https://miketaylr.com/pres/brazil-js-2017/ cssPropToIDL

cssPropToIDL.js

function cssPropToIDL(prop, lowercaseFlag = false) {
    let output = "";
    let uppercaseNext;

    if (lowercaseFlag) {
      prop = prop.slice(1);
    }

    for (let char of prop) {
      if (char === String.fromCodePoint("0x002D")) {
        uppercaseNext = true;
        continue;
      }
      if (uppercaseNext) {
        uppercaseNext = undefined;
        output += char.toUpperCase();
      } else {
        output += char;
      }
    }
    return output;
}