Bug#892838: RFP: libjs-wait-until-promise -- test utility to simplify waiting for a condition

["W. Martin Borgert" <debacle@debian.org>]

Package: wnpp
Severity: wishlist

* Package name    : libjs-wait-until-promise
  Version         : 1.0.0
  Upstream Author : Simen Bekkhus <sbekkhus91@gmail.com>
* URL             : https://github.com/SimenB/wait-until-promise
* License         : MIT
  Programming Lang: JavaScript
  Description     : test utility to simplify waiting for a condition

Usage

To use it, import the module, and pass it a function. A promise is
returned, and it is resolved after the passed function returns a
truthy value. If the function passed never returns a truthy value,
or it times out, the promise is rejected.

Dependency for converse.js (#807275).