Cargo Features

Valerie has no features set by default.

[dependencies]
valerie = { version = "0.1.2", features = ["debug"] }
debug = console_error_panic_hook

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.

console_error_panic_hook debug?