import { StyleSheet } from '@emotion/sheet'
/* import { type EmotionCache, type SerializedStyles } from '@emotion/utils' */
import {
serialize,
compile,
middleware,
rulesheet,
stringify,
COMMENT
} from 'stylis'
import weakMemoize from '@emotion/weak-memoize'
import memoize from '@emotion/memoize'
import isDevelopment from '#is-development'
import isBrowser from '#is-browser'
import {
compat,
removeLabel,
createUnsafeSelectorsAlarm,
incorrectImportAlarm
} from './stylis-plugins'
import { prefixer } from './prefixer'
/* import type { StylisPlugin } from './types' */
/*
export type Options = {
nonce?: string,
stylisPlugins?: StylisPlugin[],
key: string,
container?: HTMLElement,
speedy?: boolean,
prepend?: boolean,
insertionPoint?: HTMLElement
}
*/
let getServerStylisCache = isBrowser
? undefined
: weakMemoize(() =>
memoize(() => {
let cache = {}
return name => cache[name]
})
)
const defaultStylisPlugins = [prefixer]
let getSourceMap
if (isDevelopment) {
let sourceMapPattern =
/\/\*#\ssourceMappingURL=data:application\/json;\S+\s+\*\//g
getSourceMap = (styles /*: string */) => {
let matches = styles.match(sourceMapPattern)
if (!matches) return
return matches[matches.length - 1]
}
}
let createCache = (options /*: Options */) /*: EmotionCache */ => {
let key = options.key
if (isDevelopment && !key) {
throw new Error(
"You have to configure `key` for your cache. Please make sure it's unique (and not equal to 'css') as it's used for linking styles to your cache.\n" +
`If multiple caches share the same key they might "fight" for each other's style elements.`
)
}
if (isBrowser && key === 'css') {
const ssrStyles = document.querySelectorAll(
`style[data-emotion]:not([data-s])`
)
// get SSRed styles out of the way of React's hydration
// document.head is a safe place to move them to(though note document.head is not necessarily the last place they will be)
// note this very very intentionally targets all style elements regardless of the key to ensure
// that creating a cache works inside of render of a React component
Array.prototype.forEach.call(ssrStyles, (node /*: HTMLStyleElement */) => {
// we want to only move elements which have a space in the data-emotion attribute value
// because that indicates that it is an Emotion 11 server-side rendered style elements
// while we will already ignore Emotion 11 client-side inserted styles because of the :not([data-s]) part in the selector
// Emotion 10 client-side inserted styles did not have data-s (but importantly did not have a space in their data-emotion attributes)
// so checking for the space ensures that loading Emotion 11 after Emotion 10 has inserted some styles
// will not result in the Emotion 10 styles being destroyed
const dataEmotionAttribute = node.getAttribute('data-emotion')
if (dataEmotionAttribute.indexOf(' ') === -1) {
return
}
document.head.appendChild(node)
node.setAttribute('data-s', '')
})
}
const stylisPlugins = options.stylisPlugins || defaultStylisPlugins
if (isDevelopment) {
if (/[^a-z-]/.test(key)) {
throw new Error(
`Emotion key must only contain lower case alphabetical characters and - but "${key}" was passed`
)
}
}
let inserted = {}
let container /* : Node */
const nodesToHydrate = []
if (isBrowser) {
container = options.container || document.head
Array.prototype.forEach.call(
// this means we will ignore elements which don't have a space in them which
// means that the style elements we're looking at are only Emotion 11 server-rendered style elements
document.querySelectorAll(`style[data-emotion^="${key} "]`),
(node /*: HTMLStyleElement */) => {
const attrib = node.getAttribute(`data-emotion`).split(' ')
for (let i = 1; i < attrib.length; i++) {
inserted[attrib[i]] = true
}
nodesToHydrate.push(node)
}
)
}
let insert /*: (
selector: string,
serialized: SerializedStyles,
sheet: StyleSheet,
shouldCache: boolean
) => string | void */
const omnipresentPlugins = [compat, removeLabel]
if (isDevelopment) {
omnipresentPlugins.push(
createUnsafeSelectorsAlarm({
get compat() {
return cache.compat
}
}),
incorrectImportAlarm
)
}
if (isBrowser) {
let currentSheet
const finalizingPlugins = [
stringify,
isDevelopment
? element => {
if (!element.root) {
if (element.return) {
currentSheet.insert(element.return)
} else if (element.value && element.type !== COMMENT) {
// insert empty rule in non-production environments
// so @emotion/jest can grab `key` from the (JS)DOM for caches without any rules inserted yet
currentSheet.insert(`${element.value}{}`)
}
}
}
: rulesheet(rule => {
currentSheet.insert(rule)
})
]
const serializer = middleware(
omnipresentPlugins.concat(stylisPlugins, finalizingPlugins)
)
const stylis = styles => serialize(compile(styles), serializer)
insert = (
selector /*: string */,
serialized /*: SerializedStyles */,
sheet /*: StyleSheet */,
shouldCache /*: boolean */
) /*: void */ => {
currentSheet = sheet
if (isDevelopment) {
let sourceMap = getSourceMap(serialized.styles)
if (sourceMap) {
currentSheet = {
insert: (rule /*: string */) => {
sheet.insert(rule + sourceMap)
}
}
}
}
stylis(selector ? `${selector}{${serialized.styles}}` : serialized.styles)
if (shouldCache) {
cache.inserted[serialized.name] = true
}
}
} else {
const finalizingPlugins = [stringify]
const serializer = middleware(
omnipresentPlugins.concat(stylisPlugins, finalizingPlugins)
)
const stylis = styles => serialize(compile(styles), serializer)
let serverStylisCache = getServerStylisCache(stylisPlugins)(key)
let getRules = (
selector /*: string */,
serialized /*: SerializedStyles */
) /*: string */ => {
let name = serialized.name
if (serverStylisCache[name] === undefined) {
serverStylisCache[name] = stylis(
selector ? `${selector}{${serialized.styles}}` : serialized.styles
)
}
return serverStylisCache[name]
}
insert = (
selector /*: string */,
serialized /*: SerializedStyles */,
sheet /*: StyleSheet */,
shouldCache /*: boolean */
) /*: string | void */ => {
let name = serialized.name
let rules = getRules(selector, serialized)
if (cache.compat === undefined) {
// in regular mode, we don't set the styles on the inserted cache
// since we don't need to and that would be wasting memory
// we return them so that they are rendered in a style tag
if (shouldCache) {
cache.inserted[name] = true
}
if (isDevelopment) {
let sourceMap = getSourceMap(serialized.styles)
if (sourceMap) {
return rules + sourceMap
}
}
return rules
} else {
// in compat mode, we put the styles on the inserted cache so
// that emotion-server can pull out the styles
// except when we don't want to cache it which was in Global but now
// is nowhere but we don't want to do a major right now
// and just in case we're going to leave the case here
// it's also not affecting client side bundle size
// so it's really not a big deal
if (shouldCache) {
cache.inserted[name] = rules
} else {
return rules
}
}
}
}
const cache /*: EmotionCache */ = {
key,
sheet: new StyleSheet({
key,
container,
nonce: options.nonce,
speedy: options.speedy,
prepend: options.prepend,
insertionPoint: options.insertionPoint
}),
nonce: options.nonce,
inserted,
registered: {},
insert
}
cache.sheet.hydrate(nodesToHydrate)
return cache
}
export default createCache