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> Simple styling in React.
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/* import { type EmotionCache } from '@emotion/utils' */
import * as React from 'react'
import { useContext, forwardRef } from 'react'
import createCache from '@emotion/cache'
import isDevelopment from '#is-development'
import isBrowser from '#is-browser'
let EmotionCacheContext /*: React.Context */ =
/* #__PURE__ */ React.createContext(
// we're doing this to avoid preconstruct's dead code elimination in this one case
// because this module is primarily intended for the browser and node
// but it's also required in react native and similar environments sometimes
// and we could have a special build just for that
// but this is much easier and the native packages
// might use a different theme context in the future anyway
typeof HTMLElement !== 'undefined'
? /* #__PURE__ */ createCache({ key: 'css' })
: null
)
if (isDevelopment) {
EmotionCacheContext.displayName = 'EmotionCacheContext'
}
export let CacheProvider = EmotionCacheContext.Provider
export let __unsafe_useEmotionCache =
function useEmotionCache() /*: EmotionCache | null*/ {
return useContext(EmotionCacheContext)
}
let withEmotionCache =
function withEmotionCache /* > */(
func /*: (props: Props, cache: EmotionCache, ref: Ref) => React.Node */
) /*: React.AbstractComponent */ {
return forwardRef((props /*: Props */, ref /*: Ref */) => {
// the cache will never be null in the browser
let cache = useContext(EmotionCacheContext)
return func(props, cache, ref)
})
}
if (!isBrowser) {
withEmotionCache = function withEmotionCache /* */(
func /*: (props: Props, cache: EmotionCache) => React.Node */
) /*: React.StatelessFunctionalComponent */ {
return (props /*: Props */) => {
let cache = useContext(EmotionCacheContext)
if (cache === null) {
// yes, we're potentially creating this on every render
// it doesn't actually matter though since it's only on the server
// so there will only every be a single render
// that could change in the future because of suspense and etc. but for now,
// this works and i don't want to optimise for a future thing that we aren't sure about
cache = createCache({ key: 'css' })
return (
{func(props, cache)}
)
} else {
return func(props, cache)
}
}
}
}
export { withEmotionCache }