Question: strange behavior with ===?

[vanodevium]

Is there any chance to support === for subscript? Or it works like this by design?

import subscript from 'subscript';

const answers = ['a'];

console.log(subscript('answers.length === 1 && answers[0] === "a"')({answers}));  // throws error

but if I import justin, there are no problem

import subscript from 'subscript';
import justin from 'subscript/justin';

const answers = ['a'];

console.log(subscript('answers.length === 1 && answers[0] === "a"')({answers})); // true

[dy]

=== is js-specific operator, subscript doesn't support it out of box, it only supports common operators for languages.
Yes, either use justin (js subset) or add operator manually:

import subscript, { binary, operator, compile, token } from '../subscript.js'

binary('===', 9)
operator('===', (a, b) => (a = compile(a), b = compile(b), ctx => a(ctx) === b(ctx)))