blurShapeBranch.js

const doStuff = (stuff) => {
    if (stuff) {
        if (devFlag) {
            log('perf start');
            doRecursion();
            log('perf end');
            return;
        }
        doRecursion();
        end();
    } else {
        throw new Error('No stuff!');
    }
    return null;
};