How enable console log in VUE-CLI during development

Question

I have been trying to figure out how to console.log('whatever') during learning some VueJs development in my methods in order to understand some behaviour of whatever I am doing here.

I understand that there're some questions already asked here and have scoped into ESLINT documentation to try an figure this out... I just can't actually understand what I should do.

My code:

methods: {
    submitData() {
        this.$http.post('https://vue-testing-8a2de.firebaseio.com/data.json', this.user)
                  .then(response => {
                            console.log(response);
                        }, error => {
                            console.log(error)
                        })
    }
}

This is the error on ESLINT:

Failed to compile.

./src/App.vue
Module Error (from ./node_modules/eslint-loader/index.js):
error: Unexpected console statement (no-console) at src/App.vue:35:22:
  33 | this.$http.post('https://vue-testing-8a2de.firebaseio.com/data.json',this.user)
  34 |           .then(response => {
> 35 |                      console.log(response);
     |                      ^
  36 |                  }, error => {
  37 |                      console.log(error)
  38 |                  })


error: Unexpected console statement (no-console) at src/App.vue:37:22:
  35 |                      console.log(response);
  36 |                  }, error => {
> 37 |                      console.log(error)
     |                      ^
  38 |                  })
  39 |             }
  40 |         }


2 errors found.

I have looked into this website:

• https://eslint.org/docs/rules/no-console

I tried commenting the previous line before console.log:

• /*eslint no-console: "error"*/ (but it doesn't works well)

I need a step by step guide if I need to mess with JSON rules, as I have never done this before.

I am using vue-cli on WebStorm.

Thanks in advance!

Answer 1

Edit package.json and in eslintConfig property add

"eslintConfig": { // don't add this, it's already there
    // there's stuff here
    "rules": { // find the rules property
    // addition starts here
        "no-console": "off"
    // addition ends here
    },
    // and keep what was already here

Now, if you want console.log stripped from production build

Edit vue.config.js

and add

// addition starts here
const TerserPlugin = require('terser-webpack-plugin')
const isProd = process.env.NODE_ENV === 'production'
// addition ends here

module.exports = {
    // addition starts here
    configureWebpack: {
        optimization: {
            minimize: true,
            minimizer: isProd ? [
                new TerserPlugin({
                    terserOptions: {
                        ecma: 6,
                        compress: { drop_console: true },
                        output: { comments: false, beautify: false }
                    }
                })
            ] : []
        }
    },
    // addition ends here
    // and keep what was already here
}