/*
     * https://users.rust-lang.org/t/how-to-implement-index-range-usize-for-a-custom-slice-type-with-additional-data/66201
     *
     * buffer.region(4, 16).into::<JsUint32Array>
     * buffer.from(4).to(16).into::<JsUint32Array>
     * buffer[4..16].to_typed_array::<u32, _>(&mut cx)
     * JsUint32Array::from_region(&mut cx, buffer[4..16])
     * buffer.region(4..16).to_typed_array::<u32, _>(&mut cx)
     * JsUint32Array::from_region(&mut cx, buffer.region(4..16))
     * JsUint32Array::from_buffer_region(&mut cx, buffer, 4, 16))
     *
     * buffer.region::<u32>(4, 2).to_typed_array(&mut cx)
     * JsUint32Array::from_region(&mut cx, buffer.region(4, 2))
     */