[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_184":185,"_186":187},"routes/_app.x.$handle.$name",{"_11":12,"_13":14,"_15":16,"_18":19,"_17":-7,"_138":-5,"_20":139,"_22":140,"_141":142,"_143":144,"_25":145,"_24":-5,"_146":147,"_148":149,"_150":50,"_151":152,"_153":50,"_154":-5,"_155":-5,"_156":157},"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":28,"_29":-5,"_30":31,"_32":33,"_34":-5},"handle","stevekrouse","name","exponentialBackoffMiddleware","branchName","main","version","path","","project",{"_35":95,"_13":14,"_37":96,"_48":-5,"_97":69,"_51":52,"_98":52,"_99":-5,"_100":-5,"_101":102,"_103":-5,"_104":69,"_105":-5,"_106":-5,"_107":108,"_54":55,"_109":-5,"_110":-5,"_111":-5,"_112":-5,"_113":114,"_115":114,"_116":117,"_118":117,"_119":117,"_120":114,"_121":114,"_122":123,"_124":125,"_126":127,"_49":50},"tree",[86,87],"file","contents",[58,59],"upstream",{"_35":36,"_37":38,"_39":40,"_13":16,"_41":42,"_17":33,"_43":44,"_45":46,"_47":-5,"_48":-5,"_49":50,"_51":52,"_53":12,"_54":55,"_56":57},"pull","ahead",21,"behind",14,"envVars","id","a5399ba6-2540-11f0-a4ea-569c3dd06744","createdAt",["D",1745962002859],"updatedAt",["D",1717531391130],"projectId","a5394fb6-2540-11f0-a4ea-569c3dd06744","forkedBranchId","f874117e-25f0-11f0-ad23-569c3dd06744","forkedBranchVersion",0,"lockfileKey","deletedAt","isOwned",false,"privacy","public","userHandle","orgId","e81e7335-6d4c-4764-a902-d0962bbfa9f7","projectName","reloadOnSave",{"_35":79,"_13":80,"_62":81,"_64":-5,"_65":66,"_67":82,"_68":69,"_37":83,"_17":46,"_72":24,"_74":84,"_76":50,"_77":-5,"_18":85},{"_35":60,"_13":61,"_62":63,"_64":-5,"_65":66,"_67":31,"_68":69,"_37":70,"_17":71,"_72":73,"_74":75,"_76":50,"_77":-5,"_18":78},"1cc42078-25f1-11f0-ad23-569c3dd06744","main.tsx","fileId","1c74596c-25f1-11f0-ad23-569c3dd06744","parentId","branchId","1c72ba62-25f1-11f0-ad23-569c3dd06744","branchVersion","latest",true,["D",1725105078050],20,"fileType","script","content","/** @jsxImportSource npm:preact */\nimport { render } from \"npm:preact-render-to-string\";\n\n/**\n * Exponential backoff middleware\n * If your server returns a 5xx error,\n * it will wait 1, 2, 4, 8, 16, 32, 64, 128 seconds before retrying\n * @param http handler\n */\nexport function exponentialBackoffMiddleware(\n handler: (req: Request) => Response | Promise,\n): (req: Request) => Promise {\n return async (req: Request): Promise => {\n const res = await handler(req);\n if (res.status < 500) {\n return res;\n } else {\n const cookies = parseCookies(req.headers.get(\"Cookie\") || \"\");\n const retryAfter = Number(cookies.retryAfter) || 1;\n const nextRetryAfter = Math.min(retryAfter * 2, 128);\n\n const htmlResponse = render(\n \n \n \n {res.status} Error\n \n \n

{res.status} Error

{res.statusText}

Will retry in {retryAfter} seconds

\n \n ,\n );\n\n const newResponse = new Response(htmlResponse, {\n status: res.status,\n statusText: res.statusText,\n });\n\n newResponse.headers.set(\n \"Set-Cookie\",\n `retryAfter=${nextRetryAfter}; Path=/; HttpOnly; SameSite=Strict`,\n );\n newResponse.headers.set(\"Content-Type\", \"text/html\");\n\n return newResponse;\n }\n };\n}\n\n// Helper function to parse cookies\nfunction parseCookies(cookieString: string): Record {\n return cookieString.split(\";\").reduce((cookies, cookie) => {\n const [name, value] = cookie.trim().split(\"=\");\n cookies[name] = value;\n return cookies;\n }, {} as Record);\n}","deleted","label",[61],"1c745e08-25f1-11f0-ad23-569c3dd06744","README.md","1c745e80-25f1-11f0-ad23-569c3dd06744",1,["D",1714167309559],"# Exponential backoff middleware\n\nIf your server returns a 5xx error, it will wait 1, 2, 4, 8, 16, 32, 64, 128... seconds before retrying\n\n![Screenshot 2024-04-26 at 18.07.40.gif](https://imagedelivery.net/iHX6Ovru0O7AjmyT5yZRoA/aa375f63-225a-4199-0655-8df720a9c700/public)\n\n## Usage\n\n```ts\nimport { exponentialBackoffMiddleware } from \"https://esm.town/v/stevekrouse/exponentialBackoffMiddleware\"\n\nexport default exponentialBackoffMiddleware(() => { /* your normal http handler * / })\n```\n\nExample usage: https://www.val.town/v/stevekrouse/BIGweather?v=164#L114\n\nMigrated from folder: Archive/exponentialBackoffMiddleware",[80],{"_35":79,"_13":80,"_62":81,"_64":-5,"_65":66,"_67":82,"_68":69,"_37":92,"_17":46,"_72":24,"_74":84,"_76":50,"_77":-5,"_89":93,"_18":94},{"_35":60,"_13":61,"_62":63,"_64":-5,"_65":66,"_67":31,"_68":69,"_37":88,"_17":71,"_72":73,"_74":75,"_76":50,"_77":-5,"_89":90,"_18":91},["D",1725105078050],"children",[],[61],["D",1714167309559],[],[80],"1c72890c-25f1-11f0-ad23-569c3dd06744",["D",1746037794308],"legacyEnvVars","httpPrivacy","description","imageUrl","userId","a0bf3b31-15a5-4d5c-880e-4b1e22c9bc18","pinnedFileId","pinPreview","pinMigrated","screenshotVersion","likeCount",2,"tursoName","tursoHostname","tursoMeasuredAt","pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_11":12,"_137":133},"org",{"_11":12,"_131":-5,"_132":133,"_101":102,"_134":135,"_136":50},"branch",{"_17":31,"_13":16,"_35":66,"_41":95,"_43":36,"_45":46,"_128":52,"_129":42,"_130":55,"_56":14,"_53":12},"forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","displayName","avatar","https://images.clerk.dev/uploaded/img_2PqHa2Gsy93xQrjh2w78Xu0cChW.jpeg","tier","pro","canRestrictVals","profileImageUrl","adoptOrgId",{"_35":95,"_13":14,"_37":180,"_48":-5,"_97":69,"_51":52,"_98":52,"_99":-5,"_100":-5,"_101":102,"_103":-5,"_104":69,"_105":-5,"_106":-5,"_107":108,"_54":55,"_109":-5,"_110":-5,"_111":-5,"_112":-5,"_113":114,"_115":114,"_116":117,"_118":117,"_119":117,"_120":114,"_121":114,"_122":181,"_124":182,"_126":183,"_49":50},[174,175],"files",[174,175],"counts",{"_165":46,"_166":82,"_167":46,"_34":168,"_169":170},[161,162],"upstreamProject",{"_35":42,"_13":57,"_99":-5,"_100":-5,"_51":52,"_122":160},"upstreamBranch",{"_35":36,"_37":158,"_39":159,"_13":16,"_41":42,"_17":33,"_43":44,"_45":46,"_47":-5,"_48":-5,"_49":50,"_51":52,"_53":12,"_54":55,"_56":57},"emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},["D",1745962002859],["D",1717531391130],{"_11":12,"_137":133},{"_35":79,"_13":80,"_62":81,"_64":-5,"_65":66,"_67":82,"_68":69,"_37":83,"_17":46,"_72":24,"_74":84,"_76":50,"_77":-5,"_18":164},{"_35":60,"_13":61,"_62":63,"_64":-5,"_65":66,"_67":31,"_68":69,"_37":70,"_17":71,"_72":73,"_74":75,"_76":50,"_77":-5,"_18":163},[61],[80],"pulls","branches","forks",{"_171":46,"_173":46},"connections",{"_171":46,"_172":46},"count","unfilledCount","emptyCount",{"_35":79,"_13":80,"_62":81,"_64":-5,"_65":66,"_67":82,"_68":69,"_37":92,"_17":46,"_72":24,"_74":84,"_76":50,"_77":-5,"_89":178,"_18":179},{"_35":60,"_13":61,"_62":63,"_64":-5,"_65":66,"_67":31,"_68":69,"_37":88,"_17":71,"_72":73,"_74":75,"_76":50,"_77":-5,"_89":176,"_18":177},[],[61],[],[80],["D",1746037794308],{"_11":12,"_137":133},{"_11":12,"_131":-5,"_132":133,"_101":102,"_134":135,"_136":50},{"_17":31,"_13":16,"_35":66,"_41":95,"_43":36,"_45":46,"_128":52,"_129":42,"_130":55,"_56":14,"_53":12},"ctx",{"_122":-5,"_155":217,"_218":219,"_220":221,"_222":50,"_223":50,"_224":50,"_225":69,"_226":-5,"_227":-7,"_228":-7,"_229":46,"_230":50,"_231":50,"_232":-5,"_233":50,"_234":50,"_235":50,"_236":-5},"ENV",{"_188":189,"_190":191,"_192":16,"_193":194,"_195":196,"_197":198,"_199":200,"_201":202,"_203":204,"_205":206,"_207":208,"_209":210,"_211":212,"_213":214,"_215":216},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","811aa22498c9b0b5a47e8d778de579cdb990f332","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"]

Code