
	    }

	    observations.delete(target);

	    if (!observations.size) {
	        this.controller_.removeObserver(this);
	    }
	};

	/**
	 * Stops observing all elements.
	 *
	 * @returns {void}
	 */
	ResizeObserverSPI.prototype.disconnect = function () {
	    this.clearActive();
	    this.observations_.clear();
	    this.controller_.removeObserver(this);
	};

	/**
	 * Collects observation instances the associated element of which has changed
	 * it's content rectangle.
	 *
	 * @returns {void}
	 */
	ResizeObserverSPI.prototype.gatherActive = function () {
	        var this$1 = this;

	    this.clearActive();

	    this.observations_.forEach(function (observation) {
	        if (observation.isActive()) {
	            this$1.activeObservations_.push(observation);
	        }
	    });
	};

	/**
	 * Invokes initial callback function with a list of ResizeObserverEntry
	 * instances collected from active resize observations.
	 *
	 * @returns {void}
	 */
	ResizeObserverSPI.prototype.broadcastActive = function () {
	    // Do nothing if observer doesn't have active observations.
	    if (!this.hasActive()) {
	        return;
	    }

	    var ctx = this.callbackCtx_;

	    // Create ResizeObserverEntry instance for every active observation.
	    var entries = this.activeObservations_.map(function (observation) {
	        return new ResizeObserverEntry(observation.target, observation.broadcastRect());
	    });

	    this.callback_.call(ctx, entries, ctx);
	    this.clearActive();
	};

	/**
	 * Clears the collection of active observations.
	 *
	 * @returns {void}
	 */
	ResizeObserverSPI.prototype.clearActive = function () {
	    this.activeObservations_.splice(0);
	};

	/**
	 * Tells whether observer has active observations.
	 *
	 * @returns {boolean}
	 */
	ResizeObserverSPI.prototype.hasActive = function () {
	    return this.activeObservations_.length > 0;
	};

	// Registry of internal observers. If WeakMap is not available use current shim
	// for the Map collection as it has all required methods and because WeakMap
	// can't be fully polyfilled anyway.
	var observers = typeof WeakMap !== 'undefined' ? new WeakMap() : new MapShim();

	/**
	 * ResizeObserver API. Encapsulates the ResizeObserver SPI implementation
	 * exposing only those methods and properties that are defined in the spec.
	 */
	var ResizeObserver = function(callback) {
	    if (!(this instanceof ResizeObserver)) {
	        throw new TypeError('Cannot call a class as a function.');
	    }
	    if (!arguments.length) {
	        throw new TypeError('1 argument required, but only 0 present.');
	    }

	    var controller = ResizeObserverController.getInstance();
	    var observer = new ResizeObserverSPI(callback, controller, this);

	    observers.set(this, observer);
	};

	// Expose public methods of ResizeObserver.
	['observe', 'unobserve', 'disconnect'].forEach(function (method) {
	    ResizeObserver.prototype[method] = function () {
	        return (ref = observers.get(this))[method].apply(ref, arguments);
	        var ref;
	    };
	});

	var index = (function () {
	    // Export existing implementation if available.
	    if (typeof global$1.ResizeObserver !== 'undefined') {
	        return global$1.ResizeObserver;
	    }

	    return ResizeObserver;
	})();

	var BoundsObserver = function () {
	  function BoundsObserver(draggable /*: Draggable*/) {
	    classCallCheck(this, BoundsObserver);

	    this.ro = new index(function () {
	      var _getBoundPosition = getBoundPosition(draggable, draggable.state.x, draggable.state.y, draggable.bounds),
	          _getBoundPosition2 = slicedToArray(_getBoundPosition, 2),
	          x = _getBoundPosition2[0],
	          y = _getBoundPosition2[1];

	      draggable.setState({ x: x, y: y });
	    });
	  }

	  createClass(BoundsObserver, [{
	    key: 'addBoundElementListener',
	    value: function addBoundElementListener(e /*: HTMLElement*/) {
	      if (this.boundElement) {
	        this.ro.unobserve(this.boundElement);
	      }
	      this.boundElement = e;
	      this.ro.observe(this.boundElement);
	    }
	  }, {
	    key: 'removeBoundElementListener',
	    value: function removeBoundElementListener() {
	      this.ro.unobserve(this.boundElement);
	      this.boundElement = undefined;
	    }
	  }]);
	  return BoundsObserver;
	}();

	var boundsChanged = function boundsChanged(currentBounds, nextBounds) {
	  if (currentBounds !== nextBounds) return true;else if ((typeof nextBounds === 'undefined' ? 'undefined' : _typeof(nextBounds)) === 'object' && (typeof currentBounds === 'undefined' ? 'undefined' : _typeof(currentBounds)) === 'object') {
	    return Object.keys(currentBounds).length !== Object.keys(nextBounds).length || Object.keys(nextBounds).some(function (k) {
	      return nextBounds[k] !== currentBounds[k];
	    });
	  }
	  return false;
	};

	var positionChanged = function positionChanged(currentPosition, nextPosition) {
	  if (!currentPosition && nextPosition) return true;else if ((currentPosition && currentPosition.x) !== (nextPosition && nextPosition.x)) return true;else if ((currentPosition && currentPosition.y) !== (nextPosition && nextPosition.y)) return true;
	  return false;
	};

	/*:: type DraggableState = {
	  dragging: boolean,
	  dragged: boolean,
	  x: number, y: number,
	  slackX: number, slackY: number,
	  isElementSVG: boolean
	};*/


	//
	// Define <Draggable>
	//

	/*:: export type DraggableProps = {
	  ...$Exact<DraggableCoreProps>,
	  axis: 'both' | 'x' | 'y' | 'none',
	  bounds: DraggableBounds | string | false,
	  defaultClassName: string,
	  defaultClassNameDragging: string,
	  defaultClassNameDragged: string,
	  defaultPosition: ControlPosition,
	  position: ControlPosition,
	  scale: number
	};*/

	var Draggable = function (_React$Component) {
	  inherits(Draggable, _React$Component);

	  function Draggable(props /*: DraggableProps*/) {
	    classCallCheck(this, Draggable);

	    var _this = possibleConstructorReturn(this, (Draggable.__proto__ || Object.getPrototypeOf(Draggable)).call(this, props));

	    _this.onDragStart = function (e, coreData) {

	      // Short-circuit if user's callback killed it.
	      var shouldStart = _this.props.onStart(e, createDraggableData(_this, coreData));
	      // Kills start event on core as well, so move handlers are never bound.
	      if (shouldStart === false) return false;

	      _this.setState({ dragging: true, dragged: true });
	    };

	    _this.onDrag = function (e, coreData) {
	      if (!_this.state.dragging) return false;

	      var uiData = createDraggableData(_this, coreData);

	      var newState /*: $Shape<DraggableState>*/ = {
	        x: uiData.x,
	        y: uiData.y
	      };

	      // Keep within bounds.
	      if (_this.props.bounds) {
	        // Save original x and y.
	        var _x = newState.x,
	            _y = newState.y;

	        // Add slack to the values used to calculate bound position. This will ensure that if
	        // we start removing slack, the element won't react to it right away until it's been
	        // completely removed.

	        newState.x += _this.state.slackX;
	        newState.y += _this.state.slackY;

	        // Get bound position. This will ceil/floor the x and y within the boundaries.

	        var _getBoundPosition = getBoundPosition(_this, newState.x, newState.y, _this.props.bounds),
	            _getBoundPosition2 = slicedToArray(_getBoundPosition, 2),
	            newStateX = _getBoundPosition2[0],
	            newStateY = _getBoundPosition2[1];

	        newState.x = newStateX;
	        newState.y = newStateY;

	        // Recalculate slack by noting how much was shaved by the boundPosition handler.
	        newState.slackX = _this.state.slackX + (_x - newState.x);
	        newState.slackY = _this.state.slackY + (_y - newState.y);

	        // Update the event we fire to reflect what really happened after bounds took effect.
	        uiData.x = newState.x;
	        uiData.y = newState.y;
	        uiData.deltaX = newState.x - _this.state.x;
	        uiData.deltaY = newState.y - _this.state.y;
	      }

	      // Short-circuit if user's callback killed it.
	      var shouldUpdate = _this.props.onDrag(e, uiData);
	      if (shouldUpdate === false) return false;

	      _this.setState(newState);
	    };

	    _this.onDragStop = function (e, coreData) {
	      if (!_this.state.dragging) return false;

	      // Short-circuit if user's callback killed it.
	      var shouldStop = _this.props.onStop(e, createDraggableData(_this, coreData));
	      if (shouldStop === false) return false;

	      var newState /*: $Shape<DraggableState>*/ = {
	        dragging: false,
	        slackX: 0,
	        slackY: 0
	      };

	      // If this is a controlled component, the result of this operation will be to
	      // revert back to the old position. We expect a handler on `onDragStop`, at the least.
	      var controlled = Boolean(_this.props.position);
	      if (controlled) {
	        var _this$props$position = _this.props.position,
	            _x2 = _this$props$position.x,
	            _y2 = _this$props$position.y;

	        newState.x = _x2;
	        newState.y = _y2;
	      }

	      _this.setState(newState);
	    };

	    _this.state = {
	      // Whether or not we are currently dragging.
	      dragging: false,

	      // Whether or not we have been dragged before.
	      dragged: false,

	      // Current transform x and y.
	      x: props.position ? props.position.x : props.defaultPosition.x,
	      y: props.position ? props.position.y : props.defaultPosition.y,

	      // Used for compensating for out-of-bounds drags
	      slackX: 0, slackY: 0,

	      // Can only determine if SVG after mounting
	      isElementSVG: false
	    };

	    _this.boundsObserver = new BoundsObserver(_this);
	    return _this;
	  }

	  createClass(Draggable, [{
	    key: 'componentWillMount',
	    value: function componentWillMount() {
	      if (this.props.position && !(this.props.onDrag || this.props.onStop)) {
	        // eslint-disable-next-line
	        console.warn('A `position` was applied to this <Draggable>, without drag handlers. This will make this ' + 'component effectively undraggable. Please attach `onDrag` or `onStop` handlers so you can adjust the ' + '`position` of this element.');
	      }
	    }
	  }, {
	    key: 'componentDidMount',
	    value: function componentDidMount() {
	      // Check to see if the element passed is an instanceof SVGElement
	      if (typeof window.SVGElement !== 'undefined' && ReactDOM.findDOMNode(this) instanceof window.SVGElement) {
	        this.setState({ isElementSVG: true });
	      }
	    }
	  }, {
	    key: 'componentWillReceiveProps',
	    value: function componentWillReceiveProps(nextProps /*: Object*/) {

	      if (boundsChanged(this.props.bounds, nextProps.bounds)) {
	        // bounds changed
	        var _ref = nextProps.position || this.state,
	            _x3 = _ref.x,
	            _y3 = _ref.y;

	        var _getBoundPosition3 = getBoundPosition(this, _x3, _y3, nextProps.bounds),
	            _getBoundPosition4 = slicedToArray(_getBoundPosition3, 2),
	            newStateX = _getBoundPosition4[0],
	            newStateY = _getBoundPosition4[1];

	        if (_x3 !== newStateX || _y3 !== newStateY) {
	          this.setState({ x: newStateX, y: newStateY });
	        }
	      } else if (positionChanged(this.props.position, nextProps.position)) {
	        // position changed
	        this.setState({ x: nextProps.position.x, y: nextProps.position.y });
	      }
	    }
	  }, {
	    key: 'componentWillUnmount',
	    value: function componentWillUnmount() {
	      this.setState({ dragging: false }); // prevents invariant if unmounted while dragging
	      // cleanup if bounds observer is listening
	      if (this.boundsObserver.boundElement) this.boundsObserver.removeBoundElementListener();
	    }
	  }, {
	    key: 'render',
	    value: function render() /*: ReactElement<any>*/ {
	      var _classNames;

	      var style = {},
	          svgTransform = null;

	      // If this is controlled, we don't want to move it - unless it's dragging.
	      var controlled = Boolean(this.props.position);
	      var draggable = !controlled || this.state.dragging;

	      var position = this.props.position || this.props.defaultPosition;
	      var transformOpts = {
	        // Set left if horizontal drag is enabled
	        x: canDragX(this) && draggable ? this.state.x : position.x,

	        // Set top if vertical drag is enabled
	        y: canDragY(this) && draggable ? this.state.y : position.y
	      };

	      // If this element was SVG, we use the `transform` attribute.
	      if (this.state.isElementSVG) {
	        svgTransform = createSVGTransform(transformOpts);
	      } else {
	        // Add a CSS transform to move the element around. This allows us to move the element around
	        // without worrying about whether or not it is relatively or absolutely positioned.
	        // If the item you are dragging already has a transform set, wrap it in a <span> so <Draggable>
	        // has a clean slate.
	        style = createCSSTransform(transformOpts);
	      }

	      var _props = this.props,
	          defaultClassName = _props.defaultClassName,
	          defaultClassNameDragging = _props.defaultClassNameDragging,
	          defaultClassNameDragged = _props.defaultClassNameDragged;


	      var children = React.Children.only(this.props.children);

	      // Mark with class while dragging
	      var className = classnames(children.props.className || '', defaultClassName, (_classNames = {}, defineProperty(_classNames, defaultClassNameDragging, this.state.dragging), defineProperty(_classNames, defaultClassNameDragged, this.state.dragged), _classNames));

	      // Reuse the child provided
	      // This makes it flexible to use whatever element is wanted (div, ul, etc)
	      return React.createElement(
	        DraggableCore,
	        _extends({}, this.props, { onStart: this.onDragStart, onDrag: this.onDrag, onStop: this.onDragStop }),
	        React.cloneElement(children, {
	          className: className,
	          style: _extends({}, children.props.style, style),
	          transform: svgTransform
	        })
	      );
	    }
	  }]);
	  return Draggable;
	}(React.Component);

	Draggable.displayName = 'Draggable';
	Draggable.propTypes = _extends({}, DraggableCore.propTypes, {

	  /**
	   * `axis` determines which axis the draggable can move.
	   *
	   *  Note that all callbacks will still return data as normal. This only
	   *  controls flushing to the DOM.
	   *
	   * 'both' allows movement horizontally and vertically.
	   * 'x' limits movement to horizontal axis.
	   * 'y' limits movement to vertical axis.
	   * 'none' limits all movement.
	   *
	   * Defaults to 'both'.
	   */
	  axis: propTypes.oneOf(['both', 'x', 'y', 'none']),

	  /**
	   * `bounds` determines the range of movement available to the element.
	   * Available values are:
	   *
	   * 'parent' restricts movement within the Draggable's parent node.
	   *
	   * Alternatively, pass an object with the following properties, all of which are optional:
	   *
	   * {left: LEFT_BOUND, right: RIGHT_BOUND, bottom: BOTTOM_BOUND, top: TOP_BOUND}
	   *
	   * All values are in px.
	   *
	   * Example:
	   *
	   * ```jsx
	   *   let App = React.createClass({
	   *       render: function () {
	   *         return (
	   *            <Draggable bounds={{right: 300, bottom: 300}}>
	   *              <div>Content</div>
	   *           </Draggable>
	   *         );
	   *       }
	   *   });
	   * ```
	   */
	  bounds: propTypes.oneOfType([propTypes.shape({
	    left: propTypes.number,
	    right: propTypes.number,
	    top: propTypes.number,
	    bottom: propTypes.number
	  }), propTypes.string, propTypes.oneOf([false])]),

	  defaultClassName: propTypes.string,
	  defaultClassNameDragging: propTypes.string,
	  defaultClassNameDragged: propTypes.string,

	  /**
	   * `defaultPosition` specifies the x and y that the dragged item should start at
	   *
	   * Example:
	   *
	   * ```jsx
	   *      let App = React.createClass({
	   *          render: function () {
	   *              return (
	   *                  <Draggable defaultPosition={{x: 25, y: 25}}>
	   *                      <div>I start with transformX: 25px and transformY: 25px;</div>
	   *                  </Draggable>
	   *              );
	   *          }
	   *      });
	   * ```
	   */
	  defaultPosition: propTypes.shape({
	    x: propTypes.number,
	    y: propTypes.number
	  }),

	  /**
	   * `position`, if present, defines the current position of the element.
	   *
	   *  This is similar to how form elements in React work - if no `position` is supplied, the component
	   *  is uncontrolled.
	   *
	   * Example:
	   *
	   * ```jsx
	   *      let App = React.createClass({
	   *          render: function () {
	   *              return (
	   *                  <Draggable position={{x: 25, y: 25}}>
	   *                      <div>I start with transformX: 25px and transformY: 25px;</div>
	   *                  </Draggable>
	   *              );
	   *          }
	   *      });
	   * ```
	   */
	  position: propTypes.shape({
	    x: propTypes.number,
	    y: propTypes.number
	  }),

	  /**
	   * These properties should be defined on the child, not here.
	   */
	  className: dontSetMe,
	  style: dontSetMe,
	  transform: dontSetMe
	});
	Draggable.defaultProps = _extends({}, DraggableCore.defaultProps, {
	  axis: 'both',
	  bounds: false,
	  defaultClassName: 'react-draggable',
	  defaultClassNameDragging: 'react-draggable-dragging',
	  defaultClassNameDragged: 'react-draggable-dragged',
	  defaultPosition: { x: 0, y: 0 },
	  position: null,
	  scale: 1
	});

	// Previous versions of this lib exported <Draggable> as the root export. As to not break
	// them, or TypeScript, we export *both* as the root and as 'default'.
	// See https://github.com/mzabriskie/react-draggable/pull/254
	// and https://github.com/mzabriskie/react-draggable/issues/266
	Draggable.default = Draggable;
	Draggable.DraggableCore = DraggableCore;

	return Draggable;

})));
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