UXP Polyfills

This package contains polyfills that are convenient and sometimes needed for building UXP extensions.

• 'matchmedia-polyfill' is a polyfill for the matchMedia API, which is not available in the UXP API but needed for React.
• 'mutationobserver-shim' is a polyfill for the MutationObserver API, which is not available in the UXP API but needed for React.
• 'performance-measure' is a polyfill for the performance.measure API, which is not available in the UXP API but needed for React dev mode.
• 'core-js/actual/error' is a polyfill for the Error.cause property, which is very useful for error handling.

Implementation details

They are all bundled into a single file, because some of these (e.g. matchmedia-polyfill) has been patched with pnpm.