.eslintrc.js

module.exports = {
  extends: [
    "airbnb-base",
    "plugin:@typescript-eslint/recommended",
    "prettier",
    "prettier/@typescript-eslint",
  ],
  plugins: ["@typescript-eslint", "prettier", "@manifoldco/stencil"],
  env: {
    browser: true,
    node: true,
    jest: true,
    es6: true,
  },
  parser: "@typescript-eslint/parser",
  parserOptions: {
    ecmaFeatures: {
      legacyDecorators: true,
      jsx: true,
    },
  },
  settings: {
    "import/parsers": {
      "@typescript-eslint/parser": [".ts", ".tsx"],
    },
    "import/resolver": {
      typescript: {},
    },
  },
  rules: {
    "@manifoldco/stencil/component-prefix": ["error", { prefix: "manifold-" }],
    "@manifoldco/stencil/require-render-decorator": "off",
    "@manifoldco/stencil/restrict-required-props": "error",
    "@typescript-eslint/camelcase": "off",
    "@typescript-eslint/explicit-function-return-type": "off",
    "@typescript-eslint/explicit-member-accessibility": "off",
    "@typescript-eslint/no-inferrable-types": "off",
    "@typescript-eslint/no-unused-vars": "off", // compiler catches these well enough
    "arrow-parens": "off", // let Prettier decide
    camelcase: "off", // underscores are a thing
    "class-methods-use-this": "off", // component lifecycle methods sometimes don't use `this`
    "comma-dangle": [
      "error",
      {
        arrays: "always-multiline",
        exports: "never",
        functions: "never", // function commas are weird
        imports: "always-multiline",
        objects: "always-multiline",
      },
    ],
    curly: ["error", "all"],
    "func-names": "off",
    "function-paren-newline": "off", // let Prettier decide
    "implicit-arrow-linebreak": "off", // let Prettier decide
    "import/extensions": "off", // TypeScript handles this
    "import/no-named-as-default": "off",
    "import/no-extraneous-dependencies": "off", // We need zero deps for npm
    "import/prefer-default-export": "off", // named exports are perfectly fine
    "lines-between-class-members": "off", // class members don’t need that space!
    "max-len": "off", // let Prettier decide
    "no-console": ["error", { allow: ["warn", "error"] }],
    "no-fallthrough": "off",
    "no-irregular-whitespace": "off",
    "object-curly-newline": "off", // let Prettier decide,
    "prettier/prettier": "error",
    "no-return-assign": "off",
  },
};