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TypeScript is a popular programming language that many coders use when building applications. It is a superset of JavaScript, which means that it includes all the features of JavaScript, but also has some extra features. One of these extra features is the strict null check, which helps coders avoid common programming errors.
Strict null checks are a feature of TypeScript that helps coders prevent errors caused by null or undefined values. In JavaScript, it is possible to use a variable before it has been assigned a value, and this can cause unexpected behavior. For example, if you try to access a property of an undefined object, your program will throw an error.
With strict null checks, TypeScript will catch these types of errors before your code even runs. This means that you can catch and fix these issues early in the development process, which can save you a lot of time and frustration. Strict null checks also help you write better, more reliable code, as you can be sure that your variables always have the values that you expect them to have.
Another advantage of strict null checks is that they make it easier for coders to understand the code that they are working on. When strict null checks are enabled, TypeScript will enforce a set of rules for how variables can be used. This makes it clear what values a variable can contain and what it cannot, which makes it easier for other coders to understand your code.
Overall, strict null checks are a valuable tool for coders who use TypeScript. They help you avoid common programming errors, write more reliable code, and make your code easier to understand. If you are new to TypeScript, it is highly recommended that you learn how to use strict null checks and start using them in your projects.
TypeScript for Coders – Chapter 11 : Strict null checks
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