martmull
6a36fc3ba8
## Problem
`yarn twenty dev` crashes after running for a while with:
```
FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory
```
The crash happens during the **Manifest Build** phase, after the process
has been up for a long time (~35 min in the reported case) — the
signature of a slow memory leak in the long-running watch process, not a
single oversized operation.
Fixes the issue described in `core-team-issues#2560`.
## Root cause
`manifest-extract-config-from-file.ts``loadModule()` compiles each
entity file with esbuild (`bundle: true`, so the whole dependency graph
is inlined), writes it to a unique `mkdtemp` directory, and loads it
with `appRequire(tempFile)`.
`createRequire` shares Node's global module cache (`Module._cache`), so
**every loaded temp module is retained in the require cache forever**.
Two things made this unbounded:
1. `mkdtemp` generates a fresh random directory each call, so cache keys
never collide — entries purely accumulate.
2. The `finally` block removed the temp dir **from disk** but never
evicted the `require.cache` entry, so the evaluated, fully-bundled
module object stayed pinned in the JS heap.
In dev mode the orchestrator re-runs `buildManifest` on **every** file
change and watcher rebuild (`scheduleSync()`), and each rebuild compiles
& `require()`s ~one module per entity file (53 in the reported case).
Over a session of editing, thousands of large bundled module objects
pile up in `require.cache` until V8's heap is exhausted → FATAL OOM.
## Fix
Delete the temp module from the require cache after loading it, so
memory stays bounded to a single rebuild. Because `bundle: true` inlines
the whole graph, the temp module is the only cache entry per load, so
deleting it lets the bundled object be GC'd.
```ts
} finally {
delete appRequire.cache[tempFile];
await remove(tempDir);
}
```
## Test
Adds a regression test (`manifest-extract-config-from-file.spec.ts`)
that runs `extractManifestFromFile` repeatedly and asserts no
`twenty-manifest` temp modules accumulate in the require cache.
https://claude.ai/code/session_0168hN9yEYvjZbqdz7PckKn8
---
_Generated by [Claude
Code](https://claude.ai/code/session_0168hN9yEYvjZbqdz7PckKn8)_
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The #1 Open-Source CRM
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Twenty gives technical teams the building blocks for a custom CRM that meets complex business needs and quickly adapts as the business evolves. Twenty is the CRM you build, ship, and version like the rest of your stack.
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Scaffold a new app with the Twenty CLI:
npx create-twenty-app my-app
Define objects, fields, and views as code:
import { defineObject, FieldType } from 'twenty-sdk/define';
export default defineObject({
nameSingular: 'deal',
namePlural: 'deals',
labelSingular: 'Deal',
labelPlural: 'Deals',
fields: [
{ name: 'name', label: 'Name', type: FieldType.TEXT },
{ name: 'amount', label: 'Amount', type: FieldType.CURRENCY },
{ name: 'closeDate', label: 'Close Date', type: FieldType.DATE_TIME },
],
});
Then ship it to your workspace:
npx twenty app:publish --private
See the app development guide for objects, views, agents, and logic functions.
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