.eslintrc.json

{
  "$schema": "https://json.schemastore.org/eslintrc",
  "root": true,
  "plugins": ["prettier", "import", "promise"],
  "ignorePatterns": ["node_modules/", "dist/"],
  "parserOptions": { "ecmaVersion": 2020 },
  "extends": [
    // extends mean shareable config from devDependencies that community have created or recommended
    // default
    "eslint:recommended", //@eslint/js
    "plugin:promise/recommended", //eslint-plugin-promise
    "plugin:n/recommended", //eslint-plugin-n
    "plugin:import/recommended", //eslint-plugin-import
    "prettier" //eslint-CONFIG-prettier === this config only turns **rules** key below off (turn off eslint rules that conflict with prettier), turn on prettier/prettier rules
  ],
  "rules": {
    // extends mean shareable config from devDependencies that community have created or recommended
    // default
    "no-unused-vars": "warn",
    // prettier
    "prettier/prettier": [
      "warn",
      {
        "usePrettierrc": true
      }
    ]
  }
}