## What Migrates the frontend stack from **React 18.3 → 19.2**. The website, sdk, companion and emails packages were already on React 19; this brings the remaining holdouts (`twenty-front`, `twenty-ui`, `twenty-ui-deprecated`, `twenty-front-component-renderer`) and `twenty-server`'s email rendering onto 19, and pins a single React version repo-wide. ## Why React 18.x is now the legacy line. Staying current keeps us on the patched/maintained branch and unblocks downstream library majors (react-router 7, mantine 9, etc.) that require React 19 peers. ## Dependency bumps (required by React 19 peers / removed APIs) | Package | From | To | Reason | |---|---|---|---| | react / react-dom | 18.3.1 | 19.2.3 | core | | @hello-pangea/dnd | 16 | 18 | peer `^18 \|\| ^19` | | react-datepicker | 6 | 9 | v<7 used removed `findDOMNode`; drops `@types/react-datepicker` | | react-data-grid | beta.13 | beta.59 | peer `^19.2`; new render API | | graphiql (+ @graphiql/react, plugin-explorer) | 3 / 0.23 / 1 | 5 / 0.37 / 5.1 | peer `^18 \|\| ^19` | | react-helmet-async | 1.3 | **@dr.pogodin/react-helmet** 3.2 | upstream caps peer at `^18`; drop-in React 19 fork | A `resolutions` pin enforces a single React (19.2.3) + `@types/react` (19.2.14) across the monorepo to avoid duplicate copies / type-identity splits. Versions are the aged lockfile patches (clears the `npmMinimalAgeGate`). ## Code changes - **Global `JSX` shim** (`react-jsx-global.d.ts` per package): React 19 moved the `JSX` namespace under `React.JSX`; several deps' published types (notably `@linaria/react`'s `styled.d.ts`, which types every `styled.x` via `keyof JSX.IntrinsicElements`) still reference the global namespace. Without the shim, every styled component degrades to `any` props. - **Ref nullability**: `useRef<T>(null)` now returns `RefObject<T | null>`; widened consumer prop/hook ref types accordingly (incl. the shared `useListenClickOutside`). - **react-datepicker v9**: `onChange`/`onSelect` accept `Date | null`, `calendarStartDay` typing, `ReactDatePickerProps`→`DatePickerProps`, relaxed the dynamic `selectsMultiple` discriminated union. - **react-data-grid beta.59**: `formatter`→`renderCell`, `editor`→`renderEditCell`, `headerRenderer`→`renderHeaderCell`, `components`→`renderers`, `onRowClick`→`onCellClick`, object-shaped `useRowSelection`, Set-based selection. - **dnd style cast**: `@radix-ui/react-popper` augments `CSSProperties` with a `--radix-*` index signature that dnd's closed `DraggingStyle` doesn't satisfy → cast at the spread. ## Status / testing - ✅ `typecheck` green: twenty-front, twenty-ui, twenty-ui-deprecated, twenty-front-component-renderer, twenty-server - ⏳ build / lint / unit tests / storybook+argos / runtime smoke-test in progress Draft until local + CI verification completes. Notable behavior to QA manually: spreadsheet import (data-grid), date pickers, drag-and-drop boards/lists, GraphQL playground, page titles/favicon. <!-- This is an auto-generated description by cubic. --> <a href="https://cubic.dev/pr/twentyhq/twenty/pull/21531?utm_source=github" target="_blank" rel="noopener noreferrer" data-no-image-dialog="true"><picture><source media="(prefers-color-scheme: dark)" srcset="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"><source media="(prefers-color-scheme: light)" srcset="https://www.cubic.dev/buttons/review-in-cubic-light.svg"><img alt="Review in cubic" src="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"></picture></a> <!-- End of auto-generated description by cubic. -->
The #1 Open-Source CRM
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Why Twenty
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.
Learn more about why we built Twenty
Installation
Cloud
The fastest way to get started. Sign up at twenty.com and spin up a workspace in under a minute, with no infrastructure to manage and always up to date.
Build an app
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.
Self-hosting
Run Twenty on your own infrastructure with Docker Compose, or contribute locally via the local setup guide.
Everything you need
Twenty gives you the building blocks of a modern CRM (objects, views, workflows, and agents) and lets you extend them as code. Here's a tour of what's in the box.
Want to go deeper? Read the User Guide for product walkthroughs, or the
Documentation for developer reference.
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Stack
TypeScript
Nx
NestJS, with BullMQ,
PostgreSQL,
Redis
React, with Jotai, Linaria and Lingui
Thanks
Thanks to these amazing services that we use and recommend for code review (Greptile), catching bugs (Sentry) and translating (Crowdin).
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