Well this is awesome...

[fullmetal-fred]

Hey there @burggraf, nice job!
I'm wondering if there's any progress getting this added as an official extension or maybe on dbdev as a pglet?

I was wanting to use JSONata within postgres functions directly...thanks to this I can!

create or replace function evaluate_jsonata(
    in jsonata_expression text,
    in json_data jsonb,
    out result jsonb,
    out error text
)
returns SETOF record as $$
    
    try {
        const jsonata = require('https://cdn.jsdelivr.net/npm/jsonata@1.8.6/jsonata.min.js');
        const expression = jsonata(jsonata_expression);
        const result = expression.evaluate(json_data);
        return {
            result: result,
            error: null
    };
    } catch (e) {
        return {
            result: null,
            error: e.message
        };
    }

$$ language plv8;

select result from test_jsonata('$sum(*)','{"a":1,"b":2}')
returns 3 🤘🏻

So cool!!