ERROR in

Vue packages version mismatch:

This may cause things to work incorrectly. Make sure to use the same version for both.

If you are using vue-loader@>=10.0, simply update vue-template-compiler. If you are using vue-loader@<10.0 or vueify, re-installing vue-loader/vueify should bump vue-template-compiler to the latest.

@ ./main.js 15:11-27

卧槽，简直了，只要我import app.vue 就报错，无论我app.vue有木有写东西，都报错，我也是醉了

回来发现，原来是我的package.json里面忘记依赖了vue-loader,好吧，我赶紧依赖了一下，结果又报错，说我vue-loader和vue-template-complier版本不一致

我赶紧把版本改成一致的，然后，npm install，结果还是这么报错。

最后上了大招，直接在node-modules文件夹下面把不一致的vue-loader和vue-template-complier文件夹干掉之后，再重新npm install 终于ok了！！！

{  "name": "vue-demo",  "version": "1.0.0",  "description": "",  "main": "index.js",  "scripts": {    "test": "echo \"Error: no test specified\" && exit 1"  },  "author": "",  "license": "ISC",  "devDependencies": {    "babel": "^6.5.2",    "babel-core": "^6.18.2",    "babel-loader": "^6.2.8",    "babel-preset-es2015": "^6.18.0",    "css-loader": "^0.26.0",    "extract-text-webpack-plugin": "^1.0.1",    "less": "^2.7.1",    "less-loader": "^2.2.3",    "style-loader": "^0.13.1",    "vue": "2.1.4",    "vue-loader": "10.0.0",    "vue-router": "latest",    "vue-template-compiler": "2.1.4",    "webpack": "^1.13.3"  },  "dependencies": {    "webpack": "^1.13.3"  }}