You want to create a custom pipe that converts a comma-separated string into an array of trimmed strings. Which implementation correctly achieves this?

hard📝 component behavior Q8 of 15

NestJS - Pipes

Atransform(value: string) { return value.split(','); }

Btransform(value: string) { return value.trim().split(','); }

Ctransform(value: string) { return value.split(',').map(s => s.trim()); }

Dtransform(value: string) { return value.toUpperCase().split(','); }

Step-by-Step Solution

Solution:

Step 1: Split string by commas
Use split(',') to divide the string into parts.
Step 2: Trim each part
Use map with trim() to remove spaces from each substring.
Final Answer:
transform(value: string) { return value.split(',').map(s => s.trim()); } -> Option C
Quick Check:
Split then trim each element for clean array [OK]

Quick Trick: Split first, then trim each element for clean array [OK]

Common Mistakes:

Trimming before splitting
Not trimming elements
Changing case unnecessarily

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More NestJS Quizzes

You want to create a custom pipe that converts a comma-separated string into an array of trimmed strings. Which implementation correctly achieves this?

Step 1: Split string by commas

Step 2: Trim each part

Final Answer:

Quick Check:

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