[Solved] Consider this Angular code migrating from observable to signal:const userSignal = signal({name: 'Alice'}); userSignal.update(user => ({..... console.log(userSignal().name);What is the console output? | Angular

Angular - Signals

Consider this Angular code migrating from observable to signal:

const userSignal = signal({name: 'Alice'});
userSignal.update(user => ({...user, name: 'Bob'}));
console.log(userSignal().name);

What is the console output?

ABob

BAlice

Cundefined

DAn error because update does not exist

Step-by-Step Solution

Solution:

Step 1: Understand signal update method
update() takes a function to modify the current value immutably.
Step 2: Apply update to change name
The update changes name from 'Alice' to 'Bob'.
Step 3: Read updated value
Calling userSignal() returns the updated object with name: 'Bob'.
Final Answer:
Bob -> Option A
Quick Check:
Signal update changes value correctly = A [OK]

Quick Trick: Use update() to immutably change signal object values [OK]

Common Mistakes:

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