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Question 1

I am using optional chaining quite often, but so far never encounter that issue, until today: if both items can be undefined, rather don't use optional chaining. Only last test (below) can help in ...

Question 2

When designing TypeScript props for React components, I'm sometimes unsure whether I should type props like: prop?: Type or prop: Type | undefined My understanding so far: prop?: Type The prop ...

Question 3

I have this problem - I cannot use Tailwind in my project or optional chaining operator (?.) because VSCode adds an extra whitespace after a colon or after a dot. In case of taiwind, it adds a ...

Question 4

I am using TypeScript 5.7.3. Installed @types/[email protected]. TypeScript config: { "compilerOptions": { "target": "ES2020", "moduleResolution": &...

Question 5

We have an application that needs to be supported in old Chrome (v79). Angular Version 13.2.7 Typescript Version 4.5.5 Node Version 16.14.0 We are getting an error: ERROR: Big integer literals are not ...

Question 6

I'm using an Optional.of chain in Java to get a value, Integer yearOfBirth = Optional.ofNullable(employee) .map(Employee::getDateOfBirth) ....

Question 7

The use case is a user/client sends a request to a server running PHP. I am trying to write the PHP code on the server e.g. an API endpoint to process the request. I have existing production PHP code ...

Question 8

In Javascript, if I have a potentially null object obj, which, if not null, will have a field x - I can write obj?.x. This is called "optional chaining" or "safe navigation": If ...

Question 9

I have scenario in my project that a common shared service having a common variable (object) to store nested objects. I have to access and update its value in html using NgModel. Optional-chaining ...

Question 10

I came across the below code: public void method(MyObject obj) { String value = Optional.ofNullable(obj) .map(x -> obj.doSomething()) ....

Question 11

I've encountered an unexpected behavior while using the Optional API in Java. Session session = sessionService .getSessionById(id) .orElse( ...

Question 12

In VSCode, IntelliSense is saying a property does not exist on an object in a TypeScript file even when I specify the optional chaining syntax to short-circuit the error. The code compiles correctly ...

Question 13

I struggle with finding an elegant way to convert a variable of type Optional<String[]> to Optional<String> and joining all elements of the given array. Is there an elegant solution for ...

Question 14

I am working on Python code where the domain logic makes it natural to have a class with an optional field of a second class, which itself has an optional field of a third class. Boiling it down to a ...

Question 15

in a node repl or browser console: > ({})?.a undefined > (null)?.a undefined > (null)?.a.b undefined > ({})?.a.b Uncaught TypeError: Cannot read properties of undefined (reading 'b') if (...

Collectives™ on Stack Overflow

using optional chaining with === in case of both 'undefined'

In React + TypeScript, when should a prop be prop?: Type vs prop: Type | undefined? [duplicate]

non-removable extra whitespace formatting after a colon, which creates an error in VSCode [closed]

TypeScript complains about optional chaining

Angular typescript error with BigInt and Optional Chaining, nullish coalescing

How can I log a value in a Java Optional.of chain? [duplicate]

$_POST variable from request contains optional instead of string in PHP [closed]

C++ equivalent of Javascript's '?.' operator for optional-chaining?

How to implement Optional chaining in ngModel using angular 18

Using nullable objects in Optional methods after covering it with ofNullable

Optional's orElse() executed even when object is present [duplicate]

VSCode IntelliSense displaying an error on Optional Chaining in TypeScript

How to turn a optional of an string array into a optional of a string?

Is there a shorter way to tell Mypy that a given optional chaining is fine?

Why does optional-chaining multiple property accesses throw for an empty object, but not for null?

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