2d2a7ea76f
React's strict mode runs effects twice on mount, but once it's done that
it'll go forward with the state from the first effect. For example, this
component:
```tsx
let nextId = 1
function Component() {
const [state, setState] = useState(null)
useEffect(() => {
const id = nextId++
console.log('set up', id)
setState(id)
return () => console.log('tear down', id)
}, [])
if (!state) return
console.log('render', state)
}
```
Would log something like this when mounting for the first time:
- `set up 1`
- `tear down 1`
- `set up 2`
- `render 1`
For us, this is a problem: editor 2 is the version that's still running,
but editor 1 is getting used for render. React talks a bit about this
issue here: https://github.com/reactwg/react-18/discussions/19
The fix seems to be to keep the editor in a `useRef` instead of a
`useState`. We need the state to trigger re-renders though, so we sync
the ref into the state although we don't actually use the state value.
### Change Type
- [x] `sdk` — Changes the tldraw SDK
- [x] `bugfix` — Bug fix
### Release Notes
- Fix a bug causing text shape measurement to work incorrectly when
using react strict mode
|
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|---|---|---|
| .github | ||
| .husky | ||
| .yarn/patches | ||
| apps | ||
| assets | ||
| config | ||
| packages | ||
| scripts | ||
| templates | ||
| .dockerignore | ||
| .eslintignore | ||
| .eslintplugin.js | ||
| .eslintrc.js | ||
| .gitignore | ||
| .ignore | ||
| .prettierignore | ||
| .prettierrc | ||
| .yarnrc.yml | ||
| CHANGELOG.md | ||
| CLA.md | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| lazy.config.ts | ||
| lerna.json | ||
| LICENSE.md | ||
| package.json | ||
| README.md | ||
| RELEASES.md | ||
| TRADEMARKS.md | ||
| tsdoc.json | ||
| yarn.config.cjs | ||
| yarn.lock | ||
tldraw
Welcome to the public monorepo for tldraw. tldraw is a library for creating infinite canvas experiences in React. It's the software behind the digital whiteboard tldraw.com.
- Read the docs and learn more at tldraw.dev.
- Learn about our license.
🤵 Interested in purchasing a commercial license for the tldraw SDK? Fill out this form.
Installation
npm i tldraw
Usage
import { Tldraw } from 'tldraw'
import 'tldraw/tldraw.css'
export default function App() {
return (
<div style={{ position: 'fixed', inset: 0 }}>
<Tldraw />
</div>
)
}
Learn more at tldraw.dev.
Local development
The local development server will run our examples app. The basic example will show any changes you've made to the codebase.
To run the local development server, first clone this repo.
Enable corepack to make sure you have the right version of yarn:
corepack enable
Install dependencies:
yarn
Start the local development server:
yarn dev
Open the example project at localhost:5420.
License
The tldraw source code and its distributions are provided under the tldraw license. This license does not permit commercial use. To purchase a commercial license or learn more, please fill out this form.
Trademarks
Copyright (c) 2023-present tldraw Inc. The tldraw name and logo are trademarks of tldraw. Please see our trademark guidelines for info on acceptable usage.
Contact
Find us on Twitter/X at @tldraw.
Community
Have questions, comments or feedback? Join our discord or start a discussion. For the latest news and release notes, check out our Substack.
Contribution
Please see our contributing guide. Found a bug? Please submit an issue.