How to use yarn to install bootstrap 4 - libsass libraries

Just run:

yarn add [email protected]
yarn add gulp-sass --save-dev

Attention:

I just realized a difference between the installations with npm install and yarn.

Here are the two commands I used:

yarn add [email protected] --dev
npm install [email protected] --save-dev

The correct/current version of bootstrap 4.0.0-alpha.6 contains this file:

/node_modules/bootstrap/scss/_tags.scss

Installed with npm, this file exists as expected. But installed via yarn, this file is missing. Even if changing bootstrap@^4.0.0-alpha.6 to [email protected] in package.json didn't fix this issue.

yarn add bootstrap@4

installs the latest bootstrap 4 version (4.6.0 at aug/'21)

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And you can always use

yarn add your_package@^

To view all the versions that are available