Félix Malfait
9c984b137f
## Summary - **`isValidCountryCode`** was using `Array.includes()` on ~250 country codes (O(n) per call). Replaced with a `Set.has()` lookup (O(1)). - **`getCountryCodesForCallingCode`** was iterating all ~250 countries and calling `getCountryCallingCode()` on each one **every invocation**. Replaced with a precomputed `Map<callingCode, CountryCode[]>` built once at module load (O(1) per call). Both functions are called from `transformPhonesValue` on every phone field mutation, causing cumulative overhead visible in profiling (p95 self-time ~20-35ms). ## Test plan - [ ] Verify phone field creation/update still works correctly (country code validation, calling code resolution) - [ ] Verify spreadsheet import with phone fields still validates properly - [ ] Confirm no regression in `isValidCountryCode` or `getCountryCodesForCallingCode` behavior Made with [Cursor](https://cursor.com) Co-authored-by: Cursor <cursoragent@cursor.com>
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Does the world need another CRM?
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
Please feel free to flag any specific needs you have by creating an issue.
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
Stack
- TypeScript
- Nx
- NestJS, with BullMQ, PostgreSQL, Redis
- React, with Recoil, Emotion and Lingui
Thanks
Thanks to these amazing services that we use and recommend for UI testing (Chromatic), code review (Greptile), catching bugs (Sentry) and translating (Crowdin).
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