flowable-bpmn-modeler/docs/lib/0.2.5/js/chunk-vue.js

基于 `vue` `ant design vue`和 `bpmn.io@7.0` ，实现 flowable 的 modeler 模型设计器

(window["webpackJsonp"] = window["webpackJsonp"] || []).push([["chunk-vue"],{

/***/ "./node_modules/vue-loader/lib/runtime/componentNormalizer.js":
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/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
eval("__webpack_require__.r(__webpack_exports__);\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"default\", function() { return normalizeComponent; });\n/* globals __VUE_SSR_CONTEXT__ */\n\n// IMPORTANT: Do NOT use ES2015 features in this file (except for modules).\n// This module is a runtime utility for cleaner component module output and will\n// be included in the final webpack user bundle.\n\nfunction normalizeComponent (\n  scriptExports,\n  render,\n  staticRenderFns,\n  functionalTemplate,\n  injectStyles,\n  scopeId,\n  moduleIdentifier, /* server only */\n  shadowMode /* vue-cli only */\n) {\n  // Vue.extend constructor export interop\n  var options = typeof scriptExports === 'function'\n    ? scriptExports.options\n    : scriptExports\n\n  // render functions\n  if (render) {\n    options.render = render\n    options.staticRenderFns = staticRenderFns\n    options._compiled = true\n  }\n\n  // functional template\n  if (functionalTemplate) {\n    options.functional = true\n  }\n\n  // scopedId\n  if (scopeId) {\n    options._scopeId = 'data-v-' + scopeId\n  }\n\n  var hook\n  if (moduleIdentifier) { // server build\n    hook = function (context) {\n      // 2.3 injection\n      context =\n        context || // cached call\n        (this.$vnode && this.$vnode.ssrContext) || // stateful\n        (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional\n      // 2.2 with runInNewContext: true\n      if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {\n        context = __VUE_SSR_CONTEXT__\n      }\n      // inject component styles\n      if (injectStyles) {\n        injectStyles.call(this, context)\n      }\n      // register component module identifier for async chunk inferrence\n      if (context && context._registeredComponents) {\n        context._registeredComponents.add(moduleIdentifier)\n      }\n    }\n    // used by ssr in case component is cached and beforeCreate\n    // never gets called\n    options._ssrRegister = hook\n  } else if (injectStyles) {\n    hook = shadowMode\n      ? function () {\n        injectStyles.call(\n          this,\n          (options.functional ? this.parent : this).$root.$options.shadowRoot\n        )\n      }\n      : injectStyles\n  }\n\n  if (hook) {\n    if (options.functional) {\n      // for template-only hot-reload because in that case the render fn doesn't\n      // go through the normalizer\n      options._injectStyles = hook\n      // register for functional component in vue file\n      var originalRender = options.render\n      options.render = function renderWithStyleInjection (h, context) {\n        hook.call(context)\n        return originalRender(h, context)\n      }\n    } else {\n      // inject component registration as beforeCreate hook\n      var existing = options.beforeCreate\n      options.beforeCreate = existing\n        ? [].concat(existing, hook)\n        : [hook]\n    }\n  }\n\n  return {\n    exports: scriptExports,\n    options: options\n  }\n}\n\n\n//# sourceURL=webpack:///./node_modules/vue-loader/lib/runtime/componentNormalizer.js?");

/***/ }),

/***/ "./node_modules/vue-ref/index.js":
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/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
eval("\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nexports.default = {\n  install: function install(Vue) {\n    var options =\n      arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n    var directiveName = options.name || \"ref\";\n    Vue.directive(directiveName, {\n      bind: function bind(el, binding, vnode) {\n        Vue.nextTick(function() {\n          binding.value(vnode.componentInstance || el, vnode.key);\n        });\n        binding.value(vnode.componentInstance || el, vnode.key);\n      },\n      update: function update(el, binding, vnode, oldVnode) {\n        if (oldVnode.data && oldVnode.data.directives) {\n          var oldBinding = oldVnode.data.directives.find(function(directive) {\n            var name = directive.name;\n            return name === directiveName;\n          });\n          if (oldBinding && oldBinding.value !== binding.value) {\n            oldBinding && oldBinding.value(null, oldVnode.key);\n            binding.value(vnode.componentInstance || el, vnode.key);\n            return;\n          }\n        }\n        // Should not have this situation\n        if (\n          vnode.componentInstance !== oldVnode.componentInstance ||\n          vnode.elm !== oldVnode.elm\n        ) {\n          binding.value(vnode.componentInstance || el, vnode.key);\n        }\n      },\n      unbind: function unbind(el, binding, vnode) {\n        binding.value(null, vnode.key);\n      }\n    });\n  }\n};\n\n\n//# sourceURL=webpack:///./node_modules/vue-ref/index.js?");

/***/ }),

/***/ "./node_modules/vue-style-loader/lib/addStylesClient.js":
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/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
eval("__webpack_require__.r(__webpack_exports__);\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"default\", function() { return addStylesClient; });\n/* harmony import */ var _listToStyles__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./listToStyles */ \"./node_modules/vue-style-loader/lib/listToStyles.js\");\n/*\n  MIT License http://www.opensource.org/licenses/mit-license.php\n  Author Tobias Koppers @sokra\n  Modified by Evan You @yyx990803\n*/\n\n\n\nvar hasDocument = typeof document !== 'undefined'\n\nif (typeof DEBUG !== 'undefined' && DEBUG) {\n  if (!hasDocument) {\n    throw new Error(\n    'vue-style-loader cannot be used in a non-browser environment. ' +\n    \"Use { target: 'node' } in your Webpack config to indicate a server-rendering environment.\"\n  ) }\n}\n\n/*\ntype StyleObject = {\n  id: number;\n  parts: Array<StyleObjectPart>\n}\n\ntype StyleObjectPart = {\n  css: string;\n  media: string;\n  sourceMap: ?string\n}\n*/\n\nvar stylesInDom = {/*\n  [id: number]: {\n    id: number,\n    refs: number,\n    parts: Array<(obj?: StyleObjectPart) => void>\n  }\n*/}\n\nvar head = hasDocument && (document.head || document.getElementsByTagName('head')[0])\nvar singletonElement = null\nvar singletonCounter = 0\nvar isProduction = false\nvar noop = function () {}\nvar options = null\nvar ssrIdKey = 'data-vue-ssr-id'\n\n// Force single-tag solution on IE6-9, which has a hard limit on the # of <style>\n// tags it will allow on a page\nvar isOldIE = typeof navigator !== 'undefined' && /msie [6-9]\\b/.test(navigator.userAgent.toLowerCase())\n\nfunction addStylesClient (parentId, list, _isProduction, _options) {\n  isProduction = _isProduction\n\n  options = _options || {}\n\n  var styles = Object(_listToStyles__WEBPACK_IMPORTED_MODULE_0__[\"default\"])(parentId, list)\n  addStylesToDom(styles)\n\n  return function update (newList) {\n    var mayRemove = []\n    for (var i = 0; i < styles.length; i++) {\n      var item = styles[i]\n      var domStyle = stylesInDom[item.id]\n      domStyle.refs--\n      mayRemove.push(domStyle)\n    }\n    if (newList) {\n      styles = Object(_listToStyles__WEBPACK_IMPORTED_MODULE_0__[\"default\"])(parentId, newList)\n      addStylesToDom(styles)\n    } else {\n      styles = []\n    }\n    for (var i = 0; i < mayRemove.length; i++) {\n      var domStyle = mayRemove[i]\n      if (domStyle.refs === 0) {\n        for (var j = 0; j < domStyle.parts.length; j++) {\n          domStyle.parts[j]()\n        }\n        delete stylesInDom[domStyle.id]\n      }\n    }\n  }\n}\n\nfunction addStylesToDom (styles /* Array<StyleObject> */) {\n  for (var i = 0; i < styles.length; i++) {\n    var item = styles[i]\n    var domStyle = stylesInDom[item.id]\n    if (domStyle) {\n      domStyle.refs++\n      for (var j = 0; j < domStyle.parts.length; j++) {\n        domStyle.parts[j](item.parts[j])\n      }\n      for (; j < item.parts.length; j++) {\n        domStyle.parts.push(addStyle(item.parts[j]))\n      }\n      if (domStyle.parts.length > item.parts.length) {\n        domStyle.parts.length = item.parts.length\n      }\n    } else {\n      var parts = []\n      for (var j = 0; j < item.parts.length; j++) {\n        parts.push(addStyle(item.parts[j]))\n      }\n      stylesInDom[item.id] = { id: item.id, refs: 1, parts: parts }\n    }\n  }\n}\n\nfunction createStyleElement () {\n  var styleElement = document.createElement('style')\n  styleElement.type = 'text/css'\n  head.appendChild(styleElement)\n  return styleElement\n}\n\nfunction addStyle (obj /* StyleObjectPart */) {\n  var update, remove\n  var styleElement = document.querySelector('style[' + ssrIdKey + '~=\"' + obj.id + '\"]')\n\n  if (styleElement) {\n    if (isProduction) {\n      // has SSR styles and in production mode.\n      // simply do nothing.\n      return noop\n    } else {\n      // has SSR styles but in dev mode.\n      // for some reason Chrome can't handle source map in server-rendered\n      // style tags - source maps in <style> only works if the style tag is\n      // created and inserted dynamically. So we remove the server rendered\n      // styles and inject new ones.\n      styleElement.parentNode.removeChild(styleElement)\n    }\n  }\n\n  if (isOldIE) {\n    // use singleton mode for IE9.\n    var styleIndex = singletonCounter++\n    styleElement = singletonElement || (singletonElement = createStyleElement())\n    update = applyToSingletonTag.bind(null, styleElement, styleIndex, false)\n    remove = applyToSingletonTag.bind(null, styleElement, styleIndex, true)\n  } else {\n    // use multi-style-tag mode in all other cases\n    styleElement = createStyleElement()\n    update = applyToTag.bind(null, styleElement)\n    remove = function () {\n      styleElement.parentNode.removeChild(styleElement)\n    }\n  }\n\n  update(obj)\n\n  return function updateStyle (newObj /* StyleObjectPart */) {\n    if (newObj) {\n      if (newObj.css === obj.css &&\n          newObj.media === obj.media &&\n          newObj.sourceMap === obj.sourceMap) {\n        return\n      }\n      update(obj = newObj)\n    } else {\n      remove()\n    }\n  }\n}\n\nvar replaceText = (function () {\n  var textStore = []\n\n  return function (index, replacement) {\n    textStore[index] = replacement\n    return textStore.filter(Boolean).join('\\n')\n  }\n})()\n\nfunction applyToSingletonTag (styleElement, index, remove, obj) {\n  var css = remove ? '' : obj.css\n\n  if (styleElement.styleSheet) {\n    styleElement.styleSheet.cssText = replaceText(index, css)\n  } else {\n    var cssNode = document.createTextNode(css)\n    var childNodes = styleElement.childNodes\n    if (childNodes[index]) styleElement.removeChild(childNodes[index])\n    if (childNodes.length) {\n      styleElement.insertBefore(cssNode, childNodes[index])\n    } else {\n      styleElement.appendChild(cssNode)\n    }\n  }\n}\n\nfunction applyToTag (styleElement, obj) {\n  var css = obj.css\n  var media = obj.media\n  var sourceMap = obj.sourceMap\n\n  if (media) {\n    styleElement.setAttribute('media', media)\n  }\n  if (options.ssrId) {\n    styleElement.setAttribute(ssrIdKey, obj.id)\n  }\n\n  if (sourceMap) {\n    // https://developer.chrome.com/devtools/docs/javascript-debugging\n    // this makes source maps inside style tags work properly in Chrome\n    css += '\\n/*# sourceURL=' + sourceMap.sources[0] + ' */'\n    // http://stackoverflow.com/a/26603875\n    css += '\\n/*# sourceMappingURL=data:application/json;base64,' + btoa(unescape(encodeURIComponent(JSON.stringify(sourceMap)))) + ' */'\n  }\n\n  if (styleElement.styleSheet) {\n    styleElement.styleSheet.cssText = css\n  } else {\n    while (styleElement.firstChild) {\n      styleElement.removeChild(styleElement.firstChild)\n    }\n    styleElement.appendChild(document.createTextNode(css))\n  }\n}\n\n\n//# sourceURL=webpack:///./node_modules/vue-style-loader/lib/addStylesClient.js?");

/***/ }),

/***/ "./node_modules/vue-style-loader/lib/listToStyles.js":
/*!***********************************************************!*\
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/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
eval("__webpack_require__.r(__webpack_exports__);\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"default\", function() { return listToStyles; });\n/**\n * Translates the list format produced by css-loader into something\n * easier to manipulate.\n */\nfunction listToStyles (parentId, list) {\n  var styles = []\n  var newStyles = {}\n  for (var i = 0; i < list.length; i++) {\n    var item = list[i]\n    var id = item[0]\n    var css = item[1]\n    var media = item[2]\n    var sourceMap = item[3]\n    var part = {\n      id: parentId + ':' + i,\n      css: css,\n      media: media,\n      sourceMap: sourceMap\n    }\n    if (!newStyles[id]) {\n      styles.push(newStyles[id] = { id: id, parts: [part] })\n    } else {\n      newStyles[id].parts.push(part)\n    }\n  }\n  return styles\n}\n\n\n//# sourceURL=webpack:///./node_modules/vue-style-loader/lib/listToStyles.js?");

/***/ }),

/***/ "./node_modules/vue/dist/vue.runtime.esm.js":
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/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
eval("__webpack_require__.r(__webpack_exports__);\n/* WEBPACK VAR INJECTION */(function(global) {/*!\n * Vue.js v2.6.12\n * (c) 2014-2020 Evan You\n * Released under the MIT License.\n */\n/*  */\n\nvar emptyObject = Object.freeze({});\n\n// These helpers produce better VM code in JS engines due to their\n// explicitness and function inlining.\nfunction isUndef (v) {\n  return v === undefined || v === null\n}\n\nfunction isDef (v) {\n  return v !== undefined && v !== null\n}\n\nfunction isTrue (v) {\n  return v === true\n}\n\nfunction isFalse (v) {\n  return v === false\n}\n\n/**\n * Check if value is primitive.\n */\nfunction isPrimitive (value) {\n  return (\n    typeof value === 'string' ||\n    typeof value === 'number' ||\n    // $flow-disable-line\n    typeof value === 'symbol' ||\n    typeof value === 'boolean'\n  )\n}\n\n/**\n * Quick object check - this is primarily used to tell\n * Objects from primitive values when we know the value\n * is a JSON-compliant type.\n */\nfunction isObject (obj) {\n  return obj !== null && typeof obj === 'object'\n}\n\n/**\n * Get the raw type string of a value, e.g., [object Object].\n */\nvar _toString = Object.prototype.toString;\n\nfunction toRawType (value) {\n  return _toString.call(value).slice(8, -1)\n}\n\n/**\n * Strict object type check. Only returns true\n * for plain JavaScript objects.\n */\nfunction isPlainObject (obj) {\n  return _toString.call(obj) === '[object Object]'\n}\n\nfunction isRegExp (v) {\n  return _toString.call(v) === '[object RegExp]'\n}\n\n/**\n * Check if val is a valid array index.\n */\nfunction isValidArrayIndex (val) {\n  var n = parseFloat(String(val));\n  return n >= 0 && Math.floor(n) === n && isFinite(val)\n}\n\nfunction isPromise (val) {\n  return (\n    isDef(val) &&\n    typeof val.then === 'function' &&\n    typeof val.catch === 'function'\n  )\n}\n\n/**\n * Convert a value to a string that is actually rendered.\n */\nfunction toString (val) {\n  return val == null\n    ? ''\n    : Array.isArray(val) || (isPlainObject(val) && val.toString === _toString)\n      ? JSON.stringify(val, null, 2)\n      : String(val)\n}\n\n/**\n * Convert an input value to a number for persistence.\n * If the conversion fails, return original string.\n */\nfunction toNumber (val) {\n  var n = parseFloat(val);\n  return isNaN(n) ? val : n\n}\n\n/**\n * Make a map and return a function for checking if a key\n * is in that map.\n */\nfunction makeMap (\n  str,\n  expectsLowerCase\n) {\n  var map = Object.create(null);\n  var list = str.split(',');\n  for (var i = 0; i < list.length; i++) {\n    map[list[i]] = true;\n  }\n  return expectsLowerCase\n    ? function (val) { return map[val.toLowerCase()]; }\n    : function (val) { return map[val]; }\n}\n\n/**\n * Check if a tag is a built-in tag.\n */\nvar isBuiltInTag = makeMap('slot,component', true);\n\n/**\n * Check if an attribute is a reserved attribute.\n */\nvar isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');\n\n/**\n * Remove an item from an array.\n */\nfunction remove (arr, item) {\n  if (arr.length) {\n    var index = arr.indexOf(item);\n    if (index > -1) {\n      return arr.splice(index, 1)\n    }\n  }\n}\n\n/**\n * Check whether an object has the property.\n */\nvar hasOwnProperty = Object.prototype.hasOwnProperty;\nfunction hasOwn (obj, key) {\n  return hasOwnProperty.call(obj, key)\n}\n\n/**\n * Create a cached version of a pure function.\n */\nfunction cached (fn) {\n  var cache = Object.create(null);\n  return (function cachedFn (str) {\n    var hit = cache[str];\n    return hit || (cache[str] = fn(str))\n  })\n}\n\n/**\n * Camelize a hyphen-delimited string.\n */\nvar camelizeRE = /-(\\w)/g;\nvar camelize = cached(function (str) {\n  return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; })\n});\n\n/**\n * Capitalize a string.\n */\nvar capitalize = cached(function (str) {\n  return str.charAt(0).toUpperCase() + str.slice(1)\n});\n\n/**\n * Hyphenate a camelCase string.\n */\nvar hyphenateRE = /\\B([A-Z])/g;\nvar hyphenate = cached(function (str) {\n  return str.replace(hyphenateRE, '-$1').toLowerCase()\n});\n\n/**\n * Simple bind polyfill for environments that do not support it,\n * e.g., PhantomJS 1.x. Technically, we don't need this anymore\n * since native bind is now performant enough in most browsers.\n * But removing it would mean breaking code that was able to run in\n * PhantomJS 1.x, so this must be kept for backward compatibility.\n */\n\n/* istanbul ignore next */\nfunction polyfillBind (fn, ctx) {\n  function boundFn (a) {\n    var l = arguments.length;\n    return l\n      ? l > 1\n        ? fn.apply(ctx, arguments)\n        : fn.call(ctx, a)\n      : fn.call(ctx)\n  }\n\n  boundFn._length = fn.length;\n  return boundFn\n}\n\nfunction nativeBind (fn, ctx) {\n  return fn.bind(ctx)\n}\n\nvar bind = Function.prototype.bind\n  ? nativeBind\n  : polyfillBind;\n\n/**\n * Convert an Array-like object to a real Array.\n */\nfunction toArray (list, start) {\n  start = start || 0;\n  var i = list.length - start;\n  var ret = new Array(i);\n  while (i--) {\n    ret[i] = list[i + start];\n  }\n  return ret\n}\n\n/**\n * Mix properties into target object.\n */\nfunction extend (to, _from) {\n  for (var key in _from) {\n    to[key] = _from[key];\n  }\n  return to\n}\n\n/**\n * Merge an Array of Objects into a single Object.\n */\nfunction toObject (arr) {\n  var res = {};\n  for (var i = 0; i < arr.length; i++) {\n    if (arr[i]) {\n      extend(res, arr[i]);\n    }\n  }\n  return res\n}\n\n/* eslint-disable no-unused-vars */\n\n/**\n * Perform no operation.\n * Stubbing args to make Flow happy without leaving useless transpiled code\n * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).\n */\nfunction noop (a, b, c) {}\n\n/**\n * Always return false.\n */\nvar no = function (a, b, c) { return false; };\n\n/* eslint-enable no-unused-vars */\n\n/**\n * Return the same value.\n */\nvar identity = function (_) { return _; };\n\n/**\n * Check if two values are loosely equal - that is,\n * if they are plain objects, do they have the same shape?\n */\nfunction looseEqual (a, b) {\n  if (a === b) { return true }\n  var isObjectA = isObject(a);\n  var isObjectB = isObject(b);\n  if (isObjectA && isObjectB) {\n    try {\n      var isArrayA = Array.isArray(a);\n      var isArrayB = Array.isArray(b);\n      if (isArrayA && isArrayB) {\n        return a.length === b.length && a.every(function (e, i) {\n          return looseEqual(e, b[i])\n        })\n      } else if (a instanceof Date && b instanceof Date) {\n        return a.getTime() === b.getTime()\n      } else if (!isArrayA && !isArrayB) {\n        var keysA = Object.keys(a);\n        var keysB = Object.keys(b);\n        return keysA.length === keysB.length && keysA.every(function (key) {\n          return looseEqual(a[key], b[key])\n        })\n      } else {\n        /* istanbul ignore next */\n        return false\n      }\n    } catch (e) {\n      /* istanbul ignore next */\n      return false\n    }\n  } else if (!isObjectA && !isObjectB) {\n    return String(a) === String(b)\n  } else {\n    return false\n  }\n}\n\n/**\n * Return the first index at which a loosely equal value can be\n * found in the array (if value is a plain object, the array must\n * contain an object of the same shape), or -1 if it is not present.\n */\nfunction looseIndexOf (arr, val) {\n  for (var i = 0; i < arr.length; i++) {\n    if (looseEqual(arr[i], val)) { return i }\n  }\n  return -1\n}\n\n/**\n * Ensure a function is called only once.\n */\nfunction once (fn) {\n  var called = false;\n  return function () {\n    if (!called) {\n      called = true;\n      fn.apply(this, arguments);\n    }\n  }\n}\n\nvar SSR_ATTR = 'data-server-rendered';\n\nvar ASSET_TYPES = [\n  'component',\n  'directive',\n  'filter'\n];\n\nvar LIFECYCLE_HOOKS = [\n  'beforeCreate',\n  'created',\n  'beforeMount',\n  'mounted',\n  'beforeUpdate',\n  'updated',\n  'beforeDestroy',\n  'destroyed',\n  'activated',\n  'deactivated',\n  'errorCaptured',\n  'serverPrefetch'\n];\n\n/*  */\n\n\n\nvar config = ({\n  /**\n   * Option merge strategies (used in core/util/options)\n   */\n  // $flow-disable-line\n  optionMergeStrategies: Object.create(null),\n\n  /**\n   * Whether to suppress warnings.\n   */\n  silent: false,\n\n  /**\n   * Show production mode tip message on boot?\n   */\n  productionTip: \"lib\" !== 'production',\n\n  /**\n   * Whether to enable devtools\n   */\n  devtools: \"lib\" !== 'production',\n\n  /**\n   * Whether to record perf\n   */\n  performance: false,\n\n  /**\n   * Error handler for watcher errors\n   */\n  errorHandler: null,\n\n  /**\n   * Warn handler for watcher warns\n   */\n  warnHandler: null,\n\n  /**\n   * Ignore certain custom elements\n   */\n  ignoredElements: [],\n\n  /**\n   * Custom user key aliases for v-on\n   */\n  // $flow-disable-line\n  keyCodes: Object.create(null),\n\n  /**\n   * Check if a tag is reserved so that it cannot be registered as a\n   * component. This is platform-dependent and may be overwritten.\n   */\n  isReservedTag: no,\n\n  /**\n   * Check if an attribute is reserved so that it cannot be used as a component\n   * prop. This is platform-dependent and may be overwritten.\n   */\n  isReservedAttr: no,\n\n  /**\n   * Check if a tag is an unknown element.\n   * Platform-dependent.\n   */\n  isUnknownElement: no,\n\n  /**\n   * Get the namespace of an element\n   */\n  getTagNamespace: noop,\n\n  /**\n   * Parse the real tag name for the specific platform.\n   */\n  parsePlatformTagName: identity,\n\n  /**\n   * Check if an attribute must be bound using property, e.g. value\n   * Platform-dependent.\n   */\n  mustUseProp: no,\n\n  /**\n   * Perform updates asynchronously. Intended to be used by Vue Test Utils\n   * This will significantly reduce performance if set to false.\n   */\n  async: true,\n\n  /**\n   * Exposed for legacy reasons\n   */\n  _lifecycleHooks: LIFECYCLE_HOOKS\n});\n\n/*  */\n\n/**\n * unicode letters used for parsing html tags, component names and property paths.\n * using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname\n * skipping \\u10000-\\uEFFFF due to it freezing up PhantomJS\n */\nvar unicodeRegExp = /a-zA-Z\\u00B7\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u203F-\\u2040\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD/;\n\n/**\n * Check if a string starts with $ or _\n */\nfunction isReserved (str) {\n  var c = (str + '').charCodeAt(0);\n  return c === 0x24 || c === 0x5F\n}\n\n/**\n * Define a property.\n */\nfunction def (obj, key, val, enumerable) {\n  Object.defineProperty(obj, key, {\n    value: val,\n    enumerable: !!enumerable,\n    writable: true,\n    configurable: true\n  });\n}\n\n/**\n * Parse simple path.\n */\nvar bailRE = new RegExp((\"[^\" + (unicodeRegExp.source) + \".$_\\\\d]\"));\nfunction parsePath (path) {\n  if (bailRE.test(path)) {\n    return\n  }\n  var segments = path.split('.');\n  return function (obj) {\n    for (var i = 0; i < segments.length; i++) {\n      if (!obj) { return }\n      obj = obj[segments[i]];\n    }\n    return obj\n  }\n}\n\n/*  */\n\n// can we use __proto__?\nvar hasProto = '__proto__' in {};\n\n// Browser environment sniffing\nvar inBrowser = typeof window !== 'undefined';\nvar inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;\nvar weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();\nvar UA = inBrowser && window.navigator.userAgent.toLowerCase();\nvar isIE = UA && /msie|trident/.test(UA);\nvar isIE9 = UA && UA.indexOf('msie 9.0') > 0;\nvar isEdge = UA && UA.indexOf('edge/') > 0;\nvar isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android');\nvar isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios');\nvar isChrome = UA && /chrome\\/\\d+/.test(UA) && !isEdge;\nvar isPhantomJS = UA && /phantomjs/.test(UA);\nvar isFF = UA && UA.match(/firefox\\/(\\d+)/);\n\n// Firefox has a \"watch\" function on Object.prototype...\nvar nativeWatch = ({}).watch;\n\nvar supportsPassive = false;\nif (inBrowser) {\n  try {\n    var opts = {};\n    Object.defineProperty(opts, 'passive', ({\n      get: function get () {\n        /* istanbul ignore next */\n        supportsPassive = true;\n      }\n    })); // https://github.com/facebook/flow/issues/285\n    window.addEventListener('test-passive', null, opts);\n  } catch (e) {}\n}\n\n// this needs to be lazy-evaled because vue may be required before\n// vue-server-renderer can set VUE_ENV\nvar _isServer;\nvar isServerRendering = function () {\n  if (_isServer === undefined) {\n    /* istanbul ignore if */\n    if (!inBrowser && !inWeex && typeof global !== 'undefined') {\n      // detect presence of vue-server-renderer and avoid\n      // Webpack shimming the process\n      _isServer = global['process'] && global['process'].env.VUE_ENV === 'server';\n    } else {\n      _isServer = false;\n    }\n  }\n  return _isServer\n};\n\n// detect devtools\nvar devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;\n\n/* istanbul ignore next */\nfunction isNative (Ctor) {\n  return typeof Ctor === 'function' && /native code/.test(Ctor.toString())\n}\n\nvar hasSymbol =\n  typeof Symbol !== 'undefined' && isNative(Symbol) &&\n  typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);\n\nvar _Set;\n/* istanbul ignore if */ // $flow-disable-line\nif (typeof Set !== 'undefined' && isNative(Set)) {\n  // use native Set when available.\n  _Set = Set;\n} else {\n  // a non-standard Set polyfill that only works with primitive keys.\n  _Set = /*@__PURE__*/(function () {\n    function Set () {\n      this.set = Object.create(null);\n    }\n    Set.prototype.has = function has (key) {\n      return this.set[key] === true\n    };\n    Set.prototype.add = function add (key) {\n      this.set[key] = true;\n    };\n    Set.prototype.clear = function clear () {\n      this.set = Object.create(null);\n    };\n\n    return Set;\n  }());\n}\n\n/*  */\n\nvar warn = noop;\nvar tip = noop;\nvar generateComponentTrace = (noop); // work around flow check\nvar formatComponentName = (noop);\n\nif (true) {\n  var hasConsole = typeof console !== 'undefined';\n  var classifyRE = /(?:^|[-_])(\\w)/g;\n  var classify = function (str) { return str\n    .replace(classifyRE, function (c) { return c.toUpperCase(); })\n    .replace(/[-_]/g, ''); };\n\n  warn = function (msg, vm) {\n    var trace = vm ? generateComponentTrace(vm) : '';\n\n    if (config.warnHandler) {\n      config.warnHandler.call(null, msg, vm, trace);\n    } else if (hasConsole && (!config.silent)) {\n      console.error((\"[Vue warn]: \" + msg + trace));\n    }\n  };\n\n  tip = function (msg, vm) {\n    if (hasConsole && (!config.silent)) {\n      console.warn(\"[Vue tip]: \" + msg + (\n        vm ? generateComponentTrace(vm) : ''\n      ));\n    }\n  };\n\n  formatComponentName = function (vm, includeFile) {\n    if (vm.$root === vm) {\n      return '<Root>'\n    }\n    var options = typeof vm === 'function' && vm.cid != null\n      ? vm.options\n      : vm._isVue\n        ? vm.$options || vm.constructor.options\n        : vm;\n    var name = options.name || options._componentTag;\n    var file = options.__file;\n    if (!name && file) {\n      var match = file.match(/([^/\\\\]+)\\.vue$/);\n      name = match && match[1];\n    }\n\n    return (\n      (name ? (\"<\" + (classify(name)) + \">\") : \"<Anonymous>\") +\n      (file && includeFile !== false ? (\" at \" + file) : '')\n    )\n  };\n\n  var repeat = function (str, n) {\n    var res = '';\n    while (n) {\n      if (n % 2 === 1) { res += str; }\n      if (n > 1) { str += str; }\n      n >>= 1;\n    }\n    return res\n  };\n\n  generateComponentTrace = function (vm) {\n    if (vm._isVue && vm.$parent) {\n      var tree = [];\n      var currentRecursiveSequence = 0;\n      while (vm) {\n        if (tree.length > 0) {\n          var last = tree[tree.length - 1];\n          if (last.constructor === vm.constructor) {\n            currentRecursiveSequence++;\n            vm = vm.$parent;\n            continue\n          } else if (currentRecursiveSequence > 0) {\n            tree[tree.length - 1] = [last, currentRecursiveSequence];\n            currentRecursiveSequence = 0;\n          }\n        }\n        tree.push(vm);\n        vm = vm.$parent;\n      }\n      return '\\n\\nfound in\\n\\n' + tree\n        .map(function (vm, i) { return (\"\" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm)\n            ? ((formatComponentName(vm[0])) + \"... (\" + (vm[1]) + \" recursive calls)\")\n            : formatComponentName(vm))); })\n        .join('\\n')\n    } else {\n      return (\"\\n\\n(found in \" + (formatComponentName(vm)) + \")\")\n    }\n  };\n}\n\n/*  */\n\nvar uid = 0;\n\n/**\n * A dep is an observable that can have multiple\n * directives subscribing to it.\n */\nvar Dep = function Dep () {\n  this.id = uid++;\n  this.subs = [];\n};\n\nDep.prototype.addSub = function addSub (sub) {\n  this.subs.push(sub);\n};\n\nDep.prototype.removeSub = function removeSub (sub) {\n  remove(this.subs, sub);\n};\n\nDep.prototype.depend = function depend () {\n  if (Dep.target) {\n    Dep.target.addDep(this);\n  }\n};\n\nDep.prototype.notify = function notify () {\n  // stabilize the subscriber list first\n  var subs = this.subs.slice();\n  if ( true && !config.async) {\n    // subs aren't sorted in scheduler if not running async\n    // we need to sort them now to make sure they fire in correct\n    // order\n    subs.sort(function (a, b) { return a.id - b.id; });\n  }\n  for (var i = 0, l = subs.length; i < l; i++) {\n    subs[i].update();\n  }\n};\n\n// The current target watcher being evaluated.\n// This is globally unique because only one watcher\n// can be evaluated at a time.\nDep.target = null;\nvar targetStack = [];\n\nfunction pushTarget (target) {\n  targetStack.push(target);\n  Dep.target = target;\n}\n\nfunction popTarget () {\n  targetStack.pop();\n  Dep.target = targetStack[targetStack.length - 1];\n}\n\n/*  */\n\nvar VNode = function VNode (\n  tag,\n  data,\n  children,\n  text,\n  elm,\n  context,\n  componentOptions,\n  asyncFactory\n) {\n  this.tag = tag;\n  this.data = data;\n  this.children = children;\n  this.text = text;\n  this.elm = elm;\n  this.ns = undefined;\n  this.context = context;\n  this.fnContext = undefined;\n  this.fnOptions = undefined;\n  this.fnScopeId = undefined;\n  this.key = data && data.key;\n  this.componentOptions = componentOptions;\n  this.componentInstance = undefined;\n  this.parent = undefined;\n  this.raw = false;\n  this.isStatic = false;\n  this.isRootInsert = true;\n  this.isComment = false;\n  this.isCloned = false;\n  this.isOnce = false;\n  this.asyncFactory = asyncFactory;\n  this.asyncMeta = undefined;\n  this.isAsyncPlaceholder = false;\n};\n\nvar prototypeAccessors = { child: { configurable: true } };\n\n// DEPRECATED: alias for componentInstance for backwards compat.\n/* istanbul ignore next */\nprototypeAccessors.child.get = function () {\n  return this.componentInstance\n};\n\nObject.defineProperties( VNode.prototype, prototypeAccessors );\n\nvar createEmptyVNode = function (text) {\n  if ( text === void 0 ) text = '';\n\n  var node = new VNode();\n  node.text = text;\n  node.isComment = true;\n  return node\n};\n\nfunction createTextVNode (val) {\n  return new VNode(undefined, undefined, undefined, String(val))\n}\n\n// optimized shallow clone\n// used for static nodes and slot nodes because they may be reused across\n// multiple renders, cloning them avoids errors when DOM manipulations rely\n// on their elm reference.\nfunction cloneVNode (vnode) {\n  var cloned = new VNode(\n    vnode.tag,\n    vnode.data,\n    // #7975\n    // clone children array to avoid mutating original in case of cloning\n    // a child.\n    vnode.children && vnode.children.slice(),\n    vnode.text,\n    vnode.elm,\n    vnode.context,\n    vnode.componentOptions,\n    vnode.asyncFactory\n  );\n  cloned.ns = vnode.ns;\n  cloned.isStatic = vnode.isStatic;\n  cloned.key = vnode.key;\n  cloned.isComment = vnode.isComment;\n  cloned.fnContext = vnode.fnContext;\n  cloned.fnOptions = vnode.fnOptions;\n  cloned.fnScopeId = vnode.fnScopeId;\n  cloned.asyncMeta = vnode.asyncMeta;\n  cloned.isCloned = true;\n  return cloned\n}\n\n/*\n * not type checking this file because flow doesn't play well with\n * dynamically accessing methods on Array prototype\n */\n\nvar arrayProto = Array.prototype;\nvar arrayMethods = Object.create(arrayProto);\n\nvar methodsToPatch = [\n  'push',\n  'pop',\n  'shift',\n  'unshift',\n  'splice',\n  'sort',\n  'reverse'\n];\n\n/**\n * Intercept mutating methods and emit events\n */\nmethodsToPatch.forEach(function (method) {\n  // cache original method\n  var original = arrayProto[method];\n  def(arrayMethods, method, function mutator () {\n    var args = [], len = arguments.length;\n    while ( len-- ) args[ len ] = arguments[ len ];\n\n    var result = original.apply(this, args);\n    var ob = this.__ob__;\n    var inserted;\n    switch (method) {\n      case 'push':\n      case 'unshift':\n        inserted = args;\n        break\n      case 'splice':\n        inserted = args.slice(2);\n        break\n    }\n    if (inserted) { ob.observeArray(inserted); }\n    // notify change\n    ob.dep.notify();\n    return result\n  });\n});\n\n/*  */\n\nvar arrayKeys = Object.getOwnPropertyNames(arrayMethods);\n\n/**\n * In some cases we may want to disable observation inside a component's\n * update computation.\n */\nvar shouldObserve = true;\n\nfunction toggleObserving (value) {\n  shouldObserve = value;\n}\n\n/**\n * Observer class that is attached to each observed\n * object. Once attached, the observer converts the target\n * object's property keys into getter/setters that\n * collect dependencies and dispatch updates.\n */\nvar Observer = function Observer (value) {\n  this.value = value;\n  this.dep = new Dep();\n  this.vmCount = 0;\n  def(value, '__ob__', this);\n  if (Array.isArray(value)) {\n    if (hasProto) {\n      protoAugment(value, arrayMethods);\n    } else {\n      copyAugment(value, arrayMethods, arrayKeys);\n    }\n    this.observeArray(value);\n  } else {\n    this.walk(value);\n  }\n};\n\n/**\n * Walk through all properties and convert them into\n * getter/setters. This method should only be called when\n * value type is Object.\n */\nObserver.prototype.walk = function walk (obj) {\n  var keys = Object.keys(obj);\n  for (var i = 0; i < keys.length; i++) {\n    defineReactive$$1(obj, keys[i]);\n  }\n};\n\n/**\n * Observe a list of Array items.\n */\nObserver.prototype.observeArray = function observeArray (items) {\n  for (var i = 0, l = items.length; i < l; i++) {\n    observe(items[i]);\n  }\n};\n\n// helpers\n\n/**\n * Augment a target Object or Array by intercepting\n * the prototype chain using __proto__\n */\nfunction protoAugment (target, src) {\n  /* eslint-disable no-proto */\n  target.__proto__ = src;\n  /* eslint-enable no-proto */\n}\n\n/**\n * Augment a target Object or Array by defining\n * hidden properties.\n */\n/* istanbul ignore next */\nfunction copyAugment (target, src, keys) {\n  for (var i = 0, l = keys.length; i < l; i++) {\n    var key = keys[i];\n    def(target, key, src[key]);\n  }\n}\n\n/**\n * Attempt to create an observer instance for a value,\n * returns the new observer if successfully observed,\n * or the existing observer if the value already has one.\n */\nfunction observe (value, asRootData) {\n  if (!isObject(value) || value instanceof VNode) {\n    return\n  }\n  var ob;\n  if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {\n    ob = value.__ob__;\n  } else if (\n    shouldObserve &&\n    !isServerRendering() &&\n    (Array.isArray(value) || isPlainObject(value)) &&\n    Object.isExtensible(value) &&\n    !value._isVue\n  ) {\n    ob = new Observer(value);\n  }\n  if (asRootData && ob) {\n    ob.vmCount++;\n  }\n  return ob\n}\n\n/**\n * Define a reactive property on an Object.\n */\nfunction defineReactive$$1 (\n  obj,\n  key,\n  val,\n  customSetter,\n  shallow\n) {\n  var dep = new Dep();\n\n  var property = Object.getOwnPropertyDescriptor(obj, key);\n  if (property && property.configurable === false) {\n    return\n  }\n\n  // cater for pre-defined getter/setters\n  var getter = property && property.get;\n  var setter = property && property.set;\n  if ((!getter || setter) && arguments.length === 2) {\n    val = obj[key];\n  }\n\n  var childOb = !shallow && observe(val);\n  Object.defineProperty(obj, key, {\n    enumerable: true,\n    configurable: true,\n    get: function reactiveGetter () {\n      var value = getter ? getter.call(obj) : val;\n      if (Dep.target) {\n        dep.depend();\n        if (childOb) {\n          childOb.dep.depend();\n          if (Array.isArray(value)) {\n            dependArray(value);\n          }\n        }\n      }\n      return value\n    },\n    set: function reactiveSetter (newVal) {\n      var value = getter ? getter.call(obj) : val;\n      /* eslint-disable no-self-compare */\n      if (newVal === value || (newVal !== newVal && value !== value)) {\n        return\n      }\n      /* eslint-enable no-self-compare */\n      if ( true && customSetter) {\n        customSetter();\n      }\n      // #7981: for accessor properties without setter\n      if (getter && !setter) { return }\n      if (setter) {\n        setter.call(obj, newVal);\n      } else {\n        val = newVal;\n      }\n      childOb = !shallow && observe(newVal);\n      dep.notify();\n    }\n  });\n}\n\n/**\n * Set a property on an object. Adds the new property and\n * triggers change notification if the property doesn't\n * already exist.\n */\nfunction set (target, key, val) {\n  if ( true &&\n    (isUndef(target) || isPrimitive(target))\n  ) {\n    warn((\"Cannot set reactive property on undefined, null, or primitive value: \" + ((target))));\n  }\n  if (Array.isArray(target) && isValidArrayIndex(key)) {\n    target.length = Math.max(target.length, key);\n    target.splice(key, 1, val);\n    return val\n  }\n  if (key in target && !(key in Object.prototype)) {\n    target[key] = val;\n    return val\n  }\n  var ob = (target).__ob__;\n  if (target._isVue || (ob && ob.vmCount)) {\n     true && warn(\n      'Avoid adding reactive properties to a Vue instance or its root $data ' +\n      'at runtime - declare it upfront in the data option.'\n    );\n    return val\n  }\n  if (!ob) {\n    target[key] = val;\n    return val\n  }\n  defineReactive$$1(ob.value, key, val);\n  ob.dep.notify();\n  return val\n}\n\n/**\n * Delete a property and trigger change if necessary.\n */\nfunction del (target, key) {\n  if ( true &&\n    (isUndef(target) || isPrimitive(target))\n  ) {\n    warn((\"Cannot delete reactive property on undefined, null, or primitive value: \" + ((target))));\n  }\n  if (Array.isArray(target) && isValidArrayIndex(key)) {\n    target.splice(key, 1);\n    return\n  }\n  var ob = (target).__ob__;\n  if (target._isVue || (ob && ob.vmCount)) {\n     true && warn(\n      'Avoid deleting properties on a Vue instance or its root $data ' +\n      '- just set it to null.'\n    );\n    return\n  }\n  if (!hasOwn(target, key)) {\n    return\n  }\n  delete target[key];\n  if (!ob) {\n    return\n  }\n  ob.dep.notify();\n}\n\n/**\n * Collect dependencies on array elements when the array is touched, since\n * we cannot intercept array element access like property getters.\n */\nfunction dependArray (value) {\n  for (var e = (void 0), i = 0, l = value.length; i < l; i++) {\n    e = value[i];\n    e && e.__ob__ && e.__ob__.dep.depend();\n    if (Array.isArray(e)) {\n      dependArray(e);\n    }\n  }\n}\n\n/*  */\n\n/**\n * Option overwriting strategies are functions that handle\n * how to merge a parent option value and a child option\n * value into the final value.\n */\nvar strats = config.optionMergeStrategies;\n\n/**\n * Options with restrictions\n */\nif (true) {\n  strats.el = strats.propsData = function (parent, child, vm, key) {\n    if (!vm) {\n      warn(\n        \"option \\\"\" + key + \"\\\" can only be used during instance \" +\n        'creation with the `new` keyword.'\n      );\n    }\n    return defaultStrat(parent, child)\n  };\n}\n\n/**\n * Helper that recursively merges two data objects together.\n */\nfunction mergeData (to, from) {\n  if (!from) { return to }\n  var key, toVal, fromVal;\n\n  var keys = hasSymbol\n    ? Reflect.ownKeys(from)\n    : Object.keys(from);\n\n  for (var i = 0; i < keys.length; i++) {\n    key = keys[i];\n    // in case the object is already observed...\n    if (key === '__ob__') { continue }\n    toVal = to[key];\n    fromVal = from[key];\n    if (!hasOwn(to, key)) {\n      set(to, key, fromVal);\n    } else if (\n      toVal !== fromVal &&\n      isPlainObject(toVal) &&\n      isPlainObject(fromVal)\n    ) {\n      mergeData(toVal, fromVal);\n    }\n  }\n  return to\n}\n\n/**\n * Data\n */\nfunction mergeDataOrFn (\n  parentVal,\n  childVal,\n  vm\n) {\n  if (!vm) {\n    // in a Vue.extend merge, both should be functions\n    if (!childVal) {\n      return parentVal\n    }\n    if (!parentVal) {\n      return childVal\n    }\n    // when parentVal & childVal are both present,\n    // we need to return a function that returns the\n    // merged result of both functions... no need to\n    // check if parentVal is a function here because\n    // it has to be a function to pass previous merges.\n    return function mergedDataFn () {\n      return mergeData(\n        typeof childVal === 'function' ? childVal.call(this, this) : childVal,\n        typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal\n      )\n    }\n  } else {\n    return function mergedInstanceDataFn () {\n      // instance merge\n      var instanceData = typeof childVal === 'function'\n        ? childVal.call(vm, vm)\n        : childVal;\n      var defaultData = typeof parentVal === 'function'\n        ? parentVal.call(vm, vm)\n        : parentVal;\n      if (instanceData) {\n        return mergeData(instanceData, defaultData)\n      } else {\n        return defaultData\n      }\n    }\n  }\n}\n\nstrats.data = function (\n  parentVal,\n  childVal,\n  vm\n) {\n  if (!vm) {\n    if (childVal && typeof childVal !== 'function') {\n       true && warn(\n        'The \"data\" option should be a function ' +\n        'that returns a per-instance value in component ' +\n        'definitions.',\n        vm\n      );\n\n      return parentVal\n    }\n    return mergeDataOrFn(parentVal, childVal)\n  }\n\n  return mergeDataOrFn(parentVal, childVal, vm)\n};\n\n/**\n * Hooks and props are merged as arrays.\n */\nfunction mergeHook (\n  parentVal,\n  childVal\n) {\n  var res = childVal\n    ? parentVal\n      ? parentVal.concat(childVal)\n      : Array.isArray(childVal)\n        ? childVal\n        : [childVal]\n    : parentVal;\n  return res\n    ? dedupeHooks(res)\n    : res\n}\n\nfunction dedupeHooks (hooks) {\n  var res = [];\n  for (var i = 0; i < hooks.length; i++) {\n    if (res.indexOf(hooks[i]) === -1) {\n      res.push(hooks[i]);\n    }\n  }\n  return res\n}\n\nLIFECYCLE_HOOKS.forEach(function (hook) {\n  strats[hook] = mergeHook;\n});\n\n/**\n * Assets\n *\n * When a vm is present (instance creation), we need to do\n * a three-way merge between constructor options, instance\n * options and parent options.\n */\nfunction mergeAssets (\n  parentVal,\n  childVal,\n  vm,\n  key\n) {\n  var res = Object.create(parentVal || null);\n  if (childVal) {\n     true && assertObjectType(key, childVal, vm);\n    return extend(res, childVal)\n  } else {\n    return res\n  }\n}\n\nASSET_TYPES.forEach(function (type) {\n  strats[type + 's'] = mergeAssets;\n});\n\n/**\n * Watchers.\n *\n * Watchers hashes should not overwrite one\n * another, so we merge them as arrays.\n */\nstrats.watch = function (\n  parentVal,\n  childVal,\n  vm,\n  key\n) {\n  // work around Firefox's Object.prototype.watch...\n  if (parentVal === nativeWatch) { parentVal = undefined; }\n  if (childVal === nativeWatch) { childVal = undefined; }\n  /* istanbul ignore if */\n  if (!childVal) { return Object.create(parentVal || null) }\n  if (true) {\n    assertObjectType(key, childVal, vm);\n  }\n  if (!parentVal) { return childVal }\n  var ret = {};\n  extend(ret, parentVal);\n  for (var key$1 in childVal) {\n    var parent = ret[key$1];\n    var child = childVal[key$1];\n    if (parent && !Array.isArray(parent)) {\n      parent = [parent];\n    }\n    ret[key$1] = parent\n      ? parent.concat(child)\n      : Array.isArray(child) ? child : [child];\n  }\n  return ret\n};\n\n/**\n * Other object hashes.\n */\nstrats.props =\nstrats.methods =\nstrats.inject =\nstrats.computed = function (\n  parentVal,\n  childVal,\n  vm,\n  key\n) {\n  if (childVal && \"lib\" !== 'production') {\n    assertObjectType(key, childVal, vm);\n  }\n  if (!parentVal) { return childVal }\n  var ret = Object.create(null);\n  extend(ret, parentVal);\n  if (childVal) { extend(ret, childVal); }\n  return ret\n};\nstrats.provide = mergeDataOrFn;\n\n/**\n * Default strategy.\n */\nvar defaultStrat = function (parentVal, childVal) {\n  return childVal === undefined\n    ? parentVal\n    : childVal\n};\n\n/**\n * Validate component names\n */\nfunction checkComponents (options) {\n  for (var key in options.components) {\n    validateComponentName(key);\n  }\n}\n\nfunction validateComponentName (name) {\n  if (!new RegExp((\"^[a-zA-Z][\\\\-\\\\.0-9_\" + (unicodeRegExp.source) + \"]*$\")).test(name)) {\n    warn(\n      'Invalid component name: \"' + name + '\". Component names ' +\n      'should conform to valid custom element name in html5 specification.'\n    );\n  }\n  if (isBuiltInTag(name) || config.isReservedTag(name)) {\n    warn(\n      'Do not use built-in or reserved HTML elements as component ' +\n      'id: ' + name\n    );\n  }\n}\n\n/**\n * Ensure all props option syntax are normalized into the\n * Object-based format.\n */\nfunction normalizeProps (options, vm) {\n  var props = options.props;\n  if (!props) { return }\n  var res = {};\n  var i, val, name;\n  if (Array.isArray(props)) {\n    i = props.length;\n    while (i--) {\n      val = props[i];\n      if (typeof val === 'string') {\n        name = camelize(val);\n        res[name] = { type: null };\n      } else if (true) {\n        warn('props must be strings when using array syntax.');\n      }\n    }\n  } else if (isPlainObject(props)) {\n    for (var key in props) {\n      val = props[key];\n      name = camelize(key);\n      res[name] = isPlainObject(val)\n        ? val\n        : { type: val };\n    }\n  } else if (true) {\n    warn(\n      \"Invalid value for option \\\"props\\\": expected an Array or an Object, \" +\n      \"but got \" + (toRawType(props)) + \".\",\n      vm\n    );\n  }\n  options.props = res;\n}\n\n/**\n * Normalize all injections into Object-based format\n */\nfunction normalizeInject (options, vm) {\n  var inject = options.inject;\n  if (!inject) { return }\n  var normalized = options.inject = {};\n  if (Array.isArray(inject)) {\n    for (var i = 0; i < inject.length; i++) {\n      normalized[inject[i]] = { from: inject[i] };\n    }\n  } else if (isPlainObject(inject)) {\n    for (var key in inject) {\n      var val = inject[key];\n      normalized[key] = isPlainObject(val)\n        ? exten