Error: Can't access lexical declaration

Question

let textBytes = ctypes.uint8_t("hello"); 
let a = new SECItem;
a.type = siBuffer;
a.data = textBytes.address();
a.len = textBytes.length;

I got ReferenceError: can't access lexical declaration textBytes before initialization.

Answer 1

I can't reproduce the reference error you are getting, but I think change

let textBytes = ctypes.uint8_t("hello"); 

as this throws TypeError: expected type uint8_t, got "hello" to

let textBytes = ctypes.uint8_t.array()("hello"); 

This will give you a null-terminated string, of length 6. If you want it to be length 5, no null termination then do let textBytes = ctypes.uint8_t.array(5)("hello");

as I am thinking, change

let a = new SECItem;

to

let a = SECItem();

or let a = new SECItem(); they are both same.

If that doesn't fix it, please share the structure of SECItem and what is siBuffer.