src/vs/base/common/diff/diff.ts/MyArray/Copy2
class MyArray:	public static Copy2(sourceArray: Int32Array, sourceIndex: number, destinationArray: Int32Array, destinationIndex: number, length: number) {
		for (let i = 0; i < length; i++) {
			destinationArray[destinationIndex + i] = sourceArray[sourceIndex + i];
		}
	}