Fix MemoryError in Nuxt

Nuxt Memory Errors

Nuxt 3 applications can encounter memory errors both during development (large dev server memory) and in production (SSR payload accumulation). Here's how to fix both.

Dev Server Out of Memory

Nuxt's Vite-based dev server can exhaust memory with large projects:

{
  "scripts": {
    "dev": "node --max-old-space-size=4096 node_modules/.bin/nuxt dev"
  }
}

SSR Payload Size

Fetching too much data during SSR inflates the serialized payload:

// BAD — fetches entire dataset during SSR
const { data } = await useFetch('/api/products');
// Serialized in the HTML, sent to client, parsed again

// GOOD — paginate and fetch minimal fields
const { data } = await useFetch('/api/products', {
  params: { page: 1, limit: 20, fields: 'id,name,price' }
});

Reduce SSR Payload

// nuxt.config.ts
export default defineNuxtConfig({
  experimental: {
    payloadExtraction: true, // Extract payload to separate file
  },
});

Nitro Worker Memory

In production, configure Nitro's worker memory:

// nuxt.config.ts
export default defineNuxtConfig({
  nitro: {
    preset: 'node-server',
  },
});

Run with memory limits:

node --max-old-space-size=512 .output/server/index.mjs

Component-Level Caching

Cache expensive SSR components:

<template>
  <NuxtIsland name="ExpensiveWidget" />
</template>

Bugsly monitors Nuxt server memory and captures errors that occur during SSR, including the route being rendered and the payload size.