Get each monomial from a polynomial, with its power

polynomial.js

/**
Based on
https://stackoverflow.com/questions/50035160/extract-variables-coeffcients-powers-from-a-polynomial-string-javascript#answers
*/
function  extractPolynomial(polynomialStr) {
    let arr = [];

    const eachMono = polynomialStr.match(/[+-]?\d*(x|y)(\^\d)*((y|x)(\^\d)*)*(\(([^()]*|\(([^()]*|\([^()]*\))*\))*\))?|[+-\s]\d+(\(([^()]*|\(([^()]*|\([^()]*\))*\))*\))?/g);
    
    eachMono.forEach((match) => {
        const monomium = match.match(/([a-z]\^\d|[a-z])/gi) ? match.match(/([a-z]\^\d|[a-z])/gi).join("") : " ";
        const coeff = parseFloat(match.split(monomium)[0]) || 1;

        let power = 1;
        let variableValues = { variable: "", power: 0 };

        if (monomium != " ") {
            let tempVars = monomium.match(/([a-z]\^\d|[a-z])/gi);
            for (let i = 0; i < tempVars.length; i++) {
                variableValues.variable = tempVars[i].match(/[a-z]/gi)[0];
                let tempV = tempVars[i].split("^");
                if (tempV.length > 1) {
                    variableValues.power = parseFloat(tempV[1]);
                } else {
                    variableValues.power = 1;
                }
            }
        }

        arr.push({
            coeff: coeff,
            variableValues: variableValues
        });
    });
    return arr;
};