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\n First-Party Context Demo\n

\n This page loads the Klarna Web SDK directly — no\n iframes. The payment button renders in the merchant's first-party\n context.\n

\n\n \n

\n How it works:\n

\n Web SDK is initialized directly on this page — no iframe container.\n
\n initiationMode: \"ON_PAGE\"\n opens the payment popup while keeping this page intact.\n
\n Returning false from\n on(\"complete\")\n prevents the SDK from redirecting the window.\n

\n\n \n

\n \n \n \n Simulate blocked popups\n \n \n \n

\n\n \n

\n Payment Button\n

\n\n \n

\n Payment Status\n

\n Waiting for payment...\n

\n\n \n \n\n \n \n\n","createdAt",["D",1773939387938],"branchVersion","branchId","2c36ce54-00e6-11f1-a76a-42dde27851f2","id","2c36560e-00e6-11f1-a76a-42dde27851f2","JPM-setup",["D",1770112400938],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","How to limit usage to one iframe of initializing Klarna Web 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{\n readFile,\n serveFile,\n} from \"https://esm.town/v/std/utils@85-main/index.ts\";\n\nexport default async function (req: Request) {\n const url = new URL(req.url);\n const path = url.pathname;\n\n // Serve frontend files\n if (path.startsWith(\"/frontend/\")) {\n return serveFile(path, import.meta.url);\n }\n\n // Popup blocking demo at top-level path\n if (path === \"/popup-blocking-demo\" || path === \"/popup-blocking-demo.html\") {\n return serveFile(\"/frontend/popup-blocking-demo.html\", import.meta.url);\n }\n\n // Serve shared files\n if (path.startsWith(\"/shared/\")) {\n return serveFile(path, import.meta.url);\n }\n\n // Main page (first-party context)\n const html = await readFile(\"/frontend/index.html\", import.meta.url);\n return new Response(html, {\n headers: { \"Content-Type\": \"text/html\" },\n });\n}\n","label",[137],"f54e8f72-00e9-11f1-a3d1-42dde27851f2","deno.json","f54e904e-00e9-11f1-a3d1-42dde27851f2",10,["D",1770114026808],"{\n \"$schema\": \"https://raw.githubusercontent.com/denoland/deno/98f62cee78e85bfc47c62ed703777c6bc8794f1c/cli/schemas/config-file.v1.json\",\n \"lock\": false,\n \"compilerOptions\": {\n \"noImplicitAny\": false,\n \"strict\": true,\n \"types\": [\"https://www.val.town/types/valtown.d.ts\"],\n \"lib\": [\n \"dom\",\n \"dom.iterable\",\n \"dom.asynciterable\",\n \"deno.ns\",\n \"deno.unstable\"\n ]\n },\n \"lint\": {\n \"include\": [\"deno:/https/esm.town/**/*\"],\n \"rules\": {\n \"exclude\": [\"no-explicit-any\"]\n }\n },\n \"node_modules_dir\": false,\n \"experimental\": {\n \"unstable-node-globals\": true,\n \"unstable-temporal\": true,\n \"unstable-worker-options\": true,\n \"unstable-sloppy-imports\": true\n }\n}",[148],"dd78a232-1180-11f1-908f-42dde27851f2","CLAUDE.md","b5798410-117e-11f1-bf22-42dde27851f2",51,["D",1771938059261],1,"# CLAUDE.md\n\nThis file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.\n\n## Project Overview\n\nThis is a **Val Town project** — a Klarna payment integration prototype demonstrating iframe-based payment flows for the JPM (J.P. Morgan) partnership. It runs on the Val Town platform (Deno serverless runtime, not Node.js).\n\n## Running the Project\n\nThis project is deployed and run via Val Town. Locally, use the `vt` CLI:\n\n```bash\nvt dev # Start local dev server\nvt push # Deploy to Val Town\nvt pull # Pull latest from Val Town\n```\n\nThe project has a `.vt/state.json` that tracks the Val Town project ID and branch.\n\n## Architecture\n\nThe app uses a **single-iframe architecture** for Klarna payment integration:\n\n1. **`main.ts`** — HTTP request handler (Val Town entry point). Serves static files from `frontend/` and `shared/` using Val Town's `serveFile`/`readFile` utilities.\n\n2. **`frontend/index.html`** — First-party merchant page. Embeds a single `\n \n \n\n \n

Payment Status

\n \nWaiting for payment...\n

\n \n\n \n \n\n",[],[184,275],"9239fa00-23b4-11f1-ae80-42dde27851f2",["D",1773939387938],[],[184,32],["D",1770114025840],[208,209,210,211,212],[184],"d2ffec40-130e-11f1-b43d-42dde27851f2","settings.local.json","78d7359c-117f-11f1-96b3-42dde27851f2",81,["D",1772108981555],"{\n \"permissions\": {\n \"allow\": [\n \"Bash(grep:*)\",\n \"Bash(find:*)\",\n \"Bash(npx jest:*)\"\n ]\n }\n}\n",[],[190,290],["D",1771937460882],[206],[190],["D",1770112400938],["D",1789518676100],{"_98":97,"_105":101},{"_98":97,"_99":-5,"_100":101,"_18":53,"_102":103,"_104":24},{"_13":87,"_31":88,"_41":40,"_89":42,"_90":-5,"_91":-5,"_92":-5,"_93":-5,"_94":-5,"_95":43,"_96":97},"ctx",{"_80":-5,"_125":338,"_339":340,"_341":342,"_343":24,"_344":24,"_345":24,"_346":57,"_347":-5,"_348":-7,"_349":-7,"_350":61,"_351":24,"_352":24,"_353":-5,"_354":24,"_355":24,"_356":24,"_357":-5},"ENV",{"_309":310,"_311":312,"_313":88,"_314":315,"_316":317,"_318":319,"_320":321,"_322":323,"_324":325,"_326":327,"_328":329,"_330":331,"_332":333,"_334":335,"_336":337},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","e87eb04e707cf64e7e532c8e8ec395f209e17f15","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"]

Diff · v96