Félix Malfait
96c5728ed0
## Summary - On unauthenticated pages (login), mocked object metadata was being hydrated into the store with `readableFields` and `updatableFields` attached. These derived arrays duplicate every field per object, inflating `objectMetadataItems` in localStorage from ~70 KB to ~2 MB. Combined with other metadata keys, this exceeded Safari's 5 MB quota and caused `QuotaExceededError`, preventing real data from replacing mock data on login. - Extracted flat mock data into a dedicated file (`generatedMockObjectMetadataItemsWithRelated.ts`) and use it for store hydration, keeping the enriched version (`generatedMockObjectMetadataItems`) only for tests. - Completed `splitObjectMetadataItemWithRelated`'s contract by stripping `readableFields` and `updatableFields` at runtime (not just via TypeScript's `Omit`), matching the `FlatObjectMetadataItem` return type that omits all four relational properties. ## Root cause 1. `MinimalMetadataLoadEffect` loads mocked metadata on unauthenticated pages. 2. `generatedMockObjectMetadataItems` was produced by `enrichObjectMetadataItemsWithPermissions`, which attaches `readableFields` and `updatableFields` (full copies of the `fields` array). 3. `splitObjectMetadataItemWithRelated` only destructured `fields` and `indexMetadatas` — `readableFields`/`updatableFields` leaked into `...objectProperties` at runtime because `Omit` is a compile-time-only guard. 4. These bloated objects were written to localStorage, consuming ~2 MB instead of ~70 KB. 5. On login, the intermediate state (old composite mock `current` + new flat real `draft`) exceeded the 5 MB quota, causing a `QuotaExceededError` deadlock. ## Test plan - [ ] Open the app in a fresh Safari private window (empty localStorage) - [ ] Verify the login page loads without errors - [ ] Log in and verify metadata loads correctly - [ ] Check `localStorage` size — `metadataStoreState__objectMetadataItems` should be ~70 KB, not ~2 MB - [ ] Run existing tests: `npx nx test twenty-front` — no regressions from the mock data split Made with [Cursor](https://cursor.com) --------- Co-authored-by: Charles Bochet <charles@twenty.com>
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Why Twenty
We built Twenty for three reasons:
CRMs are too expensive, and users are trapped. Companies use locked-in customer data to hike prices. It shouldn't be that way.
A fresh start is required to build a better experience. We can learn from past mistakes and craft a cohesive experience inspired by new UX patterns from tools like Notion, Airtable or Linear.
We believe in open-source and community. Hundreds of developers are already building Twenty together. Once we have plugin capabilities, a whole ecosystem will grow around it.
What You Can Do With Twenty
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Below are a few features we have implemented to date:
- Personalize layouts with filters, sort, group by, kanban and table views
- Customize your objects and fields
- Create and manage permissions with custom roles
- Automate workflow with triggers and actions
- Emails, calendar events, files, and more
Personalize layouts with filters, sort, group by, kanban and table views
Customize your objects and fields
Create and manage permissions with custom roles
Automate workflow with triggers and actions
Emails, calendar events, files, and more
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- TypeScript
- Nx
- NestJS, with BullMQ, PostgreSQL, Redis
- React, with Jotai, Linaria and Lingui
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