Why does JSHint throw a warning if I am using const?

Question

This is the error I get when using const:

Answer 1

I got this same warning when using an export statement. I'm using VS Code and used a similar approach to Wenlong Jiang's solution.

1. User Settings

2. JSHint config

3. "jshint.config": {} (Edit)

4. Use double quotes when specifying "esversion"

   Or copy this snippet into User Settings:

   "jshint.options": {
     "esversion": 6,
   }
   

Creating a .jshintrc file isn't necessary if you want to configure the global jshint settings for your editor

Answer 2

If you're using VSCode:

1.

• Go to preferences -> settings (cmd + ,)
• Type jshint.options into the search bar
• Hover over it and click on the pencil icon
• Its now appended on the right side.
• Add "esversion": 6 to the options object.

---

2.

Or simply add this to your user settings:

"jshint.options": {
    "esversion": 6
}

---

[UPDATE] new vscode settings

• Go to preferences -> settings (cmd + ,)
• type jshint into search

• continue with step 2.

Answer 3

For SublimeText 3 on Mac:

1. Create a .jshintrc file in your root directory (or wherever you prefer) and specify the esversion:

    # .jshintrc
    {
      "esversion": 6
    }

2. Reference the pwd of the file you just created in SublimeLinter user settings (Sublime Text > Preference > Package Settings > SublimeLinter > Settings)

    // SublimeLinter Settings - User
    {
      "linters": {
        "jshint": {
          "args": ["--config", "/Users/[your_username]/.jshintrc"]
        }
      }
    }

3. Quit and relaunch SublimeText

Answer 4

When you start using ECMAScript 6 this error thrown by your IDE.

There are two options available:

if you have only one file and want to use the es6 then simply add below line at the top of the file.

/*jshint esversion: 6 */

Or if you have number of js file or you are using any framework(like nodejs express)you can create a new file named .jshintrc in your root directory and add code below in the file:

{
    "esversion": 6
}

If you want to use the es6 version onward for each project you can configure your IDE.

Answer 5

If you are using Grunt configuration, You need to do the following steps

Warning message in Jshint:

Solution:

1. Set the jshint options and map the .jshintrc.js file

2. Create the .jshintrc.js file in that file add the following code

{  
  "esversion": 6  
} 

After configured this, Run again It will skip the warning,

Answer 6

Create .jshintrc file in the root dir and add there the latest js version: "esversion": 9 and asi version: "asi": true (it will help you to avoid using semicolons)

{
    "esversion": 9,
    "asi": true
}