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{"ast":null,"code":"\"use strict\";\n\nvar _classCallCheck = require(\"@babel/runtime/helpers/classCallCheck\");\n\nvar _createClass = require(\"@babel/runtime/helpers/createClass\");\n\nvar _inherits = require(\"@babel/runtime/helpers/inherits\");\n\nvar _possibleConstructorReturn = require(\"@babel/runtime/helpers/possibleConstructorReturn\");\n\nvar _getPrototypeOf = require(\"@babel/runtime/helpers/getPrototypeOf\");\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }\n\nvar _interopRequireDefault = require(\"@babel/runtime/helpers/interopRequireDefault\");\n\nvar _interopRequireWildcard = require(\"@babel/runtime/helpers/interopRequireWildcard\");\n\nexports.__esModule = true;\nexports[\"default\"] = void 0;\n\nvar _react = _interopRequireWildcard(require(\"react\"));\n\nvar _url = require(\"url\");\n\nvar _utils = require(\"../next-server/lib/utils\");\n\nvar _router = _interopRequireDefault(require(\"./router\"));\n\nvar _router2 = require(\"../next-server/lib/router/router\");\n\nfunction isLocal(href) {\n var url = (0, _url.parse)(href, false, true);\n var origin = (0, _url.parse)((0, _utils.getLocationOrigin)(), false, true);\n return !url.host || url.protocol === origin.protocol && url.host === origin.host;\n}\n\nfunction memoizedFormatUrl(formatFunc) {\n var lastHref = null;\n var lastAs = null;\n var lastResult = null;\n return function (href, as) {\n if (lastResult && href === lastHref && as === lastAs) {\n return lastResult;\n }\n\n var result = formatFunc(href, as);\n lastHref = href;\n lastAs = as;\n lastResult = result;\n return result;\n };\n}\n\nfunction formatUrl(url) {\n return url && typeof url === 'object' ? (0, _utils.formatWithValidation)(url) : url;\n}\n\nvar observer;\nvar listeners = new Map();\nvar IntersectionObserver = true ? window.IntersectionObserver : null;\nvar prefetched = {};\n\nfunction getObserver() {\n // Return shared instance of IntersectionObserver if already created\n if (observer) {\n return observer;\n } // Only create shared IntersectionObserver if supported in browser\n\n\n if (!IntersectionObserver) {\n return undefined;\n }\n\n return observer = new IntersectionObserver(function (entries) {\n entries.forEach(function (entry) {\n if (!listeners.has(entry.target)) {\n return;\n }\n\n var cb = listeners.get(entry.target);\n\n if (entry.isIntersecting || entry.intersectionRatio > 0) {\n observer.unobserve(entry.target);\n listeners[\"delete\"](entry.target);\n cb();\n }\n });\n }, {\n rootMargin: '200px'\n });\n}\n\nvar listenToIntersections = function listenToIntersections(el, cb) {\n var observer = getObserver();\n\n if (!observer) {\n return function () {};\n }\n\n observer.observe(el);\n listeners.set(el, cb);\n return function () {\n try {\n observer.unobserve(el);\n } catch (err) {\n console.error(err);\n }\n\n listeners[\"delete\"](el);\n };\n};\n\nvar Link = /*#__PURE__*/function (_react$Component) {\n _inherits(Link, _react$Component);\n\n var _super = _createSuper(Link);\n\n function Link(props) {\n var _this;\n\n _classCallCheck(this, Link);\n\n _this = _super.call(this, props);\n _this.p = void 0;\n\n _this.cleanUpListeners = function () {};\n\n _this.formatUrls = memoizedFormatUrl(function (href, asHref) {\n return {\n href: (0, _router2.addBasePath)(formatUrl(href)),\n as: asHref ? 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as === lastAs) {\n return lastResult\n }\n\n const result = formatFunc(href, as)\n lastHref = href\n lastAs = as\n lastResult = result\n return result\n }\n}\n\nfunction formatUrl(url: Url): string {\n return url && typeof url === 'object' ? formatWithValidation(url) : url\n}\n\nexport type LinkProps = {\n href: Url\n as?: Url\n replace?: boolean\n scroll?: boolean\n shallow?: boolean\n passHref?: boolean\n prefetch?: boolean\n}\n\nlet observer: IntersectionObserver\nconst listeners = new Map<Element, () => void>()\nconst IntersectionObserver =\n typeof window !== 'undefined' ? window.IntersectionObserver : null\nconst prefetched: { [cacheKey: string]: boolean } = {}\n\nfunction getObserver(): IntersectionObserver | undefined {\n // Return shared instance of IntersectionObserver if already created\n if (observer) {\n return observer\n }\n\n // Only create shared IntersectionObserver if supported in browser\n if (!IntersectionObserver) {\n return undefined\n }\n\n return (observer = new IntersectionObserver(\n (entries) => {\n entries.forEach((entry) => {\n if (!listeners.has(entry.target)) {\n return\n }\n\n const cb = listeners.get(entry.target)!\n if (entry.isIntersecting || entry.intersectionRatio > 0) {\n observer.unobserve(entry.target)\n listeners.delete(entry.target)\n cb()\n }\n })\n },\n { rootMargin: '200px' }\n ))\n}\n\nconst listenToIntersections = (el: Element, cb: () => void) => {\n const observer = getObserver()\n if (!observer) {\n return () => {}\n }\n\n observer.observe(el)\n listeners.set(el, cb)\n return () => {\n try {\n observer.unobserve(el)\n } catch (err) {\n console.error(err)\n }\n listeners.delete(el)\n }\n}\n\nclass Link extends Component<LinkProps> {\n p: boolean\n\n constructor(props: LinkProps) {\n super(props)\n if (process.env.NODE_ENV !== 'production') {\n if (props.prefetch) {\n console.warn(\n 'Next.js auto-prefetches automatically based on viewport. The prefetch attribute is no longer needed. More: https://err.sh/vercel/next.js/prefetch-true-deprecated'\n )\n }\n }\n this.p = props.prefetch !== false\n }\n\n cleanUpListeners = () => {}\n\n componentWillUnmount(): void {\n this.cleanUpListeners()\n }\n\n getPaths(): string[] {\n const { pathname } = window.location\n const { href: parsedHref, as: parsedAs } = this.formatUrls(\n this.props.href,\n this.props.as\n )\n const resolvedHref = resolve(pathname, parsedHref)\n return [resolvedHref, parsedAs ? resolve(pathname, parsedAs) : resolvedHref]\n }\n\n handleRef(ref: Element): void {\n if (this.p && IntersectionObserver && ref && ref.tagName) {\n this.cleanUpListeners()\n\n const isPrefetched =\n prefetched[\n this.getPaths().join(\n // Join on an invalid URI character\n '%'\n )\n ]\n if (!isPrefetched) {\n this.cleanUpListeners = listenToIntersections(ref, () => {\n this.prefetch()\n })\n }\n }\n }\n\n // The function is memoized so that no extra lifecycles are needed\n // as per https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html\n formatUrls = memoizedFormatUrl((href, asHref) => {\n return {\n href: addBasePath(formatUrl(href)),\n as: asHref ? addBasePath(formatUrl(asHref)) : asHref,\n }\n })\n\n linkClicked = (e: React.MouseEvent): void => {\n const { nodeName, target } = e.currentTarget as HTMLAnchorElement\n if (\n nodeName === 'A' &&\n ((target && target !== '_self') ||\n e.metaKey ||\n e.ctrlKey ||\n e.shiftKey ||\n (e.nativeEvent && e.nativeEvent.which === 2))\n ) {\n // ignore click for new tab / new window behavior\n return\n }\n\n let { href, as } = this.formatUrls(this.props.href, this.props.as)\n\n if (!isLocal(href)) {\n // ignore click if it's outside our scope (e.g. https://google.com)\n return\n }\n\n const { pathname } = window.location\n href = resolve(pathname, href)\n as = as ? resolve(pathname, as) : href\n\n e.preventDefault()\n\n // avoid scroll for urls with anchor refs\n let { scroll } = this.props\n if (scroll == null) {\n scroll = as.indexOf('#') < 0\n }\n\n // replace state instead of push if prop is present\n Router[this.props.replace ? 'replace' : 'push'](href, as, {\n shallow: this.props.shallow,\n }).then((success: boolean) => {\n if (!success) return\n if (scroll) {\n window.scrollTo(0, 0)\n document.body.focus()\n }\n })\n }\n\n prefetch(options?: PrefetchOptions): void {\n if (!this.p || typeof window === 'undefined') return\n // Prefetch the JSON page if asked (only in the client)\n const paths = this.getPaths()\n // We need to handle a prefetch error here since we may be\n // loading with priority which can reject but we don't\n // want to force navigation since this is only a prefetch\n Router.prefetch(paths[/* href */ 0], paths[/* asPath */ 1], options).catch(\n (err) => {\n if (process.env.NODE_ENV !== 'production') {\n // rethrow to show invalid URL errors\n throw err\n }\n }\n )\n prefetched[\n paths.join(\n // Join on an invalid URI character\n '%'\n )\n ] = true\n }\n\n render() {\n let { children } = this.props\n const { href, as } = this.formatUrls(this.props.href, this.props.as)\n // Deprecated. Warning shown by propType check. If the children provided is a string (<Link>example</Link>) we wrap it in an <a> tag\n if (typeof children === 'string') {\n children = <a>{children}</a>\n }\n\n // This will return the first child, if multiple are provided it will throw an error\n const child: any = Children.only(children)\n const props: {\n onMouseEnter: React.MouseEventHandler\n onClick: React.MouseEventHandler\n href?: string\n ref?: any\n } = {\n ref: (el: any) => {\n this.handleRef(el)\n\n if (child && typeof child === 'object' && child.ref) {\n if (typeof child.ref === 'function') child.ref(el)\n else if (typeof child.ref === 'object') {\n child.ref.current = el\n }\n }\n },\n onMouseEnter: (e: React.MouseEvent) => {\n if (child.props && typeof child.props.onMouseEnter === 'function') {\n child.props.onMouseEnter(e)\n }\n this.prefetch({ priority: true })\n },\n onClick: (e: React.MouseEvent) => {\n if (child.props && typeof child.props.onClick === 'function') {\n child.props.onClick(e)\n }\n if (!e.defaultPrevented) {\n this.linkClicked(e)\n }\n },\n }\n\n // If child is an <a> tag and doesn't have a href attribute, or if the 'passHref' property is\n // defined, we specify the current 'href', so that repetition is not needed by the user\n if (\n this.props.passHref ||\n (child.type === 'a' && !('href' in child.props))\n ) {\n props.href = as || href\n }\n\n // Add the ending slash to the paths. So, we can serve the\n // \"<page>/index.html\" directly.\n if (process.env.__NEXT_EXPORT_TRAILING_SLASH) {\n const rewriteUrlForNextExport = require('../next-server/lib/router/rewrite-url-for-export')\n .rewriteUrlForNextExport\n if (\n props.href &&\n typeof __NEXT_DATA__ !== 'undefined' &&\n __NEXT_DATA__.nextExport\n ) {\n props.href = rewriteUrlForNextExport(props.href)\n }\n }\n\n return React.cloneElement(child, props)\n }\n}\n\nif (process.env.NODE_ENV === 'development') {\n const warn = execOnce(console.error)\n\n // This module gets removed by webpack.IgnorePlugin\n const PropTypes = require('prop-types')\n const exact = require('prop-types-exact')\n // @ts-ignore the property is supported, when declaring it on the class it outputs an extra bit of code which is not needed.\n Link.propTypes = exact({\n href: PropTypes.oneOfType([PropTypes.string, PropTypes.object]).isRequired,\n as: PropTypes.oneOfType([PropTypes.string, PropTypes.object]),\n prefetch: PropTypes.bool,\n replace: PropTypes.bool,\n shallow: PropTypes.bool,\n passHref: PropTypes.bool,\n scroll: PropTypes.bool,\n children: PropTypes.oneOfType([\n PropTypes.element,\n (props: any, propName: string) => {\n const value = props[propName]\n\n if (typeof value === 'string') {\n warn(\n `Warning: You're using a string directly inside <Link>. This usage has been deprecated. Please add an <a> tag as child of <Link>`\n )\n }\n\n return null\n },\n ]).isRequired,\n })\n}\n\nexport default Link\n"]},"metadata":{},"sourceType":"script"}