use directories for structure

node_modules/w3c-hr-time/lib/calculate-clock-offset.js

@@ -14,7 +14,9 @@ const clockIsAccurate = require("./clock-is-accurate");
 function calculateClockOffset() {
   const start = Date.now();
   let cur = start;
-  while (cur === start) {
+  // Limit the iterations, just in case we're running in an environment where Date.now() has been mocked and is
+  // constant.
+  for (let i = 0; i < 1e6 && cur === start; i++) {
     cur = Date.now();
   }