JSFiddle - React, Tailwind, and code Playground

JavaScript

function trimmer(str) {
    var trimmed = str.split('  ').join(' ');
    if (trimmed.indexOf('  ') != -1) return trimmer(trimmed);
    else return trimmed;
}

var str = "00000.00000    111111111.111111111111  33333333"

console.log(trimmer(str));