Cargo Features

convex_sync_types has no features set by default.

[dependencies]
convex_sync_types = { version = "0.8.1", features = ["testing"] }
testing = proptest, proptest-derive

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

proptest-derive testing?
proptest testing?