Type Alias Callback 

pub type Callback = Option<unsafe extern "C" fn(env: Env, info: CallbackInfo) -> Value>;

Available on crate features napi-1 and sys only.

napi_callback

Aliased Type

pub enum Callback {
    None,
    Some(unsafe extern "C" fn(*mut Env__, *mut CallbackInfo__) -> *mut Value__),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut Env__, *mut CallbackInfo__) -> *mut Value__)

Some value of type T.