Quick Answer

Handle memory exhaustion in JS.

Understanding the Issue

This error occurs when the JavaScript heap is exhausted, often from memory leaks or large data processing.

The Problem

This code demonstrates the issue:

Javascript Error 
const arr = [];
while(true) {
    arr.push(new Array(1000000));
}

The Solution

Here's the corrected code:

Javascript Fixed 
// Solution 1: Process data in chunks
function processLargeData() {
    const chunkSize = 1000;
    for (let i = 0; i < hugeArray.length; i += chunkSize) {
        const chunk = hugeArray.slice(i, i + chunkSize);
        processChunk(chunk);
    }
}

// Solution 2: Free memory
let largeData = getData();
process(largeData);
largeData = null; // Free reference

// Solution 3: Web Workers
// Offload heavy processing to separate thread

// Solution 4: Node.js memory increase
// node --max-old-space-size=4096 app.js

Key Takeaways

Optimize memory usage and process large data in chunks.