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Array<React.ReactElement<any>>,\n fragmentChild: React.ReactChild\n ): Array<React.ReactElement<any>> => {\n if (\n typeof fragmentChild === 'string' ||\n typeof fragmentChild === 'number'\n ) {\n return fragmentList\n }\n return fragmentList.concat(fragmentChild)\n },\n []\n )\n )\n }\n return list.concat(child)\n}\n\nconst METATYPES = ['name', 'httpEquiv', 'charSet', 'itemProp']\n\n/*\n returns a function for filtering head child elements\n which shouldn't be duplicated, like <title/>\n Also adds support for deduplicated `key` properties\n*/\nfunction unique() {\n const keys = new Set()\n const tags = new Set()\n const metaTypes = new Set()\n const metaCategories: { [metatype: string]: Set<string> } = {}\n\n return (h: React.ReactElement<any>) => {\n let unique = true\n\n if (h.key && typeof h.key !== 'number' && h.key.indexOf('$') > 0) {\n const key = h.key.slice(h.key.indexOf('$') + 1)\n if (keys.has(key)) {\n unique = false\n } else {\n keys.add(key)\n }\n }\n\n // 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</HeadManagerContext.Consumer>\n )}\n </AmpStateContext.Consumer>\n )\n}\n\nHead.rewind = Effect.rewind\n\nexport default Head\n"]},"metadata":{},"sourceType":"script"}

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\"string\" or \"number\" in this case we ignore them for backwards compat\n if (typeof child === 'string' || typeof child === 'number') {\n return list;\n } // Adds support for React.Fragment\n\n\n if (child.type === _react[\"default\"].Fragment) {\n return list.concat(_react[\"default\"].Children.toArray(child.props.children).reduce(function (fragmentList, fragmentChild) {\n if (typeof fragmentChild === 'string' || typeof fragmentChild === 'number') {\n return fragmentList;\n }\n\n return fragmentList.concat(fragmentChild);\n }, []));\n }\n\n return list.concat(child);\n}\n\nvar METATYPES = ['name', 'httpEquiv', 'charSet', 'itemProp'];\n/*\nreturns a function for filtering head child elements\nwhich shouldn't be duplicated, like \nAlso adds support for deduplicated `key` properties\n*/\n\nfunction unique() {\n var keys = new Set();\n var tags = new Set();\n var metaTypes = new Set();\n var metaCategories = {};\n return function (h) {\n var unique = true;\n\n if (h.key && typeof h.key 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React from 'react'\nimport withSideEffect from './side-effect'\nimport { AmpStateContext } from './amp-context'\nimport { HeadManagerContext } from './head-manager-context'\nimport { isInAmpMode } from './amp'\n\ntype WithInAmpMode = {\n inAmpMode?: boolean\n}\n\nexport function defaultHead(inAmpMode = false): JSX.Element[] {\n const head = [<meta charSet=\"utf-8\" />]\n if (!inAmpMode) {\n head.push(<meta name=\"viewport\" content=\"width=device-width\" />)\n }\n return head\n}\n\nfunction onlyReactElement(\n list: Array<React.ReactElement<any>>,\n child: React.ReactChild\n): Array<React.ReactElement<any>> {\n // React children can be \"string\" or \"number\" in this case we ignore them for backwards compat\n if (typeof child === 'string' || typeof child === 'number') {\n return list\n }\n // Adds support for React.Fragment\n if (child.type === React.Fragment) {\n return list.concat(\n React.Children.toArray(child.props.children).reduce(\n (\n fragmentList: Array<React.ReactElement<any>>,\n fragmentChild: React.ReactChild\n ): Array<React.ReactElement<any>> => {\n if (\n typeof fragmentChild === 'string' ||\n typeof fragmentChild === 'number'\n ) {\n return fragmentList\n }\n return fragmentList.concat(fragmentChild)\n },\n []\n )\n )\n }\n return list.concat(child)\n}\n\nconst METATYPES = ['name', 'httpEquiv', 'charSet', 'itemProp']\n\n/*\n returns a function for filtering head child elements\n which shouldn't be duplicated, like <title/>\n Also adds support for deduplicated `key` properties\n*/\nfunction unique() {\n const keys = new Set()\n const tags = new Set()\n const metaTypes = new Set()\n const metaCategories: { [metatype: string]: Set<string> } = {}\n\n return (h: React.ReactElement<any>) => {\n let unique = true\n\n if (h.key && typeof h.key !== 'number' && h.key.indexOf('$') > 0) {\n const key = h.key.slice(h.key.indexOf('$') + 1)\n if (keys.has(key)) {\n unique = false\n } else {\n keys.add(key)\n }\n }\n\n // 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