Function cached

src/util/helper.js:9–15

(fn)

const console = getConsole();

function cached(fn) {
  const cache = Object.create(null);
  return function cachedFn(str) {
    const hit = cache[str];
    return hit || (cache[str] = fn(str));
  };
}

const regex = /-(\w)/g;
const camelize = cached(str =>