convert regex from named capture groups feature into simple regex pattern

I have a string produit, and I wanna extract from it a bunch of properties like code_barre,qte…
I’ve tried that with ES2018’s solution which is named capture groups:

let produit = "8234507124671 36,000 5,00 7,00 167,40 DH";
let extractRe = /^(?<code_barre>d*)s+(?<qte>d*,d*)s+(?<prix_unitaire>d*,d*)s+(?<remise>d*,d*)s+(?<montant>d*,d*sw*)$/;
console.log(extractRe.exec(produit).groups)

And it works and I get those properties from that string, BUT if that string produit changed(doesn’t respect the regex pattern), my regex .exec(produit).groups will fail :/

So to avoid this error, I would use first an if statement to check if the string respect that pattern.

I know I need to use .test, But the question is

Is there a way to take an adventage of already pattern extractRe to convert it into a pattern we could use in .test regex method?

something like that:

'^(?<code_barre>d*)s+(?<qte>d*,d*)s+(?<prix_unitaire>d*,d*)s+(?<remise>d*,d*)s+(?<montant>d*,d*sw*)$'.replace(/(.*?)/g,'');
//output: 
'^s+s+s+s+$'
//expected output:
'd*s+d*,d*s+d*,d*s+d*,d*s+d*,d*sw*'

to Finally, I can run exec without errors :/

let produit = "8234507124671 36,000 5,00 7,00 167,40 DH";
let extractRe = /^(?<code_barre>d*)s+(?<qte>d*,d*)s+(?<prix_unitaire>d*,d*)s+(?<remise>d*,d*)s+(?<montant>d*,d*sw*)$/;
if(/^d*s+d*,d*s+d*,d*s+d*,d*s+d*,d*sw*$/.test(produit))
    console.log(extractRe.exec(produit).groups)