更新后出现离子发球错误

Question

我正在构建一个应用程序，它即将完成，在更新为ionic 2时，它开始给我这个错误：

/Users/Raz/Work/Ionic 2/My-World/node_modules/.bin/ionic-app-scripts: line 1: ../@ionic/app-scripts/bin/ionic-app-scripts.js: No such file or directory

    npm ERR! Darwin 16.1.0
    npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "run" "ionic:serve" "--" "--v2" "--lab" "--address" "0.0.0.0" "--port" "8100" "--livereload-port" "35729"
    npm ERR! node v7.4.0
    npm ERR! npm  v4.0.5
    npm ERR! file sh
    npm ERR! code ELIFECYCLE
    npm ERR! errno ENOENT
    npm ERR! syscall spawn
    npm ERR! ionic-hello-world@ ionic:serve: `ionic-app-scripts serve "--v2" "--lab" "--address" "0.0.0.0" "--port" "8100" "--livereload-port" "35729"`
    npm ERR! spawn ENOENT
    npm ERR! 
    npm ERR! Failed at the ionic-hello-world@ ionic:serve script 'ionic-app-scripts serve "--v2" "--lab" "--address" "0.0.0.0" "--port" "8100" "--livereload-port" "35729"'.
    npm ERR! Make sure you have the latest version of node.js and npm installed.
    npm ERR! If you do, this is most likely a problem with the ionic-hello-world package,
    npm ERR! not with npm itself.
    npm ERR! Tell the author that this fails on your system:
    npm ERR!     ionic-app-scripts serve "--v2" "--lab" "--address" "0.0.0.0" "--port" "8100" "--livereload-port" "35729"
    npm ERR! You can get information on how to open an issue for this project with:
    npm ERR!     npm bugs ionic-hello-world
    npm ERR! Or if that isn't available, you can get their info via:
    npm ERR!     npm owner ls ionic-hello-world
    npm ERR! There is likely additional logging output above.

    npm ERR! Please include the following file with any support request:
    npm ERR!     /Users/Raz/Work/Ionic 2/My-World/npm-debug.log
    There was an error serving your Ionic application: There was an error with the spawned command: serve

我更新了Npm，node和cordova，仍然存在问题：

Cordova CLI: 6.1.1 
Ionic Framework Version: 2.0.0
Ionic CLI Version: 2.2.1
Ionic App Lib Version: 2.2.0
Ionic App Scripts Version: 1.0.0
ios-deploy version: 1.9.0 
ios-sim version: 5.0.8 
OS: macOS Sierra
Node Version: v7.4.0
Xcode version: Xcode 8.1 Build version 8B62

我在其他机器上也做了同样的事情，结果也一样，看来问题可能出在离子本身而不是npm上。

Answer 1

尝试清除项目中的node_modules文件夹。

运行npm install

这是解决大多数package.json更改问题的第一步。

Answer 2

尝试更新您的Cordova CLI版本： npm install -g cordova@latest至npm install -g cordova@latest版本6.5.0。 我认为此框架的最新版本应与最新版本的cordova一起运行。