.eslintrc.js

module.exports = {
  root: true,
  env: {
    node: true,
  },
  extends: [
    "plugin:vue/recommended",
    "plugin:vue/vue3-recommended",
    "@vue/prettier",
    "@vue/typescript",
  ],
  rules: {
    "no-console": "error",
    "no-debugger": "error",
    "prettier/prettier": "off",
    "no-extra-boolean-cast": "off",
    "vue/no-v-html": "off",
    // good to have
    "@typescript-eslint/prefer-string-starts-ends-with": "error",
    "@typescript-eslint/await-thenable": "error",
    // consistency
    "@typescript-eslint/consistent-type-definitions": ["error", "type"],
    "@typescript-eslint/consistent-type-assertions": ["error", { assertionStyle: "as" }],
    // vue 3 only
    "vue/no-deprecated-v-on-native-modifier": "off",
    "vue/require-explicit-emits": "off",
  },
  ignorePatterns: ["jest.*.ts"],
  overrides: [
    {
      files: "*.js",
      rules: {
        "@typescript-eslint/prefer-string-starts-ends-with": "off",
        "@typescript-eslint/await-thenable": "off",
      },
      parserOptions: {
        parser: "babel-eslint",
      },
    },
    {
      files: ["src/**/*.test.ts"],
      env: {
        jest: true,
      },
    },
  ],
  parserOptions: {
    parser: "@typescript-eslint/parser",
    warnOnUnsupportedTypeScriptVersion: false,
    project: "./tsconfig.json",
  },
}