It’s from Microsoft, which has ample experience creating IDEs.It has built in code-hinting for JavaScript.I recommend Visual Studio Code (VS Code), for the following reasons: For example, both Sublime and Atom have type-hinting plugins. You can either use a JavaScript-oriented IDE such as Webstorm or VisualStudio Code, or if you have a favorite text editor, see if it has a type-hinting plugin that supports JavaScript. The first thing you need is a code editor that recognizes and supports the concept of types in JavaScript. We’ll go over two ways to “tell” your IDE (and other developers) about types, and how to load type information for third-party libraries as well.īefore writing type annotations, however, you need a tool that can read them. This post will examine a couple ways to clue-in your IDE to the types of the variables, function parameters, and return values in your program so the IDE can clue you in on how to use them. Programmers who use strongly-typed languages such as Java and IDEs such as Eclipse take automated code-assistance for granted. On projects of any size, code hinting reduces typos, makes coding easier, and reduces the need to check documentation. There’s no way for the IDE to know it’s an array… unless you tell it! That’s where code hinting comes in. If your IDE or editor doesn’t know that animals will eventually be an array, there’s no way for it to helpfully tell you that animals has the property length and the method map, among others. When you get to this point, it’s helpful to offload “checking that function signature” to your IDE or text editor. But when your application spans dozens or hundreds of files, or the number of developers working on it begins to climb, this solution can quickly lead to a huge mess. If your program fits in one or two files, you can just check the documentation to determine any given type. The first and most obvious solution is to document all your types. So how do you make sure that people use variables as they were intended? There’s no way to know whether animals is an array, a string, a function, or something else.
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