From a5c417748112e9d88d9ca522561e338eb9ba9007 Mon Sep 17 00:00:00 2001
From: Minteck <contact@minteck.org>
Date: Fri, 25 Feb 2022 18:08:27 +0100
Subject: Initial commit

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+## Miscellaneous V8 Helpers
+
+ - <a href="#api_nan_utf8_string"><b><code>Nan::Utf8String</code></b></a>
+ - <a href="#api_nan_get_current_context"><b><code>Nan::GetCurrentContext()</code></b></a>
+ - <a href="#api_nan_set_isolate_data"><b><code>Nan::SetIsolateData()</code></b></a>
+ - <a href="#api_nan_get_isolate_data"><b><code>Nan::GetIsolateData()</code></b></a>
+ - <a href="#api_nan_typedarray_contents"><b><code>Nan::TypedArrayContents</code></b></a>
+
+
+<a name="api_nan_utf8_string"></a>
+### Nan::Utf8String
+
+Converts an object to a UTF-8-encoded character array. If conversion to a string fails (e.g. due to an exception in the toString() method of the object) then the length() method returns 0 and the * operator returns NULL. The underlying memory used for this object is managed by the object.
+
+An implementation of [`v8::String::Utf8Value`](https://v8docs.nodesource.com/node-8.16/d4/d1b/classv8_1_1_string_1_1_utf8_value.html) that is consistent across all supported versions of V8.
+
+Definition:
+
+```c++
+class Nan::Utf8String {
+ public:
+  Nan::Utf8String(v8::Local<v8::Value> from);
+
+  int length() const;
+
+  char* operator*();
+  const char* operator*() const;
+};
+```
+
+<a name="api_nan_get_current_context"></a>
+### Nan::GetCurrentContext()
+
+A call to [`v8::Isolate::GetCurrent()->GetCurrentContext()`](https://v8docs.nodesource.com/node-8.16/d5/dda/classv8_1_1_isolate.html#a81c7a1ed7001ae2a65e89107f75fd053) that works across all supported versions of V8.
+
+Signature:
+
+```c++
+v8::Local<v8::Context> Nan::GetCurrentContext()
+```
+
+<a name="api_nan_set_isolate_data"></a>
+### Nan::SetIsolateData()
+
+A helper to provide a consistent API to [`v8::Isolate#SetData()`](https://v8docs.nodesource.com/node-8.16/d5/dda/classv8_1_1_isolate.html#a7acadfe7965997e9c386a05f098fbe36).
+
+Signature:
+
+```c++
+void Nan::SetIsolateData(v8::Isolate *isolate, T *data)
+```
+
+
+<a name="api_nan_get_isolate_data"></a>
+### Nan::GetIsolateData()
+
+A helper to provide a consistent API to [`v8::Isolate#GetData()`](https://v8docs.nodesource.com/node-8.16/d5/dda/classv8_1_1_isolate.html#aabd223436bc1100a787dadaa024c6257).
+
+Signature:
+
+```c++
+T *Nan::GetIsolateData(v8::Isolate *isolate)
+```
+
+<a name="api_nan_typedarray_contents"></a>
+### Nan::TypedArrayContents<T>
+
+A helper class for accessing the contents of an ArrayBufferView (aka a typedarray) from C++.  If the input array is not a valid typedarray, then the data pointer of TypedArrayContents will default to `NULL` and the length will be 0.  If the data pointer is not compatible with the alignment requirements of type, an assertion error will fail.
+
+Note that you must store a reference to the `array` object while you are accessing its contents.
+
+Definition:
+
+```c++
+template<typename T>
+class Nan::TypedArrayContents {
+ public:
+  TypedArrayContents(v8::Local<Value> array);
+
+  size_t length() const;
+
+  T* const operator*();
+  const T* const operator*() const;
+};
+```
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