switch to vuepress

1 files changed, 95 insertions, 0 deletions

diff --git a/node_modules/vue/src/core/util/env.js b/node_modules/vue/src/core/util/env.js
new file mode 100644
index 00000000..07cadd9c
--- /dev/null
+++ b/node_modules/vue/src/core/util/env.js
@@ -0,0 +1,95 @@
+/* @flow */
+
+// can we use __proto__?
+export const hasProto = '__proto__' in {}
+
+// Browser environment sniffing
+export const inBrowser = typeof window !== 'undefined'
+export const inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform
+export const weexPlatform = inWeex && WXEnvironment.platform.toLowerCase()
+export const UA = inBrowser && window.navigator.userAgent.toLowerCase()
+export const isIE = UA && /msie|trident/.test(UA)
+export const isIE9 = UA && UA.indexOf('msie 9.0') > 0
+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
+
+// Firefox has a "watch" function on Object.prototype...
+export const nativeWatch = ({}).watch
+
+export let supportsPassive = false
+if (inBrowser) {
+  try {
+    const opts = {}
+    Object.defineProperty(opts, 'passive', ({
+      get () {
+        /* istanbul ignore next */
+        supportsPassive = true
+      }
+    }: Object)) // 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
+let _isServer
+export const isServerRendering = () => {
+  if (_isServer === undefined) {
+    /* istanbul ignore if */
+    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'
+    } else {
+      _isServer = false
+    }
+  }
+  return _isServer
+}
+
+// detect devtools
+export const devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__
+
+/* istanbul ignore next */
+export function isNative (Ctor: any): boolean {
+  return typeof Ctor === 'function' && /native code/.test(Ctor.toString())
+}
+
+export const hasSymbol =
+  typeof Symbol !== 'undefined' && isNative(Symbol) &&
+  typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys)
+
+let _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 = class Set implements SimpleSet {
+    set: Object;
+    constructor () {
+      this.set = Object.create(null)
+    }
+    has (key: string | number) {
+      return this.set[key] === true
+    }
+    add (key: string | number) {
+      this.set[key] = true
+    }
+    clear () {
+      this.set = Object.create(null)
+    }
+  }
+}
+
+interface SimpleSet {
+  has(key: string | number): boolean;
+  add(key: string | number): mixed;
+  clear(): void;
+}
+
+export { _Set }
+export type { SimpleSet }