diff --git a/crates/napi/src/env.rs b/crates/napi/src/env.rs
index b5ec8f75..6f0587d8 100644
--- a/crates/napi/src/env.rs
+++ b/crates/napi/src/env.rs
@@ -1116,6 +1116,23 @@ impl Env {
     Ok(unsafe { JsObject::from_raw_unchecked(self.0, promise) })
   }
 
+  #[cfg(all(feature = "tokio_rt", feature = "napi4"))]
+  pub fn spawn_future<
+    T: 'static + Send + ToNapiValue,
+    F: 'static + Send + Future<Output = Result<T>>,
+  >(
+    &self,
+    fut: F,
+  ) -> Result<JsObject> {
+    use crate::tokio_runtime;
+
+    let promise = tokio_runtime::execute_tokio_future(self.0, fut, |env, val| unsafe {
+      ToNapiValue::to_napi_value(env, val)
+    })?;
+
+    Ok(unsafe { JsObject::from_raw_unchecked(self.0, promise) })
+  }
+
   /// Creates a deferred promise, which can be resolved or rejected from a background thread.
   #[cfg(feature = "napi4")]
   pub fn create_deferred<Data: ToNapiValue, Resolver: FnOnce(Env) -> Result<Data>>(
diff --git a/crates/napi/src/threadsafe_function.rs b/crates/napi/src/threadsafe_function.rs
index 4912d6e6..369b69a0 100644
--- a/crates/napi/src/threadsafe_function.rs
+++ b/crates/napi/src/threadsafe_function.rs
@@ -5,11 +5,11 @@ use std::ffi::CString;
 use std::marker::PhantomData;
 use std::os::raw::c_void;
 use std::ptr;
-use std::sync::atomic::{AtomicUsize, Ordering};
-use std::sync::{Arc, Mutex};
+use std::sync::atomic::{AtomicBool, Ordering};
+use std::sync::{Arc, RwLock};
 
-use crate::bindgen_runtime::ToNapiValue;
-use crate::{check_status, sys, Env, Error, JsError, Result, Status};
+use crate::bindgen_runtime::{FromNapiValue, ToNapiValue};
+use crate::{check_status, sys, Env, JsError, JsUnknown, Result, Status};
 
 /// ThreadSafeFunction Context object
 /// the `value` is the value passed to `call` method
@@ -96,6 +96,46 @@ type_level_enum! {
   }
 }
 
+struct ThreadsafeFunctionHandle {
+  raw: sys::napi_threadsafe_function,
+  aborted: RwLock<bool>,
+  referred: AtomicBool,
+}
+
+unsafe impl Send for ThreadsafeFunctionHandle {}
+unsafe impl Sync for ThreadsafeFunctionHandle {}
+
+impl Drop for ThreadsafeFunctionHandle {
+  fn drop(&mut self) {
+    let aborted_guard = self
+      .aborted
+      .read()
+      .expect("Threadsafe Function aborted lock failed");
+    if !*aborted_guard && self.referred.load(Ordering::Acquire) {
+      let release_status = unsafe {
+        sys::napi_release_threadsafe_function(self.raw, sys::ThreadsafeFunctionReleaseMode::release)
+      };
+      assert!(
+        release_status == sys::Status::napi_ok,
+        "Threadsafe Function release failed {}",
+        Status::from(release_status)
+      );
+    }
+  }
+}
+
+#[repr(u8)]
+enum ThreadsafeFunctionCallVariant {
+  Direct,
+  WithCallback,
+}
+
+struct ThreadsafeFunctionCallJsBackData<T> {
+  data: T,
+  call_variant: ThreadsafeFunctionCallVariant,
+  callback: Box<dyn FnOnce(JsUnknown) -> Result<()>>,
+}
+
 /// Communicate with the addon's main thread by invoking a JavaScript function from other threads.
 ///
 /// ## Example
@@ -146,41 +186,28 @@ type_level_enum! {
 /// }
 /// ```
 pub struct ThreadsafeFunction<T: 'static, ES: ErrorStrategy::T = ErrorStrategy::CalleeHandled> {
-  raw_tsfn: sys::napi_threadsafe_function,
-  aborted: Arc<Mutex<bool>>,
-  ref_count: Arc<AtomicUsize>,
+  handle: Arc<ThreadsafeFunctionHandle>,
   _phantom: PhantomData<(T, ES)>,
 }
 
 impl<T: 'static, ES: ErrorStrategy::T> Clone for ThreadsafeFunction<T, ES> {
   fn clone(&self) -> Self {
-    let is_aborted = self.aborted.lock().unwrap();
-    if !*is_aborted {
-      let acquire_status = unsafe { sys::napi_acquire_threadsafe_function(self.raw_tsfn) };
-      debug_assert!(
-        acquire_status == sys::Status::napi_ok,
-        "Acquire threadsafe function failed in clone"
-      );
-    } else {
+    let aborted_guard = self
+      .handle
+      .aborted
+      .read()
+      .expect("Threadsafe Function aborted lock failed");
+    if *aborted_guard {
       panic!("ThreadsafeFunction was aborted, can not clone it");
     }
 
-    self.ref_count.fetch_add(1, Ordering::AcqRel);
-
-    drop(is_aborted);
-
     Self {
-      raw_tsfn: self.raw_tsfn,
-      aborted: Arc::clone(&self.aborted),
-      ref_count: Arc::clone(&self.ref_count),
+      handle: self.handle.clone(),
       _phantom: PhantomData,
     }
   }
 }
 
-unsafe impl<T, ES: ErrorStrategy::T> Send for ThreadsafeFunction<T, ES> {}
-unsafe impl<T, ES: ErrorStrategy::T> Sync for ThreadsafeFunction<T, ES> {}
-
 impl<T: 'static, ES: ErrorStrategy::T> ThreadsafeFunction<T, ES> {
   /// See [napi_create_threadsafe_function](https://nodejs.org/api/n-api.html#n_api_napi_create_threadsafe_function)
   /// for more information.
@@ -201,11 +228,8 @@ impl<T: 'static, ES: ErrorStrategy::T> ThreadsafeFunction<T, ES> {
       sys::napi_create_string_utf8(env, s.as_ptr(), len, &mut async_resource_name)
     })?;
 
-    let initial_thread_count = 1usize;
     let mut raw_tsfn = ptr::null_mut();
-    let ptr = Box::into_raw(Box::new(callback)) as *mut c_void;
-    let aborted = Arc::new(Mutex::new(false));
-    let aborted_ptr = Arc::into_raw(aborted.clone());
+    let callback_ptr = Box::into_raw(Box::new(callback));
     check_status!(unsafe {
       sys::napi_create_threadsafe_function(
         env,
@@ -213,19 +237,23 @@ impl<T: 'static, ES: ErrorStrategy::T> ThreadsafeFunction<T, ES> {
         ptr::null_mut(),
         async_resource_name,
         max_queue_size,
-        initial_thread_count,
-        aborted_ptr as *mut c_void,
+        1,
+        ptr::null_mut(),
         Some(thread_finalize_cb::<T, V, R>),
-        ptr,
+        callback_ptr.cast(),
         Some(call_js_cb::<T, V, R, ES>),
         &mut raw_tsfn,
       )
     })?;
 
+    check_status!(unsafe { sys::napi_acquire_threadsafe_function(raw_tsfn) })?;
+
     Ok(ThreadsafeFunction {
-      raw_tsfn,
-      aborted,
-      ref_count: Arc::new(AtomicUsize::new(initial_thread_count)),
+      handle: Arc::new(ThreadsafeFunctionHandle {
+        raw: raw_tsfn,
+        aborted: RwLock::new(false),
+        referred: AtomicBool::new(true),
+      }),
       _phantom: PhantomData,
     })
   }
@@ -235,54 +263,63 @@ impl<T: 'static, ES: ErrorStrategy::T> ThreadsafeFunction<T, ES> {
   ///
   /// "ref" is a keyword so that we use "refer" here.
   pub fn refer(&mut self, env: &Env) -> Result<()> {
-    let is_aborted = self.aborted.lock().unwrap();
-    if *is_aborted {
-      return Err(Error::new(
-        Status::Closing,
-        "Can not ref, Thread safe function already aborted".to_string(),
-      ));
+    let aborted_guard = self
+      .handle
+      .aborted
+      .read()
+      .expect("Threadsafe Function aborted lock failed");
+    if !*aborted_guard && !self.handle.referred.load(Ordering::Acquire) {
+      check_status!(unsafe { sys::napi_ref_threadsafe_function(env.0, self.handle.raw) })?;
+      self.handle.referred.store(true, Ordering::Release);
     }
-    drop(is_aborted);
-    self.ref_count.fetch_add(1, Ordering::AcqRel);
-    check_status!(unsafe { sys::napi_ref_threadsafe_function(env.0, self.raw_tsfn) })
+    Ok(())
   }
 
   /// See [napi_unref_threadsafe_function](https://nodejs.org/api/n-api.html#n_api_napi_unref_threadsafe_function)
   /// for more information.
   pub fn unref(&mut self, env: &Env) -> Result<()> {
-    let is_aborted = self.aborted.lock().unwrap();
-    if *is_aborted {
-      return Err(Error::new(
-        Status::Closing,
-        "Can not unref, Thread safe function already aborted".to_string(),
-      ));
+    let aborted_guard = self
+      .handle
+      .aborted
+      .read()
+      .expect("Threadsafe Function aborted lock failed");
+    if !*aborted_guard && self.handle.referred.load(Ordering::Acquire) {
+      check_status!(unsafe { sys::napi_unref_threadsafe_function(env.0, self.handle.raw) })?;
+      self.handle.referred.store(false, Ordering::Release);
     }
-    self.ref_count.fetch_sub(1, Ordering::AcqRel);
-    check_status!(unsafe { sys::napi_unref_threadsafe_function(env.0, self.raw_tsfn) })
+    Ok(())
   }
 
   pub fn aborted(&self) -> bool {
-    let is_aborted = self.aborted.lock().unwrap();
-    *is_aborted
+    let aborted_guard = self
+      .handle
+      .aborted
+      .read()
+      .expect("Threadsafe Function aborted lock failed");
+    *aborted_guard
   }
 
   pub fn abort(self) -> Result<()> {
-    let mut is_aborted = self.aborted.lock().unwrap();
-    if !*is_aborted {
+    let mut aborted_guard = self
+      .handle
+      .aborted
+      .write()
+      .expect("Threadsafe Function aborted lock failed");
+    if !*aborted_guard {
       check_status!(unsafe {
         sys::napi_release_threadsafe_function(
-          self.raw_tsfn,
+          self.handle.raw,
           sys::ThreadsafeFunctionReleaseMode::abort,
         )
       })?;
+      *aborted_guard = true;
     }
-    *is_aborted = true;
     Ok(())
   }
 
   /// Get the raw `ThreadSafeFunction` pointer
   pub fn raw(&self) -> sys::napi_threadsafe_function {
-    self.raw_tsfn
+    self.handle.raw
   }
 }
 
@@ -290,65 +327,149 @@ impl<T: 'static> ThreadsafeFunction<T, ErrorStrategy::CalleeHandled> {
   /// See [napi_call_threadsafe_function](https://nodejs.org/api/n-api.html#n_api_napi_call_threadsafe_function)
   /// for more information.
   pub fn call(&self, value: Result<T>, mode: ThreadsafeFunctionCallMode) -> Status {
-    let is_aborted = self.aborted.lock().unwrap();
-    if *is_aborted {
-      return Status::Closing;
-    }
     unsafe {
       sys::napi_call_threadsafe_function(
-        self.raw_tsfn,
-        Box::into_raw(Box::new(value)) as *mut c_void,
+        self.handle.raw,
+        Box::into_raw(Box::new(value.map(|data| {
+          ThreadsafeFunctionCallJsBackData {
+            data,
+            call_variant: ThreadsafeFunctionCallVariant::Direct,
+            callback: Box::new(|_d: JsUnknown| Ok(())),
+          }
+        })))
+        .cast(),
         mode.into(),
       )
     }
     .into()
   }
+
+  pub fn call_with_return_value<D: FromNapiValue, F: 'static + FnOnce(D) -> Result<()>>(
+    &self,
+    value: Result<T>,
+    mode: ThreadsafeFunctionCallMode,
+    cb: F,
+  ) -> Status {
+    unsafe {
+      sys::napi_call_threadsafe_function(
+        self.handle.raw,
+        Box::into_raw(Box::new(value.map(|data| {
+          ThreadsafeFunctionCallJsBackData {
+            data,
+            call_variant: ThreadsafeFunctionCallVariant::WithCallback,
+            callback: Box::new(move |d: JsUnknown| {
+              D::from_napi_value(d.0.env, d.0.value).and_then(cb)
+            }),
+          }
+        })))
+        .cast(),
+        mode.into(),
+      )
+    }
+    .into()
+  }
+
+  #[cfg(feature = "tokio_rt")]
+  pub async fn call_async<D: 'static + FromNapiValue>(&self, value: Result<T>) -> Result<D> {
+    let (sender, receiver) = tokio::sync::oneshot::channel::<D>();
+    check_status!(unsafe {
+      sys::napi_call_threadsafe_function(
+        self.handle.raw,
+        Box::into_raw(Box::new(value.map(|data| {
+          ThreadsafeFunctionCallJsBackData {
+            data,
+            call_variant: ThreadsafeFunctionCallVariant::WithCallback,
+            callback: Box::new(move |d: JsUnknown| {
+              D::from_napi_value(d.0.env, d.0.value).and_then(move |d| {
+                sender.send(d).map_err(|_| {
+                  crate::Error::from_reason("Failed to send return value to tokio sender")
+                })
+              })
+            }),
+          }
+        })))
+        .cast(),
+        ThreadsafeFunctionCallMode::NonBlocking.into(),
+      )
+    })?;
+    receiver
+      .await
+      .map_err(|err| crate::Error::new(Status::GenericFailure, format!("{}", err)))
+  }
 }
 
 impl<T: 'static> ThreadsafeFunction<T, ErrorStrategy::Fatal> {
   /// See [napi_call_threadsafe_function](https://nodejs.org/api/n-api.html#n_api_napi_call_threadsafe_function)
   /// for more information.
   pub fn call(&self, value: T, mode: ThreadsafeFunctionCallMode) -> Status {
-    let is_aborted = self.aborted.lock().unwrap();
-    if *is_aborted {
-      return Status::Closing;
-    }
     unsafe {
       sys::napi_call_threadsafe_function(
-        self.raw_tsfn,
-        Box::into_raw(Box::new(value)) as *mut c_void,
+        self.handle.raw,
+        Box::into_raw(Box::new(ThreadsafeFunctionCallJsBackData {
+          data: value,
+          call_variant: ThreadsafeFunctionCallVariant::Direct,
+          callback: Box::new(|_d: JsUnknown| Ok(())),
+        }))
+        .cast(),
         mode.into(),
       )
     }
     .into()
   }
-}
 
-impl<T: 'static, ES: ErrorStrategy::T> Drop for ThreadsafeFunction<T, ES> {
-  fn drop(&mut self) {
-    let mut is_aborted = self.aborted.lock().unwrap();
-    if !*is_aborted && self.ref_count.load(Ordering::Acquire) <= 1 {
-      let release_status = unsafe {
-        sys::napi_release_threadsafe_function(
-          self.raw_tsfn,
-          sys::ThreadsafeFunctionReleaseMode::release,
-        )
-      };
-      assert!(
-        release_status == sys::Status::napi_ok,
-        "Threadsafe Function release failed {:?}",
-        Status::from(release_status)
-      );
-      *is_aborted = true;
-    } else {
-      self.ref_count.fetch_sub(1, Ordering::Release);
+  pub fn call_with_return_value<D: FromNapiValue, F: 'static + FnOnce(D) -> Result<()>>(
+    &self,
+    value: T,
+    mode: ThreadsafeFunctionCallMode,
+    cb: F,
+  ) -> Status {
+    unsafe {
+      sys::napi_call_threadsafe_function(
+        self.handle.raw,
+        Box::into_raw(Box::new(ThreadsafeFunctionCallJsBackData {
+          data: value,
+          call_variant: ThreadsafeFunctionCallVariant::WithCallback,
+          callback: Box::new(move |d: JsUnknown| {
+            D::from_napi_value(d.0.env, d.0.value).and_then(cb)
+          }),
+        }))
+        .cast(),
+        mode.into(),
+      )
     }
-    drop(is_aborted);
+    .into()
+  }
+
+  #[cfg(feature = "tokio_rt")]
+  pub async fn call_async<D: 'static + FromNapiValue>(&self, value: T) -> Result<D> {
+    let (sender, receiver) = tokio::sync::oneshot::channel::<D>();
+    check_status!(unsafe {
+      sys::napi_call_threadsafe_function(
+        self.handle.raw,
+        Box::into_raw(Box::new(ThreadsafeFunctionCallJsBackData {
+          data: value,
+          call_variant: ThreadsafeFunctionCallVariant::WithCallback,
+          callback: Box::new(move |d: JsUnknown| {
+            D::from_napi_value(d.0.env, d.0.value).and_then(move |d| {
+              sender.send(d).map_err(|_| {
+                crate::Error::from_reason("Failed to send return value to tokio sender")
+              })
+            })
+          }),
+        }))
+        .cast(),
+        ThreadsafeFunctionCallMode::NonBlocking.into(),
+      )
+    })?;
+    receiver
+      .await
+      .map_err(|err| crate::Error::new(Status::GenericFailure, format!("{}", err)))
   }
 }
 
+#[allow(unused_variables)]
 unsafe extern "C" fn thread_finalize_cb<T: 'static, V: ToNapiValue, R>(
-  _raw_env: sys::napi_env,
+  env: sys::napi_env,
   finalize_data: *mut c_void,
   finalize_hint: *mut c_void,
 ) where
@@ -356,9 +477,6 @@ unsafe extern "C" fn thread_finalize_cb<T: 'static, V: ToNapiValue, R>(
 {
   // cleanup
   drop(unsafe { Box::<R>::from_raw(finalize_hint.cast()) });
-  let aborted = unsafe { Arc::<Mutex<bool>>::from_raw(finalize_data.cast()) };
-  let mut is_aborted = aborted.lock().unwrap();
-  *is_aborted = true;
 }
 
 unsafe extern "C" fn call_js_cb<T: 'static, V: ToNapiValue, R, ES>(
@@ -375,11 +493,15 @@ unsafe extern "C" fn call_js_cb<T: 'static, V: ToNapiValue, R, ES>(
     return;
   }
 
-  let ctx: &mut R = unsafe { &mut *context.cast::<R>() };
-  let val: Result<T> = unsafe {
+  let ctx: &mut R = unsafe { Box::leak(Box::from_raw(context.cast())) };
+  let val = unsafe {
     match ES::VALUE {
-      ErrorStrategy::CalleeHandled::VALUE => *Box::<Result<T>>::from_raw(data.cast()),
-      ErrorStrategy::Fatal::VALUE => Ok(*Box::<T>::from_raw(data.cast())),
+      ErrorStrategy::CalleeHandled::VALUE => {
+        *Box::<Result<ThreadsafeFunctionCallJsBackData<T>>>::from_raw(data.cast())
+      }
+      ErrorStrategy::Fatal::VALUE => Ok(*Box::<ThreadsafeFunctionCallJsBackData<T>>::from_raw(
+        data.cast(),
+      )),
     }
   };
 
@@ -389,15 +511,16 @@ unsafe extern "C" fn call_js_cb<T: 'static, V: ToNapiValue, R, ES>(
   let ret = val.and_then(|v| {
     (ctx)(ThreadSafeCallContext {
       env: unsafe { Env::from_raw(raw_env) },
-      value: v,
+      value: v.data,
     })
+    .map(|ret| (ret, v.call_variant, v.callback))
   });
 
   // Follow async callback conventions: https://nodejs.org/en/knowledge/errors/what-are-the-error-conventions/
   // Check if the Result is okay, if so, pass a null as the first (error) argument automatically.
   // If the Result is an error, pass that as the first argument.
   let status = match ret {
-    Ok(values) => {
+    Ok((values, call_variant, callback)) => {
       let values = values
         .into_iter()
         .map(|v| unsafe { ToNapiValue::to_napi_value(raw_env, v) });
@@ -408,7 +531,8 @@ unsafe extern "C" fn call_js_cb<T: 'static, V: ToNapiValue, R, ES>(
       } else {
         values.collect()
       };
-      match args {
+      let mut return_value = ptr::null_mut();
+      let status = match args {
         Ok(args) => unsafe {
           sys::napi_call_function(
             raw_env,
@@ -416,7 +540,7 @@ unsafe extern "C" fn call_js_cb<T: 'static, V: ToNapiValue, R, ES>(
             js_callback,
             args.len(),
             args.as_ptr(),
-            ptr::null_mut(),
+            &mut return_value,
           )
         },
         Err(e) => match ES::VALUE {
@@ -430,11 +554,21 @@ unsafe extern "C" fn call_js_cb<T: 'static, V: ToNapiValue, R, ES>(
               js_callback,
               1,
               [JsError::from(e).into_value(raw_env)].as_mut_ptr(),
-              ptr::null_mut(),
+              &mut return_value,
             )
           },
         },
+      };
+      if let ThreadsafeFunctionCallVariant::WithCallback = call_variant {
+        if let Err(err) = callback(JsUnknown(crate::Value {
+          env: raw_env,
+          value: return_value,
+          value_type: crate::ValueType::Unknown,
+        })) {
+          unsafe { sys::napi_throw(raw_env, JsError::from(err).into_value(raw_env)) };
+        }
       }
+      status
     }
     Err(e) if ES::VALUE == ErrorStrategy::Fatal::VALUE => unsafe {
       sys::napi_fatal_exception(raw_env, JsError::from(e).into_value(raw_env))
diff --git a/examples/napi-compat-mode/__test__/napi4/tsfn-dua-instance.js b/examples/napi-compat-mode/__test__/napi4/tsfn-dua-instance.js
index 8950b019..abd7283f 100644
--- a/examples/napi-compat-mode/__test__/napi4/tsfn-dua-instance.js
+++ b/examples/napi-compat-mode/__test__/napi4/tsfn-dua-instance.js
@@ -2,8 +2,16 @@ const bindings = require('../../index.node')
 
 async function main() {
   await Promise.resolve()
-  new bindings.A((s) => console.info(s))
-  new bindings.A((s) => console.info(s))
+  const a1 = new bindings.A((err, s) => {
+    console.info(s)
+    a1.unref()
+  })
+  const a2 = new bindings.A((err, s) => {
+    console.info(s)
+    a2.unref()
+  })
+  a1.call()
+  a2.call()
 }
 
 main().catch((e) => {
diff --git a/examples/napi-compat-mode/src/napi4/mod.rs b/examples/napi-compat-mode/src/napi4/mod.rs
index 844ef940..27b375d1 100644
--- a/examples/napi-compat-mode/src/napi4/mod.rs
+++ b/examples/napi-compat-mode/src/napi4/mod.rs
@@ -1,11 +1,11 @@
-use napi::{Env, JsObject, Result};
+use napi::{Env, JsObject, Property, Result};
 
 mod deferred;
 mod tsfn;
 mod tsfn_dua_instance;
 
 use tsfn::*;
-use tsfn_dua_instance::constructor;
+use tsfn_dua_instance::*;
 
 pub fn register_js(exports: &mut JsObject, env: &Env) -> Result<()> {
   exports.create_named_method("testThreadsafeFunction", test_threadsafe_function)?;
@@ -26,7 +26,14 @@ pub fn register_js(exports: &mut JsObject, env: &Env) -> Result<()> {
   exports.create_named_method("testTsfnWithRef", test_tsfn_with_ref)?;
   exports.create_named_method("testDeferred", deferred::test_deferred)?;
 
-  let obj = env.define_class("A", constructor, &[])?;
+  let obj = env.define_class(
+    "A",
+    constructor,
+    &[
+      Property::new("call")?.with_method(call),
+      Property::new("unref")?.with_method(unref),
+    ],
+  )?;
 
   exports.set_named_property("A", obj)?;
   Ok(())
diff --git a/examples/napi-compat-mode/src/napi4/tsfn.rs b/examples/napi-compat-mode/src/napi4/tsfn.rs
index dd464e38..5b845561 100644
--- a/examples/napi-compat-mode/src/napi4/tsfn.rs
+++ b/examples/napi-compat-mode/src/napi4/tsfn.rs
@@ -95,7 +95,7 @@ pub fn test_call_aborted_threadsafe_function(ctx: CallContext) -> Result<JsUndef
   tsfn_clone.abort()?;
 
   let call_status = tsfn.call(Ok(1), ThreadsafeFunctionCallMode::NonBlocking);
-  assert!(call_status == Status::Closing);
+  assert!(call_status != Status::Ok);
   ctx.env.get_undefined()
 }
 
diff --git a/examples/napi-compat-mode/src/napi4/tsfn_dua_instance.rs b/examples/napi-compat-mode/src/napi4/tsfn_dua_instance.rs
index 12ca640d..7a44122c 100644
--- a/examples/napi-compat-mode/src/napi4/tsfn_dua_instance.rs
+++ b/examples/napi-compat-mode/src/napi4/tsfn_dua_instance.rs
@@ -13,7 +13,7 @@ pub struct A {
 pub fn constructor(ctx: CallContext) -> napi::Result<JsUndefined> {
   let callback = ctx.get::<JsFunction>(0)?;
 
-  let mut cb =
+  let cb =
     ctx
       .env
       .create_threadsafe_function(&callback, 0, |ctx: ThreadSafeCallContext<String>| {
@@ -23,11 +23,28 @@ pub fn constructor(ctx: CallContext) -> napi::Result<JsUndefined> {
           .map(|js_string| vec![js_string])
       })?;
 
-  cb.unref(ctx.env)?;
-
   let mut this: JsObject = ctx.this_unchecked();
   let obj = A { cb };
 
   ctx.env.wrap(&mut this, obj)?;
   ctx.env.get_undefined()
 }
+
+#[js_function]
+pub fn call(ctx: CallContext) -> napi::Result<JsUndefined> {
+  let this = ctx.this_unchecked();
+  let obj = ctx.env.unwrap::<A>(&this)?;
+  obj.cb.call(
+    Ok("ThreadsafeFunction NonBlocking Call".to_owned()),
+    napi::threadsafe_function::ThreadsafeFunctionCallMode::NonBlocking,
+  );
+  ctx.env.get_undefined()
+}
+
+#[js_function]
+pub fn unref(ctx: CallContext) -> napi::Result<JsUndefined> {
+  let this = ctx.this_unchecked();
+  let obj = ctx.env.unwrap::<A>(&this)?;
+  obj.cb.unref(ctx.env)?;
+  ctx.env.get_undefined()
+}
diff --git a/examples/napi/__test__/typegen.spec.ts.md b/examples/napi/__test__/typegen.spec.ts.md
index 1e758c2b..2c99d8f3 100644
--- a/examples/napi/__test__/typegen.spec.ts.md
+++ b/examples/napi/__test__/typegen.spec.ts.md
@@ -195,6 +195,8 @@ Generated by [AVA](https://avajs.dev).
     export function threadsafeFunctionFatalMode(cb: (...args: any[]) => any): void␊
     export function threadsafeFunctionFatalModeError(cb: (...args: any[]) => any): void␊
     export function threadsafeFunctionClosureCapture(func: (...args: any[]) => any): void␊
+    export function tsfnCallWithCallback(func: (...args: any[]) => any): void␊
+    export function tsfnAsyncCall(func: (...args: any[]) => any): Promise<void>␊
     export function getBuffer(): Buffer␊
     export function appendBuffer(buf: Buffer): Buffer␊
     export function getEmptyBuffer(): Buffer␊
diff --git a/examples/napi/__test__/typegen.spec.ts.snap b/examples/napi/__test__/typegen.spec.ts.snap
index d6b3df0b..031a5460 100644
Binary files a/examples/napi/__test__/typegen.spec.ts.snap and b/examples/napi/__test__/typegen.spec.ts.snap differ
diff --git a/examples/napi/__test__/values.spec.ts b/examples/napi/__test__/values.spec.ts
index af98615a..b6f38072 100644
--- a/examples/napi/__test__/values.spec.ts
+++ b/examples/napi/__test__/values.spec.ts
@@ -51,6 +51,8 @@ import {
   callThreadsafeFunction,
   threadsafeFunctionThrowError,
   threadsafeFunctionClosureCapture,
+  tsfnCallWithCallback,
+  tsfnAsyncCall,
   asyncPlus100,
   getGlobal,
   getUndefined,
@@ -759,6 +761,30 @@ Napi4Test('Promise should reject raw error in rust', async (t) => {
   t.is(err, fxError)
 })
 
+Napi4Test('call ThreadsafeFunction with callback', async (t) => {
+  await t.notThrowsAsync(
+    () =>
+      new Promise<void>((resolve) => {
+        tsfnCallWithCallback(() => {
+          resolve()
+          return 'ReturnFromJavaScriptRawCallback'
+        })
+      }),
+  )
+})
+
+Napi4Test('async call ThreadsafeFunction', async (t) => {
+  await t.notThrowsAsync(() =>
+    tsfnAsyncCall((err, arg1, arg2, arg3) => {
+      t.is(err, null)
+      t.is(arg1, 0)
+      t.is(arg2, 1)
+      t.is(arg3, 2)
+      return 'ReturnFromJavaScriptRawCallback'
+    }),
+  )
+})
+
 const Napi5Test = Number(process.versions.napi) >= 5 ? test : test.skip
 
 Napi5Test('Date test', (t) => {
diff --git a/examples/napi/index.d.ts b/examples/napi/index.d.ts
index 9cadb8a7..a9c5ca4a 100644
--- a/examples/napi/index.d.ts
+++ b/examples/napi/index.d.ts
@@ -185,6 +185,8 @@ export function threadsafeFunctionThrowError(cb: (...args: any[]) => any): void
 export function threadsafeFunctionFatalMode(cb: (...args: any[]) => any): void
 export function threadsafeFunctionFatalModeError(cb: (...args: any[]) => any): void
 export function threadsafeFunctionClosureCapture(func: (...args: any[]) => any): void
+export function tsfnCallWithCallback(func: (...args: any[]) => any): void
+export function tsfnAsyncCall(func: (...args: any[]) => any): Promise<void>
 export function getBuffer(): Buffer
 export function appendBuffer(buf: Buffer): Buffer
 export function getEmptyBuffer(): Buffer
diff --git a/examples/napi/src/threadsafe_function.rs b/examples/napi/src/threadsafe_function.rs
index 089fa858..546e870e 100644
--- a/examples/napi/src/threadsafe_function.rs
+++ b/examples/napi/src/threadsafe_function.rs
@@ -76,3 +76,31 @@ fn threadsafe_function_closure_capture(func: JsFunction) -> napi::Result<()> {
 
   Ok(())
 }
+
+#[napi]
+pub fn tsfn_call_with_callback(func: JsFunction) -> napi::Result<()> {
+  let tsfn: ThreadsafeFunction<()> =
+    func.create_threadsafe_function(0, move |_| Ok(Vec::<JsString>::new()))?;
+  tsfn.call_with_return_value(
+    Ok(()),
+    ThreadsafeFunctionCallMode::NonBlocking,
+    |value: String| {
+      println!("{}", value);
+      assert_eq!(value, "ReturnFromJavaScriptRawCallback".to_owned());
+      Ok(())
+    },
+  );
+  Ok(())
+}
+
+#[napi(ts_return_type = "Promise<void>")]
+pub fn tsfn_async_call(env: Env, func: JsFunction) -> napi::Result<Object> {
+  let tsfn: ThreadsafeFunction<()> =
+    func.create_threadsafe_function(0, move |_| Ok(vec![0u32, 1u32, 2u32]))?;
+
+  env.spawn_future(async move {
+    let msg: String = tsfn.call_async(Ok(())).await?;
+    assert_eq!(msg, "ReturnFromJavaScriptRawCallback".to_owned());
+    Ok(())
+  })
+}