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",[591,592,593],"code",{},"evlog\u002Fexpress"," middleware auto-creates a request-scoped logger on ",[591,596,597],{},"req.log"," and emits a wide event when the response finishes.",[600,601,604,607,632],"prompt",{":actions":602,"description":603,"icon":273},"[\"copy\",\"cursor\",\"claude\"]","Set up evlog in my Express app",[587,605,606],{},"Set up evlog in my Express app.",[608,609,610,614,617,620,623,626,629],"ul",{},[611,612,613],"li",{},"Install evlog: pnpm add evlog",[611,615,616],{},"Call initLogger({ env: { service: 'my-api' } }) at startup",[611,618,619],{},"Alternatively, use evlog\u002Fvite plugin in vite.config.ts for auto-init (replaces initLogger)",[611,621,622],{},"Import evlog middleware from 'evlog\u002Fexpress' and add app.use(evlog())",[611,624,625],{},"Access the logger via req.log in routes or useLogger() anywhere in the call stack",[611,627,628],{},"Use log.set() to accumulate context, throw createError() for structured errors",[611,630,631],{},"Optionally pass drain, enrich, include, and keep options to evlog()",[587,633,634,635,641,642],{},"Docs: ",[636,637,638],"a",{"href":638,"rel":639},"https:\u002F\u002Fwww.evlog.dev\u002Fintegrate\u002Fframeworks\u002Fexpress",[640],"nofollow","\nAdapters: ",[636,643,644],{"href":644,"rel":645},"https:\u002F\u002Fwww.evlog.dev\u002Fintegrate\u002Fadapters\u002Foverview",[640],[647,648,25],"h2",{"id":649},"quick-start",[651,652,654],"h3",{"id":653},"_1-install","1. Install",[656,657,658,686,702,718],"code-group",{},[659,660,666],"pre",{"className":661,"code":662,"filename":663,"language":664,"meta":665,"style":665},"language-bash shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","pnpm add evlog express\n","pnpm","bash","",[591,667,668],{"__ignoreMap":665},[669,670,673,676,680,683],"span",{"class":671,"line":672},"line",1,[669,674,663],{"class":675},"sBMFI",[669,677,679],{"class":678},"sfazB"," add",[669,681,682],{"class":678}," evlog",[669,684,685],{"class":678}," express\n",[659,687,690],{"className":661,"code":688,"filename":689,"language":664,"meta":665,"style":665},"bun add evlog express\n","bun",[591,691,692],{"__ignoreMap":665},[669,693,694,696,698,700],{"class":671,"line":672},[669,695,689],{"class":675},[669,697,679],{"class":678},[669,699,682],{"class":678},[669,701,685],{"class":678},[659,703,706],{"className":661,"code":704,"filename":705,"language":664,"meta":665,"style":665},"yarn add evlog express\n","yarn",[591,707,708],{"__ignoreMap":665},[669,709,710,712,714,716],{"class":671,"line":672},[669,711,705],{"class":675},[669,713,679],{"class":678},[669,715,682],{"class":678},[669,717,685],{"class":678},[659,719,722],{"className":661,"code":720,"filename":721,"language":664,"meta":665,"style":665},"npm install evlog express\n","npm",[591,723,724],{"__ignoreMap":665},[669,725,726,728,731,733],{"class":671,"line":672},[669,727,721],{"class":675},[669,729,730],{"class":678}," install",[669,732,682],{"class":678},[669,734,685],{"class":678},[651,736,738],{"id":737},"_2-initialize-and-register-the-middleware","2. Initialize and register the middleware",[659,740,745],{"className":741,"code":742,"filename":743,"language":744,"meta":665,"style":665},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import express from 'express'\nimport { initLogger } from 'evlog'\nimport { evlog } from 'evlog\u002Fexpress'\n\ninitLogger({\n  env: { service: 'my-api' },\n})\n\nconst app = express()\n\napp.use(evlog())\n\napp.get('\u002Fhealth', (req, res) => {\n  req.log.set({ route: 'health' })\n  res.json({ ok: true })\n})\n\napp.listen(3000)\n","src\u002Findex.ts","typescript",[591,746,747,770,794,813,820,833,861,870,875,894,899,918,923,966,1003,1031,1038,1043],{"__ignoreMap":665},[669,748,749,753,757,760,764,767],{"class":671,"line":672},[669,750,752],{"class":751},"s7zQu","import",[669,754,756],{"class":755},"sTEyZ"," express ",[669,758,759],{"class":751},"from",[669,761,763],{"class":762},"sMK4o"," '",[669,765,766],{"class":678},"express",[669,768,769],{"class":762},"'\n",[669,771,773,775,778,781,784,787,789,792],{"class":671,"line":772},2,[669,774,752],{"class":751},[669,776,777],{"class":762}," {",[669,779,780],{"class":755}," initLogger",[669,782,783],{"class":762}," }",[669,785,786],{"class":751}," from",[669,788,763],{"class":762},[669,790,791],{"class":678},"evlog",[669,793,769],{"class":762},[669,795,797,799,801,803,805,807,809,811],{"class":671,"line":796},3,[669,798,752],{"class":751},[669,800,777],{"class":762},[669,802,682],{"class":755},[669,804,783],{"class":762},[669,806,786],{"class":751},[669,808,763],{"class":762},[669,810,593],{"class":678},[669,812,769],{"class":762},[669,814,816],{"class":671,"line":815},4,[669,817,819],{"emptyLinePlaceholder":818},true,"\n",[669,821,823,827,830],{"class":671,"line":822},5,[669,824,826],{"class":825},"s2Zo4","initLogger",[669,828,829],{"class":755},"(",[669,831,832],{"class":762},"{\n",[669,834,836,840,843,845,848,850,852,855,858],{"class":671,"line":835},6,[669,837,839],{"class":838},"swJcz","  env",[669,841,842],{"class":762},":",[669,844,777],{"class":762},[669,846,847],{"class":838}," service",[669,849,842],{"class":762},[669,851,763],{"class":762},[669,853,854],{"class":678},"my-api",[669,856,857],{"class":762},"'",[669,859,860],{"class":762}," },\n",[669,862,864,867],{"class":671,"line":863},7,[669,865,866],{"class":762},"}",[669,868,869],{"class":755},")\n",[669,871,873],{"class":671,"line":872},8,[669,874,819],{"emptyLinePlaceholder":818},[669,876,878,882,885,888,891],{"class":671,"line":877},9,[669,879,881],{"class":880},"spNyl","const",[669,883,884],{"class":755}," app ",[669,886,887],{"class":762},"=",[669,889,890],{"class":825}," express",[669,892,893],{"class":755},"()\n",[669,895,897],{"class":671,"line":896},10,[669,898,819],{"emptyLinePlaceholder":818},[669,900,902,905,908,911,913,915],{"class":671,"line":901},11,[669,903,904],{"class":755},"app",[669,906,907],{"class":762},".",[669,909,910],{"class":825},"use",[669,912,829],{"class":755},[669,914,791],{"class":825},[669,916,917],{"class":755},"())\n",[669,919,921],{"class":671,"line":920},12,[669,922,819],{"emptyLinePlaceholder":818},[669,924,926,928,930,933,935,937,940,942,945,948,952,954,957,960,963],{"class":671,"line":925},13,[669,927,904],{"class":755},[669,929,907],{"class":762},[669,931,932],{"class":825},"get",[669,934,829],{"class":755},[669,936,857],{"class":762},[669,938,939],{"class":678},"\u002Fhealth",[669,941,857],{"class":762},[669,943,944],{"class":762},",",[669,946,947],{"class":762}," (",[669,949,951],{"class":950},"sHdIc","req",[669,953,944],{"class":762},[669,955,956],{"class":950}," res",[669,958,959],{"class":762},")",[669,961,962],{"class":880}," =>",[669,964,965],{"class":762}," {\n",[669,967,969,972,974,977,979,982,984,987,990,992,994,997,999,1001],{"class":671,"line":968},14,[669,970,971],{"class":755},"  req",[669,973,907],{"class":762},[669,975,976],{"class":755},"log",[669,978,907],{"class":762},[669,980,981],{"class":825},"set",[669,983,829],{"class":838},[669,985,986],{"class":762},"{",[669,988,989],{"class":838}," route",[669,991,842],{"class":762},[669,993,763],{"class":762},[669,995,996],{"class":678},"health",[669,998,857],{"class":762},[669,1000,783],{"class":762},[669,1002,869],{"class":838},[669,1004,1006,1009,1011,1014,1016,1018,1021,1023,1027,1029],{"class":671,"line":1005},15,[669,1007,1008],{"class":755},"  res",[669,1010,907],{"class":762},[669,1012,1013],{"class":825},"json",[669,1015,829],{"class":838},[669,1017,986],{"class":762},[669,1019,1020],{"class":838}," ok",[669,1022,842],{"class":762},[669,1024,1026],{"class":1025},"sfNiH"," true",[669,1028,783],{"class":762},[669,1030,869],{"class":838},[669,1032,1034,1036],{"class":671,"line":1033},16,[669,1035,866],{"class":762},[669,1037,869],{"class":755},[669,1039,1041],{"class":671,"line":1040},17,[669,1042,819],{"emptyLinePlaceholder":818},[669,1044,1046,1048,1050,1053,1055,1059],{"class":671,"line":1045},18,[669,1047,904],{"class":755},[669,1049,907],{"class":762},[669,1051,1052],{"class":825},"listen",[669,1054,829],{"class":755},[669,1056,1058],{"class":1057},"sbssI","3000",[669,1060,869],{"class":755},[1062,1063,1065,1069,1070,1076,1077,1080,1081,1084],"callout",{"color":1064,"icon":537},"info",[1066,1067,1068],"strong",{},"Using Vite?"," The ",[636,1071,1072,1075],{"href":535},[591,1073,1074],{},"evlog\u002Fvite"," plugin"," replaces the ",[591,1078,1079],{},"initLogger()"," call with compile-time auto-initialization, strips ",[591,1082,1083],{},"log.debug()"," from production builds, and injects source locations.",[587,1086,1087,1088,1090],{},"The logger is available on ",[591,1089,597],{}," with full TypeScript support via module augmentation, so no extra type annotations are needed.",[647,1092,51],{"id":1093},"wide-events",[587,1095,1096],{},"Build up context progressively through your handler. One request = one wide event:",[659,1098,1100],{"className":741,"code":1099,"filename":743,"language":744,"meta":665,"style":665},"app.get('\u002Fusers\u002F:id', async (req, res) => {\n  const userId = req.params.id\n\n  req.log.set({ user: { id: userId } })\n\n  const user = await db.findUser(userId)\n  req.log.set({ user: { name: user.name, plan: user.plan } })\n\n  const orders = await db.findOrders(userId)\n  req.log.set({ orders: { count: orders.length, totalRevenue: sum(orders) } })\n\n  res.json({ user, orders })\n})\n",[591,1101,1102,1138,1162,1166,1202,1206,1232,1286,1290,1314,1372,1376,1398],{"__ignoreMap":665},[669,1103,1104,1106,1108,1110,1112,1114,1117,1119,1121,1124,1126,1128,1130,1132,1134,1136],{"class":671,"line":672},[669,1105,904],{"class":755},[669,1107,907],{"class":762},[669,1109,932],{"class":825},[669,1111,829],{"class":755},[669,1113,857],{"class":762},[669,1115,1116],{"class":678},"\u002Fusers\u002F:id",[669,1118,857],{"class":762},[669,1120,944],{"class":762},[669,1122,1123],{"class":880}," async",[669,1125,947],{"class":762},[669,1127,951],{"class":950},[669,1129,944],{"class":762},[669,1131,956],{"class":950},[669,1133,959],{"class":762},[669,1135,962],{"class":880},[669,1137,965],{"class":762},[669,1139,1140,1143,1146,1149,1152,1154,1157,1159],{"class":671,"line":772},[669,1141,1142],{"class":880},"  const",[669,1144,1145],{"class":755}," userId",[669,1147,1148],{"class":762}," =",[669,1150,1151],{"class":755}," req",[669,1153,907],{"class":762},[669,1155,1156],{"class":755},"params",[669,1158,907],{"class":762},[669,1160,1161],{"class":755},"id\n",[669,1163,1164],{"class":671,"line":796},[669,1165,819],{"emptyLinePlaceholder":818},[669,1167,1168,1170,1172,1174,1176,1178,1180,1182,1185,1187,1189,1192,1194,1196,1198,1200],{"class":671,"line":815},[669,1169,971],{"class":755},[669,1171,907],{"class":762},[669,1173,976],{"class":755},[669,1175,907],{"class":762},[669,1177,981],{"class":825},[669,1179,829],{"class":838},[669,1181,986],{"class":762},[669,1183,1184],{"class":838}," user",[669,1186,842],{"class":762},[669,1188,777],{"class":762},[669,1190,1191],{"class":838}," id",[669,1193,842],{"class":762},[669,1195,1145],{"class":755},[669,1197,783],{"class":762},[669,1199,783],{"class":762},[669,1201,869],{"class":838},[669,1203,1204],{"class":671,"line":822},[669,1205,819],{"emptyLinePlaceholder":818},[669,1207,1208,1210,1212,1214,1217,1220,1222,1225,1227,1230],{"class":671,"line":835},[669,1209,1142],{"class":880},[669,1211,1184],{"class":755},[669,1213,1148],{"class":762},[669,1215,1216],{"class":751}," await",[669,1218,1219],{"class":755}," db",[669,1221,907],{"class":762},[669,1223,1224],{"class":825},"findUser",[669,1226,829],{"class":838},[669,1228,1229],{"class":755},"userId",[669,1231,869],{"class":838},[669,1233,1234,1236,1238,1240,1242,1244,1246,1248,1250,1252,1254,1257,1259,1261,1263,1266,1268,1271,1273,1275,1277,1280,1282,1284],{"class":671,"line":863},[669,1235,971],{"class":755},[669,1237,907],{"class":762},[669,1239,976],{"class":755},[669,1241,907],{"class":762},[669,1243,981],{"class":825},[669,1245,829],{"class":838},[669,1247,986],{"class":762},[669,1249,1184],{"class":838},[669,1251,842],{"class":762},[669,1253,777],{"class":762},[669,1255,1256],{"class":838}," name",[669,1258,842],{"class":762},[669,1260,1184],{"class":755},[669,1262,907],{"class":762},[669,1264,1265],{"class":755},"name",[669,1267,944],{"class":762},[669,1269,1270],{"class":838}," plan",[669,1272,842],{"class":762},[669,1274,1184],{"class":755},[669,1276,907],{"class":762},[669,1278,1279],{"class":755},"plan",[669,1281,783],{"class":762},[669,1283,783],{"class":762},[669,1285,869],{"class":838},[669,1287,1288],{"class":671,"line":872},[669,1289,819],{"emptyLinePlaceholder":818},[669,1291,1292,1294,1297,1299,1301,1303,1305,1308,1310,1312],{"class":671,"line":877},[669,1293,1142],{"class":880},[669,1295,1296],{"class":755}," orders",[669,1298,1148],{"class":762},[669,1300,1216],{"class":751},[669,1302,1219],{"class":755},[669,1304,907],{"class":762},[669,1306,1307],{"class":825},"findOrders",[669,1309,829],{"class":838},[669,1311,1229],{"class":755},[669,1313,869],{"class":838},[669,1315,1316,1318,1320,1322,1324,1326,1328,1330,1332,1334,1336,1339,1341,1343,1345,1348,1350,1353,1355,1358,1360,1363,1366,1368,1370],{"class":671,"line":896},[669,1317,971],{"class":755},[669,1319,907],{"class":762},[669,1321,976],{"class":755},[669,1323,907],{"class":762},[669,1325,981],{"class":825},[669,1327,829],{"class":838},[669,1329,986],{"class":762},[669,1331,1296],{"class":838},[669,1333,842],{"class":762},[669,1335,777],{"class":762},[669,1337,1338],{"class":838}," count",[669,1340,842],{"class":762},[669,1342,1296],{"class":755},[669,1344,907],{"class":762},[669,1346,1347],{"class":755},"length",[669,1349,944],{"class":762},[669,1351,1352],{"class":838}," totalRevenue",[669,1354,842],{"class":762},[669,1356,1357],{"class":825}," sum",[669,1359,829],{"class":838},[669,1361,1362],{"class":755},"orders",[669,1364,1365],{"class":838},") ",[669,1367,866],{"class":762},[669,1369,783],{"class":762},[669,1371,869],{"class":838},[669,1373,1374],{"class":671,"line":901},[669,1375,819],{"emptyLinePlaceholder":818},[669,1377,1378,1380,1382,1384,1386,1388,1390,1392,1394,1396],{"class":671,"line":920},[669,1379,1008],{"class":755},[669,1381,907],{"class":762},[669,1383,1013],{"class":825},[669,1385,829],{"class":838},[669,1387,986],{"class":762},[669,1389,1184],{"class":755},[669,1391,944],{"class":762},[669,1393,1296],{"class":755},[669,1395,783],{"class":762},[669,1397,869],{"class":838},[669,1399,1400,1402],{"class":671,"line":925},[669,1401,866],{"class":762},[669,1403,869],{"class":755},[587,1405,1406],{},"All fields are merged into a single wide event emitted when the response finishes:",[659,1408,1411],{"className":661,"code":1409,"filename":1410,"language":664,"meta":665,"style":665},"14:58:15 INFO [my-api] GET \u002Fusers\u002Fusr_123 200 in 12ms\n  ├─ orders: count=2 totalRevenue=6298\n  ├─ user: id=usr_123 name=Alice plan=pro\n  └─ requestId: 4a8ff3a8-...\n","Terminal output",[591,1412,1413,1424,1444,1460],{"__ignoreMap":665},[669,1414,1415,1418,1421],{"class":671,"line":672},[669,1416,1417],{"class":675},"14:58:15",[669,1419,1420],{"class":678}," INFO",[669,1422,1423],{"class":755}," [my-api] GET \u002Fusers\u002Fusr_123 200 in 12ms\n",[669,1425,1426,1429,1432,1435,1438,1441],{"class":671,"line":772},[669,1427,1428],{"class":675},"  ├─",[669,1430,1431],{"class":678}," orders:",[669,1433,1434],{"class":678}," count=",[669,1436,1437],{"class":1057},"2",[669,1439,1440],{"class":678}," totalRevenue=",[669,1442,1443],{"class":1057},"6298\n",[669,1445,1446,1448,1451,1454,1457],{"class":671,"line":796},[669,1447,1428],{"class":675},[669,1449,1450],{"class":678}," user:",[669,1452,1453],{"class":678}," id=usr_123",[669,1455,1456],{"class":678}," name=Alice",[669,1458,1459],{"class":678}," plan=pro\n",[669,1461,1462,1465,1468],{"class":671,"line":815},[669,1463,1464],{"class":675},"  └─",[669,1466,1467],{"class":678}," requestId:",[669,1469,1470],{"class":678}," 4a8ff3a8-...\n",[647,1472,1474],{"id":1473},"uselogger","useLogger()",[587,1476,1477,1478,1480,1481,1483],{},"Use ",[591,1479,1474],{}," to access the request-scoped logger from anywhere in the call stack without passing ",[591,1482,951],{}," through your service layer:",[659,1485,1488],{"className":741,"code":1486,"filename":1487,"language":744,"meta":665,"style":665},"import { useLogger } from 'evlog\u002Fexpress'\n\nexport async function findUser(id: string) {\n  const log = useLogger()\n  log.set({ user: { id } })\n\n  const user = await db.findUser(id)\n  log.set({ user: { name: user.name, plan: user.plan } })\n\n  return user\n}\n","src\u002Fservices\u002Fuser.ts",[591,1489,1490,1509,1513,1540,1553,1580,1584,1606,1652,1656,1664],{"__ignoreMap":665},[669,1491,1492,1494,1496,1499,1501,1503,1505,1507],{"class":671,"line":672},[669,1493,752],{"class":751},[669,1495,777],{"class":762},[669,1497,1498],{"class":755}," useLogger",[669,1500,783],{"class":762},[669,1502,786],{"class":751},[669,1504,763],{"class":762},[669,1506,593],{"class":678},[669,1508,769],{"class":762},[669,1510,1511],{"class":671,"line":772},[669,1512,819],{"emptyLinePlaceholder":818},[669,1514,1515,1518,1520,1523,1526,1528,1531,1533,1536,1538],{"class":671,"line":796},[669,1516,1517],{"class":751},"export",[669,1519,1123],{"class":880},[669,1521,1522],{"class":880}," function",[669,1524,1525],{"class":825}," findUser",[669,1527,829],{"class":762},[669,1529,1530],{"class":950},"id",[669,1532,842],{"class":762},[669,1534,1535],{"class":675}," string",[669,1537,959],{"class":762},[669,1539,965],{"class":762},[669,1541,1542,1544,1547,1549,1551],{"class":671,"line":815},[669,1543,1142],{"class":880},[669,1545,1546],{"class":755}," log",[669,1548,1148],{"class":762},[669,1550,1498],{"class":825},[669,1552,893],{"class":838},[669,1554,1555,1558,1560,1562,1564,1566,1568,1570,1572,1574,1576,1578],{"class":671,"line":822},[669,1556,1557],{"class":755},"  log",[669,1559,907],{"class":762},[669,1561,981],{"class":825},[669,1563,829],{"class":838},[669,1565,986],{"class":762},[669,1567,1184],{"class":838},[669,1569,842],{"class":762},[669,1571,777],{"class":762},[669,1573,1191],{"class":755},[669,1575,783],{"class":762},[669,1577,783],{"class":762},[669,1579,869],{"class":838},[669,1581,1582],{"class":671,"line":835},[669,1583,819],{"emptyLinePlaceholder":818},[669,1585,1586,1588,1590,1592,1594,1596,1598,1600,1602,1604],{"class":671,"line":863},[669,1587,1142],{"class":880},[669,1589,1184],{"class":755},[669,1591,1148],{"class":762},[669,1593,1216],{"class":751},[669,1595,1219],{"class":755},[669,1597,907],{"class":762},[669,1599,1224],{"class":825},[669,1601,829],{"class":838},[669,1603,1530],{"class":755},[669,1605,869],{"class":838},[669,1607,1608,1610,1612,1614,1616,1618,1620,1622,1624,1626,1628,1630,1632,1634,1636,1638,1640,1642,1644,1646,1648,1650],{"class":671,"line":872},[669,1609,1557],{"class":755},[669,1611,907],{"class":762},[669,1613,981],{"class":825},[669,1615,829],{"class":838},[669,1617,986],{"class":762},[669,1619,1184],{"class":838},[669,1621,842],{"class":762},[669,1623,777],{"class":762},[669,1625,1256],{"class":838},[669,1627,842],{"class":762},[669,1629,1184],{"class":755},[669,1631,907],{"class":762},[669,1633,1265],{"class":755},[669,1635,944],{"class":762},[669,1637,1270],{"class":838},[669,1639,842],{"class":762},[669,1641,1184],{"class":755},[669,1643,907],{"class":762},[669,1645,1279],{"class":755},[669,1647,783],{"class":762},[669,1649,783],{"class":762},[669,1651,869],{"class":838},[669,1653,1654],{"class":671,"line":877},[669,1655,819],{"emptyLinePlaceholder":818},[669,1657,1658,1661],{"class":671,"line":896},[669,1659,1660],{"class":751},"  return",[669,1662,1663],{"class":755}," user\n",[669,1665,1666],{"class":671,"line":901},[669,1667,1668],{"class":762},"}\n",[659,1670,1672],{"className":741,"code":1671,"filename":743,"language":744,"meta":665,"style":665},"import { findUser } from '.\u002Fservices\u002Fuser'\n\napp.get('\u002Fusers\u002F:id', async (req, res) => {\n  const user = await findUser(req.params.id)\n  res.json(user)\n})\n",[591,1673,1674,1693,1697,1731,1757,1772],{"__ignoreMap":665},[669,1675,1676,1678,1680,1682,1684,1686,1688,1691],{"class":671,"line":672},[669,1677,752],{"class":751},[669,1679,777],{"class":762},[669,1681,1525],{"class":755},[669,1683,783],{"class":762},[669,1685,786],{"class":751},[669,1687,763],{"class":762},[669,1689,1690],{"class":678},".\u002Fservices\u002Fuser",[669,1692,769],{"class":762},[669,1694,1695],{"class":671,"line":772},[669,1696,819],{"emptyLinePlaceholder":818},[669,1698,1699,1701,1703,1705,1707,1709,1711,1713,1715,1717,1719,1721,1723,1725,1727,1729],{"class":671,"line":796},[669,1700,904],{"class":755},[669,1702,907],{"class":762},[669,1704,932],{"class":825},[669,1706,829],{"class":755},[669,1708,857],{"class":762},[669,1710,1116],{"class":678},[669,1712,857],{"class":762},[669,1714,944],{"class":762},[669,1716,1123],{"class":880},[669,1718,947],{"class":762},[669,1720,951],{"class":950},[669,1722,944],{"class":762},[669,1724,956],{"class":950},[669,1726,959],{"class":762},[669,1728,962],{"class":880},[669,1730,965],{"class":762},[669,1732,1733,1735,1737,1739,1741,1743,1745,1747,1749,1751,1753,1755],{"class":671,"line":815},[669,1734,1142],{"class":880},[669,1736,1184],{"class":755},[669,1738,1148],{"class":762},[669,1740,1216],{"class":751},[669,1742,1525],{"class":825},[669,1744,829],{"class":838},[669,1746,951],{"class":755},[669,1748,907],{"class":762},[669,1750,1156],{"class":755},[669,1752,907],{"class":762},[669,1754,1530],{"class":755},[669,1756,869],{"class":838},[669,1758,1759,1761,1763,1765,1767,1770],{"class":671,"line":822},[669,1760,1008],{"class":755},[669,1762,907],{"class":762},[669,1764,1013],{"class":825},[669,1766,829],{"class":838},[669,1768,1769],{"class":755},"user",[669,1771,869],{"class":838},[669,1773,1774,1776],{"class":671,"line":835},[669,1775,866],{"class":762},[669,1777,869],{"class":755},[587,1779,1780,1781,1783,1784,1786,1787,1789,1790,1793],{},"Both ",[591,1782,597],{}," and ",[591,1785,1474],{}," return the same logger instance. ",[591,1788,1474],{}," uses ",[591,1791,1792],{},"AsyncLocalStorage"," to propagate the logger across async boundaries.",[647,1795,1797,1798,959],{"id":1796},"background-work-logfork","Background work (",[591,1799,1800],{},"log.fork",[587,1802,1803,1804,1807,1808,1813,1814,1816,1817,1820,1821,1783,1824,1827,1828,1832],{},"Fire-and-forget async work that finishes ",[1066,1805,1806],{},"after"," the response can no longer update the request wide event (the logger is sealed after emit). Use ",[1066,1809,1810],{},[591,1811,1812],{},"req.log.fork(label, fn)"," so ",[591,1815,1474],{}," inside ",[591,1818,1819],{},"fn"," targets the forked logger, which emits its own event with ",[591,1822,1823],{},"operation",[591,1825,1826],{},"_parentRequestId",". See ",[636,1829,1831],{"href":1830},"\u002Flearn\u002Fwide-events#after-emit-sealing-and-background-work","After emit"," in Wide events.",[659,1834,1836],{"className":741,"code":1835,"filename":743,"language":744,"meta":665,"style":665},"import { evlog, useLogger } from 'evlog\u002Fexpress'\n\napp.use(evlog())\n\napp.post('\u002Forders', (req, res) => {\n  req.log.set({ orderId: 'ord_1' })\n  req.log.fork!('fulfill_order', async () => {\n    const log = useLogger()\n    log.set({ step: 'inventory_ok' })\n  })\n  res.json({ ok: true })\n})\n",[591,1837,1838,1860,1864,1878,1882,1916,1948,1984,1997,2026,2033,2055],{"__ignoreMap":665},[669,1839,1840,1842,1844,1846,1848,1850,1852,1854,1856,1858],{"class":671,"line":672},[669,1841,752],{"class":751},[669,1843,777],{"class":762},[669,1845,682],{"class":755},[669,1847,944],{"class":762},[669,1849,1498],{"class":755},[669,1851,783],{"class":762},[669,1853,786],{"class":751},[669,1855,763],{"class":762},[669,1857,593],{"class":678},[669,1859,769],{"class":762},[669,1861,1862],{"class":671,"line":772},[669,1863,819],{"emptyLinePlaceholder":818},[669,1865,1866,1868,1870,1872,1874,1876],{"class":671,"line":796},[669,1867,904],{"class":755},[669,1869,907],{"class":762},[669,1871,910],{"class":825},[669,1873,829],{"class":755},[669,1875,791],{"class":825},[669,1877,917],{"class":755},[669,1879,1880],{"class":671,"line":815},[669,1881,819],{"emptyLinePlaceholder":818},[669,1883,1884,1886,1888,1891,1893,1895,1898,1900,1902,1904,1906,1908,1910,1912,1914],{"class":671,"line":822},[669,1885,904],{"class":755},[669,1887,907],{"class":762},[669,1889,1890],{"class":825},"post",[669,1892,829],{"class":755},[669,1894,857],{"class":762},[669,1896,1897],{"class":678},"\u002Forders",[669,1899,857],{"class":762},[669,1901,944],{"class":762},[669,1903,947],{"class":762},[669,1905,951],{"class":950},[669,1907,944],{"class":762},[669,1909,956],{"class":950},[669,1911,959],{"class":762},[669,1913,962],{"class":880},[669,1915,965],{"class":762},[669,1917,1918,1920,1922,1924,1926,1928,1930,1932,1935,1937,1939,1942,1944,1946],{"class":671,"line":835},[669,1919,971],{"class":755},[669,1921,907],{"class":762},[669,1923,976],{"class":755},[669,1925,907],{"class":762},[669,1927,981],{"class":825},[669,1929,829],{"class":838},[669,1931,986],{"class":762},[669,1933,1934],{"class":838}," orderId",[669,1936,842],{"class":762},[669,1938,763],{"class":762},[669,1940,1941],{"class":678},"ord_1",[669,1943,857],{"class":762},[669,1945,783],{"class":762},[669,1947,869],{"class":838},[669,1949,1950,1952,1954,1956,1958,1961,1964,1966,1968,1971,1973,1975,1977,1980,1982],{"class":671,"line":863},[669,1951,971],{"class":755},[669,1953,907],{"class":762},[669,1955,976],{"class":755},[669,1957,907],{"class":762},[669,1959,1960],{"class":825},"fork",[669,1962,1963],{"class":762},"!",[669,1965,829],{"class":838},[669,1967,857],{"class":762},[669,1969,1970],{"class":678},"fulfill_order",[669,1972,857],{"class":762},[669,1974,944],{"class":762},[669,1976,1123],{"class":880},[669,1978,1979],{"class":762}," ()",[669,1981,962],{"class":880},[669,1983,965],{"class":762},[669,1985,1986,1989,1991,1993,1995],{"class":671,"line":872},[669,1987,1988],{"class":880},"    const",[669,1990,1546],{"class":755},[669,1992,1148],{"class":762},[669,1994,1498],{"class":825},[669,1996,893],{"class":838},[669,1998,1999,2002,2004,2006,2008,2010,2013,2015,2017,2020,2022,2024],{"class":671,"line":877},[669,2000,2001],{"class":755},"    log",[669,2003,907],{"class":762},[669,2005,981],{"class":825},[669,2007,829],{"class":838},[669,2009,986],{"class":762},[669,2011,2012],{"class":838}," step",[669,2014,842],{"class":762},[669,2016,763],{"class":762},[669,2018,2019],{"class":678},"inventory_ok",[669,2021,857],{"class":762},[669,2023,783],{"class":762},[669,2025,869],{"class":838},[669,2027,2028,2031],{"class":671,"line":896},[669,2029,2030],{"class":762},"  }",[669,2032,869],{"class":838},[669,2034,2035,2037,2039,2041,2043,2045,2047,2049,2051,2053],{"class":671,"line":901},[669,2036,1008],{"class":755},[669,2038,907],{"class":762},[669,2040,1013],{"class":825},[669,2042,829],{"class":838},[669,2044,986],{"class":762},[669,2046,1020],{"class":838},[669,2048,842],{"class":762},[669,2050,1026],{"class":1025},[669,2052,783],{"class":762},[669,2054,869],{"class":838},[669,2056,2057,2059],{"class":671,"line":920},[669,2058,866],{"class":762},[669,2060,869],{"class":755},[647,2062,2064],{"id":2063},"error-handling","Error Handling",[587,2066,1477,2067,2070,2071,2074,2075,2078,2079,2082],{},[591,2068,2069],{},"createError"," for structured errors with ",[591,2072,2073],{},"why",", ",[591,2076,2077],{},"fix",", and ",[591,2080,2081],{},"link"," fields. Express uses a 4-argument error handler middleware:",[659,2084,2086],{"className":741,"code":2085,"filename":743,"language":744,"meta":665,"style":665},"import { createError, parseError } from 'evlog'\n\napp.get('\u002Fcheckout', () => {\n  throw createError({\n    message: 'Payment failed',\n    status: 402,\n    why: 'Card declined by issuer',\n    fix: 'Try a different payment method',\n    link: 'https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined',\n  })\n})\n\napp.use((err, req, res, next) => {\n  req.log.error(err)\n  const parsed = parseError(err)\n\n  res.status(parsed.status).json({\n    message: parsed.message,\n    why: parsed.why,\n    fix: parsed.fix,\n    link: parsed.link,\n  })\n})\n",[591,2087,2088,2112,2116,2141,2152,2169,2181,2197,2213,2229,2235,2241,2245,2279,2298,2315,2319,2347,2362,2377,2392,2407,2414],{"__ignoreMap":665},[669,2089,2090,2092,2094,2097,2099,2102,2104,2106,2108,2110],{"class":671,"line":672},[669,2091,752],{"class":751},[669,2093,777],{"class":762},[669,2095,2096],{"class":755}," createError",[669,2098,944],{"class":762},[669,2100,2101],{"class":755}," parseError",[669,2103,783],{"class":762},[669,2105,786],{"class":751},[669,2107,763],{"class":762},[669,2109,791],{"class":678},[669,2111,769],{"class":762},[669,2113,2114],{"class":671,"line":772},[669,2115,819],{"emptyLinePlaceholder":818},[669,2117,2118,2120,2122,2124,2126,2128,2131,2133,2135,2137,2139],{"class":671,"line":796},[669,2119,904],{"class":755},[669,2121,907],{"class":762},[669,2123,932],{"class":825},[669,2125,829],{"class":755},[669,2127,857],{"class":762},[669,2129,2130],{"class":678},"\u002Fcheckout",[669,2132,857],{"class":762},[669,2134,944],{"class":762},[669,2136,1979],{"class":762},[669,2138,962],{"class":880},[669,2140,965],{"class":762},[669,2142,2143,2146,2148,2150],{"class":671,"line":815},[669,2144,2145],{"class":751},"  throw",[669,2147,2096],{"class":825},[669,2149,829],{"class":838},[669,2151,832],{"class":762},[669,2153,2154,2157,2159,2161,2164,2166],{"class":671,"line":822},[669,2155,2156],{"class":838},"    message",[669,2158,842],{"class":762},[669,2160,763],{"class":762},[669,2162,2163],{"class":678},"Payment failed",[669,2165,857],{"class":762},[669,2167,2168],{"class":762},",\n",[669,2170,2171,2174,2176,2179],{"class":671,"line":835},[669,2172,2173],{"class":838},"    status",[669,2175,842],{"class":762},[669,2177,2178],{"class":1057}," 402",[669,2180,2168],{"class":762},[669,2182,2183,2186,2188,2190,2193,2195],{"class":671,"line":863},[669,2184,2185],{"class":838},"    why",[669,2187,842],{"class":762},[669,2189,763],{"class":762},[669,2191,2192],{"class":678},"Card declined by issuer",[669,2194,857],{"class":762},[669,2196,2168],{"class":762},[669,2198,2199,2202,2204,2206,2209,2211],{"class":671,"line":872},[669,2200,2201],{"class":838},"    fix",[669,2203,842],{"class":762},[669,2205,763],{"class":762},[669,2207,2208],{"class":678},"Try a different payment method",[669,2210,857],{"class":762},[669,2212,2168],{"class":762},[669,2214,2215,2218,2220,2222,2225,2227],{"class":671,"line":877},[669,2216,2217],{"class":838},"    link",[669,2219,842],{"class":762},[669,2221,763],{"class":762},[669,2223,2224],{"class":678},"https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined",[669,2226,857],{"class":762},[669,2228,2168],{"class":762},[669,2230,2231,2233],{"class":671,"line":896},[669,2232,2030],{"class":762},[669,2234,869],{"class":838},[669,2236,2237,2239],{"class":671,"line":901},[669,2238,866],{"class":762},[669,2240,869],{"class":755},[669,2242,2243],{"class":671,"line":920},[669,2244,819],{"emptyLinePlaceholder":818},[669,2246,2247,2249,2251,2253,2255,2257,2260,2262,2264,2266,2268,2270,2273,2275,2277],{"class":671,"line":925},[669,2248,904],{"class":755},[669,2250,907],{"class":762},[669,2252,910],{"class":825},[669,2254,829],{"class":755},[669,2256,829],{"class":762},[669,2258,2259],{"class":950},"err",[669,2261,944],{"class":762},[669,2263,1151],{"class":950},[669,2265,944],{"class":762},[669,2267,956],{"class":950},[669,2269,944],{"class":762},[669,2271,2272],{"class":950}," next",[669,2274,959],{"class":762},[669,2276,962],{"class":880},[669,2278,965],{"class":762},[669,2280,2281,2283,2285,2287,2289,2292,2294,2296],{"class":671,"line":968},[669,2282,971],{"class":755},[669,2284,907],{"class":762},[669,2286,976],{"class":755},[669,2288,907],{"class":762},[669,2290,2291],{"class":825},"error",[669,2293,829],{"class":838},[669,2295,2259],{"class":755},[669,2297,869],{"class":838},[669,2299,2300,2302,2305,2307,2309,2311,2313],{"class":671,"line":1005},[669,2301,1142],{"class":880},[669,2303,2304],{"class":755}," parsed",[669,2306,1148],{"class":762},[669,2308,2101],{"class":825},[669,2310,829],{"class":838},[669,2312,2259],{"class":755},[669,2314,869],{"class":838},[669,2316,2317],{"class":671,"line":1033},[669,2318,819],{"emptyLinePlaceholder":818},[669,2320,2321,2323,2325,2328,2330,2333,2335,2337,2339,2341,2343,2345],{"class":671,"line":1040},[669,2322,1008],{"class":755},[669,2324,907],{"class":762},[669,2326,2327],{"class":825},"status",[669,2329,829],{"class":838},[669,2331,2332],{"class":755},"parsed",[669,2334,907],{"class":762},[669,2336,2327],{"class":755},[669,2338,959],{"class":838},[669,2340,907],{"class":762},[669,2342,1013],{"class":825},[669,2344,829],{"class":838},[669,2346,832],{"class":762},[669,2348,2349,2351,2353,2355,2357,2360],{"class":671,"line":1045},[669,2350,2156],{"class":838},[669,2352,842],{"class":762},[669,2354,2304],{"class":755},[669,2356,907],{"class":762},[669,2358,2359],{"class":755},"message",[669,2361,2168],{"class":762},[669,2363,2365,2367,2369,2371,2373,2375],{"class":671,"line":2364},19,[669,2366,2185],{"class":838},[669,2368,842],{"class":762},[669,2370,2304],{"class":755},[669,2372,907],{"class":762},[669,2374,2073],{"class":755},[669,2376,2168],{"class":762},[669,2378,2380,2382,2384,2386,2388,2390],{"class":671,"line":2379},20,[669,2381,2201],{"class":838},[669,2383,842],{"class":762},[669,2385,2304],{"class":755},[669,2387,907],{"class":762},[669,2389,2077],{"class":755},[669,2391,2168],{"class":762},[669,2393,2395,2397,2399,2401,2403,2405],{"class":671,"line":2394},21,[669,2396,2217],{"class":838},[669,2398,842],{"class":762},[669,2400,2304],{"class":755},[669,2402,907],{"class":762},[669,2404,2081],{"class":755},[669,2406,2168],{"class":762},[669,2408,2410,2412],{"class":671,"line":2409},22,[669,2411,2030],{"class":762},[669,2413,869],{"class":838},[669,2415,2417,2419],{"class":671,"line":2416},23,[669,2418,866],{"class":762},[669,2420,869],{"class":755},[587,2422,2423],{},"The error is captured and logged with both the custom context and structured error fields:",[659,2425,2427],{"className":661,"code":2426,"filename":1410,"language":664,"meta":665,"style":665},"14:58:20 ERROR [my-api] GET \u002Fcheckout 402 in 3ms\n  ├─ error: name=EvlogError message=Payment failed status=402\n  └─ requestId: 880a50ac-...\n",[591,2428,2429,2440,2462],{"__ignoreMap":665},[669,2430,2431,2434,2437],{"class":671,"line":672},[669,2432,2433],{"class":675},"14:58:20",[669,2435,2436],{"class":678}," ERROR",[669,2438,2439],{"class":755}," [my-api] GET \u002Fcheckout 402 in 3ms\n",[669,2441,2442,2444,2447,2450,2453,2456,2459],{"class":671,"line":772},[669,2443,1428],{"class":675},[669,2445,2446],{"class":678}," error:",[669,2448,2449],{"class":678}," name=EvlogError",[669,2451,2452],{"class":678}," message=Payment",[669,2454,2455],{"class":678}," failed",[669,2457,2458],{"class":678}," status=",[669,2460,2461],{"class":1057},"402\n",[669,2463,2464,2466,2468],{"class":671,"line":796},[669,2465,1464],{"class":675},[669,2467,1467],{"class":678},[669,2469,2470],{"class":678}," 880a50ac-...\n",[647,2472,526],{"id":2473},"configuration",[587,2475,2476,2477,2480,2481,2483],{},"See the ",[636,2478,2479],{"href":527},"Configuration reference"," for all available options (",[591,2482,826],{},", middleware options, sampling, silent mode, etc.).",[647,2485,2487],{"id":2486},"drain-enrichers","Drain & Enrichers",[587,2489,2490],{},"Configure drain adapters and enrichers directly in the middleware options:",[659,2492,2494],{"className":741,"code":2493,"filename":743,"language":744,"meta":665,"style":665},"import { createAxiomDrain } from 'evlog\u002Faxiom'\nimport { createUserAgentEnricher } from 'evlog\u002Fenrichers'\n\nconst userAgent = createUserAgentEnricher()\n\napp.use(evlog({\n  drain: createAxiomDrain(),\n  enrich: (ctx) => {\n    userAgent(ctx)\n    ctx.event.region = process.env.FLY_REGION\n  },\n}))\n",[591,2495,2496,2516,2536,2540,2553,2557,2573,2587,2605,2616,2646,2651],{"__ignoreMap":665},[669,2497,2498,2500,2502,2505,2507,2509,2511,2514],{"class":671,"line":672},[669,2499,752],{"class":751},[669,2501,777],{"class":762},[669,2503,2504],{"class":755}," createAxiomDrain",[669,2506,783],{"class":762},[669,2508,786],{"class":751},[669,2510,763],{"class":762},[669,2512,2513],{"class":678},"evlog\u002Faxiom",[669,2515,769],{"class":762},[669,2517,2518,2520,2522,2525,2527,2529,2531,2534],{"class":671,"line":772},[669,2519,752],{"class":751},[669,2521,777],{"class":762},[669,2523,2524],{"class":755}," createUserAgentEnricher",[669,2526,783],{"class":762},[669,2528,786],{"class":751},[669,2530,763],{"class":762},[669,2532,2533],{"class":678},"evlog\u002Fenrichers",[669,2535,769],{"class":762},[669,2537,2538],{"class":671,"line":796},[669,2539,819],{"emptyLinePlaceholder":818},[669,2541,2542,2544,2547,2549,2551],{"class":671,"line":815},[669,2543,881],{"class":880},[669,2545,2546],{"class":755}," userAgent ",[669,2548,887],{"class":762},[669,2550,2524],{"class":825},[669,2552,893],{"class":755},[669,2554,2555],{"class":671,"line":822},[669,2556,819],{"emptyLinePlaceholder":818},[669,2558,2559,2561,2563,2565,2567,2569,2571],{"class":671,"line":835},[669,2560,904],{"class":755},[669,2562,907],{"class":762},[669,2564,910],{"class":825},[669,2566,829],{"class":755},[669,2568,791],{"class":825},[669,2570,829],{"class":755},[669,2572,832],{"class":762},[669,2574,2575,2578,2580,2582,2585],{"class":671,"line":863},[669,2576,2577],{"class":838},"  drain",[669,2579,842],{"class":762},[669,2581,2504],{"class":825},[669,2583,2584],{"class":755},"()",[669,2586,2168],{"class":762},[669,2588,2589,2592,2594,2596,2599,2601,2603],{"class":671,"line":872},[669,2590,2591],{"class":825},"  enrich",[669,2593,842],{"class":762},[669,2595,947],{"class":762},[669,2597,2598],{"class":950},"ctx",[669,2600,959],{"class":762},[669,2602,962],{"class":880},[669,2604,965],{"class":762},[669,2606,2607,2610,2612,2614],{"class":671,"line":877},[669,2608,2609],{"class":825},"    userAgent",[669,2611,829],{"class":838},[669,2613,2598],{"class":755},[669,2615,869],{"class":838},[669,2617,2618,2621,2623,2626,2628,2631,2633,2636,2638,2641,2643],{"class":671,"line":896},[669,2619,2620],{"class":755},"    ctx",[669,2622,907],{"class":762},[669,2624,2625],{"class":755},"event",[669,2627,907],{"class":762},[669,2629,2630],{"class":755},"region",[669,2632,1148],{"class":762},[669,2634,2635],{"class":755}," process",[669,2637,907],{"class":762},[669,2639,2640],{"class":755},"env",[669,2642,907],{"class":762},[669,2644,2645],{"class":755},"FLY_REGION\n",[669,2647,2648],{"class":671,"line":901},[669,2649,2650],{"class":762},"  },\n",[669,2652,2653,2655],{"class":671,"line":920},[669,2654,866],{"class":762},[669,2656,2657],{"class":755},"))\n",[651,2659,2661],{"id":2660},"pipeline-batching-retry","Pipeline (Batching & Retry)",[587,2663,2664,2665,2668],{},"For production, wrap your adapter with ",[591,2666,2667],{},"createDrainPipeline"," to batch events and retry on failure:",[659,2670,2672],{"className":741,"code":2671,"filename":743,"language":744,"meta":665,"style":665},"import type { DrainContext } from 'evlog'\nimport { createAxiomDrain } from 'evlog\u002Faxiom'\nimport { createDrainPipeline } from 'evlog\u002Fpipeline'\n\nconst pipeline = createDrainPipeline\u003CDrainContext>({\n  batch: { size: 50, intervalMs: 5000 },\n  retry: { maxAttempts: 3 },\n})\nconst drain = pipeline(createAxiomDrain())\n\napp.use(evlog({ drain }))\n",[591,2673,2674,2696,2714,2734,2738,2762,2791,2810,2816,2835,2839],{"__ignoreMap":665},[669,2675,2676,2678,2681,2683,2686,2688,2690,2692,2694],{"class":671,"line":672},[669,2677,752],{"class":751},[669,2679,2680],{"class":751}," type",[669,2682,777],{"class":762},[669,2684,2685],{"class":755}," DrainContext",[669,2687,783],{"class":762},[669,2689,786],{"class":751},[669,2691,763],{"class":762},[669,2693,791],{"class":678},[669,2695,769],{"class":762},[669,2697,2698,2700,2702,2704,2706,2708,2710,2712],{"class":671,"line":772},[669,2699,752],{"class":751},[669,2701,777],{"class":762},[669,2703,2504],{"class":755},[669,2705,783],{"class":762},[669,2707,786],{"class":751},[669,2709,763],{"class":762},[669,2711,2513],{"class":678},[669,2713,769],{"class":762},[669,2715,2716,2718,2720,2723,2725,2727,2729,2732],{"class":671,"line":796},[669,2717,752],{"class":751},[669,2719,777],{"class":762},[669,2721,2722],{"class":755}," createDrainPipeline",[669,2724,783],{"class":762},[669,2726,786],{"class":751},[669,2728,763],{"class":762},[669,2730,2731],{"class":678},"evlog\u002Fpipeline",[669,2733,769],{"class":762},[669,2735,2736],{"class":671,"line":815},[669,2737,819],{"emptyLinePlaceholder":818},[669,2739,2740,2742,2745,2747,2749,2752,2755,2758,2760],{"class":671,"line":822},[669,2741,881],{"class":880},[669,2743,2744],{"class":755}," pipeline ",[669,2746,887],{"class":762},[669,2748,2722],{"class":825},[669,2750,2751],{"class":762},"\u003C",[669,2753,2754],{"class":675},"DrainContext",[669,2756,2757],{"class":762},">",[669,2759,829],{"class":755},[669,2761,832],{"class":762},[669,2763,2764,2767,2769,2771,2774,2776,2779,2781,2784,2786,2789],{"class":671,"line":835},[669,2765,2766],{"class":838},"  batch",[669,2768,842],{"class":762},[669,2770,777],{"class":762},[669,2772,2773],{"class":838}," size",[669,2775,842],{"class":762},[669,2777,2778],{"class":1057}," 50",[669,2780,944],{"class":762},[669,2782,2783],{"class":838}," intervalMs",[669,2785,842],{"class":762},[669,2787,2788],{"class":1057}," 5000",[669,2790,860],{"class":762},[669,2792,2793,2796,2798,2800,2803,2805,2808],{"class":671,"line":863},[669,2794,2795],{"class":838},"  retry",[669,2797,842],{"class":762},[669,2799,777],{"class":762},[669,2801,2802],{"class":838}," maxAttempts",[669,2804,842],{"class":762},[669,2806,2807],{"class":1057}," 3",[669,2809,860],{"class":762},[669,2811,2812,2814],{"class":671,"line":872},[669,2813,866],{"class":762},[669,2815,869],{"class":755},[669,2817,2818,2820,2823,2825,2828,2830,2833],{"class":671,"line":877},[669,2819,881],{"class":880},[669,2821,2822],{"class":755}," drain ",[669,2824,887],{"class":762},[669,2826,2827],{"class":825}," pipeline",[669,2829,829],{"class":755},[669,2831,2832],{"class":825},"createAxiomDrain",[669,2834,917],{"class":755},[669,2836,2837],{"class":671,"line":896},[669,2838,819],{"emptyLinePlaceholder":818},[669,2840,2841,2843,2845,2847,2849,2851,2853,2855,2857,2859],{"class":671,"line":901},[669,2842,904],{"class":755},[669,2844,907],{"class":762},[669,2846,910],{"class":825},[669,2848,829],{"class":755},[669,2850,791],{"class":825},[669,2852,829],{"class":755},[669,2854,986],{"class":762},[669,2856,2822],{"class":755},[669,2858,866],{"class":762},[669,2860,2657],{"class":755},[1062,2862,2863,2864,2867,2868,2871],{"color":1064,"icon":13},"Call ",[591,2865,2866],{},"drain.flush()"," on server shutdown to ensure all buffered events are sent. See the ",[636,2869,2870],{"href":514},"Pipeline docs"," for all options.",[647,2873,2875],{"id":2874},"tail-sampling","Tail Sampling",[587,2877,1477,2878,2881],{},[591,2879,2880],{},"keep"," to force-retain specific events regardless of head sampling:",[659,2883,2885],{"className":741,"code":2884,"filename":743,"language":744,"meta":665,"style":665},"app.use(evlog({\n  drain: createAxiomDrain(),\n  keep: (ctx) => {\n    if (ctx.duration && ctx.duration > 2000) ctx.shouldKeep = true\n  },\n}))\n",[591,2886,2887,2903,2915,2932,2976,2980],{"__ignoreMap":665},[669,2888,2889,2891,2893,2895,2897,2899,2901],{"class":671,"line":672},[669,2890,904],{"class":755},[669,2892,907],{"class":762},[669,2894,910],{"class":825},[669,2896,829],{"class":755},[669,2898,791],{"class":825},[669,2900,829],{"class":755},[669,2902,832],{"class":762},[669,2904,2905,2907,2909,2911,2913],{"class":671,"line":772},[669,2906,2577],{"class":838},[669,2908,842],{"class":762},[669,2910,2504],{"class":825},[669,2912,2584],{"class":755},[669,2914,2168],{"class":762},[669,2916,2917,2920,2922,2924,2926,2928,2930],{"class":671,"line":796},[669,2918,2919],{"class":825},"  keep",[669,2921,842],{"class":762},[669,2923,947],{"class":762},[669,2925,2598],{"class":950},[669,2927,959],{"class":762},[669,2929,962],{"class":880},[669,2931,965],{"class":762},[669,2933,2934,2937,2939,2941,2943,2946,2949,2952,2954,2956,2959,2962,2964,2966,2968,2971,2973],{"class":671,"line":815},[669,2935,2936],{"class":751},"    if",[669,2938,947],{"class":838},[669,2940,2598],{"class":755},[669,2942,907],{"class":762},[669,2944,2945],{"class":755},"duration",[669,2947,2948],{"class":762}," &&",[669,2950,2951],{"class":755}," ctx",[669,2953,907],{"class":762},[669,2955,2945],{"class":755},[669,2957,2958],{"class":762}," >",[669,2960,2961],{"class":1057}," 2000",[669,2963,1365],{"class":838},[669,2965,2598],{"class":755},[669,2967,907],{"class":762},[669,2969,2970],{"class":755},"shouldKeep",[669,2972,1148],{"class":762},[669,2974,2975],{"class":1025}," true\n",[669,2977,2978],{"class":671,"line":822},[669,2979,2650],{"class":762},[669,2981,2982,2984],{"class":671,"line":835},[669,2983,866],{"class":762},[669,2985,2657],{"class":755},[647,2987,2989],{"id":2988},"route-filtering","Route Filtering",[587,2991,2992,2993,1783,2996,2999],{},"Control which routes are logged with ",[591,2994,2995],{},"include",[591,2997,2998],{},"exclude"," patterns:",[659,3001,3003],{"className":741,"code":3002,"filename":743,"language":744,"meta":665,"style":665},"app.use(evlog({\n  include: ['\u002Fapi\u002F**'],\n  exclude: ['\u002F_internal\u002F**', '\u002Fhealth'],\n  routes: {\n    '\u002Fapi\u002Fauth\u002F**': { service: 'auth-service' },\n    '\u002Fapi\u002Fpayment\u002F**': { service: 'payment-service' },\n  },\n}))\n",[591,3004,3005,3021,3043,3071,3080,3107,3133,3137],{"__ignoreMap":665},[669,3006,3007,3009,3011,3013,3015,3017,3019],{"class":671,"line":672},[669,3008,904],{"class":755},[669,3010,907],{"class":762},[669,3012,910],{"class":825},[669,3014,829],{"class":755},[669,3016,791],{"class":825},[669,3018,829],{"class":755},[669,3020,832],{"class":762},[669,3022,3023,3026,3028,3031,3033,3036,3038,3041],{"class":671,"line":772},[669,3024,3025],{"class":838},"  include",[669,3027,842],{"class":762},[669,3029,3030],{"class":755}," 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