[Solved] Given this providers array:providers: [ { provide: 'TOKEN', useValue: 'X', multi: true }, { provide: 'TOKEN', useValue: 'Y', multi: false } ]What issue will Angular report? | Angular

Angular - Advanced Patterns

Given this providers array:

providers: [
  { provide: 'TOKEN', useValue: 'X', multi: true },
  { provide: 'TOKEN', useValue: 'Y', multi: false }
]

What issue will Angular report?

AError: Mixing multi: true and multi: false for the same token

BNo error; Angular injects ['X', 'Y']

COnly 'X' is injected, 'Y' is ignored

DOnly 'Y' is injected, 'X' is ignored

Step-by-Step Solution

Solution:

Step 1: Understand multi flag consistency
Angular requires all providers for a token to have the same multi flag value.
Step 2: Analyze given providers
One provider has multi: true, the other multi: false, causing Angular to throw an error.
Final Answer:
Error: Mixing multi: true and multi: false for the same token -> Option A
Quick Check:
Multi flag must be consistent for all providers [OK]

Quick Trick: Keep multi flag consistent for all providers [OK]

Common Mistakes:

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