Why use triple-equal (===) in TypeScript? - Stack Overflow
Jul 20, 2019 · In JavaScript, it's commonly seen as best practice to use === instead of ==, for obvious and well-known reasons. In TypeScript, which is one to be preferred? Is there even …
Does Typescript support the ?. operator? (And, what's it called?)
Jan 17, 2017 · Yes. As of TypeScript 3.7 (released on November 5, 2019), this feature is supported and is called Optional Chaining: At its core, optional chaining lets us write code …
In TypeScript, what is the ! (exclamation mark / bang) operator …
Feb 16, 2017 · In TypeScript, what is the ! (exclamation mark / bang) operator when dereferencing a member? Asked 8 years, 8 months ago Modified 5 months ago Viewed 652k …
What is TypeScript and why should I use it instead of JavaScript?
What is the TypeScript language? What can it do that JavaScript or available libraries cannot do, that would give me reason to consider it?
Interfaces vs Types in TypeScript - Stack Overflow
Declaration Merging The key aspect to interfaces in typescript that distinguish them from types is that they can be extended with new functionality after they've already been declared. A …
Typescript: Check "typeof" against custom type - Stack Overflow
Jul 26, 2018 · TypeScript can infer types from values, but you can't generate values from types. const fruit = ["apple", "banana", "grape"] as const; export type Fruit = (typeof fruit)[number]; …
In TypeScript, what does <T> mean? - Stack Overflow
Apr 3, 2018 · What does the <T> mean? That is TypeScript's Generics declaration. Excerpt: A major part of software engineering is building components that not only have well-defined and …
Defining TypeScript callback type - Stack Overflow
Oct 30, 2012 · I have defined function with typescript without defining a type. You can define a function with callback type parameter like below. You can define multiple return values in the …
How do I dynamically assign properties to an object in TypeScript ...
Learn how to dynamically assign properties to an object in TypeScript with this helpful guide.
What does the pipe(|) mean in typescript? - Stack Overflow
Jul 28, 2016 · +1 -- TypeScript supports algabraic data types. If you're from an OOP background these are probably new to you, and can be very powerful. At a high level they are language …