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59 lines
2.0 KiB
Markdown
59 lines
2.0 KiB
Markdown
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# @emotion/cache
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### createCache
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`createCache` allows for low level customization of how styles get inserted by emotion. It's intended to be used with the [`<CacheProvider/>`](https://emotion.sh/docs/cache-provider) component to override the default cache, which is created with sensible defaults for most applications.
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```javascript
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import createCache from '@emotion/cache'
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export const myCache = createCache({
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key: 'my-prefix-key',
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stylisPlugins: [
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/* your plugins here */
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]
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})
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```
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### Primary use cases
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- Using emotion in embedded contexts such as an `<iframe/>`
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- Setting a [nonce](#nonce-string) on any `<style/>` tag emotion creates for security purposes
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- Using emotion with a developer defined `<style/>` tag
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- Using emotion with custom Stylis plugins
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## Options
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### `nonce`
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`string`
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A nonce that will be set on each style tag that emotion inserts for [Content Security Policies](https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP).
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### `stylisPlugins`
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`Function` | `Array<Function>`
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A Stylis plugin or plugins that will be run by Stylis during preprocessing. [Read the Stylis docs to find out more](https://github.com/thysultan/stylis.js#plugins). This can be used for many purposes such as RTL.
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### `prefix`
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`boolean` | `Function`, defaults to `true`
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Allows changing Stylis's vendor prefixing settings. It can be a boolean or a function to dynamically set which properties are prefixed. [More information can be found in the Stylis docs](https://github.com/thysultan/stylis.js#vendor-prefixing).
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### `key`
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`string`, defaults to `"css"`
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The prefix before class names. It will also be set as the value of the `data-emotion` attribute on the style tags that emotion inserts and it's used in the attribute name that marks style elements in `renderStylesToString` and `renderStylesToNodeStream`. This is **required if using multiple emotion caches in the same app**.
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### `container`
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`HTMLElement`
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A DOM node that emotion will insert all of its style tags into. This is useful for inserting styles into iframes.
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