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+# FunctionReference
+
+`Napi::FunctionReference` is a subclass of [`Napi::Reference`](reference.md), and
+is equivalent to an instance of `Napi::Reference<Napi::Function>`. This means
+that a `Napi::FunctionReference` holds a [`Napi::Function`](function.md), and a
+count of the number of references to that `Napi::Function`. When the count is
+greater than 0, a `Napi::FunctionReference` is not eligible for garbage collection.
+This ensures that the `Function` will remain accessible, even if the original
+reference to it is no longer available.
+`Napi::FunctionReference` allows the referenced JavaScript function object to be
+called from a native add-on with two different methods: `Call` and `MakeCallback`.
+See the documentation for [`Napi::Function`](function.md) for when `Call` should
+be used instead of `MakeCallback` and vice-versa.
+
+The `Napi::FunctionReference` class inherits its behavior from the `Napi::Reference`
+class (for more info see: [`Napi::Reference`](reference.md)).
+
+## Methods
+
+### Weak
+
+Creates a "weak" reference to the value, in that the initial reference count is
+set to 0.
+
+```cpp
+static Napi::FunctionReference Napi::Weak(const Napi::Function& value);
+```
+
+- `[in] value`: The value which is to be referenced.
+
+Returns the newly created reference.
+
+### Persistent
+
+Creates a "persistent" reference to the value, in that the initial reference
+count is set to 1.
+
+```cpp
+static Napi::FunctionReference Napi::Persistent(const Napi::Function& value);
+```
+
+- `[in] value`: The value which is to be referenced.
+
+Returns the newly created reference.
+
+### Constructor
+
+Creates a new empty instance of `Napi::FunctionReference`.
+
+```cpp
+Napi::FunctionReference::FunctionReference();
+```
+
+### Constructor
+
+Creates a new instance of the `Napi::FunctionReference`.
+
+```cpp
+Napi::FunctionReference::FunctionReference(napi_env env, napi_ref ref);
+```
+
+- `[in] env`: The environment in which to construct the `Napi::FunctionReference` object.
+- `[in] ref`: The N-API reference to be held by the `Napi::FunctionReference`.
+
+Returns a newly created `Napi::FunctionReference` object.
+
+### New
+
+Constructs a new instance by calling the constructor held by this reference.
+
+```cpp
+Napi::Object Napi::FunctionReference::New(const std::initializer_list<napi_value>& args) const;
+```
+
+- `[in] args`: Initializer list of JavaScript values as `napi_value` representing
+the arguments of the contructor function.
+
+Returns a new JavaScript object.
+
+### New
+
+Constructs a new instance by calling the constructor held by this reference.
+
+```cpp
+Napi::Object Napi::FunctionReference::New(const std::vector<napi_value>& args) const;
+```
+
+- `[in] args`: Vector of JavaScript values as `napi_value` representing the
+arguments of the constructor function.
+
+Returns a new JavaScript object.
+
+### Call
+
+Calls a referenced Javascript function from a native add-on.
+
+```cpp
+Napi::Value Napi::FunctionReference::Call(const std::initializer_list<napi_value>& args) const;
+```
+
+- `[in] args`: Initializer list of JavaScript values as `napi_value` representing
+the arguments of the referenced function.
+
+Returns a `Napi::Value` representing the JavaScript object returned by the referenced
+function.
+
+### Call
+
+Calls a referenced JavaScript function from a native add-on.
+
+```cpp
+Napi::Value Napi::FunctionReference::Call(const std::vector<napi_value>& args) const;
+```
+
+- `[in] args`: Vector of JavaScript values as `napi_value` representing the
+arguments of the referenced function.
+
+Returns a `Napi::Value` representing the JavaScript object returned by the referenced
+function.
+
+### Call
+
+Calls a referenced JavaScript function from a native add-on.
+
+```cpp
+Napi::Value Napi::FunctionReference::Call(napi_value recv, const std::initializer_list<napi_value>& args) const;
+```
+
+- `[in] recv`: The `this` object passed to the referenced function when it's called.
+- `[in] args`: Initializer list of JavaScript values as `napi_value` representing
+the arguments of the referenced function.
+
+Returns a `Napi::Value` representing the JavaScript object returned by the referenced
+function.
+
+### Call
+
+Calls a referenced JavaScript function from a native add-on.
+
+```cpp
+Napi::Value Napi::FunctionReference::Call(napi_value recv, const std::vector<napi_value>& args) const;
+```
+
+- `[in] recv`: The `this` object passed to the referenced function when it's called.
+- `[in] args`: Vector of JavaScript values as `napi_value` representing the
+arguments of the referenced function.
+
+Returns a `Napi::Value` representing the JavaScript object returned by the referenced
+function.
+
+### Call
+
+Calls a referenced JavaScript function from a native add-on.
+
+```cpp
+Napi::Value Napi::FunctionReference::Call(napi_value recv, size_t argc, const napi_value* args) const;
+```
+
+- `[in] recv`: The `this` object passed to the referenced function when it's called.
+- `[in] argc`: The number of arguments passed to the referenced function.
+- `[in] args`: Array of JavaScript values as `napi_value` representing the
+arguments of the referenced function.
+
+Returns a `Napi::Value` representing the JavaScript object returned by the referenced
+function.
+
+
+### MakeCallback
+
+Calls a referenced JavaScript function from a native add-on after an asynchronous
+operation.
+
+```cpp
+Napi::Value Napi::FunctionReference::MakeCallback(napi_value recv, const std::initializer_list<napi_value>& args, napi_async_context = nullptr) const;
+```
+
+- `[in] recv`: The `this` object passed to the referenced function when it's called.
+- `[in] args`: Initializer list of JavaScript values as `napi_value` representing
+the arguments of the referenced function.
+- `[in] context`: Context for the async operation that is invoking the callback.
+This should normally be a value previously obtained from [Napi::AsyncContext](async_context.md).
+However `nullptr` is also allowed, which indicates the current async context
+(if any) is to be used for the callback.
+
+Returns a `Napi::Value` representing the JavaScript object returned by the referenced
+function.
+
+### MakeCallback
+
+Calls a referenced JavaScript function from a native add-on after an asynchronous
+operation.
+
+```cpp
+Napi::Value Napi::FunctionReference::MakeCallback(napi_value recv, const std::vector<napi_value>& args, napi_async_context context = nullptr) const;
+```
+
+- `[in] recv`: The `this` object passed to the referenced function when it's called.
+- `[in] args`: Vector of JavaScript values as `napi_value` representing the
+arguments of the referenced function.
+- `[in] context`: Context for the async operation that is invoking the callback.
+This should normally be a value previously obtained from [Napi::AsyncContext](async_context.md).
+However `nullptr` is also allowed, which indicates the current async context
+(if any) is to be used for the callback.
+
+Returns a `Napi::Value` representing the JavaScript object returned by the referenced
+function.
+
+### MakeCallback
+
+Calls a referenced JavaScript function from a native add-on after an asynchronous
+operation.
+
+```cpp
+Napi::Value Napi::FunctionReference::MakeCallback(napi_value recv, size_t argc, const napi_value* args, napi_async_context context = nullptr) const;
+```
+
+- `[in] recv`: The `this` object passed to the referenced function when it's called.
+- `[in] argc`: The number of arguments passed to the referenced function.
+- `[in] args`: Array of JavaScript values as `napi_value` representing the
+arguments of the referenced function.
+- `[in] context`: Context for the async operation that is invoking the callback.
+This should normally be a value previously obtained from [Napi::AsyncContext](async_context.md).
+However `nullptr` is also allowed, which indicates the current async context
+(if any) is to be used for the callback.
+
+Returns a `Napi::Value` representing the JavaScript object returned by the referenced
+function.
+
+## Operator
+
+```cpp
+Napi::Value operator ()(const std::initializer_list<napi_value>& args) const;
+```
+
+- `[in] args`: Initializer list of reference to JavaScript values as `napi_value`
+
+Returns a `Napi::Value` representing the JavaScript value returned by the referenced
+function.