feat: initial commit of Railtrack Pro prototype with complete test suite

node_modules/undici/lib/util/promise.js

@@ -0,0 +1,28 @@
+'use strict'
+
+/**
+ * @template {*} T
+ * @typedef {Object} DeferredPromise
+ * @property {Promise<T>} promise
+ * @property {(value?: T) => void} resolve
+ * @property {(reason?: any) => void} reject
+ */
+
+/**
+ * @template {*} T
+ * @returns {DeferredPromise<T>} An object containing a promise and its resolve/reject methods.
+ */
+function createDeferredPromise () {
+  let res
+  let rej
+  const promise = new Promise((resolve, reject) => {
+    res = resolve
+    rej = reject
+  })
+
+  return { promise, resolve: res, reject: rej }
+}
+
+module.exports = {
+  createDeferredPromise
+}