Advanced TypeScript Programming Projects

Summary

In this chapter, we have built an application that responded to what the user was typing into a text area, and updated a label with converted text. The conversion of this text was handled by classes, each of which had a single responsibility. The reason we concentrated on producing classes that only did one thing was to learn, right from the start, how to use industry best practices to make our code cleaner and less prone to errors, since a well-designed class that only does one thing is less likely to have problems than classes that do lots of different things.

We introduced the visitor and chain-of-responsibility patterns in order to see how we could separate the text processing into deciding whether a line contained markdown and ...