haxe typedarray extern

TypedArray.hx

extern class ArrayBuffer
{
  public function new(byteLength:Int):Void;
  public var byteLength(default, null):Int;
  public function slice(begin:Int, ?end:Int):ArrayBuffer;
}

extern private class ArrayBufferView
{
  public var buffer(default, null):ArrayBuffer;
  public var byteOffset(default, null):Int;
  public var byteLength(default, null):Int;
}

extern class Int8Array extends ArrayBufferView, implements ArrayAccess<Int>
{
  public static var BYTES_PER_ELEMENT:Int;
  public var length:Int;

  @:overload(function(length:Int):Void {})
  @:overload(function(array:Int8Array):Void {})
  @:overload(function(array:Array<Int>):Void {})
  @:overload(function(array:ArrayAccess<Int>):Void {})
  public function new(buffer:ArrayBuffer, ?byteOffset:Int, ?length:Int):Void;

  @:overload(function(array:Array<Int>, ?offset:Int):Void {})
  @:overload(function(array:Int8Array, ?offset:Int):Void {})
  public function set(array:ArrayAccess<Int>, ?offset:Int):Void;

  public function subarray(start:Int, end:Int):Int8Array;
}

extern class Uint8Array extends ArrayBufferView, implements ArrayAccess<Int>
{
  public static var BYTES_PER_ELEMENT:Int;
  public var length:Int;

  @:overload(function(length:Int):Void {})
  @:overload(function(array:Uint8Array):Void {})
  @:overload(function(array:Array<Int>):Void {})
  @:overload(function(array:ArrayAccess<Int>):Void {})
  public function new(buffer:ArrayBuffer, ?byteOffset:Int, ?length:Int):Void;

  @:overload(function(array:Array<Int>, ?offset:Int):Void {})
  @:overload(function(array:Uint8Array, ?offset:Int):Void {})
  public function set(array:ArrayAccess<Int>, ?offset:Int):Void;

  public function subarray(start:Int, end:Int):Uint8Array;
}

extern class Int16Array extends ArrayBufferView, implements ArrayAccess<Int>
{
  public static var BYTES_PER_ELEMENT:Int;
  public var length:Int;

  @:overload(function(length:Int):Void {})
  @:overload(function(array:Int16Array):Void {})
  @:overload(function(array:Array<Int>):Void {})
  @:overload(function(array:ArrayAccess<Int>):Void {})
  public function new(buffer:ArrayBuffer, ?byteOffset:Int, ?length:Int):Void;

  @:overload(function(array:Array<Int>, ?offset:Int):Void {})
  @:overload(function(array:Int16Array, ?offset:Int):Void {})
  public function set(array:ArrayAccess<Int>, ?offset:Int):Void;

  public function subarray(start:Int, end:Int):Int16Array;
}

extern class Uint16Array extends ArrayBufferView, implements ArrayAccess<Int>
{
  public static var BYTES_PER_ELEMENT:Int;
  public var length:Int;

  @:overload(function(length:Int):Void {})
  @:overload(function(array:Uint16Array):Void {})
  @:overload(function(array:Array<Int>):Void {})
  @:overload(function(array:ArrayAccess<Int>):Void {})
  public function new(buffer:ArrayBuffer, ?byteOffset:Int, ?length:Int):Void;

  @:overload(function(array:Array<Int>, ?offset:Int):Void {})
  @:overload(function(array:Uint16Array, ?offset:Int):Void {})
  public function set(array:ArrayAccess<Int>, ?offset:Int):Void;

  public function subarray(start:Int, end:Int):Uint16Array;
}

extern class Int32Array extends ArrayBufferView, implements ArrayAccess<Int>
{
  public static var BYTES_PER_ELEMENT:Int;
  public var length:Int;

  @:overload(function(length:Int):Void {})
  @:overload(function(array:Int32Array):Void {})
  @:overload(function(array:Array<Int>):Void {})
  @:overload(function(array:ArrayAccess<Int>):Void {})
  public function new(buffer:ArrayBuffer, ?byteOffset:Int, ?length:Int):Void;

  @:overload(function(array:Array<Int>, ?offset:Int):Void {})
  @:overload(function(array:Int32Array, ?offset:Int):Void {})
  public function set(array:ArrayAccess<Int>, ?offset:Int):Void;

  public function subarray(start:Int, end:Int):Int32Array;
}

extern class Uint32Array extends ArrayBufferView, implements ArrayAccess<Int>
{
  public static var BYTES_PER_ELEMENT:Int;
  public var length:Int;

  @:overload(function(length:Int):Void {})
  @:overload(function(array:Uint32Array):Void {})
  @:overload(function(array:Array<Int>):Void {})
  @:overload(function(array:ArrayAccess<Int>):Void {})
  public function new(buffer:ArrayBuffer, ?byteOffset:Int, ?length:Int):Void;

  @:overload(function(array:Array<Int>, ?offset:Int):Void {})
  @:overload(function(array:Uint32Array, ?offset:Int):Void {})
  public function set(array:ArrayAccess<Int>, ?offset:Int):Void;

  public function subarray(start:Int, end:Int):Uint32Array;
}

extern class Float32Array extends ArrayBufferView, implements ArrayAccess<Float>
{
  public static var BYTES_PER_ELEMENT:Int;
  public var length:Int;

  @:overload(function(length:Int):Void {})
  @:overload(function(array:Float32Array):Void {})
  @:overload(function(array:Array<Float>):Void {})
  @:overload(function(array:ArrayAccess<Float>):Void {})
  public function new(buffer:ArrayBuffer, ?byteOffset:Int, ?length:Int):Void;

  @:overload(function(array:Array<Float>, ?offset:Int):Void {})
  @:overload(function(array:Float32Array, ?offset:Int):Void {})
  public function set(array:ArrayAccess<Float>, ?offset:Int):Void;

  public function subarray(start:Int, end:Int):Float32Array;
}

extern class Float64Array extends ArrayBufferView, implements ArrayAccess<Float>
{
  public static var BYTES_PER_ELEMENT:Int;
  public var length:Int;

  @:overload(function(length:Int):Void {})
  @:overload(function(array:Float64Array):Void {})
  @:overload(function(array:Array<Float>):Void {})
  @:overload(function(array:ArrayAccess<Float>):Void {})
  public function new(buffer:ArrayBuffer, ?byteOffset:Int, ?length:Int):Void;

  @:overload(function(array:Array<Float>, ?offset:Int):Void {})
  @:overload(function(array:Float64Array, ?offset:Int):Void {})
  public function set(array:ArrayAccess<Float>, ?offset:Int):Void;

  public function subarray(start:Int, end:Int):Float64Array;
}

extern class DataView extends ArrayBufferView
{
  public function new(buffer:ArrayBuffer, ?byteOffset:Int, ?byteLength:Int):Void;

  public function getInt8(byteOffset:Int):Int;
  public function getUint8(byteOffset:Int):Int;
  public function getInt16(byteOffset:Int, ?littleEndian:Bool):Int;
  public function getUint16(byteOffset:Int, ?littleEndian:Bool):Int;
  public function getInt32(byteOffset:Int, ?littleEndian:Bool):Int;
  public function getUint32(byteOffset:Int, ?littleEndian:Bool):Int;
  public function getFloat32(byteOffset:Int, ?littleEndian:Bool):Float;
  public function getFloat64(byteOffset:Int, ?littleEndian:Bool):Float;

  public function setInt8(byteOffset:Int, value:Int):Int;
  public function setUint8(byteOffset:Int, value:Int):Int;
  public function setInt16(byteOffset:Int, value:Int, ?littleEndian:Bool):Int;
  public function setUint16(byteOffset:Int, value:Int, ?littleEndian:Bool):Int;
  public function setInt32(byteOffset:Int, value:Int, ?littleEndian:Bool):Int;
  public function setUint32(byteOffset:Int, value:Int, ?littleEndian:Bool):Int;
  public function setFloat32(byteOffset:Int, value:Float, ?littleEndian:Bool):Float;
  public function setFloat64(byteOffset:Int, value:Float, ?littleEndian:Bool):Float;
}

Is this for all targets, or just for javascript?