创建vue-cli3.0项目首先安装  npm install -g @vue/cli 
然后vue create 项目名称

jiangyanxias-MacBook-Air:~ jyx$ vue create vue-cli3-project
/Users/jyx/.nvm/versions/node/v10.15.3/lib/node_modules/@vue/cli/node_modules/_vue-template-compiler@2.6.10@vue-template-compiler/index.js:10
  throw new Error(
  ^

Error:

Vue packages version mismatch:

- vue@2.6.9 (/Users/jyx/node_modules/vue/dist/vue.runtime.common.js)
- vue-template-compiler@2.6.10 (/Users/jyx/.nvm/versions/node/v10.15.3/lib/node_modules/@vue/cli/node_modules/_vue-template-compiler@2.6.10@vue-template-compiler/package.json)

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.

    at Object.<anonymous> (/Users/jyx/.nvm/versions/node/v10.15.3/lib/node_modules/@vue/cli/node_modules/_vue-template-compiler@2.6.10@vue-template-compiler/index.js:10:9)
    at Module._compile (internal/modules/cjs/loader.js:701:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:712:10)
    at Module.load (internal/modules/cjs/loader.js:600:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:539:12)
    at Function.Module._load (internal/modules/cjs/loader.js:531:3)
    at Module.require (internal/modules/cjs/loader.js:637:17)
    at require (internal/modules/cjs/helpers.js:22:18)
    at Object.<anonymous> (/Users/jyx/.nvm/versions/node/v10.15.3/lib/node_modules/@vue/cli/node_modules/_vue-jscodeshift-adapter@2.0.2@vue-jscodeshift-adapter/src/parse-sfc.js:1:80)
    at Module._compile (internal/modules/cjs/loader.js:701:30)

我们主要看下面这句话就可以了，已经明确告诉你这两个版本不一样，需要你去做更新。

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.

 

解决方法

npm install
npm update

 

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