feat: Convert InternalHighlight to forwardRef

packages/prism-react-renderer/src/components/highlight.ts

@@ -1,28 +1,28 @@
+import { forwardRef } from "react"
 import { InternalHighlightProps } from "../types"
 import { useGetLineProps } from "./useGetLineProps"
 import { useGetTokenProps } from "./useGetTokenProps"
 import { useTokenize } from "./useTokenize"
 import themeToDict from "../utils/themeToDict"
 
-export const Highlight = ({
-  children,
-  language: _language,
-  code,
-  theme,
-  prism,
-}: InternalHighlightProps) => {
-  const language = _language.toLowerCase()
-  const themeDictionary = themeToDict(theme, language)
-  const getLineProps = useGetLineProps(themeDictionary)
-  const getTokenProps = useGetTokenProps(themeDictionary)
-  const grammar = prism.languages[language]
-  const tokens = useTokenize({ prism, language, code, grammar })
+export const Highlight = forwardRef<HTMLDivElement, InternalHighlightProps>(
+  ({ children, language: _language, code, theme, prism }, ref) => {
+    const language = _language.toLowerCase()
+    const themeDictionary = themeToDict(theme, language)
+    const getLineProps = useGetLineProps(themeDictionary)
+    const getTokenProps = useGetTokenProps(themeDictionary)
+    const grammar = prism.languages[language]
+    const tokens = useTokenize({ prism, language, code, grammar })
 
-  return children({
-    tokens,
-    className: `prism-code language-${language}`,
-    style: themeDictionary != null ? themeDictionary.root : {},
-    getLineProps,
-    getTokenProps,
-  })
-}
+    return children({
+      tokens,
+      className: `prism-code language-${language}`,
+      style: themeDictionary != null ? themeDictionary.root : {},
+      getLineProps,
+      getTokenProps,
+      ref,
+    })
+  }
+)
+
+Highlight.displayName = "Highlight"

packages/prism-react-renderer/src/types.ts

@@ -64,6 +64,7 @@ export type RenderProps = {
   style: CSSProperties
   getLineProps: (input: LineInputProps) => LineOutputProps
   getTokenProps: (input: TokenInputProps) => TokenOutputProps
+  ref: React.Ref<HTMLDivElement>
 }
 export type PrismThemeEntry = {
   color?: string