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node_modules/vue/src/core/util/debug.js

@@ -41,7 +41,7 @@ if (process.env.NODE_ENV !== 'production') {
       ? vm.options
       : vm._isVue
         ? vm.$options || vm.constructor.options
-        : vm || {}
+        : vm
     let name = options.name || options._componentTag
     const file = options.__file
     if (!name && file) {

node_modules/vue/src/core/util/env.js

@@ -14,6 +14,8 @@ export const isEdge = UA && UA.indexOf('edge/') > 0
 export const isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android')
 export const isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios')
 export const isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge
+export const isPhantomJS = UA && /phantomjs/.test(UA)
+export const isFF = UA && UA.match(/firefox\/(\d+)/)
 
 // Firefox has a "watch" function on Object.prototype...
 export const nativeWatch = ({}).watch
@@ -41,7 +43,7 @@ export const isServerRendering = () => {
     if (!inBrowser && !inWeex && typeof global !== 'undefined') {
       // detect presence of vue-server-renderer and avoid
       // Webpack shimming the process
-      _isServer = global['process'].env.VUE_ENV === 'server'
+      _isServer = global['process'] && global['process'].env.VUE_ENV === 'server'
     } else {
       _isServer = false
     }

node_modules/vue/src/core/util/error.js

@@ -3,25 +3,55 @@
 import config from '../config'
 import { warn } from './debug'
 import { inBrowser, inWeex } from './env'
+import { isPromise } from 'shared/util'
+import { pushTarget, popTarget } from '../observer/dep'
 
 export function handleError (err: Error, vm: any, info: string) {
-  if (vm) {
-    let cur = vm
-    while ((cur = cur.$parent)) {
-      const hooks = cur.$options.errorCaptured
-      if (hooks) {
-        for (let i = 0; i < hooks.length; i++) {
-          try {
-            const capture = hooks[i].call(cur, err, vm, info) === false
-            if (capture) return
-          } catch (e) {
-            globalHandleError(e, cur, 'errorCaptured hook')
+  // Deactivate deps tracking while processing error handler to avoid possible infinite rendering.
+  // See: https://github.com/vuejs/vuex/issues/1505
+  pushTarget()
+  try {
+    if (vm) {
+      let cur = vm
+      while ((cur = cur.$parent)) {
+        const hooks = cur.$options.errorCaptured
+        if (hooks) {
+          for (let i = 0; i < hooks.length; i++) {
+            try {
+              const capture = hooks[i].call(cur, err, vm, info) === false
+              if (capture) return
+            } catch (e) {
+              globalHandleError(e, cur, 'errorCaptured hook')
+            }
           }
         }
       }
     }
+    globalHandleError(err, vm, info)
+  } finally {
+    popTarget()
   }
-  globalHandleError(err, vm, info)
+}
+
+export function invokeWithErrorHandling (
+  handler: Function,
+  context: any,
+  args: null | any[],
+  vm: any,
+  info: string
+) {
+  let res
+  try {
+    res = args ? handler.apply(context, args) : handler.call(context)
+    if (res && !res._isVue && isPromise(res)) {
+      // issue #9511
+      // reassign to res to avoid catch triggering multiple times when nested calls
+      res = res.catch(e => handleError(e, vm, info + ` (Promise/async)`))
+    }
+  } catch (e) {
+    handleError(e, vm, info)
+  }
+  return res
 }
 
 function globalHandleError (err, vm, info) {
@@ -29,7 +59,11 @@ function globalHandleError (err, vm, info) {
     try {
       return config.errorHandler.call(null, err, vm, info)
     } catch (e) {
-      logError(e, null, 'config.errorHandler')
+      // if the user intentionally throws the original error in the handler,
+      // do not log it twice
+      if (e !== err) {
+        logError(e, null, 'config.errorHandler')
+      }
     }
   }
   logError(err, vm, info)

node_modules/vue/src/core/util/lang.js

@@ -1,5 +1,12 @@
 /* @flow */
 
+/**
+ * unicode letters used for parsing html tags, component names and property paths.
+ * using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname
+ * skipping \u10000-\uEFFFF due to it freezing up PhantomJS
+ */
+export const 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/
+
 /**
  * Check if a string starts with $ or _
  */
@@ -23,7 +30,7 @@ export function def (obj: Object, key: string, val: any, enumerable?: boolean) {
 /**
  * Parse simple path.
  */
-const bailRE = /[^\w.$]/
+const bailRE = new RegExp(`[^${unicodeRegExp.source}.$_\\d]`)
 export function parsePath (path: string): any {
   if (bailRE.test(path)) {
     return

node_modules/vue/src/core/util/next-tick.js

@@ -1,9 +1,11 @@
 /* @flow */
-/* globals MessageChannel */
+/* globals MutationObserver */
 
 import { noop } from 'shared/util'
 import { handleError } from './error'
-import { isIOS, isNative } from './env'
+import { isIE, isIOS, isNative } from './env'
+
+export let isUsingMicroTask = false
 
 const callbacks = []
 let pending = false
@@ -17,74 +19,69 @@ function flushCallbacks () {
   }
 }
 
-// Here we have async deferring wrappers using both microtasks and (macro) tasks.
-// In < 2.4 we used microtasks everywhere, but there are some scenarios where
-// microtasks have too high a priority and fire in between supposedly
-// sequential events (e.g. #4521, #6690) or even between bubbling of the same
-// event (#6566). However, using (macro) tasks everywhere also has subtle problems
-// when state is changed right before repaint (e.g. #6813, out-in transitions).
-// Here we use microtask by default, but expose a way to force (macro) task when
-// needed (e.g. in event handlers attached by v-on).
-let microTimerFunc
-let macroTimerFunc
-let useMacroTask = false
+// Here we have async deferring wrappers using microtasks.
+// In 2.5 we used (macro) tasks (in combination with microtasks).
+// However, it has subtle problems when state is changed right before repaint
+// (e.g. #6813, out-in transitions).
+// Also, using (macro) tasks in event handler would cause some weird behaviors
+// that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109).
+// So we now use microtasks everywhere, again.
+// A major drawback of this tradeoff is that there are some scenarios
+// where microtasks have too high a priority and fire in between supposedly
+// sequential events (e.g. #4521, #6690, which have workarounds)
+// or even between bubbling of the same event (#6566).
+let timerFunc
 
-// Determine (macro) task defer implementation.
-// Technically setImmediate should be the ideal choice, but it's only available
-// in IE. 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)) {
-  macroTimerFunc = () => {
-    setImmediate(flushCallbacks)
-  }
-} else if (typeof MessageChannel !== 'undefined' && (
-  isNative(MessageChannel) ||
-  // PhantomJS
-  MessageChannel.toString() === '[object MessageChannelConstructor]'
-)) {
-  const channel = new MessageChannel()
-  const port = channel.port2
-  channel.port1.onmessage = flushCallbacks
-  macroTimerFunc = () => {
-    port.postMessage(1)
-  }
-} else {
-  /* istanbul ignore next */
-  macroTimerFunc = () => {
-    setTimeout(flushCallbacks, 0)
-  }
-}
-
-// Determine microtask defer implementation.
+// The nextTick behavior leverages the microtask queue, which can be accessed
+// via either native Promise.then or MutationObserver.
+// MutationObserver has wider support, however it is seriously bugged in
+// UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It
+// completely stops working after triggering a few times... so, if native
+// Promise is available, we will use it:
 /* istanbul ignore next, $flow-disable-line */
 if (typeof Promise !== 'undefined' && isNative(Promise)) {
   const p = Promise.resolve()
-  microTimerFunc = () => {
+  timerFunc = () => {
     p.then(flushCallbacks)
-    // in problematic UIWebViews, Promise.then doesn't completely break, but
+    // In problematic UIWebViews, Promise.then doesn't completely break, but
     // it can get stuck in a weird state where callbacks are pushed into the
     // microtask queue but the queue isn't being flushed, until the browser
     // needs to do some other work, e.g. handle a timer. Therefore we can
     // "force" the microtask queue to be flushed by adding an empty timer.
     if (isIOS) setTimeout(noop)
   }
-} else {
-  // fallback to macro
-  microTimerFunc = macroTimerFunc
-}
-
-/**
- * Wrap a function so that if any code inside triggers state change,
- * the changes are queued using a (macro) task instead of a microtask.
- */
-export function withMacroTask (fn: Function): Function {
-  return fn._withTask || (fn._withTask = function () {
-    useMacroTask = true
-    const res = fn.apply(null, arguments)
-    useMacroTask = false
-    return res
+  isUsingMicroTask = true
+} else if (!isIE && typeof MutationObserver !== 'undefined' && (
+  isNative(MutationObserver) ||
+  // PhantomJS and iOS 7.x
+  MutationObserver.toString() === '[object MutationObserverConstructor]'
+)) {
+  // Use MutationObserver where native Promise is not available,
+  // e.g. PhantomJS, iOS7, Android 4.4
+  // (#6466 MutationObserver is unreliable in IE11)
+  let counter = 1
+  const observer = new MutationObserver(flushCallbacks)
+  const textNode = document.createTextNode(String(counter))
+  observer.observe(textNode, {
+    characterData: true
   })
+  timerFunc = () => {
+    counter = (counter + 1) % 2
+    textNode.data = String(counter)
+  }
+  isUsingMicroTask = true
+} else if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {
+  // Fallback to setImmediate.
+  // Techinically it leverages the (macro) task queue,
+  // but it is still a better choice than setTimeout.
+  timerFunc = () => {
+    setImmediate(flushCallbacks)
+  }
+} else {
+  // Fallback to setTimeout.
+  timerFunc = () => {
+    setTimeout(flushCallbacks, 0)
+  }
 }
 
 export function nextTick (cb?: Function, ctx?: Object) {
@@ -102,11 +99,7 @@ export function nextTick (cb?: Function, ctx?: Object) {
   })
   if (!pending) {
     pending = true
-    if (useMacroTask) {
-      macroTimerFunc()
-    } else {
-      microTimerFunc()
-    }
+    timerFunc()
   }
   // $flow-disable-line
   if (!cb && typeof Promise !== 'undefined') {

node_modules/vue/src/core/util/options.js

@@ -2,8 +2,9 @@
 
 import config from '../config'
 import { warn } from './debug'
-import { nativeWatch } from './env'
 import { set } from '../observer/index'
+import { unicodeRegExp } from './lang'
+import { nativeWatch, hasSymbol } from './env'
 
 import {
   ASSET_TYPES,
@@ -48,14 +49,24 @@ if (process.env.NODE_ENV !== 'production') {
 function mergeData (to: Object, from: ?Object): Object {
   if (!from) return to
   let key, toVal, fromVal
-  const keys = Object.keys(from)
+
+  const keys = hasSymbol
+    ? Reflect.ownKeys(from)
+    : Object.keys(from)
+
   for (let i = 0; i < keys.length; i++) {
     key = keys[i]
+    // in case the object is already observed...
+    if (key === '__ob__') continue
     toVal = to[key]
     fromVal = from[key]
     if (!hasOwn(to, key)) {
       set(to, key, fromVal)
-    } else if (isPlainObject(toVal) && isPlainObject(fromVal)) {
+    } else if (
+      toVal !== fromVal &&
+      isPlainObject(toVal) &&
+      isPlainObject(fromVal)
+    ) {
       mergeData(toVal, fromVal)
     }
   }
@@ -136,13 +147,26 @@ function mergeHook (
   parentVal: ?Array<Function>,
   childVal: ?Function | ?Array<Function>
 ): ?Array<Function> {
-  return childVal
+  const res = childVal
     ? parentVal
       ? parentVal.concat(childVal)
       : Array.isArray(childVal)
         ? childVal
         : [childVal]
     : parentVal
+  return res
+    ? dedupeHooks(res)
+    : res
+}
+
+function dedupeHooks (hooks) {
+  const res = []
+  for (let i = 0; i < hooks.length; i++) {
+    if (res.indexOf(hooks[i]) === -1) {
+      res.push(hooks[i])
+    }
+  }
+  return res
 }
 
 LIFECYCLE_HOOKS.forEach(hook => {
@@ -253,11 +277,10 @@ function checkComponents (options: Object) {
 }
 
 export function validateComponentName (name: string) {
-  if (!/^[a-zA-Z][\w-]*$/.test(name)) {
+  if (!new RegExp(`^[a-zA-Z][\\-\\.0-9_${unicodeRegExp.source}]*$`).test(name)) {
     warn(
       'Invalid component name: "' + name + '". Component names ' +
-      'can only contain alphanumeric characters and the hyphen, ' +
-      'and must start with a letter.'
+      'should conform to valid custom element name in html5 specification.'
     )
   }
   if (isBuiltInTag(name) || config.isReservedTag(name)) {
@@ -378,15 +401,22 @@ export function mergeOptions (
   normalizeProps(child, vm)
   normalizeInject(child, vm)
   normalizeDirectives(child)
-  const extendsFrom = child.extends
-  if (extendsFrom) {
-    parent = mergeOptions(parent, extendsFrom, vm)
-  }
-  if (child.mixins) {
-    for (let i = 0, l = child.mixins.length; i < l; i++) {
-      parent = mergeOptions(parent, child.mixins[i], vm)
+
+  // Apply extends and mixins on the child options,
+  // but only if it is a raw options object that isn't
+  // the result of another mergeOptions call.
+  // Only merged options has the _base property.
+  if (!child._base) {
+    if (child.extends) {
+      parent = mergeOptions(parent, child.extends, vm)
+    }
+    if (child.mixins) {
+      for (let i = 0, l = child.mixins.length; i < l; i++) {
+        parent = mergeOptions(parent, child.mixins[i], vm)
+      }
     }
   }
+
   const options = {}
   let key
   for (key in parent) {

node_modules/vue/src/core/util/perf.js

@@ -18,7 +18,7 @@ if (process.env.NODE_ENV !== 'production') {
       perf.measure(name, startTag, endTag)
       perf.clearMarks(startTag)
       perf.clearMarks(endTag)
-      perf.clearMeasures(name)
+      // perf.clearMeasures(name)
     }
   }
 }

node_modules/vue/src/core/util/props.js

@@ -127,11 +127,10 @@ function assertProp (
       valid = assertedType.valid
     }
   }
+
   if (!valid) {
     warn(
-      `Invalid prop: type check failed for prop "${name}".` +
-      ` Expected ${expectedTypes.map(capitalize).join(', ')}` +
-      `, got ${toRawType(value)}.`,
+      getInvalidTypeMessage(name, value, expectedTypes),
       vm
     )
     return
@@ -200,3 +199,43 @@ function getTypeIndex (type, expectedTypes): number {
   }
   return -1
 }
+
+function getInvalidTypeMessage (name, value, expectedTypes) {
+  let message = `Invalid prop: type check failed for prop "${name}".` +
+    ` Expected ${expectedTypes.map(capitalize).join(', ')}`
+  const expectedType = expectedTypes[0]
+  const receivedType = toRawType(value)
+  const expectedValue = styleValue(value, expectedType)
+  const receivedValue = styleValue(value, receivedType)
+  // check if we need to specify expected value
+  if (expectedTypes.length === 1 &&
+      isExplicable(expectedType) &&
+      !isBoolean(expectedType, receivedType)) {
+    message += ` with value ${expectedValue}`
+  }
+  message += `, got ${receivedType} `
+  // check if we need to specify received value
+  if (isExplicable(receivedType)) {
+    message += `with value ${receivedValue}.`
+  }
+  return message
+}
+
+function styleValue (value, type) {
+  if (type === 'String') {
+    return `"${value}"`
+  } else if (type === 'Number') {
+    return `${Number(value)}`
+  } else {
+    return `${value}`
+  }
+}
+
+function isExplicable (value) {
+  const explicitTypes = ['string', 'number', 'boolean']
+  return explicitTypes.some(elem => value.toLowerCase() === elem)
+}
+
+function isBoolean (...args) {
+  return args.some(elem => elem.toLowerCase() === 'boolean')
+}