Initial commit 🚀

2-how-node-works/final/event-loop.js

@@ -0,0 +1,33 @@
+const fs = require("fs");
+const crypto = require("crypto");
+
+const start = Date.now();
+process.env.UV_THREADPOOL_SIZE = 4;
+
+setTimeout(() => console.log("Timer 1 finished"), 0);
+setImmediate(() => console.log("Immediate 1 finished"));
+
+fs.readFile("test-file.txt", () => {
+  console.log("I/O finished");
+  console.log("----------------");
+
+  setTimeout(() => console.log("Timer 2 finished"), 0);
+  setTimeout(() => console.log("Timer 3 finished"), 3000);
+  setImmediate(() => console.log("Immediate 2 finished"));
+
+  process.nextTick(() => console.log("Process.nextTick"));
+
+  crypto.pbkdf2Sync("password", "salt", 100000, 1024, "sha512");
+  console.log(Date.now() - start, "Password encrypted");
+
+  crypto.pbkdf2Sync("password", "salt", 100000, 1024, "sha512");
+  console.log(Date.now() - start, "Password encrypted");
+
+  crypto.pbkdf2Sync("password", "salt", 100000, 1024, "sha512");
+  console.log(Date.now() - start, "Password encrypted");
+
+  crypto.pbkdf2Sync("password", "salt", 100000, 1024, "sha512");
+  console.log(Date.now() - start, "Password encrypted");
+});
+
+console.log("Hello from the top-level code");