.eslintrc.js

const OFF = 0;
const WARN = 1;
const ERROR = 2;

module.exports = {
    env: {
        es6: true,
        jest: true,
        jasmine: true,
        "shared-node-browser": true,
    },
    globals: {
        fetch: true,
        device: true,
        element: true,
        by: true,
        Response: true,
    },
    extends: ["@react-native-community", "airbnb", "prettier", "prettier/react"],
    parserOptions: {
        ecmaFeatures: {
            impliedStrict: true,
            jsx: true,
        },
        ecmaVersion: 2018,
        sourceType: "module",
    },
    plugins: ["prettier", "react", "react-native-a11y", "unicorn"],
    rules: {
        "no-unused-vars": OFF,
        "no-use-before-define": OFF,
        "class-methods-use-this": OFF,
        "no-nested-ternary": OFF,
        "comma-dangle": [
            ERROR,
            {
                arrays: "always-multiline",
                objects: "always-multiline",
                imports: "always-multiline",
                exports: "always-multiline",
                functions: "never",
            },
        ],
        "default-case": OFF,
        eqeqeq: [ERROR, "always", {null: "ignore"}],
        "max-classes-per-file": OFF,
        "no-async-promise-executor": WARN,
        "no-case-declarations": OFF,
        "no-extra-boolean-cast": OFF,
        "no-underscore-dangle": OFF,
        "prefer-promise-reject-errors": OFF,
        radix: WARN,
        "sort-imports": OFF,

        // eslint-plugin-import
        "import/first": OFF,
        "import/prefer-default-export": OFF,
        "import/no-cycle": WARN,
        "import/no-extraneous-dependencies": [
            ERROR,
            {
                devDependencies: [
                    "**/{shell,config,storybook}/**", // nfl
                    "**/test/**", // tape, common npm pattern
                    "**/__stor{y,ies}__/**", // storybook
                    "**/story.{js,jsx}", // storybook
                    "**/tests/**", // also common npm pattern
                    "**/specs/**", // mocha, rspec-like pattern
                    "**/__{tests,snapshots}__/**", // jest pattern
                    "test.{js,jsx}", // repos with a single test file
                    "test-*.{js,jsx}", // repos with multiple top-level test files
                    "**/*.{test,spec}.{js,jsx}", // tests where the extension denotes that it is a test
                    "**/e2e/**", // detox e2e integration setup
                    "**/jest.config.js", // jest config
                    "**/webpack.config.js", // webpack config
                    "**/webpack.config.*.js", // webpack config
                    "**/rollup.config.js", // rollup config
                    "**/rollup.config.*.js", // rollup config
                    "**/gulpfile.js", // gulp config
                    "**/gulpfile.*.js", // gulp config
                    "**/Gruntfile{,.js}", // grunt config
                    "**/protractor.conf.js", // protractor config
                    "**/protractor.conf.*.js", // protractor config
                    "**/*.config.js", // React Native config
                ],
                optionalDependencies: false,
            },
        ],
        "import/order": OFF,

        // eslint-plugin-jsx-a11y
        "jsx-a11y/accessible-emoji": OFF,

        // eslint-plugin-react
        "react/default-props-match-prop-types": OFF,
        "react/no-children-prop": OFF,
        "react/destructuring-assignment": OFF,
        "react/no-unescaped-entities": OFF,
        "react/no-unused-prop-types": OFF,
        "react/jsx-boolean-value": OFF,
        "react/jsx-filename-extension": OFF,
        "react/jsx-props-no-spreading": OFF,
        // Enforce props alphabetical sorting
        // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-sort-props.md
        "react/jsx-sort-props": [
            ERROR,
            {
                ignoreCase: true,
                callbacksLast: true,
                shorthandFirst: true,
            },
        ],
        "react/require-default-props": OFF,
        "react/sort-comp": OFF,
        "react/state-in-constructor": OFF,
        "react/static-property-placement": OFF,

        "react-hooks/rules-of-hooks": WARN,

        // eslint-plugin-react-native-a11y
        "react-native-a11y/has-accessibility-props": WARN,
        "react-native-a11y/has-valid-accessibility-component-type": WARN,
        "react-native-a11y/has-valid-accessibility-traits": WARN,
        "react-native-a11y/has-valid-important-for-accessibility": WARN,
        "react-native-a11y/no-nested-touchables": WARN,

        // eslint-plugin-prettier
        "prettier/prettier": [
            ERROR,
            {
                printWidth: 90,
                tabWidth: 4,
                singleQuote: false,
                trailingComma: "es5",
                bracketSpacing: false,
                semi: true,
                useTabs: false,
                jsxBracketSameLine: false,
            },
        ],

        // eslint-plugin-unicorn
        "unicorn/no-abusive-eslint-disable": ERROR,

        // LEGACY
        yoda: [ERROR, "never"],
        "no-cond-assign": [ERROR, "except-parens"],
    },
};