Snake to Camel Case

snake_toCamel.js

m = /\s+(([A-Z0-9]+_)*([A-Z0-9]+))\s+/g

locations = [];

while (match = m.exec(x)) {
    console.log(match)
    str = match[1].split('_')
    .map(s => s[0].toUpperCase() + s.substring(1).toLowerCase())
    .join('')
    locations.push({
        o: match[0], p: match[1],
        str, index: match.index,
    });
}

while (l = locations.pop()) {
    x = x.substring(0, l.index) +
        l.o.replace(l.p, l.str) +
         x.substring(l.index + l.o.length)
}