Answer
Custom Pipes transform UI data, but avoid heavy logic inside pipes because they can re-run frequently. Use memoization or pre-computed values when needed to avoid performance issues.
Quick Answer
Custom pipes transform display values: implement PipeTransform, define transform() method with @Pipe decorator. Example: a truncate pipe that shortens long text. When to avoid: heavy computation inside pipes (runs on every CD cycle unless pure), async operations in pipes (use async pipe instead), or logic that belongs in the component/service. Keep pipes simple and stateless.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ