Initial import with skill sheet working

node_modules/last-run/index.js

@@ -0,0 +1,42 @@
+'use strict';
+
+var assert = require('assert');
+
+var runtimes = new WeakMap();
+
+function isFunction(fn) {
+  return typeof fn === 'function';
+}
+
+function lastRun(fn, timeResolution) {
+  assert(isFunction(fn), 'Only functions can check lastRun');
+
+  var time = runtimes.get(fn);
+
+  if (time == null) {
+    return;
+  }
+
+  var resolution = parseInt(timeResolution, 10) || 1;
+
+  return time - (time % resolution);
+}
+
+function capture(fn, timestamp) {
+  assert(isFunction(fn), 'Only functions can be captured');
+
+  timestamp = timestamp || Date.now();
+
+  runtimes.set(fn, timestamp);
+}
+
+function release(fn) {
+  assert(isFunction(fn), 'Only functions can be captured');
+
+  runtimes.delete(fn);
+}
+
+lastRun.capture = capture;
+lastRun.release = release;
+
+module.exports = lastRun;