configure esLint on save

.eslintrc.cjs
/**
 * This is intended to be a basic starting point for linting in your app.
 * It relies on recommended configs out of the box for simplicity, but you can
 * and should modify this configuration to best suit your team's needs.
 */


/** @type {import('eslint').Linter.Config} */
module.exports = {
  root: true,
  parserOptions: {
    ecmaVersion: "latest",
    sourceType: "module",
    ecmaFeatures: {
      jsx: true,
    },
  },
  env: {
    browser: true,
    commonjs: true,
    es6: true,
  },


  // Base config
  extends: [
    "eslint:recommended",
    "plugin:prettier/recommended", // Enables eslint-plugin-prettier and displays prettier errors as ESLint errors.
  ],


  plugins: ["prettier"], // Add prettier as a plugin to apply prettier rules


  overrides: [
    // React
    {
      files: ["**/*.{js,jsx,ts,tsx}"],
      plugins: ["react", "jsx-a11y", "prettier"],
      extends: [
        "plugin:react/recommended",
        "plugin:react/jsx-runtime",
        "plugin:react-hooks/recommended",
        "plugin:jsx-a11y/recommended",
        "plugin:prettier/recommended", // Extends prettier rules
      ],
      settings: {
        react: {
          version: "detect",
        },
        formComponents: ["Form"],
        linkComponents: [
          { name: "Link", linkAttribute: "to" },
          { name: "NavLink", linkAttribute: "to" },
        ],
        "import/resolver": {
          typescript: {},
        },
      },
      rules: {
        "prettier/prettier": "error", // Display prettier issues as ESLint errors
      },
    },


    // Typescript
    {
      files: ["**/*.{ts,tsx}"],
      plugins: ["@typescript-eslint", "import", "prettier"],
      parser: "@typescript-eslint/parser",
      settings: {
        "import/internal-regex": "^~/",
        "import/resolver": {
          node: {
            extensions: [".ts", ".tsx"],
          },
          typescript: {
            alwaysTryTypes: true,
          },
        },
      },
      extends: [
        "plugin:@typescript-eslint/recommended",
        "plugin:import/recommended",
        "plugin:import/typescript",
        "plugin:prettier/recommended", // Extends prettier rules
      ],
      rules: {
        "prettier/prettier": "error", // Display prettier issues as ESLint errors
      },
    },


    // Node
    {
      files: [".eslintrc.cjs"],
      env: {
        node: true,
      },
    },
  ],
};

.vscode/settings.json

{{
  "eslint.run": "onSave",
  "editor.codeActionsOnSave": {
    "source.fixAll.eslint": "always"
  },
  "eslint.validate": [
    "javascript",
    "javascriptreact",
    "typescript",
    "typescriptreact"
  ]
}