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OpenTelemetry","\u002Fcompare\u002Fopentelemetry","8.compare\u002F2.opentelemetry",{"title":601,"path":602,"stem":603,"icon":577},"evlog vs LogTape","\u002Fcompare\u002Flogtape","8.compare\u002F3.logtape",{"title":605,"path":606,"stem":607,"icon":577},"evlog vs Winston: formats and request events","\u002Fcompare\u002Fwinston","8.compare\u002F4.winston",{"title":609,"path":610,"stem":611,"icon":577},"evlog vs Consola: reporters and request context","\u002Fcompare\u002Fconsola","8.compare\u002F5.consola",{"id":613,"title":614,"body":615,"description":1457,"extension":1458,"links":1459,"meta":1460,"navigation":1461,"path":246,"seo":1462,"stem":247,"__hash__":1463},"docs\u002F4.integrate\u002Fframeworks\u002F00.overview.md","Framework Integrations",{"type":616,"value":617,"toc":1444},"minimark",[618,635,649,654,1067,1071,1074,1079,1142,1146,1227,1244,1248,1305,1309,1368,1389,1393,1403,1438],[619,620,621,622,626,627,630,631,634],"p",{},"Choose your framework from the table below. ",[623,624,625],"code",{},"log.set()",", ",[623,628,629],{},"createError()"," and ",[623,632,633],{},"parseError()"," use the same core APIs, while initialization and request-logger access depend on the integration. Some stacks have a module or middleware, others need the manual setup shown in their guide.",[636,637,640,641,645,646,648],"callout",{"color":638,"icon":639},"neutral","i-lucide-globe","No HTTP framework? Use ",[642,643,644],"a",{"href":311},"Standalone TypeScript"," for scripts, libraries, and workers, and ",[642,647,305],{"href":306}," on the edge.",[650,651,653],"h2",{"id":652},"pick-your-framework","Pick your framework",[655,656,657,679],"table",{},[658,659,660],"thead",{},[661,662,663,667,670,673,676],"tr",{},[664,665,666],"th",{},"Framework",[664,668,669],{},"Import",[664,671,672],{},"Type",[664,674,675],{},"Logger Access",[664,677,678],{},"Status",[680,681,682,705,726,750,769,789,807,829,848,870,892,915,938,961,981,1006,1026,1044],"tbody",{},[661,683,684,689,694,697,702],{},[685,686,687],"td",{},[642,688,250],{"href":251},[685,690,691],{},[623,692,693],{},"evlog\u002Fnuxt",[685,695,696],{},"Module",[685,698,699],{},[623,700,701],{},"useLogger(event)",[685,703,704],{},"Stable",[661,706,707,711,716,719,724],{},[685,708,709],{},[642,710,255],{"href":256},[685,712,713],{},[623,714,715],{},"evlog\u002Fnext",[685,717,718],{},"Factory",[685,720,721],{},[623,722,723],{},"useLogger()",[685,725,704],{},[661,727,728,732,737,740,748],{},[685,729,730],{},[642,731,260],{"href":261},[685,733,734],{},[623,735,736],{},"evlog\u002Fsveltekit",[685,738,739],{},"Hooks",[685,741,742,745,746],{},[623,743,744],{},"event.locals.log"," \u002F ",[623,747,723],{},[685,749,704],{},[661,751,752,756,761,763,767],{},[685,753,754],{},[642,755,265],{"href":266},[685,757,758],{},[623,759,760],{},"evlog\u002Fnitro",[685,762,696],{},[685,764,765],{},[623,766,701],{},[685,768,704],{},[661,770,771,775,780,782,787],{},[685,772,773],{},[642,774,270],{"href":271},[685,776,777],{},[623,778,779],{},"evlog\u002Fnitro\u002Fv3",[685,781,696],{},[685,783,784],{},[623,785,786],{},"useRequest().context.log",[685,788,704],{},[661,790,791,796,800,802,805],{},[685,792,793],{},[642,794,795],{"href":271},"TanStack Router",[685,797,798],{},[623,799,779],{},[685,801,696],{},[685,803,804],{},"Via TanStack Start (uses Nitro v3)",[685,806,704],{},[661,808,809,813,818,820,827],{},[685,810,811],{},[642,812,300],{"href":301},[685,814,815],{},[623,816,817],{},"evlog\u002Freact-router",[685,819,384],{},[685,821,822,745,825],{},[623,823,824],{},"context.get(loggerContext)",[623,826,723],{},[685,828,704],{},[661,830,831,835,840,842,846],{},[685,832,833],{},[642,834,275],{"href":276},[685,836,837],{},[623,838,839],{},"evlog\u002Fnestjs",[685,841,696],{},[685,843,844],{},[623,845,723],{},[685,847,704],{},[661,849,850,854,859,861,868],{},[685,851,852],{},[642,853,280],{"href":281},[685,855,856],{},[623,857,858],{},"evlog\u002Fexpress",[685,860,384],{},[685,862,863,745,866],{},[623,864,865],{},"req.log",[623,867,723],{},[685,869,704],{},[661,871,872,876,881,883,890],{},[685,873,874],{},[642,875,285],{"href":286},[685,877,878],{},[623,879,880],{},"evlog\u002Fhono",[685,882,384],{},[685,884,885,745,888],{},[623,886,887],{},"c.get('log')",[623,889,723],{},[685,891,704],{},[661,893,894,898,903,906,913],{},[685,895,896],{},[642,897,290],{"href":291},[685,899,900],{},[623,901,902],{},"evlog\u002Ffastify",[685,904,905],{},"Plugin",[685,907,908,745,911],{},[623,909,910],{},"request.log",[623,912,723],{},[685,914,704],{},[661,916,917,921,926,928,936],{},[685,918,919],{},[642,920,295],{"href":296},[685,922,923],{},[623,924,925],{},"evlog\u002Felysia",[685,927,905],{},[685,929,930,933,934],{},[623,931,932],{},"log"," (context) \u002F ",[623,935,723],{},[685,937,704],{},[661,939,940,944,949,952,959],{},[685,941,942],{},[642,943,319],{"href":320},[685,945,946],{},[623,947,948],{},"evlog\u002Forpc",[685,950,951],{},"Handler wrapper + middleware",[685,953,954,745,957],{},[623,955,956],{},"context.log",[623,958,723],{},[685,960,704],{},[661,962,963,967,972,974,979],{},[685,964,965],{},[642,966,305],{"href":306},[685,968,969],{},[623,970,971],{},"evlog\u002Fworkers",[685,973,718],{},[685,975,976],{},[623,977,978],{},"createWorkersLogger()",[685,980,704],{},[661,982,983,987,992,995,1003],{},[685,984,985],{},[642,986,324],{"href":325},[685,988,989],{},[623,990,991],{},"evlog",[685,993,994],{},"Manual",[685,996,997,745,1000],{},[623,998,999],{},"createLogger()",[623,1001,1002],{},"createRequestLogger()",[685,1004,1005],{},"Guide",[661,1007,1008,1012,1016,1018,1024],{},[685,1009,1010],{},[642,1011,310],{"href":311},[685,1013,1014],{},[623,1015,991],{},[685,1017,994],{},[685,1019,1020,745,1022],{},[623,1021,999],{},[623,1023,1002],{},[685,1025,704],{},[661,1027,1028,1032,1036,1038,1042],{},[685,1029,1030],{},[642,1031,314],{"href":315},[685,1033,1034],{},[623,1035,991],{},[685,1037,994],{},[685,1039,1040],{},[623,1041,1002],{},[685,1043,1005],{},[661,1045,1046,1051,1056,1059,1064],{},[685,1047,1048],{},[642,1049,1050],{"href":505},"Custom",[685,1052,1053],{},[623,1054,1055],{},"evlog\u002Ftoolkit",[685,1057,1058],{},"Build your own",[685,1060,1061],{},[623,1062,1063],{},"createMiddlewareLogger()",[685,1065,1066],{},"Beta",[650,1068,1070],{"id":1069},"what-differs-from-one-framework-to-the-next","What differs from one framework to the next",[619,1072,1073],{},"Two things differ per framework: how you start evlog, and how a handler reaches the request logger.",[1075,1076,1078],"h3",{"id":1077},"start-evlog","Start evlog",[655,1080,1081,1090],{},[658,1082,1083],{},[661,1084,1085,1088],{},[664,1086,1087],{},"Pattern",[664,1089,241],{},[680,1091,1092,1103,1113,1122,1130],{},[661,1093,1094,1100],{},[685,1095,1096,1099],{},[623,1097,1098],{},"evlog(options)"," middleware \u002F plugin",[685,1101,1102],{},"Hono, Express, Fastify, Elysia, SvelteKit, React Router",[661,1104,1105,1111],{},[685,1106,1107,1110],{},[623,1108,1109],{},"createEvlog(options)"," factory",[685,1112,255],{},[661,1114,1115,1120],{},[685,1116,1117],{},[623,1118,1119],{},"EvlogModule.forRoot()",[685,1121,275],{},[661,1123,1124,1127],{},[685,1125,1126],{},"Module default export",[685,1128,1129],{},"Nuxt, Nitro v2\u002Fv3",[661,1131,1132,1135],{},[685,1133,1134],{},"Manual factory",[685,1136,1137,1138,1141],{},"Cloudflare Workers (",[623,1139,1140],{},"createWorkersLogger","), Standalone, AWS Lambda, Astro",[1075,1143,1145],{"id":1144},"reach-the-logger-from-a-handler","Reach the logger from a handler",[655,1147,1148,1156],{},[658,1149,1150],{},[661,1151,1152,1154],{},[664,1153,1087],{},[664,1155,241],{},[680,1157,1158,1167,1176,1184,1192,1200,1208,1216],{},[661,1159,1160,1164],{},[685,1161,1162],{},[623,1163,701],{},[685,1165,1166],{},"Nuxt, Nitro",[661,1168,1169,1173],{},[685,1170,1171],{},[623,1172,723],{},[685,1174,1175],{},"Next.js, NestJS, Express, Fastify, Elysia, SvelteKit, React Router, Hono",[661,1177,1178,1182],{},[685,1179,1180],{},[623,1181,887],{},[685,1183,285],{},[661,1185,1186,1190],{},[685,1187,1188],{},[623,1189,865],{},[685,1191,280],{},[661,1193,1194,1198],{},[685,1195,1196],{},[623,1197,910],{},[685,1199,290],{},[661,1201,1202,1206],{},[685,1203,1204],{},[623,1205,744],{},[685,1207,260],{},[661,1209,1210,1214],{},[685,1211,1212],{},[623,1213,824],{},[685,1215,300],{},[661,1217,1218,1224],{},[685,1219,1220,745,1222],{},[623,1221,1002],{},[623,1223,999],{},[685,1225,1226],{},"Standalone, Workers, manual setups",[636,1228,1230,1231,1233,1234,1236,1237,1239,1240,1243],{"color":1229,"icon":13},"info","On Hono, use ",[623,1232,887],{}," inside handlers and ",[623,1235,723],{}," from ",[623,1238,880],{}," in the layers underneath. See ",[642,1241,1242],{"href":286},"Hono integration",".",[650,1245,1247],{"id":1246},"full-stack-frameworks","Full-stack frameworks",[1249,1250,1251,1268,1278,1283,1286,1292,1300],"card-group",{},[1252,1253,1254,1255,1257,1258,626,1261,1264,1265,1243],"card",{"color":638,"icon":253,"title":250,"to":251},"Register ",[623,1256,693],{}," in your modules to get auto-imported ",[623,1259,1260],{},"useLogger",[623,1262,1263],{},"createError",", and ",[623,1266,1267],{},"parseError",[1252,1269,1270,1273,1274,1277],{"color":638,"icon":258,"title":255,"to":256},[623,1271,1272],{},"createEvlog()"," factory with ",[623,1275,1276],{},"withEvlog()"," handler wrapper and client provider.",[1252,1279,1280,1281,1243],{"color":638,"icon":263,"title":260,"to":261},"Handle and handleError hooks with request-scoped logger on ",[623,1282,744],{},[1252,1284,1285],{"color":638,"icon":268,"title":265,"to":266},"Module for both Nitro v2 and v3 with plugin-based drain and enrichment hooks.",[1252,1287,1288,1289,1291],{"color":638,"icon":273,"title":270,"to":271},"Uses Nitro v3 module with async context, so ",[623,1290,723],{}," works inside server functions. Also covers TanStack Router (full-stack mode).",[1252,1293,1294,1295,630,1297,1299],{"color":638,"icon":303,"title":300,"to":301},"Middleware with ",[623,1296,824],{},[623,1298,723],{}," for loaders and services.",[1252,1301,1302,1304],{"color":638,"icon":278,"title":275,"to":276},[623,1303,1119],{}," with global middleware, exception filter, and async config.",[650,1306,1308],{"id":1307},"server-frameworks","Server frameworks",[1249,1310,1311,1316,1325,1331,1339,1348,1351,1361,1364],{},[1252,1312,1294,1313,1315],{"color":638,"icon":283,"title":280,"to":281},[623,1314,865],{}," and 4-argument error handler.",[1252,1317,1318,1319,1321,1322,1243],{"color":638,"icon":288,"title":285,"to":286},"Middleware with typed ",[623,1320,887],{}," via ",[623,1323,1324],{},"EvlogVariables",[1252,1326,1327,1328,1330],{"color":638,"icon":293,"title":290,"to":291},"Plugin with ",[623,1329,910],{}," that shadows Fastify's built-in pino logger.",[1252,1332,1327,1333,1335,1336,1243],{"color":638,"icon":298,"title":295,"to":296},[623,1334,932],{}," in route context via Elysia's ",[623,1337,1338],{},"derive",[1252,1340,1341,1342,1344,1345,1243],{"color":638,"icon":322,"title":319,"to":320},"Handler wrapper + procedure middleware exposing ",[623,1343,956],{}," and per-procedure ",[623,1346,1347],{},"operation",[1252,1349,1350],{"color":638,"icon":308,"title":305,"to":306},"Factory for creating request-scoped loggers with Cloudflare-specific context.",[1252,1352,1353,1356,1357,1360],{"color":638,"icon":327,"title":324,"to":325},[623,1354,1355],{},"initLogger"," once per runtime; ",[623,1358,1359],{},"createLogger"," per invocation (SQS, events, HTTP API).",[1252,1362,1363],{"color":638,"icon":79,"title":310,"to":311},"For scripts, CLI tools, queues, and any TypeScript process.",[1252,1365,1367],{"color":638,"icon":507,"title":1366,"to":505},"Custom Integration","Build your own middleware with the evlog toolkit API.",[636,1369,1370,1371,626,1374,626,1377,626,1380,626,1383,1264,1386,1243],{"color":1229,"icon":13},"All frameworks support the same features: ",[642,1372,1373],{"href":52},"wide events",[642,1375,1376],{"href":57},"structured errors",[642,1378,1379],{"href":163},"drain adapters",[642,1381,1382],{"href":451},"enrichers",[642,1384,1385],{"href":67},"sampling",[642,1387,1388],{"href":348},"AI SDK integration",[650,1390,1392],{"id":1391},"strip-client-logs-at-build-time","Strip client logs at build time",[619,1394,1395,1396,1402],{},"For any Vite-based project, the ",[642,1397,1398,1401],{"href":566},[623,1399,1400],{},"evlog\u002Fvite"," plugin"," adds build-time optimizations:",[1404,1405,1406,1418,1428],"ul",{},[1407,1408,1409,1413,1414,1417],"li",{},[1410,1411,1412],"strong",{},"Auto-initialization",": no ",[623,1415,1416],{},"initLogger()"," call needed",[1407,1419,1420,1423,1424,1427],{},[1410,1421,1422],{},"Debug stripping",": ",[623,1425,1426],{},"log.debug()"," removed from production builds",[1407,1429,1430,1433,1434,1437],{},[1410,1431,1432],{},"Source location",": inject ",[623,1435,1436],{},"__source: 'file:line'"," into log calls",[619,1439,1440,1441,1443],{},"It works with SvelteKit, Hono through vite-node, and any Vite-powered setup. Under Nuxt the same three options live on the ",[623,1442,693],{}," module, so the plugin does not need to be added by hand.",{"title":1445,"searchDepth":1446,"depth":1446,"links":1447},"",2,[1448,1449,1454,1455,1456],{"id":652,"depth":1446,"text":653},{"id":1069,"depth":1446,"text":1070,"children":1450},[1451,1453],{"id":1077,"depth":1452,"text":1078},3,{"id":1144,"depth":1452,"text":1145},{"id":1246,"depth":1446,"text":1247},{"id":1307,"depth":1446,"text":1308},{"id":1391,"depth":1446,"text":1392},"Choose an evlog integration for Nuxt, Next.js, SvelteKit, Hono, Express, or another listed framework. Follow its setup and request-logger access guide.","md",null,{},{"title":41,"icon":248},{"title":614,"description":1457},"u9gEqE6gIuTwJqCo_teiuJIFPe5cGGK1QLqVgZYaJ-A",[1465,1467],{"title":236,"path":237,"stem":238,"description":1466,"icon":239,"children":-1},"Store wide events in an in-memory ring buffer. Works in any runtime — including Cloudflare Workers (workerd) — where the file system is unavailable.",{"title":250,"path":251,"stem":252,"description":1468,"icon":253,"children":-1},"Add the Nuxt module and every server route emits one wide event. `useLogger(event)` and `parseError` are auto-imported, `createError` comes from `evlog`.",1791636469751]