typescript Archives - Page 10 of 10

How to implement class constants?

In TypeScript, the const keyword cannot be used to declare class properties. Doing so causes the compiler to an error with “A class ...

April 30, 2022
0 Comments

How do I dynamically assign properties to an object in TypeScript?

If I wanted to programatically assign a property to an object in Javascript, I would do it like this: var obj = {}; ...

April 28, 2022
0 Comments

get and set in TypeScript

I’m trying to create get and set method for a property: private _name: string; Name() { get: { return this._name; } set: { ...

April 19, 2022
0 Comments

In Typescript, what is the ! (exclamation mark / bang) operator when dereferencing a member?

When looking at the sourcecode for a tslint rule, I came across the following statement: if (node.parent!.kind === ts.SyntaxKind.ObjectLiteralExpression) { return; } Notice ...

April 16, 2022
0 Comments

How do you explicitly set a new property on `window` in TypeScript?

I setup global namespaces for my objects by explicitly setting a property on window. window.MyNamespace = window.MyNamespace || {}; TypeScript underlines MyNamespace and ...

April 16, 2022
0 Comments

How to convert a string to number in TypeScript?

Given a string representation of a number, how can I convert it to number type in TypeScript? var numberString: string = "1234"; var ...

April 13, 2022
0 Comments

Interfaces vs Types in TypeScript

What is the difference between these statements (interface vs type) in TypeScript? interface X { a: number b: string } type X = ...

April 11, 2022
0 Comments