[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_176":177,"_178":179},"routes/_app.x.$handle.$name",{"_97":96,"_32":45,"_105":85,"_27":106,"_13":14,"_107":-5,"_11":108,"_109":110,"_111":112,"_113":114,"_115":116,"_20":-5,"_117":118,"_119":120,"_121":25,"_122":123,"_124":49,"_125":-5,"_126":-5,"_127":128},"routes/_app.x.$handle.$name.branch.$branch.version.$version.diff",{"_11":12,"_13":14,"_15":16,"_17":-5,"_18":-5},"project",{"_43":44,"_32":45,"_38":46,"_47":-5,"_48":49,"_50":51,"_52":51,"_53":-5,"_54":-5,"_18":55,"_56":31,"_57":49,"_58":-5,"_59":-5,"_60":61,"_62":63,"_64":-5,"_65":-5,"_66":-5,"_67":-5,"_68":69,"_70":69,"_71":72,"_73":72,"_74":72,"_75":69,"_76":69,"_77":78,"_79":80,"_81":82,"_83":25},"version",5,"changes",[19],"aiChatInfo","userId",{"_20":21,"_22":23,"_24":25,"_26":25,"_27":28,"_29":28},"file",{"_30":31,"_32":28,"_33":34,"_35":37,"_38":39,"_40":14,"_41":42,"_24":25},"previous",{"_30":31,"_32":28,"_33":34,"_35":36},"deleted",false,"deletedHere","path","main.tsx","latestPath","fileId","31a060b6-2785-11f0-b46e-569c3dd06744","name","fileType","http","content","/** @jsxImportSource https://esm.sh/react */\nimport React, { useEffect, useState } from \"https://esm.sh/react\";\nimport { createRoot } from \"https://esm.sh/react-dom/client\";\nimport { blob } from \"https://esm.town/v/std/blob\";\n\nfunction App() {\n const [imageData, setImageData] = useState(null);\n const [error, setError] = useState(null);\n\n useEffect(() => {\n async function fetchImage() {\n try {\n const response = await fetch(\"/image\");\n if (!response.ok) {\n throw new Error(`HTTP error! status: ${response.status}`);\n }\n const data = await response.json();\n if (data && data.image) {\n setImageData(`data:image/png;base64,${data.image}`);\n } else {\n throw new Error(\"Invalid image data received\");\n }\n } catch (error) {\n console.error(\"Error fetching image:\", error);\n setError(error instanceof Error ? error.message : \"Error loading image\");\n }\n }\n fetchImage();\n }, []);\n\n return (\n

Image from Blob Storage

\n {imageData\n ? (\n \n )\n : error\n ?

Error: {error}

\n :

Loading image...

}\n

\n );\n}\n\nfunction client() {\n createRoot(document.getElementById(\"root\")!).render();\n}\n\nif (typeof document !== \"undefined\") {\n client();\n}\n\nexport default async function server(request: Request): Promise {\n if (request.url.endsWith(\"/image\")) {\n try {\n const jsonData = await blob.getJSON(\"neko\");\n return new Response(JSON.stringify(jsonData), {\n headers: { \"Content-Type\": \"application/json\" },\n });\n } catch (error) {\n console.error(\"Error fetching blob:\", error);\n return new Response(JSON.stringify({ error: \"Server error\", details: error.message }), {\n status: 500,\n headers: { \"Content-Type\": \"application/json\" },\n });\n }\n }\n\n // Serve index.html, aka \"/\"\n return new Response(\n `\n \n \n Image from Blob Storage\n \n \n \n

Image from Blob Storage

\n {imageData\n ? (\n \n )\n : error\n ?

Error: {error}

\n :

Loading image...

}\n

\n );\n}\n\nfunction client() {\n createRoot(document.getElementById(\"root\")!).render();\n}\n\nif (typeof document !== \"undefined\") {\n client();\n}\n\nexport default async function server(request: Request): Promise {\n if (request.url.endsWith(\"/image\")) {\n try {\n const jsonData = await blob.getJSON(\"inu\");\n return new Response(JSON.stringify(jsonData), {\n headers: { \"Content-Type\": \"application/json\" },\n });\n } catch (error) {\n console.error(\"Error fetching blob:\", error);\n return new Response(JSON.stringify({ error: \"Server error\", details: error.message }), {\n status: 500,\n headers: { \"Content-Type\": \"application/json\" },\n });\n }\n }\n\n // Serve index.html, aka \"/\"\n return new Response(\n `\n \n \n Image from Blob Storage\n \n \n \n

\n \n \n \n \n `,\n {\n headers: {\n \"content-type\": \"text/html\",\n },\n },\n );\n}\n\nconst css = `\nbody {\n margin: 0;\n font-family: system-ui, sans-serif;\n display: flex;\n justify-content: center;\n align-items: center;\n min-height: 100vh;\n background-color: #f0f0f0;\n}\n#root {\n background-color: white;\n padding: 20px;\n border-radius: 8px;\n box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);\n}\nh1 {\n color: #333;\n}\n`;","createdAt",["D",1727805559775],"branchVersion","branchId","31962a60-2785-11f0-b46e-569c3dd06744","id","3195d934-2785-11f0-b46e-569c3dd06744","getJsonAndRenderAsImage",["D",1746211346450],"deletedAt","legacyEnvVars",true,"privacy","public","httpPrivacy","description","imageUrl","97567c3b-8285-4589-880d-547c23383b76","pinnedFileId","pinPreview","pinMigrated","screenshotVersion","likeCount",0,"orgId","112e17ac-118d-4072-aca6-a4ddc6b3970f","tursoName","tursoHostname","tursoMeasuredAt","pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_97":96,"_104":100},"org",{"_97":96,"_98":-5,"_99":100,"_18":55,"_101":102,"_103":25},"branch",{"_13":84,"_32":85,"_43":42,"_86":44,"_87":88,"_89":61,"_90":51,"_91":92,"_93":63,"_94":45,"_95":96},"isOwned",6,"main","projectId","forkedBranchId","30e72664-2785-11f0-b46e-569c3dd06744","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","30e6c764-2785-11f0-b46e-569c3dd06744","forkedProjectOrgId","projectName","userHandle","ashryanio","handle","displayName","avatar","https://img.clerk.com/eyJ0eXBlIjoicHJveHkiLCJzcmMiOiJodHRwczovL2ltYWdlcy5jbGVyay5kZXYvb2F1dGhfZ2l0aHViL2ltZ18yaG5kR0hRRTM0S1BSeXlIR2hCdjFqb1dTS3AifQ","tier","pro","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_43":44,"_32":45,"_38":172,"_47":-5,"_48":49,"_50":51,"_52":51,"_53":-5,"_54":-5,"_18":55,"_56":31,"_57":49,"_58":-5,"_59":-5,"_60":61,"_62":63,"_64":-5,"_65":-5,"_66":-5,"_67":-5,"_68":69,"_70":69,"_71":72,"_73":72,"_74":72,"_75":69,"_76":69,"_77":173,"_79":174,"_81":175,"_83":25},"tree",[163,164],"files",[163,164],"counts",{"_153":61,"_154":149,"_155":61,"_156":157,"_158":159},"contents",[137,138],"upstreamProject",{"_43":92,"_32":135,"_53":-5,"_54":-5,"_50":51,"_77":136},"upstreamBranch",{"_43":88,"_38":129,"_130":131,"_32":85,"_86":92,"_13":132,"_87":-5,"_89":-5,"_133":134,"_47":-5,"_83":25,"_50":51,"_95":96,"_62":63,"_94":135},"emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},["D",1746211345302],"updatedAt",["D",1727801615583],29,"lockfileKey","1746245617780-esm.town_v_ashryanio_getBlobAndRenderAsImage@29-main","getBlobAndRenderAsImage",{"_97":96,"_104":100},{"_43":146,"_32":147,"_30":148,"_140":-5,"_41":42,"_40":149,"_141":49,"_38":150,"_13":61,"_33":20,"_35":151,"_24":25,"_144":-5,"_27":152},{"_43":139,"_32":28,"_30":31,"_140":-5,"_41":42,"_40":14,"_141":25,"_38":142,"_13":143,"_33":34,"_35":37,"_24":25,"_144":-5,"_27":145},"31ba3194-2785-11f0-b46e-569c3dd06744","parentId","latest",["D",1727805559775],4,"label",[28],"31a06872-2785-11f0-b46e-569c3dd06744","README.md","31a068ea-2785-11f0-b46e-569c3dd06744",1,["D",1727800817769],"# getJsonAndRenderAsImage\n\nShows how to get a JSON object containing a base64 imaged stored in Val Town blob storage and render it as an image in the DOM with React.\n\n## Setup\n\nMake sure you have a JSON object named `image-test` in your Val Town blob storage (alternatively, you can change the key name in the blob getter in the script).\n\nThe object should look like this:\n\n```json\n{\n \"image\": \"base64stringgoeshere\"\n}\n```\n\nTo easily upload an image to your blob storage, [fork this val](\ngetBlobAndRenderAsImage), run it, and enter your API key in the password input.\n\n## How it works\n\n1. Fetching the JSON:\n\n - The client-side React component makes a fetch request to \"/image\".\n - This request is handled by our server function.\n\n\n2. Server-side handling:\n\n - The server function calls `blob.getJSON(\"image-test\")`.\n - This `blob.getJSON()` method makes an HTTP request to the Val Town API.\n - The API returns a Response object containing the JSON data.\n\n\n3. Processing the blob on the server:\n\n - We receive this Response object from `blob.getJSON()`.\n - We don't need to extract the data on the server side.\n - We can directly return this Response object to the client.\n\n\n4. Sending the response to the client:\n\n - We set the appropriate \"Content-Type\" header (e.g., \"application/json\").\n - We return the Response object to the client.\n\n\n5. Client-side handling:\n\n - The fetch request in the React component receives the Response.\n - We call `response.json()` to parse the JSON object from the Response.\n\n\n6. Creating a data URL:\n\n - We extract the image data from the JSON object at `data.image`.\n - We prepend the data URL prefix to the image data.\n - This data URL is a base64-encoded string representing the image.\n\n\n7. Updating the React state:\n\n - We set the data URL as the state of our component.\n\n\n8. Rendering the image:\n\n - We use the data URL as the src attribute of an `` tag.\n - The browser decodes the base64 data and renders the image.\n\n## Further reading on Val Town blobs\n\n- [Blob storage overview in Val Town docs](https://docs.val.town/std/blob/)\n- [Val Town REST API references for blobs](https://docs.val.town/openapi#tag/blobs)\n- [Val Town blob std lib source code](https://www.val.town/v/std/blob)",[147],"pulls","branches","forks","envVars",{"_160":61,"_162":61},"connections",{"_160":61,"_161":61},"count","unfilledCount","emptyCount",{"_43":146,"_32":147,"_30":148,"_140":-5,"_41":42,"_40":149,"_141":49,"_38":169,"_13":61,"_33":20,"_35":151,"_24":25,"_144":-5,"_166":170,"_27":171},{"_43":139,"_32":28,"_30":31,"_140":-5,"_41":42,"_40":14,"_141":25,"_38":165,"_13":143,"_33":34,"_35":37,"_24":25,"_144":-5,"_166":167,"_27":168},["D",1727805559775],"children",[],[28],["D",1727800817769],[],[147],["D",1746211346450],{"_97":96,"_104":100},{"_97":96,"_98":-5,"_99":100,"_18":55,"_101":102,"_103":25},{"_13":84,"_32":85,"_43":42,"_86":44,"_87":88,"_89":61,"_90":51,"_91":92,"_93":63,"_94":45,"_95":96},"ctx",{"_77":-5,"_126":209,"_210":211,"_212":213,"_214":25,"_215":25,"_216":25,"_217":49,"_218":-5,"_219":-7,"_220":-7,"_221":61,"_222":25,"_223":25,"_224":-5,"_225":25,"_226":25,"_227":25,"_228":-5},"ENV",{"_180":181,"_182":183,"_184":85,"_185":186,"_187":188,"_189":190,"_191":192,"_193":194,"_195":196,"_197":198,"_199":200,"_201":202,"_203":204,"_205":206,"_207":208},"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 · v5