{
  "version": 3,
  "sources": ["../src/index.ts"],
  "sourcesContent": ["import type { EntryContext } from '@remix-run/server-runtime';\nimport type { ComponentType } from 'react';\nimport { createElement, useEffect, useState } from 'react';\nimport { createPortal } from 'react-dom';\nimport { RemixServer } from '@remix-run/react';\nimport { renderToString } from 'react-dom/server';\n\ntype HeadComponent = ComponentType<{\n  __remix_island_render_server?: boolean;\n}> & {\n  __remix_island_id?: string;\n};\n\nlet globalMounted = false;\nexport interface CreateHeadOpts {\n  id?: string;\n  cleanup?: boolean;\n}\nexport function createHead(\n  Comp: ComponentType,\n  { id = 'remix-island', cleanup = true }: CreateHeadOpts = {},\n): HeadComponent {\n  const Head: HeadComponent = (props) => {\n    const [mounted, setMounted] = useState(globalMounted);\n    useEffect(() => {\n      if (cleanup) {\n        removeOldHead(Head);\n      }\n      globalMounted = true;\n      setMounted(true);\n    }, []);\n\n    if (!mounted && props.__remix_island_render_server) {\n      return createElement(Comp);\n    }\n\n    if (mounted) {\n      return createPortal(createElement(Comp), document.head);\n    }\n\n    return null;\n  };\n\n  Head.displayName = 'RemixIslandHead';\n  Head.__remix_island_id = id;\n\n  return Head;\n}\n\nexport interface RenderHeadToStringOpts {\n  request: Request;\n  remixContext: EntryContext;\n  Head: HeadComponent;\n}\n\nexport function renderHeadToString({\n  request,\n  remixContext,\n  Head,\n}: RenderHeadToStringOpts) {\n  const head = renderToString(\n    createElement(RemixServer, {\n      context: switchRootComponent(remixContext, Head),\n      url: request.url,\n    }),\n  );\n  const id = Head.__remix_island_id;\n  return `<!--${id}-start-->${head}<!--${id}-end-->`;\n}\n\nexport function switchRootComponent(\n  remixContext: EntryContext,\n  Head: HeadComponent,\n): EntryContext {\n  let serverHandoffString = remixContext.serverHandoffString;\n  if (serverHandoffString) {\n    const serverHandoff = JSON.parse(serverHandoffString);\n    // remove errors from JSON string\n    delete serverHandoff?.state?.errors;\n    serverHandoffString = JSON.stringify(serverHandoff);\n  }\n\n  const { Layout, ...rootModuleWithoutLayout } =\n    remixContext.routeModules.root!;\n\n  return {\n    ...remixContext,\n    serverHandoffString,\n    staticHandlerContext: {\n      ...remixContext.staticHandlerContext,\n      errors: null, // remove errors from context\n    },\n    routeModules: {\n      ...remixContext.routeModules,\n      root: {\n        ...rootModuleWithoutLayout,\n        default: () =>\n          createElement(Head, { __remix_island_render_server: true }),\n      },\n    },\n  };\n}\n\nexport function removeOldHead(\n  Head: HeadComponent,\n  parent: HTMLElement = document.head,\n) {\n  let foundOldHeader = false;\n  const nodesToRemove: ChildNode[] = [];\n  const id = Head.__remix_island_id;\n  for (const node of parent.childNodes) {\n    if (!foundOldHeader && node.nodeName !== '#comment') {\n      continue;\n    }\n    if (\n      foundOldHeader &&\n      node.nodeName === '#comment' &&\n      node.nodeValue === `${id}-end`\n    ) {\n      nodesToRemove.push(node);\n      break;\n    }\n    if (\n      foundOldHeader ||\n      (node.nodeName === '#comment' && node.nodeValue === `${id}-start`)\n    ) {\n      foundOldHeader = true;\n      nodesToRemove.push(node);\n    }\n  }\n  for (const node of nodesToRemove) {\n    node.remove();\n  }\n}\n"],
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