webapp.pc/core.js

基于Vue的框架Webapp框架核心,控制应用架构

;(function(global){

//
// Check for native Promise and it has correct interface
//

var NativePromise = global['Promise'];
var nativePromiseSupported =
  NativePromise &&
  // Some of these methods are missing from
  // Firefox/Chrome experimental implementations
  'resolve' in NativePromise &&
  'reject' in NativePromise &&
  'all' in NativePromise &&
  'race' in NativePromise &&
  // Older version of the spec had a resolver object
  // as the arg rather than a function
  (function(){
    var resolve;
    new NativePromise(function(r){ resolve = r; });
    return typeof resolve === 'function';
  })();


//
// export if necessary
//

if (typeof exports !== 'undefined' && exports)
{
  // node.js
  exports.Promise = nativePromiseSupported ? NativePromise : Promise;
  exports.Polyfill = Promise;
}
else
{
  // AMD
  if (typeof define == 'function' && define.amd)
  {
    define(function(){
      return nativePromiseSupported ? NativePromise : Promise;
    });
  }
  else
  {
    // in browser add to global
    if (!nativePromiseSupported)
      global['Promise'] = Promise;
  }
}


//
// Polyfill
//

var PENDING = 'pending';
var SEALED = 'sealed';
var FULFILLED = 'fulfilled';
var REJECTED = 'rejected';
var NOOP = function(){};

function isArray(value) {
  return Object.prototype.toString.call(value) === '[object Array]';
}

// async calls
var asyncSetTimer = typeof setImmediate !== 'undefined' ? setImmediate : setTimeout;
var asyncQueue = [];
var asyncTimer;

function asyncFlush(){
  // run promise callbacks
  for (var i = 0; i < asyncQueue.length; i++)
    asyncQueue[i][0](asyncQueue[i][1]);

  // reset async asyncQueue
  asyncQueue = [];
  asyncTimer = false;
}

function asyncCall(callback, arg){
  asyncQueue.push([callback, arg]);

  if (!asyncTimer)
  {
    asyncTimer = true;
    asyncSetTimer(asyncFlush, 0);
  }
}


function invokeResolver(resolver, promise) {
  function resolvePromise(value) {
    resolve(promise, value);
  }

  function rejectPromise(reason) {
    reject(promise, reason);
  }

  try {
    resolver(resolvePromise, rejectPromise);
  } catch(e) {
    rejectPromise(e);
  }
}

function invokeCallback(subscriber){
  var owner = subscriber.owner;
  var settled = owner.state_;
  var value = owner.data_;  
  var callback = subscriber[settled];
  var promise = subscriber.then;

  if (typeof callback === 'function')
  {
    settled = FULFILLED;
    try {
      value = callback(value);
    } catch(e) {
      reject(promise, e);
    }
  }

  if (!handleThenable(promise, value))
  {
    if (settled === FULFILLED)
      resolve(promise, value);

    if (settled === REJECTED)
      reject(promise, value);
  }
}

function handleThenable(promise, value) {
  var resolved;

  try {
    if (promise === value)
      throw new TypeError('A promises callback cannot return that same promise.');

    if (value && (typeof value === 'function' || typeof value === 'object'))
    {
      var then = value.then;  // then should be retrived only once

      if (typeof then === 'function')
      {
        then.call(value, function(val){
          if (!resolved)
          {
            resolved = true;

            if (value !== val)
              resolve(promise, val);
            else
              fulfill(promise, val);
          }
        }, function(reason){
          if (!resolved)
          {
            resolved = true;

            reject(promise, reason);
          }
        });

        return true;
      }
    }
  } catch (e) {
    if (!resolved)
      reject(promise, e);

    return true;
  }

  return false;
}

function resolve(promise, value){
  if (promise === value || !handleThenable(promise, value))
    fulfill(promise, value);
}

function fulfill(promise, value){
  if (promise.state_ === PENDING)
  {
    promise.state_ = SEALED;
    promise.data_ = value;

    asyncCall(publishFulfillment, promise);
  }
}

function reject(promise, reason){
  if (promise.state_ === PENDING)
  {
    promise.state_ = SEALED;
    promise.data_ = reason;

    asyncCall(publishRejection, promise);
  }
}

function publish(promise) {
  var callbacks = promise.then_;
  promise.then_ = undefined;

  for (var i = 0; i < callbacks.length; i++) {
    invokeCallback(callbacks[i]);
  }
}

function publishFulfillment(promise){
  promise.state_ = FULFILLED;
  publish(promise);
}

function publishRejection(promise){
  promise.state_ = REJECTED;
  publish(promise);
}

/**
* @class
*/
function Promise(resolver){
  if (typeof resolver !== 'function')
    throw new TypeError('Promise constructor takes a function argument');

  if (this instanceof Promise === false)
    throw new TypeError('Failed to construct \'Promise\': Please use the \'new\' operator, this object constructor cannot be called as a function.');

  this.then_ = [];

  invokeResolver(resolver, this);
}

Promise.prototype = {
  constructor: Promise,

  state_: PENDING,
  then_: null,
  data_: undefined,

  then: function(onFulfillment, onRejection){
    var subscriber = {
      owner: this,
      then: new this.constructor(NOOP),
      fulfilled: onFulfillment,
      rejected: onRejection
    };

    if (this.state_ === FULFILLED || this.state_ === REJECTED)
    {
      // already resolved, call callback async
      asyncCall(invokeCallback, subscriber);
    }
    else
    {
      // subscribe
      this.then_.push(subscriber);
    }

    return subscriber.then;
  },

  'catch': function(onRejection) {
    return this.then(null, onRejection);
  }
};

Promise.all = function(promises){
  var Class = this;

  if (!isArray(promises))
    throw new TypeError('You must pass an array to Promise.all().');

  return new Class(function(resolve, reject){
    var results = [];
    var remaining = 0;

    function resolver(index){
      remaining++;
      return function(value){
        results[index] = value;
        if (!--remaining)
          resolve(results);
      };
    }

    for (var i = 0, promise; i < promises.length; i++)
    {
      promise = promises[i];

      if (promise && typeof promise.then === 'function')
        promise.then(resolver(i), reject);
      else
        results[i] = promise;
    }

    if (!remaining)
      resolve(results);
  });
};

Promise.race = function(promises){
  var Class = this;

  if (!isArray(promises))
    throw new TypeError('You must pass an array to Promise.race().');

  return new Class(function(resolve, reject) {
    for (var i = 0, promise; i < promises.length; i++)
    {
      promise = promises[i];

      if (promise && typeof promise.then === 'function')
        promise.then(resolve, reject);
      else
        resolve(promise);
    }
  });
};

Promise.resolve = function(value){
  var Class = this;

  if (value && typeof value === 'object' && value.constructor === Class)
    return value;

  return new Class(function(resolve){
    resolve(value);
  });
};

Promise.reject = function(reason){
  var Class = this;

  return new Class(function(resolve, reject){
    reject(reason);
  });
};

})(typeof window != 'undefined' ? window : typeof global != 'undefined' ? global : typeof self != 'undefined' ? self : this);

;/**
 * file: mod.js
 * ver: 1.0.10
 * update: 2015/04/16
 * //修改:PS    日期：2016-08-30
 * //新增基于Fis3 调试模式兼容
 * https://github.com/fex-team/mod
 */
var require, define;

(function (global) {
  var head = document.getElementsByTagName('head')[0],
    loadingMap = {},
    factoryMap = {},
    modulesMap = {},
    scriptsMap = {},
    resMap = {},
    pkgMap = {};

  function createScript(url, onerror) {
    if (url in scriptsMap) return;
    scriptsMap[url] = true;

    var script = document.createElement('script');
    if (onerror) {
      var tid = setTimeout(onerror, require.timeout);

      script.onerror = function () {
        clearTimeout(tid);
        onerror();
      };

      function onload() {
        clearTimeout(tid);
      }

      if ('onload' in script) {
        script.onload = onload;
      } else {
        script.onreadystatechange = function () {
          if (this.readyState == 'loaded' || this.readyState == 'complete') {
            onload();
          }
        }
      }
    }
    script.type = 'text/javascript';
    script.src = url;
    head.appendChild(script);
    return script;
  }

  function loadScript(id, callback, onerror) {
    var queue = loadingMap[id] || (loadingMap[id] = []);
    queue.push(callback);

    //
    // resource map query
    //
    var res = resMap[id] || resMap[id + '.js'] || {};
    var pkg = res.pkg;
    var url;

    if (pkg) {
      url = pkgMap[pkg].url;
    } else {
      url = res.url || id;
    }

    createScript(url, onerror && function () {
      onerror(id);
    });
  }

  define = function (id, factory) {
    id = id.replace(/\.js$/i, '');
    factoryMap[id] = factory;

    var queue = loadingMap[id];
    if (queue) {
      for (var i = 0, n = queue.length; i < n; i++) {
        queue[i]();
      }
      delete loadingMap[id];
    }
  };

  require = function (id) {
    // compatible with require([dep, dep2...]) syntax.
    if (id && id.splice) {
      return require.async.apply(this, arguments);
    }
    id = require.alias(id);
    var mod = modulesMap[id];
    if (mod) {
      return mod.exports;
    }

    //
    // init module
    //
    var factory = factoryMap[id];
    if (!factory) {
      throw '[ModJS] Cannot find module `' + id + '`';
    }

    mod = modulesMap[id] = {
      exports: {}
    };

    //
    // factory: function OR value
    //
    var ret = (typeof factory == 'function') ? factory.apply(mod, [require, mod.exports, mod]) : factory;

    if (ret) {
      mod.exports = ret;
    }
    return mod.exports;
  };

  require.async = function (names, onload, onerror) {
    if (typeof names == 'string') {
      names = [names];
    }

    var needMap = {};
    var needNum = 0;

    function findNeed(depArr) {
      for (var i = 0, n = depArr.length; i < n; i++) {
        //
        // skip loading or loaded
        //
        var dep = require.alias(depArr[i]);

        if (dep in factoryMap) {
          // check whether loaded resource's deps is loaded or not
          var child = resMap[dep] || resMap[dep + '.js'];
          if (child && 'deps' in child) {
            findNeed(child.deps);
          }
          continue;
        }

        if (dep in needMap) {
          continue;
        }

        needMap[dep] = true;
        needNum++;
        loadScript(dep, updateNeed, onerror);

        var child = resMap[dep] || resMap[dep + '.js'];
        if (child && 'deps' in child) {
          findNeed(child.deps);
        }
      }
    }

    function updateNeed() {
      if (0 == needNum--) {
        var args = [];
        for (var i = 0, n = names.length; i < n; i++) {
          args[i] = require(names[i]);
        }

        onload && onload.apply(global, args);
      }
    }

    findNeed(names);
    updateNeed();
  };
  
  /**
   * 作者：PS    
   * 日期：2016-08-30
   * @param {Object} obj 默认资源映射表
   */
  function dealCompatibleModjs(obj){
  	var newRes={};
  	var col = obj.res;
  	for (k in col) {
  		//modjs适用的映射数据格式 则不做任何处理
		if(k.indexOf(".")<0){
			return obj;
		}
	  	if (col.hasOwnProperty(k)) {
	  		//处理依赖中的.js后缀
	  		var newDeps=null;
	  		if (col[k].hasOwnProperty("deps")) {
	  			var deps = col[k].deps;
	  			newDeps=[];
	  			for (var i=0,len=deps.length;i<len;i++) {
					newDeps.push(require.alias(deps[i]));
				}
	  			col[k].deps=newDeps;
	  		}
	  		col[k].url=col[k].uri;
	  		delete col[k].uri;
	  		newRes[require.alias(k)]=col[k];
	  	}
  	}
  	col=obj.pkg;
  	for (k in col) {
  		col[k].url=col[k].uri;
  		delete col[k].uri;
  	}
  	obj.res = newRes;
  	return obj;
  }

  require.resourceMap = function (obj) {
    var k, col;
	
	//开发时 不进行完全编译 提升编译性能
	//obj=dealCompatibleModjs(obj);
	
    // merge `res` & `pkg` fields
    col = obj.res;
    for (k in col) {
      if (col.hasOwnProperty(k)) {
        resMap[k] = col[k];
      }
    }

    col = obj.pkg;
    for (k in col) {
      if (col.hasOwnProperty(k)) {
        pkgMap[k] = col[k];
      }
    }
  };

  require.loadJs = function (url) {
    createScript(url);
  };

  require.loadCss = function (cfg) {
    if (cfg.content) {
      var sty = document.createElement('style');
      sty.type = 'text/css';

      if (sty.styleSheet) { // IE
        sty.styleSheet.cssText = cfg.content;
      } else {
        sty.innerHTML = cfg.content;
      }
      head.appendChild(sty);
    } else if (cfg.url) {
      var link = document.createElement('link');
      link.href = cfg.url;
      link.rel = 'stylesheet';
      link.type = 'text/css';
      head.appendChild(link);
    }
  };


  require.alias = function (id) {
  	//作者：PS    日期：2016-08-30
  	//适配 / 起点开始表示的模块
	// if (id.indexOf("/")==0) {
	// 	id=id.substr(1,id.length-1);
	// }
	
    return id.replace(/\.js$/i, '');
  };

  require.timeout = 5000;

})(this);
;/*!
 * Vue.js v2.5.1
 * (c) 2014-2017 Evan You
 * Released under the MIT License.
 */
(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
	typeof define === 'function' && define.amd ? define(factory) :
	(global.Vue = factory());
}(this, (function () { 'use strict';

/*  */

// these helpers produces better vm code in JS engines due to their
// explicitness and function inlining
function isUndef (v) {
  return v === undefined || v === null
}

function isDef (v) {
  return v !== undefined && v !== null
}

function isTrue (v) {
  return v === true
}

function isFalse (v) {
  return v === false
}

/**
 * Check if value is primitive
 */
function isPrimitive (value) {
  return (
    typeof value === 'string' ||
    typeof value === 'number' ||
    typeof value === 'boolean'
  )
}

/**
 * Quick object check - this is primarily used to tell
 * Objects from primitive values when we know the value
 * is a JSON-compliant type.
 */
function isObject (obj) {
  return obj !== null && typeof obj === 'object'
}

/**
 * Get the raw type string of a value e.g. [object Object]
 */
var _toString = Object.prototype.toString;

function toRawType (value) {
  return _toString.call(value).slice(8, -1)
}

/**
 * Strict object type check. Only returns true
 * for plain JavaScript objects.
 */
function isPlainObject (obj) {
  return _toString.call(obj) === '[object Object]'
}

function isRegExp (v) {
  return _toString.call(v) === '[object RegExp]'
}

/**
 * Check if val is a valid array index.
 */
function isValidArrayIndex (val) {
  var n = parseFloat(String(val));
  return n >= 0 && Math.floor(n) === n && isFinite(val)
}

/**
 * Convert a value to a string that is actually rendered.
 */
function toString (val) {
  return val == null
    ? ''
    : typeof val === 'object'
      ? JSON.stringify(val, null, 2)
      : String(val)
}

/**
 * Convert a input value to a number for persistence.
 * If the conversion fails, return original string.
 */
function toNumber (val) {
  var n = parseFloat(val);
  return isNaN(n) ? val : n
}

/**
 * Make a map and return a function for checking if a key
 * is in that map.
 */
function makeMap (
  str,
  expectsLowerCase
) {
  var map = Object.create(null);
  var list = str.split(',');
  for (var i = 0; i < list.length; i++) {
    map[list[i]] = true;
  }
  return expectsLowerCase
    ? function (val) { return map[val.toLowerCase()]; }
    : function (val) { return map[val]; }
}

/**
 * Check if a tag is a built-in tag.
 */
var isBuiltInTag = makeMap('slot,component', true);

/**
 * Check if a attribute is a reserved attribute.
 */
var isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');

/**
 * Remove an item from an array
 */
function remove (arr, item) {
  if (arr.length) {
    var index = arr.indexOf(item);
    if (index > -1) {
      return arr.splice(index, 1)
    }
  }
}

/**
 * Check whether the object has the property.
 */
var hasOwnProperty = Object.prototype.hasOwnProperty;
function hasOwn (obj, key) {
  return hasOwnProperty.call(obj, key)
}

/**
 * Create a cached version of a pure function.
 */
function cached (fn) {
  var cache = Object.create(null);
  return (function cachedFn (str) {
    var hit = cache[str];
    return hit || (cache[str] = fn(str))
  })
}

/**
 * Camelize a hyphen-delimited string.
 */
var camelizeRE = /-(\w)/g;
var camelize = cached(function (str) {
  return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; })
});

/**
 * Capitalize a string.
 */
var capitalize = cached(function (str) {
  return str.charAt(0).toUpperCase() + str.slice(1)
});

/**
 * Hyphenate a camelCase string.
 */
var hyphenateRE = /\B([A-Z])/g;
var hyphenate = cached(function (str) {
  return str.replace(hyphenateRE, '-$1').toLowerCase()
});

/**
 * Simple bind, faster than native
 */
function bind (fn, ctx) {
  function boundFn (a) {
    var l = arguments.length;
    return l
      ? l > 1
        ? fn.apply(ctx, arguments)
        : fn.call(ctx, a)
      : fn.call(ctx)
  }
  // record original fn length
  boundFn._length = fn.length;
  return boundFn
}

/**
 * Convert an Array-like object to a real Array.
 */
function toArray (list, start) {
  start = start || 0;
  var i = list.length - start;
  var ret = new Array(i);
  while (i--) {
    ret[i] = list[i + start];
  }
  return ret
}

/**
 * Mix properties into target object.
 */
function extend (to, _from) {
  for (var key in _from) {
    to[key] = _from[key];
  }
  return to
}

/**
 * Merge an Array of Objects into a single Object.
 */
function toObject (arr) {
  var res = {};
  for (var i = 0; i < arr.length; i++) {
    if (arr[i]) {
      extend(res, arr[i]);
    }
  }
  return res
}

/**
 * Perform no operation.
 * Stubbing args to make Flow happy without leaving useless transpiled code
 * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/)
 */
function noop (a, b, c) {}

/**
 * Always return false.
 */
var no = function (a, b, c) { return false; };

/**
 * Return same value
 */
var identity = function (_) { return _; };

/**
 * Generate a static keys string from compiler modules.
 */
function genStaticKeys (modules) {
  return modules.reduce(function (keys, m) {
    return keys.concat(m.staticKeys || [])
  }, []).join(',')
}

/**
 * Check if two values are loosely equal - that is,
 * if they are plain objects, do they have the same shape?
 */
function looseEqual (a, b) {
  if (a === b) { return true }
  var isObjectA = isObject(a);
  var isObjectB = isObject(b);
  if (isObjectA && isObjectB) {
    try {
      var isArrayA = Array.isArray(a);
      var isArrayB = Array.isArray(b);
      if (isArrayA && isArrayB) {
        return a.length === b.length && a.every(function (e, i) {
          return looseEqual(e, b[i])
        })
      } else if (!isArrayA && !isArrayB) {
        var keysA = Object.keys(a);
        var keysB = Object.keys(b);
        return keysA.length === keysB.length && keysA.every(function (key) {
          return looseEqual(a[key], b[key])
        })
      } else {
        /* istanbul ignore next */
        return false
      }
    } catch (e) {
      /* istanbul ignore next */
      return false
    }
  } else if (!isObjectA && !isObjectB) {
    return String(a) === String(b)
  } else {
    return false
  }
}

function looseIndexOf (arr, val) {
  for (var i = 0; i < arr.length; i++) {
    if (looseEqual(arr[i], val)) { return i }
  }
  return -1
}

/**
 * Ensure a function is called only once.
 */
function once (fn) {
  var called = false;
  return function () {
    if (!called) {
      called = true;
      fn.apply(this, arguments);
    }
  }
}

var SSR_ATTR = 'data-server-rendered';

var ASSET_TYPES = [
  'component',
  'directive',
  'filter'
];

var LIFECYCLE_HOOKS = [
  'beforeCreate',
  'created',
  'beforeMount',
  'mounted',
  'beforeUpdate',
  'updated',
  'beforeDestroy',
  'destroyed',
  'activated',
  'deactivated',
  'errorCaptured'
];

/*  */

var config = ({
  /**
   * Option merge strategies (used in core/util/options)
   */
  optionMergeStrategies: Object.create(null),

  /**
   * Whether to suppress warnings.
   */
  silent: false,

  /**
   * Show production mode tip message on boot?
   */
  productionTip: "development" !== 'production',

  /**
   * Whether to enable devtools
   */
  devtools: "development" !== 'production',

  /**
   * Whether to record perf
   */
  performance: false,

  /**
   * Error handler for watcher errors
   */
  errorHandler: null,

  /**
   * Warn handler for watcher warns
   */
  warnHandler: null,

  /**
   * Ignore certain custom elements
   */
  ignoredElements: [],

  /**
   * Custom user key aliases for v-on
   */
  keyCodes: Object.create(null),

  /**
   * Check if a tag is reserved so that it cannot be registered as a
   * component. This is platform-dependent and may be overwritten.
   */
  isReservedTag: no,

  /**
   * Check if an attribute is reserved so that it cannot be used as a component
   * prop. This is platform-dependent and may be overwritten.
   */
  isReservedAttr: no,

  /**
   * Check if a tag is an unknown element.
   * Platform-dependent.
   */
  isUnknownElement: no,

  /**
   * Get the namespace of an element
   */
  getTagNamespace: noop,

  /**
   * Parse the real tag name for the specific platform.
   */
  parsePlatformTagName: identity,

  /**
   * Check if an attribute must be bound using property, e.g. value
   * Platform-dependent.
   */
  mustUseProp: no,

  /**
   * Exposed for legacy reasons
   */
  _lifecycleHooks: LIFECYCLE_HOOKS
});

/*  */

var emptyObject = Object.freeze({});

/**
 * Check if a string starts with $ or _
 */
function isReserved (str) {
  var c = (str + '').charCodeAt(0);
  return c === 0x24 || c === 0x5F
}

/**
 * Define a property.
 */
function def (obj, key, val, enumerable) {
  Object.defineProperty(obj, key, {
    value: val,
    enumerable: !!enumerable,
    writable: true,
    configurable: true
  });
}

/**
 * Parse simple path.
 */
var bailRE = /[^\w.$]/;
function parsePath (path) {
  if (bailRE.test(path)) {
    return
  }
  var segments = path.split('.');
  return function (obj) {
    for (var i = 0; i < segments.length; i++) {
      if (!obj) { return }
      obj = obj[segments[i]];
    }
    return obj
  }
}

/*  */

var warn = noop;
var tip = noop;
var generateComponentTrace = (noop); // work around flow check
var formatComponentName = (noop);

{
  var hasConsole = typeof console !== 'undefined';
  var classifyRE = /(?:^|[-_])(\w)/g;
  var classify = function (str) { return str
    .replace(classifyRE, function (c) { return c.toUpperCase(); })
    .replace(/[-_]/g, ''); };

  warn = function (msg, vm) {
    var trace = vm ? generateComponentTrace(vm) : '';

    if (config.warnHandler) {
      config.warnHandler.call(null, msg, vm, trace);
    } else if (hasConsole && (!config.silent)) {
      console.error(("[Vue warn]: " + msg + trace));
    }
  };

  tip = function (msg, vm) {
    if (hasConsole && (!config.silent)) {
      console.warn("[Vue tip]: " + msg + (
        vm ? generateComponentTrace(vm) : ''
      ));
    }
  };

  formatComponentName = function (vm, includeFile) {
    if (vm.$root === vm) {
      return '<Root>'
    }
    var options = typeof vm === 'function' && vm.cid != null
      ? vm.options
      : vm._isVue
        ? vm.$options || vm.constructor.options
        : vm || {};
    var name = options.name || options._componentTag;
    var file = options.__file;
    if (!name && file) {
      var match = file.match(/([^/\\]+)\.vue$/);
      name = match && match[1];
    }

    return (
      (name ? ("<" + (classify(name)) + ">") : "<Anonymous>") +
      (file && includeFile !== false ? (" at " + file) : '')
    )
  };

  var repeat = function (str, n) {
    var res = '';
    while (n) {
      if (n % 2 === 1) { res += str; }
      if (n > 1) { str += str; }
      n >>= 1;
    }
    return res
  };

  generateComponentTrace = function (vm) {
    if (vm._isVue && vm.$parent) {
      var tree = [];
      var currentRecursiveSequence = 0;
      while (vm) {
        if (tree.length > 0) {
          var last = tree[tree.length - 1];
          if (last.constructor === vm.constructor) {
            currentRecursiveSequence++;
            vm = vm.$parent;
            continue
          } else if (currentRecursiveSequence > 0) {
            tree[tree.length - 1] = [last, currentRecursiveSequence];
            currentRecursiveSequence = 0;
          }
        }
        tree.push(vm);
        vm = vm.$parent;
      }
      return '\n\nfound in\n\n' + tree
        .map(function (vm, i) { return ("" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm)
            ? ((formatComponentName(vm[0])) + "... (" + (vm[1]) + " recursive calls)")
            : formatComponentName(vm))); })
        .join('\n')
    } else {
      return ("\n\n(found in " + (formatComponentName(vm)) + ")")
    }
  };
}

/*  */

function handleError (err, vm, info) {
  if (vm) {
    var cur = vm;
    while ((cur = cur.$parent)) {
      var hooks = cur.$options.errorCaptured;
      if (hooks) {
        for (var i = 0; i < hooks.length; i++) {
          try {
            var capture = hooks[i].call(cur, err, vm, info) === false;
            if (capture) { return }
          } catch (e) {
            globalHandleError(e, cur, 'errorCaptured hook');
          }
        }
      }
    }
  }
  globalHandleError(err, vm, info);
}

function globalHandleError (err, vm, info) {
  if (config.errorHandler) {
    try {
      return config.errorHandler.call(null, err, vm, info)
    } catch (e) {
      logError(e, null, 'config.errorHandler');
    }
  }
  logError(err, vm, info);
}

function logError (err, vm, info) {
  {
    warn(("Error in " + info + ": \"" + (err.toString()) + "\""), vm);
  }
  /* istanbul ignore else */
  if (inBrowser && typeof console !== 'undefined') {
    console.error(err);
  } else {
    throw err
  }
}

/*  */
/* globals MessageChannel */

// can we use __proto__?
var hasProto = '__proto__' in {};

// Browser environment sniffing
var inBrowser = typeof window !== 'undefined';
var UA = inBrowser && window.navigator.userAgent.toLowerCase();
var isIE = UA && /msie|trident/.test(UA);
var isIE9 = UA && UA.indexOf('msie 9.0') > 0;
var isEdge = UA && UA.indexOf('edge/') > 0;
var isAndroid = UA && UA.indexOf('android') > 0;
var isIOS = UA && /iphone|ipad|ipod|ios/.test(UA);
var isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge;

// Firefox has a "watch" function on Object.prototype...
var nativeWatch = ({}).watch;

var supportsPassive = false;
if (inBrowser) {
  try {
    var opts = {};
    Object.defineProperty(opts, 'passive', ({
      get: function get () {
        /* istanbul ignore next */
        supportsPassive = true;
      }
    })); // https://github.com/facebook/flow/issues/285
    window.addEventListener('test-passive', null, opts);
  } catch (e) {}
}

// this needs to be lazy-evaled because vue may be required before
// vue-server-renderer can set VUE_ENV
var _isServer;
var isServerRendering = function () {
  if (_isServer === undefined) {
    /* istanbul ignore if */
    if (!inBrowser && typeof global !== 'undefined') {
      // detect presence of vue-server-renderer and avoid
      // Webpack shimming the process
      _isServer = global['process'].env.VUE_ENV === 'server';
    } else {
      _isServer = false;
    }
  }
  return _isServer
};

// detect devtools
var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;

/* istanbul ignore next */
function isNative (Ctor) {
  return typeof Ctor === 'function' && /native code/.test(Ctor.toString())
}

var hasSymbol =
  typeof Symbol !== 'undefined' && isNative(Symbol) &&
  typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);

/**
 * Defer a task to execute it asynchronously.
 */
var nextTick = (function () {
  var callbacks = [];
  var pending = false;
  var timerFunc;

  function nextTickHandler () {
    pending = false;
    var copies = callbacks.slice(0);
    callbacks.length = 0;
    for (var i = 0; i < copies.length; i++) {
      copies[i]();
    }
  }

  // An asynchronous deferring mechanism.
  // In pre 2.4, we used to use microtasks (Promise/MutationObserver)
  // but microtasks actually has too high a priority and fires in between
  // supposedly sequential events (e.g. #4521, #6690) or even between
  // bubbling of the same event (#6566). Technically setImmediate should be
  // the ideal choice, but it's not available everywhere; and the only polyfill
  // that consistently queues the callback after all DOM events triggered in the
  // same loop is by using MessageChannel.
  /* istanbul ignore if */
  if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {
    timerFunc = function () {
      setImmediate(nextTickHandler);
    };
  } else if (typeof MessageChannel !== 'undefined' && (
    isNative(MessageChannel) ||
    // PhantomJS
    MessageChannel.toString() === '[object MessageChannelConstructor]'
  )) {
    var channel = new MessageChannel();
    var port = channel.port2;
    channel.port1.onmessage = nextTickHandler;
    timerFunc = function () {
      port.postMessage(1);
    };
  } else
  /* istanbul ignore next */
  if (typeof Promise !== 'undefined' && isNative(Promise)) {
    // use microtask in non-DOM environments, e.g. Weex
    var p = Promise.resolve();
    timerFunc = function () {
      p.then(nextTickHandler);
    };
  } else {
    // fallback to setTimeout
    timerFunc = function () {
      setTimeout(nextTickHandler, 0);
    };
  }

  return function queueNextTick (cb, ctx) {
    var _resolve;
    callbacks.push(function () {
      if (cb) {
        try {
          cb.call(ctx);
        } catch (e) {
          handleError(e, ctx, 'nextTick');
        }
      } else if (_resolve) {
        _resolve(ctx);
      }
    });
    if (!pending) {
      pending = true;
      timerFunc();
    }
    // $flow-disable-line
    if (!cb && typeof Promise !== 'undefined') {
      return new Promise(function (resolve, reject) {
        _resolve = resolve;
      })
    }
  }
})();

var _Set;
/* istanbul ignore if */ // $flow-disable-line
if (typeof Set !== 'undefined' && isNative(Set)) {
  // use native Set when available.
  _Set = Set;
} else {
  // a non-standard Set polyfill that only works with primitive keys.
  _Set = (function () {
    function Set () {
      this.set = Object.create(null);
    }
    Set.prototype.has = function has (key) {
      return this.set[key] === true
    };
    Set.prototype.add = function add (key) {
      this.set[key] = true;
    };
    Set.prototype.clear = function clear () {
      this.set = Object.create(null);
    };

    return Set;
  }());
}

/*  */


var uid = 0;

/**
 * A dep is an observable that can have multiple
 * directives subscribing to it.
 */
var Dep = function Dep () {
  this.id = uid++;
  this.subs = [];
};

Dep.prototype.addSub = function addSub (sub) {
  this.subs.push(sub);
};

Dep.prototype.removeSub = function removeSub (sub) {
  remove(this.subs, sub);
};

Dep.prototype.depend = function depend () {
  if (Dep.target) {
    Dep.target.addDep(this);
  }
};

Dep.prototype.notify = function notify () {
  // stabilize the subscriber list first
  var subs = this.subs.slice();
  for (var i = 0, l = subs.length; i < l; i++) {
    subs[i].update();
  }
};

// the current target watcher being evaluated.
// this is globally unique because there could be only one
// watcher being evaluated at any time.
Dep.target = null;
var targetStack = [];

function pushTarget (_target) {
  if (Dep.target) { targetStack.push(Dep.target); }
  Dep.target = _target;
}

function popTarget () {
  Dep.target = targetStack.pop();
}

/*  */

var VNode = function VNode (
  tag,
  data,
  children,
  text,
  elm,
  context,
  componentOptions,
  asyncFactory
) {
  this.tag = tag;
  this.data = data;
  this.children = children;
  this.text = text;
  this.elm = elm;
  this.ns = undefined;
  this.context = context;
  this.functionalContext = undefined;
  this.functionalOptions = undefined;
  this.functionalScopeId = undefined;
  this.key = data && data.key;
  this.componentOptions = componentOptions;
  this.componentInstance = undefined;
  this.parent = undefined;
  this.raw = false;
  this.isStatic = false;
  this.isRootInsert = true;
  this.isComment = false;
  this.isCloned = false;
  this.isOnce = false;
  this.asyncFactory = asyncFactory;
  this.asyncMeta = undefined;
  this.isAsyncPlaceholder = false;
};

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

// DEPRECATED: alias for componentInstance for backwards compat.
/* istanbul ignore next */
prototypeAccessors.child.get = function () {
  return this.componentInstance
};

Object.defineProperties( VNode.prototype, prototypeAccessors );

var createEmptyVNode = function (text) {
  if ( text === void 0 ) text = '';

  var node = new VNode();
  node.text = text;
  node.isComment = true;
  return node
};

function createTextVNode (val) {
  return new VNode(undefined, undefined, undefined, String(val))
}

// optimized shallow clone
// used for static nodes and slot nodes because they may be reused across
// multiple renders, cloning them avoids errors when DOM manipulations rely
// on their elm reference.
function cloneVNode (vnode, deep) {
  var cloned = new VNode(
    vnode.tag,
    vnode.data,
    vnode.children,
    vnode.text,
    vnode.elm,
    vnode.context,
    vnode.componentOptions,
    vnode.asyncFactory
  );
  cloned.ns = vnode.ns;
  cloned.isStatic = vnode.isStatic;
  cloned.key = vnode.key;
  cloned.isComment = vnode.isComment;
  cloned.isCloned = true;
  if (deep && vnode.children) {
    cloned.children = cloneVNodes(vnode.children);
  }
  return cloned
}

function cloneVNodes (vnodes, deep) {
  var len = vnodes.length;
  var res = new Array(len);
  for (var i = 0; i < len; i++) {
    res[i] = cloneVNode(vnodes[i], deep);
  }
  return res
}

/*
 * not type checking this file because flow doesn't play well with
 * dynamically accessing methods on Array prototype
 */

var arrayProto = Array.prototype;
var arrayMethods = Object.create(arrayProto);[
  'push',
  'pop',
  'shift',
  'unshift',
  'splice',
  'sort',
  'reverse'
]
.forEach(function (method) {
  // cache original method
  var original = arrayProto[method];
  def(arrayMethods, method, function mutator () {
    var args = [], len = arguments.length;
    while ( len-- ) args[ len ] = arguments[ len ];

    var result = original.apply(this, args);
    var ob = this.__ob__;
    var inserted;
    switch (method) {
      case 'push':
      case 'unshift':
        inserted = args;
        break
      case 'splice':
        inserted = args.slice(2);
        break
    }
    if (inserted) { ob.observeArray(inserted); }
    // notify change
    ob.dep.notify();
    return result
  });
});

/*  */

var arrayKeys = Object.getOwnPropertyNames(arrayMethods);

/**
 * By default, when a reactive property is set, the new value is
 * also converted to become reactive. However when passing down props,
 * we don't want to force conversion because the value may be a nested value
 * under a frozen data structure. Converting it would defeat the optimization.
 */
var observerState = {
  shouldConvert: true
};

/**
 * Observer class that are attached to each observed
 * object. Once attached, the observer converts target
 * object's property keys into getter/setters that
 * collect dependencies and dispatches updates.
 */
var Observer = function Observer (value) {
  this.value = value;
  this.dep = new Dep();
  this.vmCount = 0;
  def(value, '__ob__', this);
  if (Array.isArray(value)) {
    var augment = hasProto
      ? protoAugment
      : copyAugment;
    augment(value, arrayMethods, arrayKeys);
    this.observeArray(value);
  } else {
    this.walk(value);
  }
};

/**
 * Walk through each property and convert them into
 * getter/setters. This method should only be called when
 * value type is Object.
 */
Observer.prototype.walk = function walk (obj) {
  var keys = Object.keys(obj);
  for (var i = 0; i < keys.length; i++) {
    defineReactive(obj, keys[i], obj[keys[i]]);
  }
};

/**
 * Observe a list of Array items.
 */
Observer.prototype.observeArray = function observeArray (items) {
  for (var i = 0, l = items.length; i < l; i++) {
    observe(items[i]);
  }
};

// helpers

/**
 * Augment an target Object or Array by intercepting
 * the prototype chain using __proto__
 */
function protoAugment (target, src, keys) {
  /* eslint-disable no-proto */
  target.__proto__ = src;
  /* eslint-enable no-proto */
}

/**
 * Augment an target Object or Array by defining
 * hidden properties.
 */
/* istanbul ignore next */
function copyAugment (target, src, keys) {
  for (var i = 0, l = keys.length; i < l; i++) {
    var key = keys[i];
    def(target, key, src[key]);
  }
}

/**
 * Attempt to create an observer instance for a value,
 * returns the new observer if successfully observed,
 * or the existing observer if the value already has one.
 */
function observe (value, asRootData) {
  if (!isObject(value) || value instanceof VNode) {
    return
  }
  var ob;
  if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
    ob = value.__ob__;
  } else if (
    observerState.shouldConvert &&
    !isServerRendering() &&
    (Array.isArray(value) || isPlainObject(value)) &&
    Object.isExtensible(value) &&
    !value._isVue
  ) {
    ob = new Observer(value);
  }
  if (asRootData && ob) {
    ob.vmCount++;
  }
  return ob
}

/**
 * Define a reactive property on an Object.
 */
function defineReactive (
  obj,
  key,
  val,
  customSetter,
  shallow
) {
  var dep = new Dep();

  var property = Object.getOwnPropertyDescriptor(obj, key);
  if (property && property.configurable === false) {
    return
  }

  // cater for pre-defined getter/setters
  var getter = property && property.get;
  var setter = property && property.set;

  var childOb = !shallow && observe(val);
  Object.defineProperty(obj, key, {
    enumerable: true,
    configurable: true,
    get: function reactiveGetter () {
      var value = getter ? getter.call(obj) : val;
      if (Dep.target) {
        dep.depend();
        if (childOb) {
          childOb.dep.depend();
          if (Array.isArray(value)) {
            dependArray(value);
          }
        }
      }
      return value
    },
    set: function reactiveSetter (newVal) {
      var value = getter ? getter.call(obj) : val;
      /* eslint-disable no-self-compare */
      if (newVal === value || (newVal !== newVal && value !== value)) {
        return
      }
      /* eslint-enable no-self-compare */
      if ("development" !== 'production' && customSetter) {
        customSetter();
      }
      if (setter) {
        setter.call(obj, newVal);
      } else {
        val = newVal;
      }
      childOb = !shallow && observe(newVal);
      dep.notify();
    }
  });
}

/**
 * Set a property on an object. Adds the new property and
 * triggers change notification if the property doesn't
 * already exist.
 */
function set (target, key, val) {
  if (Array.isArray(target) && isValidArrayIndex(key)) {
    target.length = Math.max(target.length, key);
    target.splice(key, 1, val);
    return val
  }
  if (hasOwn(target, key)) {
    target[key] = val;
    return val
  }
  var ob = (target).__ob__;
  if (target._isVue || (ob && ob.vmCount)) {
    "development" !== 'production' && warn(
      'Avoid adding reactive properties to a Vue instance or its root $data ' +
      'at runtime - declare it upfront in the data option.'
    );
    return val
  }
  if (!ob) {
    target[key] = val;
    return val
  }
  defineReactive(ob.value, key, val);
  ob.dep.notify();
  return val
}

/**
 * Delete a property and trigger change if necessary.
 */
function del (target, key) {
  if (Array.isArray(target) && isValidArrayIndex(key)) {
    target.splice(key, 1);
    return
  }
  var ob = (target).__ob__;
  if (target._isVue || (ob && ob.vmCount)) {
    "development" !== 'production' && warn(
      'Avoid deleting properties on a Vue instance or its root $data ' +
      '- just set it to null.'
    );
    return
  }
  if (!hasOwn(target, key)) {
    return
  }
  delete target[key];
  if (!ob) {
    return
  }
  ob.dep.notify();
}

/**
 * Collect dependencies on array elements when the array is touched, since
 * we cannot intercept array element access like property getters.
 */
function dependArray (value) {
  for (var e = (void 0), i = 0, l = value.length; i < l; i++) {
    e = value[i];
    e && e.__ob__ && e.__ob__.dep.depend();
    if (Array.isArray(e)) {
      dependArray(e);
    }
  }
}

/*  */

/**
 * Option overwriting strategies are functions that handle
 * how to merge a parent option value and a child option
 * value into the final value.
 */
var strats = config.optionMergeStrategies;

/**
 * Options with restrictions
 */
{
  strats.el = strats.propsData = function (parent, child, vm, key) {
    if (!vm) {
      warn(
        "option \"" + key + "\" can only be used during instance " +
        'creation with the `new` keyword.'
      );
    }
    return defaultStrat(parent, child)
  };
}

/**
 * Helper that recursively merges two data objects together.
 */
function mergeData (to, from) {
  if (!from) { return to }
  var key, toVal, fromVal;
  var keys = Object.keys(from);
  for (var i = 0; i < keys.length; i++) {
    key = keys[i];
    toVal = to[key];
    fromVal = from[key];
    if (!hasOwn(to, key)) {
      set(to, key, fromVal);
    } else if (isPlainObject(toVal) && isPlainObject(fromVal)) {
      mergeData(toVal, fromVal);
    }
  }
  return to
}

/**
 * Data
 */
function mergeDataOrFn (
  parentVal,
  childVal,
  vm
) {
  if (!vm) {
    // in a Vue.extend merge, both should be functions
    if (!childVal) {
      return parentVal
    }
    if (!parentVal) {
      return childVal
    }
    // when parentVal & childVal are both present,
    // we need to return a function that returns the
    // merged result of both functions... no need to
    // check if parentVal is a function here because
    // it has to be a function to pass previous merges.
    return function mergedDataFn () {
      return mergeData(
        typeof childVal === 'function' ? childVal.call(this) : childVal,
        typeof parentVal === 'function' ? parentVal.call(this) : parentVal
      )
    }
  } else if (parentVal || childVal) {
    return function mergedInstanceDataFn () {
      // instance merge
      var instanceData = typeof childVal === 'function'
        ? childVal.call(vm)
        : childVal;
      var defaultData = typeof parentVal === 'function'
        ? parentVal.call(vm)
        : parentVal;
      if (instanceData) {
        return mergeData(instanceData, defaultData)
      } else {
        return defaultData
      }
    }
  }
}

strats.data = function (
  parentVal,
  childVal,
  vm
) {
  if (!vm) {
    if (childVal && typeof childVal !== 'function') {
      "development" !== 'production' && warn(
        'The "data" option should be a function ' +
        'that returns a per-instance value in component ' +
        'definitions.',
        vm
      );

      return parentVal
    }
    return mergeDataOrFn.call(this, parentVal, childVal)
  }

  return mergeDataOrFn(parentVal, childVal, vm)
};

/**
 * Hooks and props are merged as arrays.
 */
function mergeHook (
  parentVal,
  childVal
) {
  return childVal
    ? parentVal
      ? parentVal.concat(childVal)
      : Array.isArray(childVal)
        ? childVal
        : [childVal]
    : parentVal
}

LIFECYCLE_HOOKS.forEach(function (hook) {
  strats[hook] = mergeHook;
});

/**
 * Assets
 *
 * When a vm is present (instance creation), we need to do
 * a three-way merge between constructor options, instance
 * options and parent options.
 */
function mergeAssets (
  parentVal,
  childVal,
  vm,
  key
) {
  var res = Object.create(parentVal || null);
  if (childVal) {
    "development" !== 'production' && assertObjectType(key, childVal, vm);
    return extend(res, childVal)
  } else {
    return res
  }
}

ASSET_TYPES.forEach(function (type) {
  strats[type + 's'] = mergeAssets;
});

/**
 * Watchers.
 *
 * Watchers hashes should not overwrite one
 * another, so we merge them as arrays.
 */
strats.watch = function (
  parentVal,
  childVal,
  vm,
  key
) {
  // work around Firefox's Object.prototype.watch...
  if (parentVal === nativeWatch) { parentVal = undefined; }
  if (childVal === nativeWatch) { childVal = undefined; }
  /* istanbul ignore if */
  if (!childVal) { return Object.create(parentVal || null) }
  {
    assertObjectType(key, childVal, vm);
  }
  if (!parentVal) { return childVal }
  var ret = {};
  extend(ret, parentVal);
  for (var key$1 in childVal) {
    var parent = ret[key$1];
    var child = childVal[key$1];
    if (parent && !Array.isArray(parent)) {
      parent = [parent];
    }
    ret[key$1] = parent
      ? parent.concat(child)
      : Array.isArray(child) ? child : [child];
  }
  return ret
};

/**
 * Other object hashes.
 */
strats.props =
strats.methods =
strats.inject =
strats.computed = function (
  parentVal,
  childVal,
  vm,
  key
) {
  if (childVal && "development" !== 'production') {
    assertObjectType(key, childVal, vm);
  }
  if (!parentVal) { return childVal }
  var ret = Object.create(null);
  extend(ret, parentVal);
  if (childVal) { extend(ret, childVal); }
  return ret
};
strats.provide = mergeDataOrFn;

/**
 * Default strategy.
 */
var defaultStrat = function (parentVal, childVal) {
  return childVal === undefined
    ? parentVal
    : childVal
};

/**
 * Validate component names
 */
function checkComponents (options) {
  for (var key in options.components) {
    var lower = key.toLowerCase();
    if (isBuiltInTag(lower) || config.isReservedTag(lower)) {
      warn(
        'Do not use built-in or reserved HTML elements as component ' +
        'id: ' + key
      );
    }
  }
}

/**
 * Ensure all props option syntax are normalized into the
 * Object-based format.
 */
function normalizeProps (options, vm) {
  var props = options.props;
  if (!props) { return }
  var res = {};
  var i, val, name;
  if (Array.isArray(props)) {
    i = props.length;
    while (i--) {
      val = props[i];
      if (typeof val === 'string') {
        name = camelize(val);
        res[name] = { type: null };
      } else {
        warn('props must be strings when using array syntax.');
      }
    }
  } else if (isPlainObject(props)) {
    for (var key in props) {
      val = props[key];
      name = camelize(key);
      res[name] = isPlainObject(val)
        ? val
        : { type: val };
    }
  } else {
    warn(
      "Invalid value for option \"props\": expected an Array or an Object, " +
      "but got " + (toRawType(props)) + ".",
      vm
    );
  }
  options.props = res;
}

/**
 * Normalize all injections into Object-based format
 */
function normalizeInject (options, vm) {
  var inject = options.inject;
  var normalized = options.inject = {};
  if (Array.isArray(inject)) {
    for (var i = 0; i < inject.length; i++) {
      normalized[inject[i]] = { from: inject[i] };
    }
  } else if (isPlainObject(inject)) {
    for (var key in inject) {
      var val = inject[key];
      normalized[key] = isPlainObject(val)
        ? extend({ from: key }, val)
        : { from: val };
    }
  } else if ("development" !== 'production' && inject) {
    warn(
      "Invalid value for option \"inject\": expected an Array or an Object, " +
      "but got " + (toRawType(inject)) + ".",
      vm
    );
  }
}

/**
 * Normalize raw function directives into object format.
 */
function normalizeDirectives (options) {
  var dirs = options.directives;
  if (dirs) {
    for (var key in dirs) {
      var def = dirs[key];
      if (typeof def === 'function') {
        dirs[key] = { bind: def, update: def };
      }
    }
  }
}

function assertObjectType (name, value, vm) {
  if (!isPlainObject(value)) {
    warn(
      "Invalid value for option \"" + name + "\": expected an Object, " +
      "but got " + (toRawType(value)) + ".",
      vm
    );
  }
}

/**
 * Merge two option objects into a new one.
 * Core utility used in both instantiation and inheritance.
 */
function mergeOptions (
  parent,
  child,
  vm
) {
  {
    checkComponents(child);
  }

  if (typeof child === 'function') {
    child = child.options;
  }

  normalizeProps(child, vm);
  normalizeInject(child, vm);
  normalizeDirectives(child);
  var extendsFrom = child.extends;
  if (extendsFrom) {
    parent = mergeOptions(parent, extendsFrom, vm);
  }
  if (child.mixins) {
    for (var i = 0, l = child.mixins.length; i < l; i++) {
      parent = mergeOptions(parent, child.mixins[i], vm);
    }
  }
  var options = {};
  var key;
  for (key in parent) {
    mergeField(key);
  }
  for (key in child) {
    if (!hasOwn(parent, key)) {
      mergeField(key);
    }
  }
  function mergeField (key) {
    var strat = strats[key] || defaultStrat;
    options[key] = strat(parent[key], child[key], vm, key);
  }
  return options
}

/**
 * Resolve an asset.
 * This function is used because child instances need access
 * to assets defined in its ancestor chain.
 */
function resolveAsset (
  options,
  type,
  id,
  warnMissing
) {
  /* istanbul ignore if */
  if (typeof id !== 'string') {
    return
  }
  var assets = options[type];
  // check local registration variations first
  if (hasOwn(assets, id)) { return assets[id] }
  var camelizedId = camelize(id);
  if (hasOwn(assets, camelizedId)) { return assets[camelizedId] }
  var PascalCaseId = capitalize(camelizedId);
  if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] }
  // fallback to prototype chain
  var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];
  if ("development" !== 'production' && warnMissing && !res) {
    warn(
      'Failed to resolve ' + type.slice(0, -1) + ': ' + id,
      options
    );
  }
  return res
}

/*  */

function validateProp (
  key,
  propOptions,
  propsData,
  vm
) {
  var prop = propOptions[key];
  var absent = !hasOwn(propsData, key);
  var val