ionic3 启动报错：npm ERR! missing script: start

Question

抱歉各位！
一起乌龙事件。这阵子一起学angular和ionic，结果是ionic项目我执行的npm run start命令……

前天还正常，我并没有删除什么东西。
缺少start如何操作呢？
日志没搞懂，麻烦高手指点一下！

日志如下：

0 info it worked if it ends with ok
1 verbose cli [ 'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli   'C:\\Users\\***.yang\\AppData\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli   'run',
1 verbose cli   'start' ]
2 info using npm@4.6.1
3 info using node@v6.12.2
4 verbose stack Error: missing script: start
4 verbose stack     at run (C:\Users\***.yang\AppData\Roaming\npm\node_modules\npm\lib\run-script.js:151:19)
4 verbose stack     at C:\Users\***.yang\AppData\Roaming\npm\node_modules\npm\lib\run-script.js:61:5
4 verbose stack     at C:\Users\***.yang\AppData\Roaming\npm\node_modules\npm\node_modules\read-package-json\read-json.js:356:5
4 verbose stack     at checkBinReferences_ (C:\Users\***.yang\AppData\Roaming\npm\node_modules\npm\node_modules\read-package-json\read-json.js:320:45)
4 verbose stack     at final (C:\Users\***.yang\AppData\Roaming\npm\node_modules\npm\node_modules\read-package-json\read-json.js:354:3)
4 verbose stack     at then (C:\Users\***.yang\AppData\Roaming\npm\node_modules\npm\node_modules\read-package-json\read-json.js:124:5)
4 verbose stack     at C:\Users\***.yang\AppData\Roaming\npm\node_modules\npm\node_modules\read-package-json\read-json.js:243:12
4 verbose stack     at C:\Users\***.yang\AppData\Roaming\npm\node_modules\npm\node_modules\graceful-fs\graceful-fs.js:78:16
4 verbose stack     at tryToString (fs.js:457:3)
4 verbose stack     at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:444:12)
5 verbose cwd E:\Ionic3Demo\BaseMaster
6 verbose Windows_NT 6.1.7601
7 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\***.yang\\AppData\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js" "run" "start"
8 verbose node v6.12.2
9 verbose npm  v4.6.1
10 error missing script: start
11 verbose exit [ 1, true ]

Answer 1

抱歉各位！
一起乌龙事件。这阵子一起学angular和ionic，结果是ionic项目我执行的npm run start命令……