ryu-ecmascript is used at run time in 9 crates (3 directly). It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) ryu-ecmascript version
950 3 json_in_type ^0.1
1 ssb-json-msg-data ^0.1.1
3 ssb-legacy-msg-data ^0.1.1