Module build failed: Module failed because of a eslint warning

eslint 設置 warning 級別，在 開發編譯失敗的原因，報錯如下：

F:\vue-mobile-skeleton>npm run dev

> [email protected] dev F:\vue-mobile-skeleton
> webpack-dev-server --inline --progress --config build/webpack.dev.conf.js

 94% asset optimization

 ERROR  Failed to compile with 1 errors                                                                         22:51:17


 error  in ./src/app.vue

Module build failed: Module failed because of a eslint warning.

  ⚠  http://eslint.org/docs/rules/no-unused-vars  'o' is assigned a value but never used
  src\app.vue:60:7
  const o = 90;
         ^


✘ 1 problem (0 errors, 1 warning)


Warnings:
  1  http://eslint.org/docs/rules/no-unused-vars

 @ ./src/main.js 12:0-28
 @ multi (webpack)-dev-server/client?http://localhost:8080 webpack/hot/dev-server ./src/main.js

Module build failed: Module failed because of a eslint warning的原因，為自己當時即使是eslint 設置 warning 規則，在熱更新都會報錯，無法編譯通過的！ 

解決：

1：把這個沒有使用變數，刪除

2：使用 註釋方式不進行檢測 => // eslint-disable-next-line

3：把  eslint-laoder 的選項設置 fasle 即可；

// 目錄：/build/webpack.base.conf.js 

const createLintingRule = () => ({
    test: /\.(js|vue)$/,
    loader: 'eslint-loader',
    enforce: 'pre',
    include: [resolve('src'), resolve('test')],
    options: {
        formatter: require('eslint-friendly-formatter'),
        emitError:false,
        emitWarning: config.dev.showEslintErrorsInOverlay,
        fix: true,
        failOnError: true,
        //如果有eslint警告，載入器將導致模塊構建失敗。
        //設置 false 即可，去除此檢驗
        failOnWarning: false,
    }
})

但是，還是看個人喜好，若是單單在控制台提示警告也可以，不過我本人不想看到有警告，所以就硬性設為 true 不讓編譯通過，個人喜愛而已！