We can combine multiple regexps into one using source property and | (disjunction). For example, a humble regexp to get dependency:
js
const regexps = [
/(?:(?:require|import|url)\(['"`]([^'"]+)['"`]\))/g,
/(?:(?:\@import|from|import)\s+['"]([^'"]+)['"])/g,
/(?:(?:url)\(([^'"]+)\))/g,
/(?:(?:[sS][rR][cC]=)['"]([^'"]+)['"])/g,
];
const combinedRegexp = new RegExp(regexps.map((d) => d.source).join("|"), "g");
But this long complex regexp is not efficient a lot than running several smaller ones. Because those parts have different prefix.
See: