RegExp to find characters not in symmetric (quotes) or asymmetric (brackes) groups

findCharRegExp.js

// Create regExp to find commas that are not within double quote, single quote, parantheses, brackets or braces:
const argsSplitRegExp = findCharRegExp(",", { notInSymm: ["\"", "'"], notInAsymm: ["[]", "()", "{}"]});

// Usage (split at found commas):
"age  , [32  , 44]  , abc".split(argsSplitRegExp);

// RegExp builder
function findCharRegExp(splittingChar, options) {
    const notInSymmRE = (char) => `(?=(?:[^\\${char}]*\\${char}[^\\${char}]*\\${char})*[^\\${char}]*$)`;
    const notInAsymmRE = (chars) => `(?![^\\${chars[0]}]*\\${chars[1]})`;
    options = options || {};
    const notInSymm = options.notInSymm || [];
    const notInAsymm = options.notInAsymm || [];

    let regExpStr;
        
    if (options.preserveWhitespaces) {
        regExpStr = splittingChar;
    }
    else {
        regExpStr = `\\s*${splittingChar}\\s*`;
    }

    notInSymm.forEach((char) => {
        regExpStr += notInSymmRE(char);
    });

    notInAsymm.forEach((chars) => {
        regExpStr += notInAsymmRE(chars);
    });

    return new RegExp(regExpStr);
}