Tooltips: "Tether is not defined"

[lgkonline]

Today I wanted to try the Bootstrap 4 alpha and when I want to use the tooltips plugin I get this error in my debugger console:

Uncaught ReferenceError: Tether is not defined
bootstrap.js:2967

show @ bootstrap.js:2967
_enter @ bootstrap.js:316
4n.extend.proxy.n.isFunction.e @ jquery-1.11.0.min.js:2
n.each.n.event.special.(anonymous function).handle @ jquery-1.11.0.min.js:3
n.event.dispatch @ jquery-1.11.0.min.js:3
n.event.add.r.handle @ jquery-1.11.0.min.js:3

[kkirsche]

@lgkonline did you load the tether javascript library? You'll notice in the docs we load this file to load the tether library https://github.com/twbs/bootstrap/blob/v4-dev/docs/assets/js/vendor/tether.min.js#L1

[zacechola]

Should x-ref with #17201 and cc @fat. There are options for handling dependencies in general that need to be worked out.

[cvrebert]

We should probably throw a more explicit "Bootstrap tooltips require Tether ()" error/warning like we do for jQuery.

[lgkonline]

Ah, got it. Thanks guys. :)
So I need to include the Tether library.

I guess I can close issue here.

[cvrebert]

Reopening to track the "throw an explicit error" suggestion.

[sdaitzman]

Does this mean that Tether needs to be imported separately from the bootstrap js?

EDIT: found the documentation! For anyone else who finds this thread, it's at http://v4-alpha.getbootstrap.com/components/tooltips/#overview

[digitaldesigndj]

I feel like tether should be included as a bower dependency of bootstrap 4.

Thanks for all the great work everyone.

[duqb]

You need to include the Tether library. but Tether library return function value Tether is not a global !
however Bootstrap4.0 direct use Tether ,that Tether is not defined.

[activebiz]

+1 same issue with alpha 2.

[cvrebert]

See #17325.