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",[613,614,615],"code",{},"log.set()",", ",[613,618,619],{},"createError()"," and ",[613,622,623],{},"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.",[626,627,630,631,635,636,638],"callout",{"color":628,"icon":629},"neutral","i-lucide-globe","No HTTP framework? Use ",[632,633,634],"a",{"href":301},"Standalone TypeScript"," for scripts, libraries, and workers, and ",[632,637,295],{"href":296}," on the edge.",[640,641,643],"h2",{"id":642},"pick-your-framework","Pick your framework",[645,646,647,669],"table",{},[648,649,650],"thead",{},[651,652,653,657,660,663,666],"tr",{},[654,655,656],"th",{},"Framework",[654,658,659],{},"Import",[654,661,662],{},"Type",[654,664,665],{},"Logger Access",[654,667,668],{},"Status",[670,671,672,695,716,740,759,779,797,819,838,860,882,905,928,951,971,996,1016,1034],"tbody",{},[651,673,674,679,684,687,692],{},[675,676,677],"td",{},[632,678,240],{"href":241},[675,680,681],{},[613,682,683],{},"evlog\u002Fnuxt",[675,685,686],{},"Module",[675,688,689],{},[613,690,691],{},"useLogger(event)",[675,693,694],{},"Stable",[651,696,697,701,706,709,714],{},[675,698,699],{},[632,700,245],{"href":246},[675,702,703],{},[613,704,705],{},"evlog\u002Fnext",[675,707,708],{},"Factory",[675,710,711],{},[613,712,713],{},"useLogger()",[675,715,694],{},[651,717,718,722,727,730,738],{},[675,719,720],{},[632,721,250],{"href":251},[675,723,724],{},[613,725,726],{},"evlog\u002Fsveltekit",[675,728,729],{},"Hooks",[675,731,732,735,736],{},[613,733,734],{},"event.locals.log"," \u002F ",[613,737,713],{},[675,739,694],{},[651,741,742,746,751,753,757],{},[675,743,744],{},[632,745,255],{"href":256},[675,747,748],{},[613,749,750],{},"evlog\u002Fnitro",[675,752,686],{},[675,754,755],{},[613,756,691],{},[675,758,694],{},[651,760,761,765,770,772,777],{},[675,762,763],{},[632,764,260],{"href":261},[675,766,767],{},[613,768,769],{},"evlog\u002Fnitro\u002Fv3",[675,771,686],{},[675,773,774],{},[613,775,776],{},"useRequest().context.log",[675,778,694],{},[651,780,781,786,790,792,795],{},[675,782,783],{},[632,784,785],{"href":261},"TanStack Router",[675,787,788],{},[613,789,769],{},[675,791,686],{},[675,793,794],{},"Via TanStack Start (uses Nitro v3)",[675,796,694],{},[651,798,799,803,808,810,817],{},[675,800,801],{},[632,802,290],{"href":291},[675,804,805],{},[613,806,807],{},"evlog\u002Freact-router",[675,809,374],{},[675,811,812,735,815],{},[613,813,814],{},"context.get(loggerContext)",[613,816,713],{},[675,818,694],{},[651,820,821,825,830,832,836],{},[675,822,823],{},[632,824,265],{"href":266},[675,826,827],{},[613,828,829],{},"evlog\u002Fnestjs",[675,831,686],{},[675,833,834],{},[613,835,713],{},[675,837,694],{},[651,839,840,844,849,851,858],{},[675,841,842],{},[632,843,270],{"href":271},[675,845,846],{},[613,847,848],{},"evlog\u002Fexpress",[675,850,374],{},[675,852,853,735,856],{},[613,854,855],{},"req.log",[613,857,713],{},[675,859,694],{},[651,861,862,866,871,873,880],{},[675,863,864],{},[632,865,275],{"href":276},[675,867,868],{},[613,869,870],{},"evlog\u002Fhono",[675,872,374],{},[675,874,875,735,878],{},[613,876,877],{},"c.get('log')",[613,879,713],{},[675,881,694],{},[651,883,884,888,893,896,903],{},[675,885,886],{},[632,887,280],{"href":281},[675,889,890],{},[613,891,892],{},"evlog\u002Ffastify",[675,894,895],{},"Plugin",[675,897,898,735,901],{},[613,899,900],{},"request.log",[613,902,713],{},[675,904,694],{},[651,906,907,911,916,918,926],{},[675,908,909],{},[632,910,285],{"href":286},[675,912,913],{},[613,914,915],{},"evlog\u002Felysia",[675,917,895],{},[675,919,920,923,924],{},[613,921,922],{},"log"," (context) \u002F ",[613,925,713],{},[675,927,694],{},[651,929,930,934,939,942,949],{},[675,931,932],{},[632,933,309],{"href":310},[675,935,936],{},[613,937,938],{},"evlog\u002Forpc",[675,940,941],{},"Handler wrapper + middleware",[675,943,944,735,947],{},[613,945,946],{},"context.log",[613,948,713],{},[675,950,694],{},[651,952,953,957,962,964,969],{},[675,954,955],{},[632,956,295],{"href":296},[675,958,959],{},[613,960,961],{},"evlog\u002Fworkers",[675,963,708],{},[675,965,966],{},[613,967,968],{},"createWorkersLogger()",[675,970,694],{},[651,972,973,977,982,985,993],{},[675,974,975],{},[632,976,314],{"href":315},[675,978,979],{},[613,980,981],{},"evlog",[675,983,984],{},"Manual",[675,986,987,735,990],{},[613,988,989],{},"createLogger()",[613,991,992],{},"createRequestLogger()",[675,994,995],{},"Guide",[651,997,998,1002,1006,1008,1014],{},[675,999,1000],{},[632,1001,300],{"href":301},[675,1003,1004],{},[613,1005,981],{},[675,1007,984],{},[675,1009,1010,735,1012],{},[613,1011,989],{},[613,1013,992],{},[675,1015,694],{},[651,1017,1018,1022,1026,1028,1032],{},[675,1019,1020],{},[632,1021,304],{"href":305},[675,1023,1024],{},[613,1025,981],{},[675,1027,984],{},[675,1029,1030],{},[613,1031,992],{},[675,1033,995],{},[651,1035,1036,1041,1046,1049,1054],{},[675,1037,1038],{},[632,1039,1040],{"href":495},"Custom",[675,1042,1043],{},[613,1044,1045],{},"evlog\u002Ftoolkit",[675,1047,1048],{},"Build your own",[675,1050,1051],{},[613,1052,1053],{},"createMiddlewareLogger()",[675,1055,1056],{},"Beta",[640,1058,1060],{"id":1059},"what-differs-from-one-framework-to-the-next","What differs from one framework to the next",[609,1062,1063],{},"Two things differ per framework: how you start evlog, and how a handler reaches the request logger.",[1065,1066,1068],"h3",{"id":1067},"start-evlog","Start evlog",[645,1070,1071,1080],{},[648,1072,1073],{},[651,1074,1075,1078],{},[654,1076,1077],{},"Pattern",[654,1079,231],{},[670,1081,1082,1093,1103,1112,1120],{},[651,1083,1084,1090],{},[675,1085,1086,1089],{},[613,1087,1088],{},"evlog(options)"," middleware \u002F plugin",[675,1091,1092],{},"Hono, Express, Fastify, Elysia, SvelteKit, React Router",[651,1094,1095,1101],{},[675,1096,1097,1100],{},[613,1098,1099],{},"createEvlog(options)"," factory",[675,1102,245],{},[651,1104,1105,1110],{},[675,1106,1107],{},[613,1108,1109],{},"EvlogModule.forRoot()",[675,1111,265],{},[651,1113,1114,1117],{},[675,1115,1116],{},"Module default export",[675,1118,1119],{},"Nuxt, Nitro v2\u002Fv3",[651,1121,1122,1125],{},[675,1123,1124],{},"Manual factory",[675,1126,1127,1128,1131],{},"Cloudflare Workers (",[613,1129,1130],{},"createWorkersLogger","), Standalone, AWS Lambda, Astro",[1065,1133,1135],{"id":1134},"reach-the-logger-from-a-handler","Reach the logger from a handler",[645,1137,1138,1146],{},[648,1139,1140],{},[651,1141,1142,1144],{},[654,1143,1077],{},[654,1145,231],{},[670,1147,1148,1157,1166,1174,1182,1190,1198,1206],{},[651,1149,1150,1154],{},[675,1151,1152],{},[613,1153,691],{},[675,1155,1156],{},"Nuxt, Nitro",[651,1158,1159,1163],{},[675,1160,1161],{},[613,1162,713],{},[675,1164,1165],{},"Next.js, NestJS, Express, Fastify, Elysia, SvelteKit, React Router, Hono",[651,1167,1168,1172],{},[675,1169,1170],{},[613,1171,877],{},[675,1173,275],{},[651,1175,1176,1180],{},[675,1177,1178],{},[613,1179,855],{},[675,1181,270],{},[651,1183,1184,1188],{},[675,1185,1186],{},[613,1187,900],{},[675,1189,280],{},[651,1191,1192,1196],{},[675,1193,1194],{},[613,1195,734],{},[675,1197,250],{},[651,1199,1200,1204],{},[675,1201,1202],{},[613,1203,814],{},[675,1205,290],{},[651,1207,1208,1214],{},[675,1209,1210,735,1212],{},[613,1211,992],{},[613,1213,989],{},[675,1215,1216],{},"Standalone, Workers, manual setups",[626,1218,1220,1221,1223,1224,1226,1227,1229,1230,1233],{"color":1219,"icon":13},"info","On Hono, use ",[613,1222,877],{}," inside handlers and ",[613,1225,713],{}," from ",[613,1228,870],{}," in the layers underneath. See ",[632,1231,1232],{"href":276},"Hono integration",".",[640,1235,1237],{"id":1236},"full-stack-frameworks","Full-stack frameworks",[1239,1240,1241,1258,1268,1273,1276,1282,1290],"card-group",{},[1242,1243,1244,1245,1247,1248,616,1251,1254,1255,1233],"card",{"color":628,"icon":243,"title":240,"to":241},"Register ",[613,1246,683],{}," in your modules to get auto-imported ",[613,1249,1250],{},"useLogger",[613,1252,1253],{},"createError",", and ",[613,1256,1257],{},"parseError",[1242,1259,1260,1263,1264,1267],{"color":628,"icon":248,"title":245,"to":246},[613,1261,1262],{},"createEvlog()"," factory with ",[613,1265,1266],{},"withEvlog()"," handler wrapper and client provider.",[1242,1269,1270,1271,1233],{"color":628,"icon":253,"title":250,"to":251},"Handle and handleError hooks with request-scoped logger on ",[613,1272,734],{},[1242,1274,1275],{"color":628,"icon":258,"title":255,"to":256},"Module for both Nitro v2 and v3 with plugin-based drain and enrichment hooks.",[1242,1277,1278,1279,1281],{"color":628,"icon":263,"title":260,"to":261},"Uses Nitro v3 module with async context, so ",[613,1280,713],{}," works inside server functions. Also covers TanStack Router (full-stack mode).",[1242,1283,1284,1285,620,1287,1289],{"color":628,"icon":293,"title":290,"to":291},"Middleware with ",[613,1286,814],{},[613,1288,713],{}," for loaders and services.",[1242,1291,1292,1294],{"color":628,"icon":268,"title":265,"to":266},[613,1293,1109],{}," with global middleware, exception filter, and async config.",[640,1296,1298],{"id":1297},"server-frameworks","Server frameworks",[1239,1300,1301,1306,1315,1321,1329,1338,1341,1351,1354],{},[1242,1302,1284,1303,1305],{"color":628,"icon":273,"title":270,"to":271},[613,1304,855],{}," and 4-argument error handler.",[1242,1307,1308,1309,1311,1312,1233],{"color":628,"icon":278,"title":275,"to":276},"Middleware with typed ",[613,1310,877],{}," via ",[613,1313,1314],{},"EvlogVariables",[1242,1316,1317,1318,1320],{"color":628,"icon":283,"title":280,"to":281},"Plugin with ",[613,1319,900],{}," that shadows Fastify's built-in pino logger.",[1242,1322,1317,1323,1325,1326,1233],{"color":628,"icon":288,"title":285,"to":286},[613,1324,922],{}," in route context via Elysia's ",[613,1327,1328],{},"derive",[1242,1330,1331,1332,1334,1335,1233],{"color":628,"icon":312,"title":309,"to":310},"Handler wrapper + procedure middleware exposing ",[613,1333,946],{}," and per-procedure ",[613,1336,1337],{},"operation",[1242,1339,1340],{"color":628,"icon":298,"title":295,"to":296},"Factory for creating request-scoped loggers with Cloudflare-specific context.",[1242,1342,1343,1346,1347,1350],{"color":628,"icon":317,"title":314,"to":315},[613,1344,1345],{},"initLogger"," once per runtime; ",[613,1348,1349],{},"createLogger"," per invocation (SQS, events, HTTP API).",[1242,1352,1353],{"color":628,"icon":79,"title":300,"to":301},"For scripts, CLI tools, queues, and any TypeScript process.",[1242,1355,1357],{"color":628,"icon":497,"title":1356,"to":495},"Custom Integration","Build your own middleware with the evlog toolkit API.",[626,1359,1360,1361,616,1364,616,1367,616,1370,616,1373,1254,1376,1233],{"color":1219,"icon":13},"All frameworks support the same features: ",[632,1362,1363],{"href":52},"wide events",[632,1365,1366],{"href":57},"structured errors",[632,1368,1369],{"href":153},"drain adapters",[632,1371,1372],{"href":441},"enrichers",[632,1374,1375],{"href":67},"sampling",[632,1377,1378],{"href":338},"AI SDK integration",[640,1380,1382],{"id":1381},"strip-client-logs-at-build-time","Strip client logs at build time",[609,1384,1385,1386,1392],{},"For any Vite-based project, the ",[632,1387,1388,1391],{"href":556},[613,1389,1390],{},"evlog\u002Fvite"," plugin"," adds build-time optimizations:",[1394,1395,1396,1408,1418],"ul",{},[1397,1398,1399,1403,1404,1407],"li",{},[1400,1401,1402],"strong",{},"Auto-initialization",": no ",[613,1405,1406],{},"initLogger()"," call needed",[1397,1409,1410,1413,1414,1417],{},[1400,1411,1412],{},"Debug stripping",": ",[613,1415,1416],{},"log.debug()"," removed from production builds",[1397,1419,1420,1423,1424,1427],{},[1400,1421,1422],{},"Source location",": inject ",[613,1425,1426],{},"__source: 'file:line'"," into log calls",[609,1429,1430,1431,1433],{},"It works with SvelteKit, Hono through vite-node, and any Vite-powered setup. Under Nuxt the same three options live on the ",[613,1432,683],{}," module, so the plugin does not need to be added by hand.",{"title":1435,"searchDepth":1436,"depth":1436,"links":1437},"",2,[1438,1439,1444,1445,1446],{"id":642,"depth":1436,"text":643},{"id":1059,"depth":1436,"text":1060,"children":1440},[1441,1443],{"id":1067,"depth":1442,"text":1068},3,{"id":1134,"depth":1442,"text":1135},{"id":1236,"depth":1436,"text":1237},{"id":1297,"depth":1436,"text":1298},{"id":1381,"depth":1436,"text":1382},"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":238},{"title":604,"description":1447},"u9gEqE6gIuTwJqCo_teiuJIFPe5cGGK1QLqVgZYaJ-A",[1455,1457],{"title":226,"path":227,"stem":228,"description":1456,"icon":229,"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":240,"path":241,"stem":242,"description":1458,"icon":243,"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`.",1791070319224]