settings.json 配置如下
{
    "editor.formatOnSave": true,
    "vetur.experimental.templateInterpolationService": true,
    "editor.codeActionsOnSave": {
        "source.fixAll.eslint": true
    }
}

.prettierrc 配置如下
{
    "semi": false, 
    "singleQuote": true,
    "arrowParens": "always",
    "trailingComma": "all"
}

package.json
  "devDependencies": {
    "@typescript-eslint/eslint-plugin": "^2.33.0",
    "@typescript-eslint/parser": "^2.33.0",
    "@vue/cli-plugin-babel": "~4.5.0",
    "@vue/cli-plugin-eslint": "~4.5.0",
    "@vue/cli-plugin-router": "~4.5.0",
    "@vue/cli-plugin-typescript": "~4.5.0",
    "@vue/cli-plugin-vuex": "~4.5.0",
    "@vue/cli-service": "~4.5.0",
    "@vue/compiler-sfc": "^3.0.0",
    "@vue/eslint-config-prettier": "^6.0.0",
    "@vue/eslint-config-typescript": "^5.0.2",
    "eslint": "^6.7.2",
    "eslint-plugin-prettier": "^3.1.3",
    "eslint-plugin-vue": "^7.0.0-0",
    "lint-staged": "^9.5.0",
    "prettier": "^1.19.1",
    "typescript": "~3.9.3"
  },