Chapter 2: arrow functions

Chapter02/working-with-files/callback-hell.js

@@ -1,5 +0,0 @@
-first(args, function () {
-  second(args, function () {
-    third(args, function () {});
-  });
-});

Chapter02/working-with-files/readWriteAsync.js

@@ -3,7 +3,7 @@ const path = require("path");
 
 const filepath = path.join(process.cwd(), "hello.txt");
 
-fs.readFile(filepath, "utf8", function (err, contents) {
+fs.readFile(filepath, "utf8", (err, contents) => {
   if (err) {
     return console.log(err);
   }

Chapter02/working-with-files/readWriteAsync2.js

@@ -3,14 +3,14 @@ const path = require("path");
 
 const filepath = path.join(process.cwd(), "hello.txt");
 
-fs.readFile(filepath, "utf8", function (err, contents) {
+fs.readFile(filepath, "utf8", (err, contents) => {
   if (err) {
     return console.log(err);
   }
   console.log("File Contents:", contents);
   const upperContents = contents.toUpperCase();
 
-  fs.writeFile(filepath, upperContents, function (err) {
+  fs.writeFile(filepath, upperContents, (err) => {
     if (err) throw err;
     console.log("File updated.");
   });

Chapter02/working-with-files/readWriteAsyncNamed.js

@@ -3,7 +3,7 @@ const path = require("path");
 
 const filepath = path.join(process.cwd(), "hello.txt");
 
-fs.readFile(filepath, "utf8", function (err, contents) {
+fs.readFile(filepath, "utf8", (err, contents) => {
   if (err) {
     return console.log(err);
   }

Chapter02/working-with-files/readWriteAsyncTimeout.js

@@ -3,7 +3,7 @@ const path = require("path");
 
 const filepath = path.join(process.cwd(), "hello.txt");
 
-fs.readFile(filepath, "utf8", function (err, contents) {
+fs.readFile(filepath, "utf8", (err, contents) => {
   if (err) {
     return console.log(err);
   }