Updates Uint8ArrayConstructor to match MDN documentation. (microsoft#38449)

* Updates Uint8ArrayConstructor to match MDN documentation.

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array/Uint8Array
```
new Uint8Array(); // new in ES2017
new Uint8Array(length);
new Uint8Array(typedArray);
new Uint8Array(object);
new Uint8Array(buffer [, byteOffset [, length]]);
```
While the previous constructors aren't significantly different from the new, it would prevent someone from doing `new Uint8Array(myBuffer, undefined, undefined)` since there was no overload that accepted undefined as a second parameter and buffer as first.
Fixes microsoft#38446

* Fixes constructor defenition for all other typed arrays.

* Renames property to `array` since it is no longer an `arrayOrBuffer`.

Author: Micah Zoltu

src/lib/es5.d.ts

@@ -1946,8 +1946,8 @@ interface Int8Array {
 interface Int8ArrayConstructor {
     readonly prototype: Int8Array;
     new(length: number): Int8Array;
-    new(arrayOrArrayBuffer: ArrayLike<number> | ArrayBufferLike): Int8Array;
-    new(buffer: ArrayBufferLike, byteOffset: number, length?: number): Int8Array;
+    new(array: ArrayLike<number>): Int8Array;
+    new(buffer: ArrayBufferLike, byteOffset?: number, length?: number): Int8Array;
 
     /**
      * The size in bytes of each element in the array.
@@ -2229,8 +2229,8 @@ interface Uint8Array {
 interface Uint8ArrayConstructor {
     readonly prototype: Uint8Array;
     new(length: number): Uint8Array;
-    new(arrayOrArrayBuffer: ArrayLike<number> | ArrayBufferLike): Uint8Array;
-    new(buffer: ArrayBufferLike, byteOffset: number, length?: number): Uint8Array;
+    new(array: ArrayLike<number>): Uint8Array;
+    new(buffer: ArrayBufferLike, byteOffset?: number, length?: number): Uint8Array;
 
     /**
      * The size in bytes of each element in the array.
@@ -2511,8 +2511,8 @@ interface Uint8ClampedArray {
 interface Uint8ClampedArrayConstructor {
     readonly prototype: Uint8ClampedArray;
     new(length: number): Uint8ClampedArray;
-    new(arrayOrArrayBuffer: ArrayLike<number> | ArrayBufferLike): Uint8ClampedArray;
-    new(buffer: ArrayBufferLike, byteOffset: number, length?: number): Uint8ClampedArray;
+    new(array: ArrayLike<number>): Uint8ClampedArray;
+    new(buffer: ArrayBufferLike, byteOffset?: number, length?: number): Uint8ClampedArray;
 
     /**
      * The size in bytes of each element in the array.
@@ -2791,8 +2791,8 @@ interface Int16Array {
 interface Int16ArrayConstructor {
     readonly prototype: Int16Array;
     new(length: number): Int16Array;
-    new(arrayOrArrayBuffer: ArrayLike<number> | ArrayBufferLike): Int16Array;
-    new(buffer: ArrayBufferLike, byteOffset: number, length?: number): Int16Array;
+    new(array: ArrayLike<number>): Int16Array;
+    new(buffer: ArrayBufferLike, byteOffset?: number, length?: number): Int16Array;
 
     /**
      * The size in bytes of each element in the array.
@@ -3074,8 +3074,8 @@ interface Uint16Array {
 interface Uint16ArrayConstructor {
     readonly prototype: Uint16Array;
     new(length: number): Uint16Array;
-    new(arrayOrArrayBuffer: ArrayLike<number> | ArrayBufferLike): Uint16Array;
-    new(buffer: ArrayBufferLike, byteOffset: number, length?: number): Uint16Array;
+    new(array: ArrayLike<number>): Uint16Array;
+    new(buffer: ArrayBufferLike, byteOffset?: number, length?: number): Uint16Array;
 
     /**
      * The size in bytes of each element in the array.
@@ -3356,8 +3356,8 @@ interface Int32Array {
 interface Int32ArrayConstructor {
     readonly prototype: Int32Array;
     new(length: number): Int32Array;
-    new(arrayOrArrayBuffer: ArrayLike<number> | ArrayBufferLike): Int32Array;
-    new(buffer: ArrayBufferLike, byteOffset: number, length?: number): Int32Array;
+    new(array: ArrayLike<number>): Int32Array;
+    new(buffer: ArrayBufferLike, byteOffset?: number, length?: number): Int32Array;
 
     /**
      * The size in bytes of each element in the array.
@@ -3637,8 +3637,8 @@ interface Uint32Array {
 interface Uint32ArrayConstructor {
     readonly prototype: Uint32Array;
     new(length: number): Uint32Array;
-    new(arrayOrArrayBuffer: ArrayLike<number> | ArrayBufferLike): Uint32Array;
-    new(buffer: ArrayBufferLike, byteOffset: number, length?: number): Uint32Array;
+    new(array: ArrayLike<number>): Uint32Array;
+    new(buffer: ArrayBufferLike, byteOffset?: number, length?: number): Uint32Array;
 
     /**
      * The size in bytes of each element in the array.
@@ -3919,8 +3919,8 @@ interface Float32Array {
 interface Float32ArrayConstructor {
     readonly prototype: Float32Array;
     new(length: number): Float32Array;
-    new(arrayOrArrayBuffer: ArrayLike<number> | ArrayBufferLike): Float32Array;
-    new(buffer: ArrayBufferLike, byteOffset: number, length?: number): Float32Array;
+    new(array: ArrayLike<number>): Float32Array;
+    new(buffer: ArrayBufferLike, byteOffset?: number, length?: number): Float32Array;
 
     /**
      * The size in bytes of each element in the array.
@@ -4193,8 +4193,8 @@ interface Float64Array {
 interface Float64ArrayConstructor {
     readonly prototype: Float64Array;
     new(length: number): Float64Array;
-    new(arrayOrArrayBuffer: ArrayLike<number> | ArrayBufferLike): Float64Array;
-    new(buffer: ArrayBufferLike, byteOffset: number, length?: number): Float64Array;
+    new(array: ArrayLike<number>): Float64Array;
+    new(buffer: ArrayBufferLike, byteOffset?: number, length?: number): Float64Array;
 
     /**
      * The size in bytes of each element in the array.