GraphiQL 4 with React 19 and GraphiQL Explorer

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{ ArticleModel } from \"./_api.ts\";\nimport { createServer } from \"./_server.ts\";\n\nconst typeDefs = `\nscalar JSON\n\ntype Article {\n id: Int!\n title: String!\n body: String\n date: String!\n authors: JSON\n type: String!\n}\n\ntype Query {\n article(id: Int!): Article\n}\n`;\n\nconst resolvers = {\n Query: {\n article: (_, args: { id: number }) => new ArticleModel(args.id),\n },\n Article: {\n date: async (article: ArticleModel, args) =>\n (await article.date(args)).toLocaleString(\"en-GB\", {\n dateStyle: \"short\",\n }),\n },\n};\n\nexport const handler = await createServer(\n typeDefs,\n resolvers,\n `\nquery {\n article(id: 0) {\n id\n title\n body\n date\n authors\n }\n} \n`,\n);","import { ArticleModel } from \"./_api.ts\";\nimport { createServer } from \"./_server.ts\";\n\nconst typeDefs = `\nscalar JSON\n\ntype Article {\n id: Int!\n title: String!\n body: String\n date: String!\n authors: JSON\n type: String\n}\n\ntype Query {\n article(id: Int!): Article\n}\n`;\n\nconst resolvers = {\n Query: {\n article: (_, args: { id: number }) => new ArticleModel(args.id),\n },\n Article: {\n date: async (article: ArticleModel, args) =>\n (await article.date(args)).toLocaleString(\"en-GB\", {\n dateStyle: \"short\",\n }),\n },\n};\n\nexport const handler = await createServer(\n typeDefs,\n resolvers,\n `\nquery {\n article(id: 0) {\n id\n title\n body\n date\n authors\n }\n} \n`,\n);","createdAt",["D",1788433197025],"branchVersion","branchId","95857aad-eae7-41f5-b625-6f09c5f02e7e","id","b87b5008-b130-4e33-8c91-46d9f07b73b0","lazy-content-model",["D",1788431963286],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","imageUrl","6c391ee0-4213-11f0-b47d-130946788076","pinnedFileId","pinPreview","pinMigrated","screenshotVersion","likeCount",0,"orgId","5f48d3e7-8fbc-497c-b83c-47763c2fa1d3","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":54,"_101":102,"_103":25},"branch",{"_13":83,"_32":84,"_43":42,"_85":44,"_86":87,"_88":89,"_90":50,"_91":92,"_93":62,"_94":45,"_95":96},"isOwned",17,"main","projectId","forkedBranchId","854dec58-4213-11f0-ba4f-76b3cceeab13","forkedBranchVersion",99,"forkedProjectPrivacy","forkedProjectId","854da518-4213-11f0-ba4f-76b3cceeab13","forkedProjectOrgId","projectName","userHandle","apaleslimghost","handle","displayName","avatar","https://img.clerk.com/eyJ0eXBlIjoicHJveHkiLCJzcmMiOiJodHRwczovL2ltYWdlcy5jbGVyay5kZXYvb2F1dGhfZ2l0aHViL2ltZ18yeTVqNzlNUVlaOVBRSXpjSFoza0VqbUVrZ00ifQ","tier","free","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_43":44,"_32":45,"_38":186,"_47":-5,"_48":25,"_49":50,"_51":50,"_52":-5,"_53":-5,"_18":54,"_55":-5,"_56":25,"_57":-5,"_58":-5,"_59":60,"_61":62,"_63":-5,"_64":-5,"_65":-5,"_66":-5,"_67":68,"_69":68,"_70":71,"_72":71,"_73":71,"_74":68,"_75":68,"_76":187,"_78":188,"_80":189,"_82":25},"tree",[173,174,175],"files",[173,174,175],"counts",{"_163":60,"_164":144,"_165":60,"_166":167,"_168":169},"contents",[137,138,139],"upstreamProject",{"_43":92,"_32":135,"_52":-5,"_53":-5,"_49":50,"_76":136},"upstreamBranch",{"_43":87,"_38":130,"_131":132,"_32":84,"_85":92,"_13":89,"_86":-5,"_88":-5,"_133":134,"_47":-5,"_82":25,"_49":50,"_95":96,"_61":62,"_94":135},"emptyEnvVars","flags",[],"hasHttpFiles",true,"grants","orgs","customDomains",{},["D",1749131205673],"updatedAt",["D",1750072689417],"lockfileKey","1750072689798-esm.town_v_apaleslimghost_graphql-crash-course@99-main","graphql-crash-course",{"_97":96,"_104":100},{"_43":159,"_32":28,"_30":31,"_143":-5,"_41":42,"_40":14,"_145":25,"_38":160,"_13":161,"_33":34,"_35":37,"_24":25,"_149":-5,"_27":162},{"_43":151,"_32":152,"_30":153,"_143":-5,"_41":42,"_40":154,"_145":25,"_38":155,"_13":156,"_33":147,"_35":157,"_24":25,"_149":-5,"_27":158},{"_43":140,"_32":141,"_30":142,"_143":-5,"_41":42,"_40":144,"_145":125,"_38":146,"_13":60,"_33":147,"_35":148,"_24":25,"_149":-5,"_27":150},"568486b2-5de4-49c6-a6c9-6b92cd5df31c","_server.ts","01a066da-14da-777f-b159-691781af24af","parentId",1,"latest",["D",1788431963286],"script","import { ApolloServer, HeaderMap, HTTPGraphQLRequest } from \"npm:@apollo/server\";\n\nconst graphIQLMarkup = (query) => `\n\n\n\n \n \n \n GraphiQL 4 with React 19 and GraphiQL Explorer\n \n \n \n \n \n \n \n

Loading…

\n \n\n`;\n\nexport async function createServer(typeDefs: any, resolvers: any, query: string = \"\") {\n const server = new ApolloServer({\n typeDefs,\n resolvers,\n introspection: true,\n csrfPrevention: false,\n plugins: [\n {\n async serverWillStart() {\n return {\n async renderLandingPage() {\n return { html: graphIQLMarkup(query) };\n },\n };\n },\n },\n ],\n });\n\n await server.start();\n\n return async function handler(request: Request) {\n const url = new URL(request.url);\n if (url.pathname !== \"/\") return new Response(\"\", { status: 404 });\n\n const body = request.method === \"POST\" ? await request.json() : {};\n\n const httpGraphQLRequest: HTTPGraphQLRequest = {\n method: request.method,\n headers: new HeaderMap(request.headers.entries()),\n search: url.search,\n body,\n };\n\n const response = await server\n .executeHTTPGraphQLRequest({\n httpGraphQLRequest,\n context: () => ({}),\n });\n\n return new Response(\n response.body.kind === \"complete\" ? response.body.string : response.body.asyncIterator,\n {\n status: response.status ?? 200,\n headers: {\n ...Object.fromEntries(response.headers.entries()),\n \"content-type\": response.headers.has(\"content-type\")\n ? response.headers.get(\"content-type\")\n : \"application/json\",\n },\n },\n );\n };\n}","label",[141],"62bc5c9d-5420-44f3-86e0-517d7e112680","_api.ts","01a066da-14da-777f-b159-67bd0b2c1ca1",6,["D",1788433026255],2,"import { setTimeout } from \"node:timers/promises\";\n\nexport type ArticleResponse = {\n id: number;\n title: string;\n body: string | null;\n date: Date;\n authors: number[];\n};\n\nconst articles: ArticleResponse[] = [{\n id: 0,\n title: \"A Crash Course in GraphQL\",\n date: new Date(2025, 6, 16),\n body:\n \"So you’ve heard of GraphQL. Maybe you’ve run a few queries on Biz Ops or cp-content-pipeline. But you’ve got that itch at the base of your skull every time you look at GraphQL that says “okay but what’s actually going on here? what’s it doing?”.\",\n authors: [0],\n}];\n\nexport class ArticleModel {\n private data?: ArticleResponse;\n private type?: \"full\" | \"simple\";\n #id: number;\n\n constructor(id: number) {\n this.#id = id;\n }\n\n async getArticle(type: \"full\" | \"simple\") {\n await setTimeout(type === \"full\" ? 1000 : 100);\n if (!articles[this.#id]) throw new Error(`author ${this.id} not found`);\n\n this.data = type === \"full\"\n ? articles[this.#id]\n : { ...articles[this.#id], body: null };\n this.type = type;\n }\n\n withData(\n type: \"full\" | \"simple\",\n getter: (data: ArticleResponse, args?: A) => T,\n ) {\n return async (args: A) => {\n if (!this.data || this.type !== type) {\n await this.getArticle(type);\n }\n\n return getter(this.data, args);\n };\n }\n\n body = this.withData(\"full\", (data) => data.body);\n title = this.withData(\"simple\", (data) => data.title);\n id = this.withData(\"simple\", (data) => data.id);\n date = this.withData(\"simple\", (data) => data.date);\n authors = this.withData(\"simple\", (data) => data.authors);\n}",[152],"7b1859fd-1661-41d3-8a8a-ae99322d63b9",["D",1788433197025],5,[28],"pulls","branches","forks","envVars",{"_170":60,"_172":60},"connections",{"_170":60,"_171":60},"count","unfilledCount","emptyCount",{"_43":159,"_32":28,"_30":31,"_143":-5,"_41":42,"_40":14,"_145":25,"_38":183,"_13":161,"_33":34,"_35":37,"_24":25,"_149":-5,"_177":184,"_27":185},{"_43":151,"_32":152,"_30":153,"_143":-5,"_41":42,"_40":154,"_145":25,"_38":180,"_13":156,"_33":147,"_35":157,"_24":25,"_149":-5,"_177":181,"_27":182},{"_43":140,"_32":141,"_30":142,"_143":-5,"_41":42,"_40":144,"_145":125,"_38":176,"_13":60,"_33":147,"_35":148,"_24":25,"_149":-5,"_177":178,"_27":179},["D",1788431963286],"children",[],[141],["D",1788433026255],[],[152],["D",1788433197025],[],[28],["D",1788431963286],{"_97":96,"_104":100},{"_97":96,"_98":-5,"_99":100,"_18":54,"_101":102,"_103":25},{"_13":83,"_32":84,"_43":42,"_85":44,"_86":87,"_88":89,"_90":50,"_91":92,"_93":62,"_94":45,"_95":96},"ctx",{"_76":-5,"_127":223,"_224":225,"_226":227,"_228":25,"_229":25,"_230":25,"_231":125,"_232":-5,"_233":-7,"_234":-7,"_235":60,"_236":25,"_237":25,"_238":-5,"_239":25,"_240":25,"_241":25,"_242":-5},"ENV",{"_194":195,"_196":197,"_198":84,"_199":200,"_201":202,"_203":204,"_205":206,"_207":208,"_209":210,"_211":212,"_213":214,"_215":216,"_217":218,"_219":220,"_221":222},"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"]

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