E:\A Prem World\Team_Work_Tasks\Anjali\Anjali_20160524\QuizApp_20160524_01_Anj>ionic serve -l
(node:4772) fs: re-evaluating native module sources is not supported. If you are using the graceful-fs module, please update it to a more recent version.
There is an error in your gulpfile:
Error: Node Sass does not yet support your current environment: Windows 64-bit with false
For more information on which environments are supported please see:
TODO URL
    at Object.<anonymous> (E:\A Prem World\Team_Work_Tasks\Anjali\Anjali_20160524\QuizApp_20160524_01_Anj\node_modules\node-sass\lib\index.js:12:11)
    at Module._compile (module.js:541:32)
    at Object.Module._extensions..js (module.js:550:10)
    at Module.load (module.js:456:32)
    at tryModuleLoad (module.js:415:12)
    at Function.Module._load (module.js:407:3)
    at Module.require (module.js:466:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (E:\A Prem World\Team_Work_Tasks\Anjali\Anjali_20160524\QuizApp_20160524_01_Anj\node_modules\gulp-sass\index.js:187:21)
    at Module._compile (module.js:541:32)

当前回答

我安装了最新的版本,在写这篇评论的时候是5.0.0

NPM安装node-sass@latest

其他回答

删除node_modules并运行npm install为我修复了这些错误。

其他人说:npm重建node-sass或npm审计修复可能会有帮助。

下面的代码适合我。

npm uninstall node-sass --legacy-peer-deps
npm install node-sass --legacy-peer-deps

遇到这个问题,npm i @ionic/app-scripts是唯一工作的东西。

需要将节点降级至14版本:

npm install -g n
n 14
# if one of the commands does not pass, you may need to use sudo
sudo npm install -g n
sudo n 14

命令npm uninstall node-sass && npm install node-sass对我没有帮助,但在安装Python 2.7和Visual c++构建工具后,我删除了node_modules文件夹,从管理员打开CMD并运行npm install——msvs_version=2015。安装成功!

这条评论和这个链接也会有所帮助。