Flatten Array Depth Recursion

MEDIUM

+250 XP REWARD ⏱ Limit: 10m

// MISSION BRIEFING //

ANOMALY DESCRIPTION

A packet flattener only flattens 1 level deep using [].concat(...arr). Nested packets deeper than 1 level remain unflattened. Implement recursive flattening or use flat(Infinity).

SPECIFICATION SUITE

Nested 2 levels

Input: [1, [2, [3, 4]]]

Expected: [1, 2, 3, 4]

Flat array untouched

Input: [1, 2, 3]

Expected: [1, 2, 3]

Deeply nested [PROTECTED TEST]

Evaluation logic hidden to prevent hardcoding.

RADAR HINTS

Hint #1 (Click to decrypt)

Use the modern arr.flat(Infinity) method.

solution.js UTF-8 • JAVASCRIPT

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