javascript - regex js parse string of functions -

i'm looking create regex expression parse string of functions, typically looking this:

"    b ( )     c  d ( 1, 2 )  text(' asdf  sg sf  sd sdf ')  " 

into array spaces removed except spaces within either single or double quotes. ie, this:

['a','b()','c','d(1,2)',"text(' asdf sg sf sd sdf ')"] 

i'm sure type of problem has been around since birth of computing surprised can't find neat regex solution problem on web!

any appreciated!

just mean--a sequence of letters (\w+), maybe (?) followed white space (\s*) , parenthesized (\(.*?\):

var str = "    b ( )     c  d ( 1, 2 )  text(' asdf  sg sf  sd sdf ')  ";    var re = /\w+(\s*\(.*?\))?/g;  //        ^^^                     identifier  //               ^^^^^^^          arglist    // remove spaces in each result, except spaces in "string literals" 'a b'.  function squeeze(str) {    return str.replace(/'.*?'| /g, match => match === ' ' ? '' : match);  }    console.log(str.match(re).map(squeeze));

this cannot handle nested function calls. close impossible regexp.