javascript - 'const' is available in ES6 (use 'esversion: 6') - Stack Overflow

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I am using eslint-config-airbnb-base npm package for eslint...I just created .eslintrc.json file and also setup eslint package in my IDE ..the problem is that I am getting warning for const about ES6 can any one please provide me the details that how I can config ES6 for const I am getting this warning "const' is available in ES6 (use 'esversion: 6') or Mozilla JS extensions (use moz). (W104)jshint(W104)"... please Provide me details that how to config for this warning..thank you

.eslintrc.json file

{
    "extends": "airbnb-base"
}

I am using eslint-config-airbnb-base npm package for eslint...I just created .eslintrc.json file and also setup eslint package in my IDE ..the problem is that I am getting warning for const about ES6 can any one please provide me the details that how I can config ES6 for const I am getting this warning "const' is available in ES6 (use 'esversion: 6') or Mozilla JS extensions (use moz). (W104)jshint(W104)"... please Provide me details that how to config for this warning..thank you

.eslintrc.json file

{
    "extends": "airbnb-base"
}

• javascript
• node.js
• eslint
• eslint-config-airbnb

Share Improve this question Follow edited Oct 14, 2021 at 20:02 TylerH 21.1k7878 gold badges7979 silver badges114114 bronze badges asked Feb 12, 2019 at 9:57 Nisar SaiyedNisar Saiyed 78811 gold badge99 silver badges1818 bronze badges 9

• airbnb-base already enables ES6. Make sure you have the latest version and make sure eslintrc you listed is in effect. – Estus Flask Commented Feb 12, 2019 at 10:14
• The latest airbnb-base version is 13. – Estus Flask Commented Feb 12, 2019 at 10:21
• 13.1.0 version for the same but ...issue is still persist – Nisar Saiyed Commented Feb 12, 2019 at 10:25
• Then the second part, make sure eslintrc you listed is in effect. It should be either one or another. Otherwise you wouldn't have this problem. – Estus Flask Commented Feb 12, 2019 at 10:26
• 1 No, you don't have to. I expect airbnb-base to work out of the box, and the answer already correctly explains how ES6 could be enabled alone, it should work as well. That neither of them don't work suggests that something is wrong on your side. It's impossible to say what exactly it is. There could be another eslintrc file elsewhere that overrides the file you listed. You can start with making syntax mistake in the file and checking if ESLint will plain. You didn't mention anything about IDE, it could be a problem that is specific to it and not ESLint in general. – Estus Flask Commented Feb 12, 2019 at 11:00

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2 Answers 2

Sorted by: Reset to default 5

eslint: Specifying Parser Options

you should add parserOptions to your .eslintrc.json file

{
 "parserOptions": {
    "ecmaVersion": 6
  }
}

In addition to Zaan Chi's answer,

If you want to use ES6 only for a particular file, or dont want to change the eslint json, You can add this ment to the top of the file.

/* jshint esversion: 6 */

Note that if you are using ES6 for your entire project, it is better to add it to the JSON.

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