use deno_runtime::deno_napi::*;
use std::cell::Cell;
unsafe fn get_backing_store_slice(
backing_store: &mut v8::SharedRef<v8::BackingStore>,
byte_offset: usize,
byte_length: usize,
) -> &mut [u8] {
let cells: *const [Cell<u8>] =
&backing_store[byte_offset..byte_offset + byte_length];
let mut bytes = cells as *mut [u8];
&mut *bytes
}
pub fn get_array_buffer_ptr(ab: v8::Local<v8::ArrayBuffer>) -> *mut u8 {
let mut backing_store = ab.get_backing_store();
let byte_length = ab.byte_length();
let mut slice =
unsafe { get_backing_store_slice(&mut backing_store, 0, byte_length) };
slice.as_mut_ptr()
}