typescript - How to use bootstrap 4 in angular 2?

Question

I'm building an angular 2 app written in typescript. It would use the bootstrap 4 framework in combination with some custom theming, is this possible?

The "ng2-bootstrap" npm package is not working as it doesn't allow me to use the bootstrap css classes, instead it provides custom components. (http://github.com/valor-software/ng2-bootstrap)

In my angular 2 project I'm using sass, would it be possible to build bootstrap 4 from source as it is also using sass for styling?

Answer 1

Bootstrap4 alpha for Angular2 CLI (also works for Angular4 CLI)

If you are using the angular2 cli/angular 4 cli do following:

npm i bootstrap@next --save

This will add bootstrap 4 to your project.

Next go to your src/style.scss or src/style.css file and import bootstrap there:

For style.css

/* You can add global styles to this file, and also import other style files */
@import "../node_modules/bootstrap/dist/css/bootstrap.min.css";

For style.scss

/* You can add global styles to this file, and also import other style files */
@import "../node_modules/bootstrap/scss/bootstrap";

If you are using scss, make sure you change your default styling to scss in .angular-cli.json:

  "defaults": {
    "styleExt": "scss",
    "component": {}
  }

Bootstrap JS Components

For Bootstrap JS components to work you will still need to import bootstrap.js into .angular-cli.json under scripts (this should happen automatically):

...     
"scripts": ["../node_modules/jquery/dist/jquery.js",
                  "../node_modules/tether/dist/js/tether.js",
                  "../node_modules/bootstrap/dist/js/bootstrap.js"],
...

Update 2017/09/13: Boostrap 4 Beta is now using popper.js instead of tether.js. So depending on which version you are using import either tether.js (alpha) or popper.js (beta) in your scripts. Thanks for the heads up @MinorThreat