we are running our spec libs tests also with :advanced cljs optimizations. Seems that the cljs.spec.test.alpha/instrument doesn’t work under it. Is there a way to enable it?

let's say the spec decimal-in defined here: https://github.com/SparkFund/useful-specs/blob/master/src/specs/number.clj#L24 is exactly what i need, except that the generator it comes with results in a bigdec, where I need a double. Is there a way to make a new generator that just coerces the output of an existing generator?

basically i just need a spec and a generator for a double with a specified precision and scale

Make a spec with s/decimal-in

Then make a spec that wraps it with s/with-gen

If you want build on the existing gen, use gen/fmap over the s/gen of the first spec