Returning zero from user-defined function treated as returning null

[AnyhowStep]

db = new Database();
db.create_function(
    "returnZero",
    () => 0
);
db.exec("SELECT returnZero(), 0");

Expected:

returnZero()	0
0	0

Actual:

returnZero()	0
null	0

[AnyhowStep]

Tracked the bug down to this line of code.

[AnyhowStep]

!0 is true.

So, it thinks 0 is null

[AnyhowStep]

https://github.com/kripken/sql.js/blob/master/dist/sql-wasm-debug.js#L764-L767

[AnyhowStep]

https://github.com/kripken/sql.js/blob/master/src/api.coffee#L484-L495

Seems like it was fixed recently, but no npm package was published, and the dist was not updated.