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vue运行报错:SyntaxError: Cannot use import statement outside a module

迎月兮 2022-02-20 阅读 82

vue运行报错:SyntaxError: Cannot use import statement outside a module_debug

PS C:\Users\wangting\Desktop\assets_web_admin\assets_web_admin> npm run dev

> vue-element-admin@4.2.1 dev C:\Users\wangting\Desktop\assets_web_admin\assets_web_admin
> vue-cli-service serve

INFO Starting development server...
10% building 2/2 modules 0 active ERROR SyntaxError: Cannot use import statement outside a module
C:\Users\wangting\Desktop\assets_web_admin\assets_web_admin\mock\index.js:1
import "core-js/modules/es6.regexp.constructor";
^^^^^^

SyntaxError: Cannot use import statement outside a module
at wrapSafe (internal/modules/cjs/loader.js:1072:16)
at Module._compile (internal/modules/cjs/loader.js:1122:27)
at Module._compile (C:\Users\wangting\Desktop\assets_web_admin\assets_web_admin\node_modules\pirates\lib\index.js:99:24)
at Module._extensions..js (internal/modules/cjs/loader.js:1178:10)
at Object.newLoader [as .js] (C:\Users\wangting\Desktop\assets_web_admin\assets_web_admin\node_modules\pirates\lib\index.js:104:7)
at Module.load (internal/modules/cjs/loader.js:1002:32)
at Function.Module._load (internal/modules/cjs/loader.js:901:14)
at Module.require (internal/modules/cjs/loader.js:1044:19)
at require (internal/modules/cjs/helpers.js:77:18)
at registerRoutes (C:\Users\wangting\Desktop\assets_web_admin\assets_web_admin\mock\mock-server.js:11:30)
at Object.module.exports [as before] (C:\Users\wangting\Desktop\assets_web_admin\assets_web_admin\mock\mock-server.js:57:22)
at Object.before (C:\Users\wangting\Desktop\assets_web_admin\assets_web_admin\node_modules\@vue\cli-service\lib\commands\serve.js:165:67)
at Server.setupBeforeFeature (C:\Users\wangting\Desktop\assets_web_admin\assets_web_admin\node_modules\webpack-dev-server\lib\Server.js:455:18)
at Object.before (C:\Users\wangting\Desktop\assets_web_admin\assets_web_admin\node_modules\webpack-dev-server\lib\Server.js:515:16)
at C:\Users\wangting\Desktop\assets_web_admin\assets_web_admin\node_modules\webpack-dev-server\lib\Server.js:584:24
at Array.forEach (<anonymous>)

原来是我在写代码的时候

不小心删掉了这段代码

打开

环境配置.env.development文件

在最后面加上

VUE_CLI_BABEL_TRANSPILE_MODULES = true

这个文件完整的代码如下

还是改一下随手乱动代码的习惯吧~~~

# just a flag
ENV = 'development'

# base api
VUE_APP_BASE_API = '/dev-api'

# vue-cli uses the VUE_CLI_BABEL_TRANSPILE_MODULES environment variable,
# to control whether the babel-plugin-dynamic-import-node plugin is enabled.
# It only does one thing by converting all import() to require().
# This configuration can significantly increase the speed of hot updates,
# when you have a large number of pages.
# Detail: https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/babel-preset-app/index.js

VUE_CLI_BABEL_TRANSPILE_MODULES = true


vue运行报错:SyntaxError: Cannot use import statement outside a module_linux_02


再次执行

npm run dev

即可运行成功了


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