When JS, operations on pointer casted from ref object raises Runtime-Errors

[litlighilit]

Description

There are two kinds of errors I've found:

Given here are two variables:

type O = ref object
var p1, p2: O

1. TypeError: Cannot read properties of null (reading 'undefined')

func `+`(a: pointer): int = cast[int](a)
discard +cast[pointer](p1)

2. SyntaxError: Unexpected token '=='

discard cast[pointer](p1) == cast[pointer](p2)

(here an odd == token is generated with no operands)
And I know p1 == p2 just works and is preferred.

Nim Version

Nim Compiler Version 2.1.1 [Linux: amd64]
Compiled at 2024-06-27
Copyright (c) 2006-2024 by Andreas Rumpf

git hash: 828cd58
active boot switches: -d:release

Current Output

    result_520093703 = a_p0[a_p0_Idx];
                           ^
TypeError: Cannot read properties of null (reading 'undefined')

(( ==  && p1_520093699[0] == p2_520093700[0]));
   ^^
SyntaxError: Unexpected token '=='

Expected Output

(runs without error)

Possible Solution

No response

Additional Information

For the second, if:

func `+`(a, b: pointer): int = cast[int](a) + cast[int](a)
discard cast[pointer](p1) + cast[pointer](p2)

Then error is:

    result_520093707 = addInt(a_p0[a_p0_Idx], a_p0[a_p0_Idx]);
                                                           ^

TypeError: Cannot read properties of null (reading 'null')

donno why the two operands are just the same.