✘ 1 problem (1 error, 0 warnings)

Errors:
1 http://eslint.org/docs/rules/no-trailing-spaces

✘ http://eslint.org/docs/rules/no-trailing-spaces Trailing spaces not allowed
src/components/HelloWorld.vue:6:1

^

✘ http://eslint.org/docs/rules/eol-last Newline required at end of file but not found
src/components/HelloWorld.vue:16:10

✘ 2 problems (2 errors, 0 warnings)

Errors:
1 http://eslint.org/docs/rules/eol-last
1 http://eslint.org/docs/rules/no-trailing-spaces

You may use special comments to disable some warnings.
Use // eslint-disable-next-line to ignore the next line.
Use /* eslint-disable */ to ignore all warnings in a file.

解决办法:

在 my-project/config/index.js里有配置:

useEslint: true, // 改为false即可。

然后重新执行 cnpm run dev

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