Should you use any in TypeScript?

Use the any type when there are no other options, and there are no type definitions available for that particular piece of code you’re working with.

Why we should not use any in angular?

If you use any instead you are basically telling the transpiler that anything goes, you are providing no information about what is stored in a – it can be anything! And therefore the transpiler will allow you to do whatever you want with something defined as any .

Should you use JSDoc with TypeScript?

One huge benefit of using TypeScript and documenting with JSDoc syntax is that you can avoid having to specify JSDoc types in your docs! If you want to read the full specification check out Microsoft’s standard, tsdoc.

Is any bad in TypeScript?

TypeScript is a strict syntactical superset of JavaScript that adds optional static typing to it. In a few words, it makes JavaScript hell stronger and safer language. This is where TypeScript comes into the picture to fill some blanks. …

How do I avoid using TypeScript?

any type can be avoided with more advanced technics such as interface augmentation, type intersection, and the use of generics. We used the keyof keyword to determine the passed property to the filterWith function that we added to the standard Array object.

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Is JSDoc dead?

JSDoc is not dead (far from it), people just don’t frequently use automated docs generation tooling in the JS community.

What is @param in TypeScript?

Params enable methods to receive a variable number of parameters. Basically, if you are using params (… variable name) in TypeScript, the argument passed to the method are changed by the compiler into an element in a temporary array and this array is then used in the receiving methods.

Is JSDoc useful?

JSDoc 3 is an API documentation generator for JavaScript, similar to Javadoc or phpDocumentor. You add documentation comments directly to your source code, right alongside the code itself. I use JSDoc more than 4 years and found it extremely good and useful. Documentation is important to have in a project.

Is TypeScript overrated?

Verdict. The benefits that TypeScript provides over JavaScript are overrated. TypeScript has really failed to deliver by keeping all of the bad parts of JavaScript, effectively inheriting decades of bad design decisions made in JavaScript. The problem with TypeScript is not what it has, but what it doesn’t have.

What is [] in TypeScript?

TypeScript, like JavaScript, allows you to work with arrays of values. Array types can be written in one of two ways. In the first, you use the type of the elements followed by [] to denote an array of that element type: let list : number[] = [1, 2, 3];

What is unknown type in TypeScript?

TypeScript 3.0 introduces a new top type unknown . unknown is the type-safe counterpart of any . Anything is assignable to unknown , but unknown isn’t assignable to anything but itself and any without a type assertion or a control flow based narrowing.

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How do I fix object is type unknown?

Object is of type ‘unknown’. To fix the above error, we can use type guards to check if it’s a number before squaring it.