Why use triple-equal (===) in TypeScript? - Stack Overflow
Jul 20, 2019 · JavaScript as the target of compilation (TypeScript design goal 4) All TypeScript must be representable in JavaScript. Further, it should be idiomatic JavaScript where possible. …
When should I use ?? (nullish coalescing) vs || (logical OR)?
The ?? operator was added to TypeScript 3.7 back in November 2019. And more recently, the ?? operator was included in ES2020 , which is supported by Node 14 (released in April 2020). …
What's the meaning of "=>" in TypeScript? (Fat Arrow)
In TypeScript, everything that comes after the : but before an = (assignment) is the type information. So your example is saying that the type of MakePoint is a function that takes 0 …
Does Typescript support the ?. operator? (And, what's it called?)
Jan 17, 2017 · 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 where …
In TypeScript, what is the ! (exclamation mark / bang) operator …
Feb 16, 2017 · It tells TypeScript to leave the expressions result as it is and pass it to JavaScript. It allows the use of JavaScript semantics in TypeScript, such as using loose equality (with the …
typescript - 'unknown' vs. 'any' - Stack Overflow
Jul 20, 2018 · TypeScript 3.0 introduces unknown type, according to their wiki: unknown is now a reserved type name, as it is now a built-in type. Depending on your intended use of unknown, …
Is key-value pair available in TypeScript? - Stack Overflow
Apr 7, 2016 · KeyValue interface exists in angular library that uses typescript. So you have this generic interface to use if your project is angular. Or you can use its declaration to get a nice …
Sort an array of objects in typescript? - Stack Overflow
I guess that you do not understand function passed as argument of sort method. The function always has two arguments (the same type what objects in your array) and it shows how to sort …
What is TypeScript and why should I use it instead of JavaScript ...
TypeScript is a superset of the JavaScript language that has a single open-source compiler and is developed mainly by a single vendor: Microsoft. The goal of TypeScript is to help catch …
How do I dynamically assign properties to an object in TypeScript ...
TypeScript is used to catch (potential) errors at compile time. If you cast to any to mute errors then you lose the power of typing and may as well go back to pure JS. any should ideally only …