fix(dev): allow performance marking in production

close #11775

Similar to devtools, `Vue.config.devtools` is enabled by default for development and disabled by default for production.  However, the developer can choose to override that behavior (for example, for debugging) by manually setting `Vue.config.devtools = true`.  However, this same lenience is not afforded to `Vue.config.performance`.  Even if explicitly enabling it, the developer's setting will be overridden by Vue in production.

This commit brings `Vue.config.performance` in line with `Vue.config.devtools`, by disabling it by default in production, but gives the developer the ability to explicitly enable it; for example, for debugging performance issues.

Author: vegerot

packages/weex-vue-framework/factory.js

@@ -4236,7 +4236,7 @@ function mountComponent (
 
   var updateComponent;
   /* istanbul ignore if */
-  if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
+  if (config.performance && mark) {
     updateComponent = function () {
       var name = vm._name;
       var id = vm._uid;
@@ -5161,7 +5161,7 @@ function initMixin (Vue) {
 
     var startTag, endTag;
     /* istanbul ignore if */
-    if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
+    if (config.performance && mark) {
       startTag = "vue-perf-start:" + (vm._uid);
       endTag = "vue-perf-end:" + (vm._uid);
       mark(startTag);
@@ -5200,7 +5200,7 @@ function initMixin (Vue) {
     callHook(vm, 'created');
 
     /* istanbul ignore if */
-    if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
+    if (config.performance && mark) {
       vm._name = formatComponentName(vm, false);
       mark(endTag);
       measure(("vue " + (vm._name) + " init"), startTag, endTag);

src/core/instance/init.js

@@ -20,7 +20,7 @@ export function initMixin (Vue: Class<Component>) {
 
     let startTag, endTag
     /* istanbul ignore if */
-    if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
+    if (config.performance && mark) {
       startTag = `vue-perf-start:${vm._uid}`
       endTag = `vue-perf-end:${vm._uid}`
       mark(startTag)
@@ -59,7 +59,7 @@ export function initMixin (Vue: Class<Component>) {
     callHook(vm, 'created')
 
     /* istanbul ignore if */
-    if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
+    if (config.performance && mark) {
       vm._name = formatComponentName(vm, false)
       mark(endTag)
       measure(`vue ${vm._name} init`, startTag, endTag)

src/core/instance/lifecycle.js

@@ -168,7 +168,7 @@ export function mountComponent (
 
   let updateComponent
   /* istanbul ignore if */
-  if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
+  if (config.performance && mark) {
     updateComponent = () => {
       const name = vm._name
       const id = vm._uid

src/platforms/web/entry-runtime-with-compiler.js

@@ -58,7 +58,7 @@ Vue.prototype.$mount = function (
     }
     if (template) {
       /* istanbul ignore if */
-      if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
+      if (config.performance && mark) {
         mark('compile')
       }
 
@@ -73,7 +73,7 @@ Vue.prototype.$mount = function (
       options.staticRenderFns = staticRenderFns
 
       /* istanbul ignore if */
-      if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
+      if (config.performance && mark) {
         mark('compile end')
         measure(`vue ${this._name} compile`, 'compile', 'compile end')
       }