"eslint.format.enable": true basically tells VSCode to use ESlint as a formatter for files that are validated by ESLint and to make sure it always uses your default favourite Prettier formatter, you use "editor.defaultFormatter": "esbenp.prettier-vscode" as there can be multiple formatters installed.

You can add extension-level configuration in the VSCode settings.json file. Open this through the command palette:

• Press F1
• Type "user settings"
• Press Enter

Add the rules in eslint.options like this, according to the ESLint documentation:

// Place your settings in this file to overwrite the default settings
{
    "eslint.options": {
        "rules": {
            "quotes": [2, "double"]
        }
    }
}

You can add this to workspace-level configuration by opening "workspace settings" through the command palette. This will create a ./vscode/settings.json file in your project.

The eslint configuration is probably stored in the settings.json file. To open it simply press Ctrl+Shift+P and type: Preferences: Open Settings (JSON). You should be able to copy everything in eslint.options to the eslintrc file and it should work.

The solution is to define an overrideConfigFile option to point to the location of the ESLint configuration file in the workspace in the settings.json like so:

{
    "eslint.options": { "overrideConfigFile": "./path/to/eslint.config.js" }
}

Since ESLint v8.x, the ESLint extension in VSCode uses the ESLint Class API to "[...] configure how ESLint is started". The extension documents that "[...] to point to a custom .eslintrc.json file using the new ESLint API" is as shown above.

For good measure, since the configuration file used is the new flat config file, the eslint.useFlatConfig setting can also be explicitly set to true. In the settings.json:

{
    "eslint.useFlatConfig": true
}

Since version 3.0.5 of the extension, the activation of this setting works like this:

• 8.57.0 <= ESLint version < 9.x: setting is honored and defaults to false.
• 9.0.0 <= ESLint version < 10.x: settings is honored and defaults to true.