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Was: ' + url);\n invariant(url, 'Invalid URL: cannot be empty');\n}\n\nfunction getHostUri(): string | null {\n if (Constants.manifest?.hostUri) {\n return Constants.manifest.hostUri;\n } else if (!Constants.manifest?.hostUri && !hasCustomScheme()) {\n // we're probably not using up-to-date xdl, so just fake it for now\n // we have to remove the /--/ on the end since this will be inserted again later\n return removeScheme(Constants.linkingUri).replace(/\\/--($|\\/.*$)/, '');\n } else {\n return null;\n }\n}\n\nfunction isExpoHosted(): boolean {\n const hostUri = getHostUri();\n return !!(\n hostUri &&\n (/^(.*\\.)?(expo\\.io|exp\\.host|exp\\.direct|expo\\.test)(:.*)?(\\/.*)?$/.test(hostUri) ||\n Constants.manifest?.developer)\n );\n}\n\nfunction removeScheme(url: string): string {\n return url.replace(/^[a-zA-Z0-9+.-]+:\\/\\//, '');\n}\n\nfunction removePort(url: string): string {\n return url.replace(/(?=([a-zA-Z0-9+.-]+:\\/\\/)?[^/]):\\d+/, '');\n}\n\nfunction removeLeadingSlash(url: string): string {\n return url.replace(/^\\//, '');\n}\n\nfunction removeTrailingSlashAndQueryString(url: string): string {\n return url.replace(/\\/?\\?.*$/, '');\n}\n\nfunction ensureLeadingSlash(input: string, shouldAppend: boolean): string {\n const hasSlash = input.endsWith('/');\n if (hasSlash && !shouldAppend) {\n return input.substring(0, input.length - 1);\n } else if (!hasSlash && shouldAppend) {\n return `${input}/`;\n }\n return input;\n}\n\nfunction ensureTrailingSlash(input: string, shouldAppend: boolean): string {\n const hasSlash = input.startsWith('/');\n if (hasSlash && !shouldAppend) {\n return input.substring(1);\n } else if (!hasSlash && shouldAppend) {\n return `/${input}`;\n }\n return input;\n}\n\n/**\n * Create a URL that works for the environment the app is currently running in.\n * The scheme in bare and standalone must be defined in the app.json under `expo.scheme`.\n *\n * **Examples**\n *\n * - Bare: empty string\n * - Standalone, Custom: `yourscheme:///path`\n * - Web (dev): `https://localhost:19006/path`\n * - Web (prod): `https://myapp.com/path`\n * - Expo Client (dev): `exp://128.0.0.1:19000/--/path`\n * - Expo Client (prod): `exp://exp.host/@yourname/your-app/--/path`\n *\n * @param path addition path components to append to the base URL.\n * @param queryParams An object of parameters that will be converted into a query string.\n */\nexport function makeUrl(path: string = '', queryParams?: QueryParams, scheme?: string): string {\n return createURL(path, { queryParams, scheme, isTripleSlashed: true });\n}\n\n/**\n * Create a URL that works for the environment the app is currently running in.\n * The scheme in bare and standalone must be defined in the Expo config (app.config.js or app.json) under `expo.scheme`.\n *\n * **Examples**\n *\n * - Bare: `<scheme>://path` -- uses provided scheme or scheme from Expo config `scheme`.\n * - Standalone, Custom: `yourscheme://path`\n * - Web (dev): `https://localhost:19006/path`\n * - Web (prod): `https://myapp.com/path`\n * - Expo Client (dev): `exp://128.0.0.1:19000/--/path`\n * - Expo Client (prod): `exp://exp.host/@yourname/your-app/--/path`\n *\n * @param path addition path components to append to the base URL.\n * @param scheme URI protocol `<scheme>://` that must be built into your native app.\n * @param queryParams An object of parameters that will be converted into a query string.\n */\nexport function createURL(\n path: string,\n {\n scheme,\n queryParams = {},\n isTripleSlashed = false,\n }: {\n scheme?: string;\n queryParams?: QueryParams;\n isTripleSlashed?: boolean;\n } = {}\n): string {\n if (Platform.OS === 'web') {\n if (!Platform.isDOMAvailable) return '';\n\n const origin = ensureLeadingSlash(window.location.origin, false);\n let queryString = qs.stringify(queryParams);\n if (queryString) {\n queryString = `?${queryString}`;\n }\n\n let outputPath = path;\n if (outputPath) outputPath = ensureTrailingSlash(path, true);\n\n return encodeURI(`${origin}${outputPath}${queryString}`);\n }\n\n const resolvedScheme = resolveScheme({ scheme });\n\n let hostUri = getHostUri() || '';\n\n if (hasCustomScheme() && isExpoHosted()) {\n hostUri = '';\n }\n\n if (path) {\n if (isExpoHosted() && hostUri) {\n path = `/--/${removeLeadingSlash(path)}`;\n }\n if (isTripleSlashed && !path.startsWith('/')) {\n path = `/${path}`;\n }\n } else {\n path = '';\n }\n\n // merge user-provided query params with any that were already in the hostUri\n // e.g. release-channel\n let queryString = '';\n const queryStringMatchResult = hostUri.match(/(.*)\\?(.+)/);\n if (queryStringMatchResult) {\n hostUri = queryStringMatchResult[1];\n queryString = queryStringMatchResult[2];\n let paramsFromHostUri = {};\n try {\n const parsedParams = qs.parse(queryString);\n if (typeof parsedParams === 'object') {\n paramsFromHostUri = parsedParams;\n }\n } catch (e) {}\n queryParams = {\n ...queryParams,\n ...paramsFromHostUri,\n };\n }\n queryString = qs.stringify(queryParams);\n if (queryString) {\n queryString = `?${queryString}`;\n }\n\n hostUri = ensureTrailingSlash(hostUri, !isTripleSlashed);\n\n return encodeURI(\n `${resolvedScheme}:${isTripleSlashed ? '/' : ''}/${hostUri}${path}${queryString}`\n );\n}\n\n/**\n * Returns the components and query parameters for a given URL.\n *\n * @param url Input URL to parse\n */\nexport function parse(url: string): ParsedURL {\n validateURL(url);\n\n const parsed = URL(url, /* parseQueryString */ true);\n\n for (const param in parsed.query) {\n parsed.query[param] = decodeURIComponent(parsed.query[param]!);\n }\n const queryParams = parsed.query;\n\n const hostUri = getHostUri() || '';\n const hostUriStripped = removePort(removeTrailingSlashAndQueryString(hostUri));\n\n let path = parsed.pathname || null;\n let hostname = parsed.hostname || null;\n let scheme = parsed.protocol || null;\n\n if (scheme) {\n // Remove colon at end\n scheme = scheme.substring(0, scheme.length - 1);\n }\n\n if (path) {\n path = removeLeadingSlash(path);\n\n let expoPrefix: string | null = null;\n if (hostUriStripped) {\n const parts = hostUriStripped.split('/');\n expoPrefix = parts\n .slice(1)\n .concat(['--/'])\n .join('/');\n }\n\n if (isExpoHosted() && !hasCustomScheme() && expoPrefix && path.startsWith(expoPrefix)) {\n path = path.substring(expoPrefix.length);\n hostname = null;\n } else if (path.indexOf('+') > -1) {\n path = path.substring(path.indexOf('+') + 1);\n }\n }\n\n return {\n hostname,\n path,\n queryParams,\n scheme,\n };\n}\n\n/**\n * Add a handler to Linking changes by listening to the `url` event type\n * and providing the handler\n *\n * See https://reactnative.dev/docs/linking.html#addeventlistener\n */\nexport function addEventListener(type: string, handler: URLListener) {\n NativeLinking.addEventListener(type, handler);\n}\n\n/**\n * Remove a handler by passing the `url` event type and the handler.\n *\n * See https://reactnative.dev/docs/linking.html#removeeventlistener\n */\nexport function removeEventListener(type: string, handler: URLListener) {\n NativeLinking.removeEventListener(type, handler);\n}\n\n/**\n * **Native:** Parses the link that opened the app. If no link opened the app, all the fields will be \\`null\\`.\n * **Web:** Parses the current window URL.\n */\nexport async function parseInitialURLAsync(): Promise<ParsedURL> {\n const initialUrl = await NativeLinking.getInitialURL();\n if (!initialUrl) {\n return {\n scheme: null,\n hostname: null,\n path: null,\n queryParams: null,\n };\n }\n\n return parse(initialUrl);\n}\n\n/**\n * Launch an Android intent with optional extras\n *\n * @platform android\n */\nexport async function sendIntent(\n action: string,\n extras?: { key: string; value: string | number | boolean }[]\n): Promise<void> {\n if (Platform.OS === 'android') {\n return await NativeLinking.sendIntent(action, extras);\n }\n throw new UnavailabilityError('Linking', 'sendIntent');\n}\n\n/**\n * Attempt to open the system settings for an the app.\n *\n * @platform ios\n */\nexport async function openSettings(): Promise<void> {\n if (Platform.OS === 'web') {\n throw new UnavailabilityError('Linking', 'openSettings');\n }\n if (NativeLinking.openSettings) {\n return await NativeLinking.openSettings();\n }\n await openURL('app-settings:');\n}\n\n/**\n * If the app launch was triggered by an app link,\n * it will give the link url, otherwise it will give `null`\n */\nexport async function getInitialURL(): Promise<string | null> {\n return (await NativeLinking.getInitialURL()) ?? null;\n}\n\n/**\n * Try to open the given `url` with any of the installed apps.\n */\nexport async function openURL(url: string): Promise<true> {\n validateURL(url);\n return await NativeLinking.openURL(url);\n}\n\n/**\n * Determine whether or not an installed app can handle a given URL.\n * On web this always returns true because there is no API for detecting what URLs can be opened.\n */\nexport async function canOpenURL(url: string): Promise<boolean> {\n validateURL(url);\n return await NativeLinking.canOpenURL(url);\n}\n\n/**\n * Returns the initial URL followed by any subsequent changes to the URL.\n */\nexport function useUrl(): string | null {\n const [url, setLink] = useState<string | null>(null);\n\n function onChange(event: { url: string }) {\n setLink(event.url);\n }\n\n useEffect(() => {\n getInitialURL().then(url => setLink(url));\n addEventListener('url', onChange);\n return () => removeEventListener('url', onChange);\n }, []);\n\n return url;\n}\n\nexport * from './Linking.types';\n"]}