[Solved] Why does this code throw an error?const sab = new SharedArrayBuffer(4); const int16 = new Int16Array(sab); int16[2] = 10; | Node.js

Node.js - Worker Threads

Why does this code throw an error?

const sab = new SharedArrayBuffer(4);
const int16 = new Int16Array(sab);
int16[2] = 10;

ASharedArrayBuffer cannot be used with Int16Array.

BInt16Array requires 8 bytes minimum.

CIndex 2 is out of bounds for Int16Array of 4 bytes.

Dint16 array must be created with new keyword.

Step-by-Step Solution

Solution:

Step 1: Calculate Int16Array length
SharedArrayBuffer is 4 bytes; Int16Array uses 2 bytes per element, so length is 2.
Step 2: Check index access
Index 2 is out of bounds (valid indices: 0 and 1), causing an error.
Final Answer:
Index 2 is out of bounds for Int16Array of 4 bytes. -> Option C
Quick Check:
Index bounds error = B [OK]

Quick Trick: Typed array length = buffer size / element byte size [OK]

Common Mistakes:

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