Mutable Default Argument

EASY

+100 XP REWARD ⏱ Limit: 5m

// MISSION BRIEFING //

ANOMALY DESCRIPTION

A tag registration function allows caller overrides, but when items array is omitted, it fails to initialize a fresh array if null is supplied. Fix the function so items defaults to a clean array when not provided or null.

SPECIFICATION SUITE

Append to existing

Input: 'cyber', ['code']

Expected: ['code', 'cyber']

Append to default

Input: 'glitch', undefined

Expected: ['glitch']

Null argument safety [PROTECTED TEST]

Evaluation logic hidden to prevent hardcoding.

RADAR HINTS

Hint #1 (Click to decrypt)

Handle null in addition to undefined for the items parameter.

solution.js UTF-8 • JAVASCRIPT

STATIC ANALYSIS CONSOLE Ready for dispatch

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