Error subexpressions not found with getSubexpression (or errors getter)

[shidel-dev]

In the following example I would expect the errors getter to not return an empty value

parsed = computeEngine.parse("1+++");
parsed.isValid
=> true

evaluated = parsed.evaluate()
evaluated.isValid
=> false

evaluated.errors
=> []

JSON.stringify(evaluated.toJSON())
=> `["Add",["Increment",1],["Error","'missing'",["Latex","'+'"]]]`

[hanshs]

I'll use this issue, I have a similar case where the json includes an error, but the errors getter returns empty

boxed = ce.parse('x=')
boxed.json // ["Equal","x",["Error","'missing'"]]
boxed.errors // []

[arnog]

Pro tip: JSON.stringify(evaluated.toJSON()) is equivalent to evaluated.toString().