Rom Grk

Need to document the `multiple` option and ensure all parts work when being passed an array of files.

[material-ui] Performance: lazy Ripple

6

Helps https://github.com/mui/material-ui/issues/35716 ## Context I've been working on the grid's performance, and I've noticed that the MaterialUI components we use are causing performance issues during scrolling. The cause of them...

Idea: inline JSX calls

2

On top of all the nice optimizations done here, I think inlining JSX calls would fit nicely as a feature of this project. I've created a proof-of-concept here: https://github.com/romgrk/babel-plugin-fast-jsx, feel...

I see that the tagline is "CSS-in-JS library designed for high performance style composition". As far as I know, emotion is the least performant of all the styling options I've...

Intent to fork - maintainers attention required

18

I work at [MUI](https://mui.com/) and we're using exceljs in our [data grid](https://github.com/mui/mui-x). We have an issue with an [outdated exceljs dependency](https://github.com/mui/mui-x/issues/13187) causing blocking security warnings for our users, as well...

[system] Pre-serialize & cache styles to improve performance

10

This PR uses emotion's serializer to pre-serialize stable styles and re-use them on every render, rather than have emotion pass them through `createStringFromObject` every time. [TestCase](https://gist.github.com/romgrk/534bd1b0cf195ff74f3e8e4bddca2f48) Results: ``` Before: 101.6ms...

[colorManipulator][perf] Fast color manipulation

26

I have noticed that some of our components use color manipulation functions in their style definition, e.g. `alpha(theme.palette.something, 0.5)`. Those functions run everytime the component mounts (and renders I think),...