docs: function getCachedBinary() {
    var i,
      cachePath,
      cacheBinary,
      cachePathCandidates = getCachePathCandidates(),
      binaryName = getBinaryName();
  
    for (i = 0; i < cachePathCandidates.length; i++) {
      cachePath = path.join(cachePathCandidates[i], pkg.name, pkg.version);
      cacheBinary = path.join(cachePath, binaryName);
  
      if (fs.existsSync(cacheBinary)) {
        return cacheBinary;
      }
    }
  
    return '';
  }