{"ast":null,"code":"\"use strict\";\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\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 (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 = false ? 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(entries => {\n    entries.forEach(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 = (el, cb) => {\n  var observer = getObserver();\n\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\n    listeners.delete(el);\n  };\n};\n\nclass Link extends _react.Component {\n  constructor(props) {\n    super(props);\n    this.p = void 0;\n\n    this.cleanUpListeners = () => {};\n\n    this.formatUrls = memoizedFormatUrl((href, asHref) => {\n      return {\n        href: formatUrl(href),\n        as: asHref ? formatUrl(asHref) : asHref\n      };\n    });\n\n    this.linkClicked = e => {\n      var {\n        nodeName,\n        target\n      } = e.currentTarget;\n\n      if (nodeName === 'A' && (target && target !== '_self' || e.metaKey || e.ctrlKey || e.shiftKey || e.nativeEvent && e.nativeEvent.which === 2)) {\n        // ignore click for new tab / new window behavior\n        return;\n      }\n\n      var {\n        href,\n        as\n      } = 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      var {\n        pathname\n      } = window.location;\n      href = (0, _url.resolve)(pathname, href);\n      as = as ? (0, _url.resolve)(pathname, as) : href;\n      e.preventDefault(); //  avoid scroll for urls with anchor refs\n\n      var {\n        scroll\n      } = this.props;\n\n      if (scroll == null) {\n        scroll = as.indexOf('#') < 0;\n      } // replace state instead of push if prop is present\n\n\n      _router.default[this.props.replace ? 'replace' : 'push'](href, as, {\n        shallow: this.props.shallow\n      }).then(success => {\n        if (!success) return;\n\n        if (scroll) {\n          window.scrollTo(0, 0);\n          document.body.focus();\n        }\n      });\n    };\n\n    if (false) {\n      if (props.prefetch) {\n        console.warn('Next.js auto-prefetches automatically based on viewport. The prefetch attribute is no longer needed. More: https://err.sh/zeit/next.js/prefetch-true-deprecated');\n      }\n    }\n\n    this.p = props.prefetch !== false;\n  }\n\n  componentWillUnmount() {\n    this.cleanUpListeners();\n  }\n\n  getPaths() {\n    var {\n      pathname\n    } = window.location;\n    var {\n      href: parsedHref,\n      as: parsedAs\n    } = this.formatUrls(this.props.href, this.props.as);\n    var resolvedHref = (0, _url.resolve)(pathname, parsedHref);\n    return [resolvedHref, parsedAs ? (0, _url.resolve)(pathname, parsedAs) : resolvedHref];\n  }\n\n  handleRef(ref) {\n    if (this.p && IntersectionObserver && ref && ref.tagName) {\n      this.cleanUpListeners();\n      var isPrefetched = prefetched[this.getPaths().join( // Join on an invalid URI character\n      '%')];\n\n      if (!isPrefetched) {\n        this.cleanUpListeners = listenToIntersections(ref, () => {\n          this.prefetch();\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\n\n  prefetch(options) {\n    if (!this.p || true) return; // Prefetch the JSON page if asked (only in the client)\n\n    var paths = this.getPaths(); // 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\n    _router.default.prefetch(paths[\n    /* href */\n    0], paths[\n    /* asPath */\n    1], options).catch(err => {\n      if (false) {\n        // rethrow to show invalid URL errors\n        throw err;\n      }\n    });\n\n    prefetched[paths.join( // Join on an invalid URI character\n    '%')] = true;\n  }\n\n  render() {\n    var {\n      children\n    } = this.props;\n    var {\n      href,\n      as\n    } = this.formatUrls(this.props.href, this.props.as); // Deprecated. Warning shown by propType check. If the children provided is a string (<Link>example</Link>) we wrap it in an <a> tag\n\n    if (typeof children === 'string') {\n      children = _react.default.createElement(\"a\", null, children);\n    } // This will return the first child, if multiple are provided it will throw an error\n\n\n    var child = _react.Children.only(children);\n\n    var props = {\n      ref: el => {\n        this.handleRef(el);\n\n        if (child && typeof child === 'object' && child.ref) {\n          if (typeof child.ref === 'function') child.ref(el);else if (typeof child.ref === 'object') {\n            child.ref.current = el;\n          }\n        }\n      },\n      onMouseEnter: e => {\n        if (child.props && typeof child.props.onMouseEnter === 'function') {\n          child.props.onMouseEnter(e);\n        }\n\n        this.prefetch({\n          priority: true\n        });\n      },\n      onClick: e => {\n        if (child.props && typeof child.props.onClick === 'function') {\n          child.props.onClick(e);\n        }\n\n        if (!e.defaultPrevented) {\n          this.linkClicked(e);\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\n    if (this.props.passHref || child.type === 'a' && !('href' in child.props)) {\n      props.href = as || href;\n    } // Add the ending slash to the paths. So, we can serve the\n    // \"<page>/index.html\" directly.\n\n\n    if (process.env.__NEXT_EXPORT_TRAILING_SLASH) {\n      var rewriteUrlForNextExport = require('../next-server/lib/router/rewrite-url-for-export').rewriteUrlForNextExport;\n\n      if (props.href && typeof __NEXT_DATA__ !== 'undefined' && __NEXT_DATA__.nextExport) {\n        props.href = rewriteUrlForNextExport(props.href);\n      }\n    }\n\n    return _react.default.cloneElement(child, props);\n  }\n\n}\n\nif (false) {\n  var warn = (0, _utils.execOnce)(console.error); // This module gets removed by webpack.IgnorePlugin\n\n  var PropTypes = require('prop-types');\n\n  var exact = require('prop-types-exact'); // @ts-ignore the property is supported, when declaring it on the class it outputs an extra bit of code which is not needed.\n\n\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([PropTypes.element, (props, propName) => {\n      var value = props[propName];\n\n      if (typeof value === 'string') {\n        warn(\"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      return null;\n    }]).isRequired\n  });\n}\n\nvar _default = Link;\nexports.default = _default;","map":null,"metadata":{},"sourceType":"script"}