Just wanted to mention that a lot of folks have been writing QuickCheck style libraries for JavaScipt - https://www.npmjs.com/search?q=quickcheck
Checkers uses ClojureScript’s test.check under the hood: https://www.npmjs.com/package/checkers
Lee Byron also has testcheck-js https://github.com/leebyron/testcheck-js which I believe does shrinking and can be hooked into Mocha and Jasmine.
We have https://github.com/burntsushi/quickcheck in Rust too.
Just wanted to mention that a lot of folks have been writing QuickCheck style libraries for JavaScipt - https://www.npmjs.com/search?q=quickcheck
Checkers uses ClojureScript’s test.check under the hood: https://www.npmjs.com/package/checkers
Lee Byron also has testcheck-js https://github.com/leebyron/testcheck-js which I believe does shrinking and can be hooked into Mocha and Jasmine.
We have https://github.com/burntsushi/quickcheck in Rust too.