We’d like to acknowledge the work of editors Cynthia Kane and Toni Arritola. Toni stepped into the process long after work on the book started, but she propelled us forward and to the finish line. It isn’t an exaggeration to say that Toni is the reason you’re able to read this book. Our technical proofreader, Luis Carlos Sanchez Gonzalez, was an invaluable help. Thanks also to the Manning reviewers, whose insightful comments helped make this book the best it could be: Bradley Suira, Desmond Horsley, Dinesh Arora, Jason Pike, Jim Schmehil, Nathan Roberts, Rafael Avila Martínez, Rainer Jeschor, Sergey Evsikov, Shobha Iyer, Siva Kumar Boyapati, Steve Atchue, Tahir Awan, and Zorodzayi Mukuya.

Jesse would like to acknowledge his former manager, Shawn Ward, who taught him the value of testing. Ward Bell also deserves credit for helping debug tests, writing the testing documentation on Angular.io, and insisting that he use the Angular CLI, which greatly changed the direction of the book for the better.

Heartfelt thanks go to Brad Green for getting Jesse interested in contributing to Angular in the first place and Peter Bacon Darwin for bringing him into the Angular organization. Finally, Jesse would like the thank his coauthors, Corinna Cohn, Craig Nishina, and Michael Giambalvo, for coming on board and helping to complete the book. The book wouldn’t be what it is now without their valuable contributions.

Corinna would like to thank Samantha Quiñones, whose service to the developer community as a teacher and speaker inspired her to learn about unit testing, and who encouraged her to introduce testing practices to her organization. She also thanks Igor Minar and Miško Hevery for spending their time in person teaching newbie developers the basics of Angular and inspiring developers like Corinna to take a step into a larger world.

Craig would like to thank his previous team, Julie Ralph, Michael Giambalvo, and Sammy Jelin, for ramping him up on Protractor and reviewing all of his pull requests. He’d also like to thank Evan Harris, who years ago took him to his first Seattle Google Developers Group Meetup to learn about AngularJS.

Michael would like to thank Craig Nishina for bringing him in on this book. Special thanks to Julie Ralph, Sammy Jelin, and Craig Nishina for all the hard work they did on Protractor. Thanks to the Angular team for being consistently focused on creating a great community!