Status of kotlin.internal.contracts?

abrownvt January 26, 2018, 6:24pm 3

I noticed these contracts in a few places, what exactly are they?

Topic		Replies	Views
@Contract support in Kotlin	1	1944	June 5, 2018
When will contracts be final?	3	1186	February 7, 2021
Contracts not working as expected when dividing into functions Support	5	2224	October 31, 2018
Android, test projects, and modules	1	1075	November 3, 2015
Visibilities (post 1.0 stuff)	2	2237	December 2, 2015