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- 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)
- Why use triple-equal (===) in TypeScript? - Stack Overflow
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 one which is preferable
- Does Typescript support the ?. operator? (And, whats it called?)
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 where TypeScript can immediately stop running some expressions if we run into a null or undefined The star of the show in optional chaining is the new ? operator for optional property accesses Refer to the TypeScript 3 7
- In TypeScript, what is the ! (exclamation mark bang) operator when . . .
In TypeScript, what is the ! (exclamation mark bang) operator when dereferencing a member? Asked 8 years, 5 months ago Modified 2 months ago Viewed 640k times
- How can I generate a tsconfig. json file? - Stack Overflow
How can I generate a tsconfig json via the command line? I tried command tsc init, but this doesn't work
- What does ?: mean in TypeScript? - Stack Overflow
I found the following in a TypeScript declaration file for Angular: interface IDirective{ compile?: (templateElement: IAugmentedJQuery, What does the ?: after compile do?
- TypeScript: Type string | undefined is not assignable to type string . . .
Alternatively, you can type name1 as string | undefined, and handle cases of undefined further down However, it's typically better to handle unexpected errors earlier on You can also let TypeScript infer the type by omitting the explicit type: let name1 = person name This will still prevent name1 from being reassigned as a number, for example
- typescript - What does the as keyword do? - Stack Overflow
The as keyword is a Type Assertion in TypeScript which tells the compiler to consider the object as another type than the type the compiler infers the object to be
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