VSCode - editor.codeActionsOnSave - source.fixAll.eslint - true for errors, false for warnings

I want VS Code to fix all linting errors on save, but ignore warnings.

This rule fixes everything it can on save:

    "editor.codeActionsOnSave": {
        "source.fixAll.eslint": true
    },

.eslintrc.js:

    rules: {
        'react/self-closing-comp':
            process.env.NODE_ENV === 'production'
                ? 'error'
                : 'warn',

But I want it ignore warnings.

How can I do that?