ESLint 配置错误:ReferenceError: prettier is not defined 解决方案
问题描述
在使用 pnpm lint
运行 ESLint 时,出现以下错误:
Oops! Something went wrong! :(
ESLint: 9.31.0
ReferenceError: prettier is not defined
该错误导致 ESLint 无法正确执行代码格式检查,但 不会影响项目的实际运行(如 pnpm dev
或 pnpm build
)。
错误原因
eslint-plugin-prettier
未正确导入在
eslint.config.js
中使用了prettier/prettier
规则,但没有正确引入eslint-plugin-prettier
。
ESLint v9+ 的 Flat Config 格式兼容性问题
旧版 ESLint 的配置方式(如
.eslintrc.js
)与新版eslint.config.js
不兼容。
解决方案
方法 1:修复 eslint.config.js
(推荐)
1. 安装必要依赖
pnpm add -D eslint-plugin-prettier prettier
2. 修改 eslint.config.js
import { defineConfig } from "eslint/config";
import globals from "globals";
import js from "@eslint/js";
import pluginVue from "eslint-plugin-vue";
import prettierPlugin from "eslint-plugin-prettier"; // 正确导入 Prettier 插件export default defineConfig([{files: ["**/*.{js,mjs,jsx,vue}"],ignores: ["**/dist/**", "**/dist-ssr/**", "**/coverage/**"],},{languageOptions: {globals: {...globals.browser,},},},js.configs.recommended,...pluginVue.configs["flat/essential"],{plugins: {prettier: prettierPlugin, // 注册 Prettier 插件},rules: {"prettier/prettier": ["warn",{singleQuote: true,semi: false,printWidth: 60,trailingComma: "none",endOfLine: "auto",},],"vue/multi-word-component-names": ["warn",{ ignores: ["index"] },],"vue/no-setup-props-destructure": "off","no-undef": "error",},},
]);
3. 重新运行 ESLint
pnpm lint
方法 2:降级 ESLint(兼容旧配置)
如果不想使用 ESLint v9+ 的 Flat Config,可以降级到 ESLint v8:
pnpm add eslint@8.56.0 -D
然后改用 .eslintrc.js
配置(旧版格式):
module.exports = {extends: ["eslint:recommended","plugin:vue/essential","plugin:prettier/recommended", // 使用 Prettier 推荐配置],rules: {"prettier/prettier": ["warn",{singleQuote: true,semi: false,printWidth: 60,trailingComma: "none",endOfLine: "auto",},],"vue/multi-word-component-names": ["warn",{ ignores: ["index"] },],"vue/no-setup-props-destructure": "off","no-undef": "error",},
};