[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_153":154,"_155":156},"routes/_app.x.$handle.$name",{"_11":12,"_13":14,"_15":16,"_18":19,"_17":-7,"_116":-5,"_20":117,"_22":118,"_119":120,"_121":122,"_25":123,"_24":-5,"_124":-5,"_125":-5,"_126":53,"_127":128,"_129":44,"_130":-5,"_131":-5,"_132":133},"routes/_app.x.$handle.$name.branch.$branch.code.$",{"_11":12,"_13":14,"_15":16,"_17":-7,"_18":19,"_20":21,"_22":23,"_24":-7,"_25":26,"_27":-5,"_28":-5,"_29":-5,"_30":-5,"_31":-5},"handle","testsprivacy","name","tracker-site-3","branchName","main","version","path","","project",{"_33":61,"_13":14,"_45":62,"_63":-5,"_64":53,"_65":66,"_67":66,"_68":19,"_69":-5,"_70":71,"_72":37,"_73":44,"_74":-5,"_75":-5,"_76":77,"_78":79,"_80":-5,"_81":-5,"_82":-5,"_83":-5,"_84":85,"_86":85,"_87":88,"_89":88,"_90":88,"_91":85,"_92":85,"_93":94,"_95":96,"_97":98,"_99":53},"tree",[56],"file","contents",[32],"upstream","pull","ahead","behind","envVars",{"_33":34,"_13":35,"_36":37,"_38":-5,"_39":40,"_41":42,"_43":44,"_45":46,"_17":47,"_48":49,"_50":51,"_52":53,"_54":14,"_18":55},"id","eb4d74d4-482d-46df-85a8-5bdd0259f134","main.ts","fileId","db39868e-8cce-11f1-9d77-1607ee4eb77e","parentId","branchId","2ab077d1-7ef5-4bd7-a5f2-1ed24154c844","branchVersion",5,"latest",true,"createdAt",["D",1787309800580],4,"fileType","http","content","// Tracker Detection demo — test first-party site 3 (host on its own domain).\n// Embeds the demo tracker twice: as \n

First-party tracker data on this domain: Not Found

\n\n

2. Tracker in an <iframe>

Runs in a third-party context, so it writes to the tracker domain's localStorage.

\n \n\n

Visit the other test sites, then go back to the landing page and press\n Find Tracking ID.

Back to landing page

\n\n \n \n\n`;\n\n// Learn more: https://docs.val.town/vals/http/\nexport default async function (req: Request): Promise {\n const url = new URL(req.url);\n\n if (url.pathname === \"/\" || url.pathname === \"/test\") {\n const body = siteHtml\n .replaceAll(\"__TRACKER_DOMAIN__\", TRACKER_DOMAIN)\n .replaceAll(\"__SITE_LABEL__\", SITE_LABEL)\n .replace(\"__LANDING_URL__\", LANDING_URL)\n .replace(\"__STORAGE_KEY__\", STORAGE_KEY);\n\n return new Response(body, {\n headers: {\n \"content-type\": \"text/html; charset=utf-8\",\n \"cache-control\": \"no-store\",\n },\n });\n }\n\n return new Response(\"Not found\", { status: 404 });\n}","deleted",false,"label",[35],{"_33":34,"_13":35,"_36":37,"_38":-5,"_39":40,"_41":42,"_43":44,"_45":57,"_17":47,"_48":49,"_50":51,"_52":53,"_54":14,"_58":59,"_18":60},["D",1787309800580],"children",[],[35],"339f8c6c-b859-41a3-a268-473e563ed3b3",["D",1785495549407],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","imageUrl","userId","99e6832d-c31c-4461-8b4f-4d1fadfb6895","pinnedFileId","pinPreview","pinMigrated","screenshotVersion","likeCount",0,"orgId","019fb284-817a-754d-b95e-3ff8e28b627c","tursoName","tursoHostname","tursoMeasuredAt","pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_11":12,"_115":111},"org",{"_11":12,"_108":109,"_110":111,"_70":71,"_112":113,"_114":53},"branch",{"_17":42,"_13":16,"_33":40,"_100":61,"_101":-5,"_102":-5,"_103":-5,"_104":-5,"_105":-5,"_106":14,"_107":12},"isOwned","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","displayName","Test","avatar","https://lh3.googleusercontent.com/a/ACg8ocIHl3Yn6Vurlt9n6hZMwUdwDHC_K2jf2v6RGL15sVQnrE-wsA=s96-c","tier","free","canRestrictVals","profileImageUrl","adoptOrgId",{"_33":61,"_13":14,"_45":149,"_63":-5,"_64":53,"_65":66,"_67":66,"_68":19,"_69":-5,"_70":71,"_72":37,"_73":44,"_74":-5,"_75":-5,"_76":77,"_78":79,"_80":-5,"_81":-5,"_82":-5,"_83":-5,"_84":85,"_86":85,"_87":88,"_89":88,"_90":88,"_91":85,"_92":85,"_93":150,"_95":151,"_97":152,"_99":53},[146],"files",[146],"counts",{"_136":77,"_137":138,"_139":77,"_31":140,"_141":142},[134],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_33":34,"_13":35,"_36":37,"_38":-5,"_39":40,"_41":42,"_43":44,"_45":46,"_17":47,"_48":49,"_50":51,"_52":53,"_54":14,"_18":135},[35],"pulls","branches",1,"forks",{"_143":77,"_145":77},"connections",{"_143":77,"_144":77},"count","unfilledCount","emptyCount",{"_33":34,"_13":35,"_36":37,"_38":-5,"_39":40,"_41":42,"_43":44,"_45":57,"_17":47,"_48":49,"_50":51,"_52":53,"_54":14,"_58":147,"_18":148},[],[35],["D",1785495549407],{"_11":12,"_115":111},{"_11":12,"_108":109,"_110":111,"_70":71,"_112":113,"_114":53},{"_17":42,"_13":16,"_33":40,"_100":61,"_101":-5,"_102":-5,"_103":-5,"_104":-5,"_105":-5,"_106":14,"_107":12},"ctx",{"_93":-5,"_131":186,"_187":188,"_189":190,"_191":53,"_192":53,"_193":53,"_194":44,"_195":-5,"_196":-7,"_197":-7,"_198":77,"_199":53,"_200":53,"_201":-5,"_202":53,"_203":53,"_204":53,"_205":-5},"ENV",{"_157":158,"_159":160,"_161":16,"_162":163,"_164":165,"_166":167,"_168":169,"_170":171,"_172":173,"_174":175,"_176":177,"_178":179,"_180":181,"_182":183,"_184":185},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","fdb67791413f4386b4dbf18f354029a617f6160f","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]

2. Tracker in an <iframe>

Next

Code