angular2 after installing bootstrap 4.0.0alpha popper.js issue

Question

I am working on angular2 project, i installed bootstrap using npm install bootstrap@4.0.0-beta.3

and then i have this problem ERROR in ./~/bootstrap/dist/js/bootstrap.js

Module not found: Error: Can't resolve 'popper.js' in 'C:\\Users\\Bashar\\Documents\\mont\\saleapp\\node_modules\\bootstrap\\dist\\js' @ ./~/bootstrap/dist/js/bootstrap.js 7:100-120 @ ./ClientApp/boot.browser.ts @ multi event-source-polyfill webpack-hot-middleware/client?path=__webpack_hmr&dynamicPublicPath=true ./ClientApp/boot.browser.ts

Answer 1

I solved the problem by installing popper.js by the following command:

npm install popper.js --save