Eslint config for Svelte example

.eslintrc

module.exports = {
  parserOptions: {
    ecmaVersion: 2019,
    sourceType: 'module'
  },
  env: {
    es6: true,
    browser: true
  },
  extends: [
    'eslint:recommended',
    'plugin:import/errors',
    'plugin:import/warnings',
  ],
  overrides: [
    {
      files: [ '*.svelte' ],
      plugins: [ 'svelte3' ],
      processor: 'svelte3/svelte3',
    },
    Object.assign(
      {
        files: [ '**/*.spec.js' ],
        env: { jest: true },
        plugins: [ 'jest' ],
      },
      require('eslint-plugin-jest').configs.recommended
    )
  ],
  rules: {
    // ...
  },
  settings: {
    'svelte3/ignore-styles': attributes => attributes.lang && attributes.lang.includes('scss')
  },
};