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Events are still built, sampled, and passed to drains",[724,826,827,832,836,840],{},[745,828,829],{},[431,830,831],{},"stringify",[745,833,834],{},[431,835,754],{},[745,837,838],{},[431,839,759],{},[745,841,842,843,845,846,848],{},"Emit JSON strings when ",[431,844,791],{}," is disabled. Set to ",[431,847,765],{}," for Cloudflare Workers",[724,850,851,856,861,866],{},[745,852,853],{},[431,854,855],{},"minLevel",[745,857,858],{},[431,859,860],{},"'debug' | 'info' | 'warn' | 'error'",[745,862,863],{},[431,864,865],{},"'debug'",[745,867,868,869,872,873,876],{},"Minimum severity for the global ",[431,870,871],{},"log"," API only (not ",[431,874,875],{},"createLogger"," \u002F request wide events). Order: debug \u003C info \u003C warn \u003C error",[724,878,879,884,889,894],{},[745,880,881],{},[431,882,883],{},"sampling",[745,885,886],{},[431,887,888],{},"SamplingConfig",[745,890,891],{},[431,892,893],{},"undefined",[745,895,896,897],{},"Head and tail sampling configuration. See ",[898,899,175],"a",{"href":176},[724,901,902,907,912,917],{},[745,903,904],{},[431,905,906],{},"redact",[745,908,909],{},[431,910,911],{},"boolean | RedactConfig",[745,913,914,916],{},[431,915,759],{}," in production",[745,918,919,920,922,923],{},"Enabled by default in production. ",[431,921,765],{}," to disable. Object for fine-grained control. See ",[898,924,197],{"href":198},[724,926,927,932,937,941],{},[745,928,929],{},[431,930,931],{},"drain",[745,933,934],{},[431,935,936],{},"(ctx: DrainContext) => void",[745,938,939],{},[431,940,893],{},[745,942,943],{},"Drain callback for sending events to external services",[945,946,948,950],"h3",{"id":947},"minlevel-vs-sampling",[431,949,855],{}," vs sampling",[952,953,954,992],"ul",{},[955,956,957,961,962,965,966,969,970,973,974,977,978,981,982,987,988,991],"li",{},[417,958,959],{},[431,960,855],{}," is a ",[417,963,964],{},"hard threshold"," on the simple ",[431,967,968],{},"log.*"," API: levels below the threshold are never emitted. It does ",[417,971,972],{},"not"," apply to wide events from ",[431,975,976],{},"useLogger"," \u002F ",[431,979,980],{},"createLogger().emit()"," — use ",[417,983,984],{},[431,985,986],{},"sampling.rates"," (and tail ",[431,989,990],{},"keep",") for request volume.",[955,993,994,997,998,1000,1001,1004,1005,1007],{},[417,995,996],{},"Head sampling"," (",[431,999,986],{},") is ",[417,1002,1003],{},"probabilistic"," on what is already allowed by ",[431,1006,855],{}," for simple logs.",[413,1009,1010,1011,977,1014,1017,1018,1020,1021,1023],{},"Evaluation order for ",[431,1012,1013],{},"log.info",[431,1015,1016],{},"log.debug"," \u002F etc.: ",[431,1019,749],{}," → ",[431,1022,855],{}," → head sampling → output.",[945,1025,1027],{"id":1026},"environment-context","Environment Context",[413,1029,1030,1031,1033,1034,1037],{},"The ",[431,1032,773],{}," option controls the fields included in every log event. Most values are auto-detected from environment variables and ",[431,1035,1036],{},"package.json",".",[718,1039,1040,1054],{},[721,1041,1042],{},[724,1043,1044,1047,1049,1051],{},[727,1045,1046],{},"Field",[727,1048,732],{},[727,1050,735],{},[727,1052,1053],{},"Auto-detected from",[740,1055,1056,1082,1102,1125,1151],{},[724,1057,1058,1063,1068,1073],{},[745,1059,1060],{},[431,1061,1062],{},"service",[745,1064,1065],{},[431,1066,1067],{},"string",[745,1069,1070],{},[431,1071,1072],{},"'app'",[745,1074,1075,1078,1079,1081],{},[431,1076,1077],{},"SERVICE_NAME",", ",[431,1080,1036],{}," name",[724,1083,1084,1089,1093,1098],{},[745,1085,1086],{},[431,1087,1088],{},"environment",[745,1090,1091],{},[431,1092,1067],{},[745,1094,1095],{},[431,1096,1097],{},"'development'",[745,1099,1100],{},[431,1101,806],{},[724,1103,1104,1109,1113,1117],{},[745,1105,1106],{},[431,1107,1108],{},"version",[745,1110,1111],{},[431,1112,1067],{},[745,1114,1115],{},[431,1116,893],{},[745,1118,1119,1078,1122,1124],{},[431,1120,1121],{},"APP_VERSION",[431,1123,1036],{}," version",[724,1126,1127,1132,1136,1140],{},[745,1128,1129],{},[431,1130,1131],{},"commitHash",[745,1133,1134],{},[431,1135,1067],{},[745,1137,1138],{},[431,1139,893],{},[745,1141,1142,1078,1145,1078,1148],{},[431,1143,1144],{},"COMMIT_SHA",[431,1146,1147],{},"GIT_COMMIT",[431,1149,1150],{},"VERCEL_GIT_COMMIT_SHA",[724,1152,1153,1158,1162,1166],{},[745,1154,1155],{},[431,1156,1157],{},"region",[745,1159,1160],{},[431,1161,1067],{},[745,1163,1164],{},[431,1165,893],{},[745,1167,1168,1078,1171,1078,1174],{},[431,1169,1170],{},"FLY_REGION",[431,1172,1173],{},"AWS_REGION",[431,1175,1176],{},"VERCEL_REGION",[945,1178,1180],{"id":1179},"silent-mode","Silent Mode",[413,1182,1183,1184,1186],{},"Use ",[431,1185,813],{}," when your deployment platform captures stdout as its primary log ingestion (GCP Cloud Run, AWS Lambda, Fly.io, Railway, etc.) and you want a drain adapter to control the output format.",[443,1188,1190],{"className":445,"code":1189,"filename":447,"language":448,"meta":449,"style":449},"import { initLogger } from 'evlog'\nimport { createAxiomDrain } from 'evlog\u002Faxiom'\n\ninitLogger({\n  silent: process.env.NODE_ENV === 'production',\n  drain: createAxiomDrain(),\n})\n",[431,1191,1192,1210,1228,1232,1240,1269,1281],{"__ignoreMap":449},[453,1193,1194,1196,1198,1200,1202,1204,1206,1208],{"class":455,"line":456},[453,1195,460],{"class":459},[453,1197,464],{"class":463},[453,1199,468],{"class":467},[453,1201,471],{"class":463},[453,1203,474],{"class":459},[453,1205,477],{"class":463},[453,1207,481],{"class":480},[453,1209,484],{"class":463},[453,1211,1212,1214,1216,1218,1220,1222,1224,1226],{"class":455,"line":487},[453,1213,460],{"class":459},[453,1215,464],{"class":463},[453,1217,494],{"class":467},[453,1219,471],{"class":463},[453,1221,474],{"class":459},[453,1223,477],{"class":463},[453,1225,503],{"class":480},[453,1227,484],{"class":463},[453,1229,1230],{"class":455,"line":508},[453,1231,512],{"emptyLinePlaceholder":511},[453,1233,1234,1236,1238],{"class":455,"line":515},[453,1235,433],{"class":518},[453,1237,521],{"class":467},[453,1239,524],{"class":463},[453,1241,1242,1244,1246,1249,1251,1253,1255,1258,1261,1263,1265,1267],{"class":455,"line":527},[453,1243,601],{"class":530},[453,1245,534],{"class":463},[453,1247,1248],{"class":467}," process",[453,1250,1037],{"class":463},[453,1252,773],{"class":467},[453,1254,1037],{"class":463},[453,1256,1257],{"class":467},"NODE_ENV ",[453,1259,1260],{"class":463},"===",[453,1262,477],{"class":463},[453,1264,577],{"class":480},[453,1266,564],{"class":463},[453,1268,541],{"class":463},[453,1270,1271,1273,1275,1277,1279],{"class":455,"line":544},[453,1272,698],{"class":530},[453,1274,534],{"class":463},[453,1276,494],{"class":518},[453,1278,705],{"class":467},[453,1280,541],{"class":463},[453,1282,1283,1285],{"class":455,"line":585},[453,1284,713],{"class":463},[453,1286,716],{"class":467},[1288,1289,1292,1293,1295],"callout",{"color":1290,"icon":1291},"warning","i-lucide-alert-triangle","If ",[431,1294,813],{}," is enabled without a drain, events are built and sampled but never output anywhere. evlog will warn you about this at startup.",[426,1297,1299],{"id":1298},"middleware-options","Middleware Options",[413,1301,1302],{},"These options are passed to the framework middleware\u002Fplugin. They control per-request behavior: which routes to log, how to drain and enrich events, and custom tail sampling logic.",[1304,1305,1306,1606,1800,1897],"code-group",{},[443,1307,1309],{"className":445,"code":1308,"filename":216,"language":448,"meta":449,"style":449},"\u002F\u002F lib\u002Fevlog.ts\nimport { createEvlog } from 'evlog\u002Fnext'\nimport { createAxiomDrain } from 'evlog\u002Faxiom'\n\nexport const { withEvlog, useLogger, log, createError } = createEvlog({\n  service: 'my-app',\n  include: ['\u002Fapi\u002F**'],\n  exclude: ['\u002Fapi\u002Fhealth'],\n  routes: { '\u002Fapi\u002Fauth\u002F**': { service: 'auth' } },\n  drain: createAxiomDrain(),\n  enrich: (ctx) => { ctx.event.region = process.env.FLY_REGION },\n  keep: (ctx) => { if (ctx.duration > 2000) ctx.shouldKeep = true },\n})\n",[431,1310,1311,1317,1337,1355,1359,1399,1415,1436,1456,1491,1503,1549,1600],{"__ignoreMap":449},[453,1312,1313],{"class":455,"line":456},[453,1314,1316],{"class":1315},"sHwdD","\u002F\u002F lib\u002Fevlog.ts\n",[453,1318,1319,1321,1323,1326,1328,1330,1332,1335],{"class":455,"line":487},[453,1320,460],{"class":459},[453,1322,464],{"class":463},[453,1324,1325],{"class":467}," createEvlog",[453,1327,471],{"class":463},[453,1329,474],{"class":459},[453,1331,477],{"class":463},[453,1333,1334],{"class":480},"evlog\u002Fnext",[453,1336,484],{"class":463},[453,1338,1339,1341,1343,1345,1347,1349,1351,1353],{"class":455,"line":508},[453,1340,460],{"class":459},[453,1342,464],{"class":463},[453,1344,494],{"class":467},[453,1346,471],{"class":463},[453,1348,474],{"class":459},[453,1350,477],{"class":463},[453,1352,503],{"class":480},[453,1354,484],{"class":463},[453,1356,1357],{"class":455,"line":515},[453,1358,512],{"emptyLinePlaceholder":511},[453,1360,1361,1364,1368,1370,1373,1375,1378,1380,1383,1385,1388,1390,1393,1395,1397],{"class":455,"line":527},[453,1362,1363],{"class":459},"export",[453,1365,1367],{"class":1366},"spNyl"," const",[453,1369,464],{"class":463},[453,1371,1372],{"class":467}," withEvlog",[453,1374,567],{"class":463},[453,1376,1377],{"class":467}," useLogger",[453,1379,567],{"class":463},[453,1381,1382],{"class":467}," log",[453,1384,567],{"class":463},[453,1386,1387],{"class":467}," createError ",[453,1389,713],{"class":463},[453,1391,1392],{"class":463}," =",[453,1394,1325],{"class":518},[453,1396,521],{"class":467},[453,1398,524],{"class":463},[453,1400,1401,1404,1406,1408,1411,1413],{"class":455,"line":544},[453,1402,1403],{"class":530},"  service",[453,1405,534],{"class":463},[453,1407,477],{"class":463},[453,1409,1410],{"class":480},"my-app",[453,1412,564],{"class":463},[453,1414,541],{"class":463},[453,1416,1417,1420,1422,1424,1426,1429,1431,1434],{"class":455,"line":585},[453,1418,1419],{"class":530},"  include",[453,1421,534],{"class":463},[453,1423,673],{"class":467},[453,1425,564],{"class":463},[453,1427,1428],{"class":480},"\u002Fapi\u002F**",[453,1430,564],{"class":463},[453,1432,1433],{"class":467},"]",[453,1435,541],{"class":463},[453,1437,1438,1441,1443,1445,1447,1450,1452,1454],{"class":455,"line":598},[453,1439,1440],{"class":530},"  exclude",[453,1442,534],{"class":463},[453,1444,673],{"class":467},[453,1446,564],{"class":463},[453,1448,1449],{"class":480},"\u002Fapi\u002Fhealth",[453,1451,564],{"class":463},[453,1453,1433],{"class":467},[453,1455,541],{"class":463},[453,1457,1458,1461,1463,1465,1467,1470,1472,1474,1476,1478,1480,1482,1485,1487,1489],{"class":455,"line":610},[453,1459,1460],{"class":530},"  routes",[453,1462,534],{"class":463},[453,1464,464],{"class":463},[453,1466,477],{"class":463},[453,1468,1469],{"class":530},"\u002Fapi\u002Fauth\u002F**",[453,1471,564],{"class":463},[453,1473,534],{"class":463},[453,1475,464],{"class":463},[453,1477,554],{"class":530},[453,1479,534],{"class":463},[453,1481,477],{"class":463},[453,1483,1484],{"class":480},"auth",[453,1486,564],{"class":463},[453,1488,471],{"class":463},[453,1490,582],{"class":463},[453,1492,1493,1495,1497,1499,1501],{"class":455,"line":622},[453,1494,698],{"class":530},[453,1496,534],{"class":463},[453,1498,494],{"class":518},[453,1500,705],{"class":467},[453,1502,541],{"class":463},[453,1504,1505,1508,1510,1512,1516,1518,1521,1523,1526,1528,1531,1533,1535,1537,1539,1541,1543,1545,1547],{"class":455,"line":639},[453,1506,1507],{"class":518},"  enrich",[453,1509,534],{"class":463},[453,1511,997],{"class":463},[453,1513,1515],{"class":1514},"sHdIc","ctx",[453,1517,434],{"class":463},[453,1519,1520],{"class":1366}," =>",[453,1522,464],{"class":463},[453,1524,1525],{"class":467}," ctx",[453,1527,1037],{"class":463},[453,1529,1530],{"class":467},"event",[453,1532,1037],{"class":463},[453,1534,1157],{"class":467},[453,1536,1392],{"class":463},[453,1538,1248],{"class":467},[453,1540,1037],{"class":463},[453,1542,773],{"class":467},[453,1544,1037],{"class":463},[453,1546,1170],{"class":467},[453,1548,582],{"class":463},[453,1550,1551,1554,1556,1558,1560,1562,1564,1566,1569,1571,1573,1575,1578,1581,1584,1587,1589,1591,1594,1596,1598],{"class":455,"line":695},[453,1552,1553],{"class":518},"  keep",[453,1555,534],{"class":463},[453,1557,997],{"class":463},[453,1559,1515],{"class":1514},[453,1561,434],{"class":463},[453,1563,1520],{"class":1366},[453,1565,464],{"class":463},[453,1567,1568],{"class":459}," if",[453,1570,997],{"class":530},[453,1572,1515],{"class":467},[453,1574,1037],{"class":463},[453,1576,1577],{"class":467},"duration",[453,1579,1580],{"class":463}," >",[453,1582,1583],{"class":661}," 2000",[453,1585,1586],{"class":530},") ",[453,1588,1515],{"class":467},[453,1590,1037],{"class":463},[453,1592,1593],{"class":467},"shouldKeep",[453,1595,1392],{"class":463},[453,1597,538],{"class":537},[453,1599,582],{"class":463},[453,1601,1602,1604],{"class":455,"line":710},[453,1603,713],{"class":463},[453,1605,716],{"class":467},[443,1607,1609],{"className":445,"code":1608,"filename":246,"language":448,"meta":449,"style":449},"app.use(evlog({\n  include: ['\u002Fapi\u002F**'],\n  exclude: ['\u002Fapi\u002Fhealth'],\n  routes: { '\u002Fapi\u002Fauth\u002F**': { service: 'auth' } },\n  drain: createAxiomDrain(),\n  enrich: (ctx) => { ctx.event.region = process.env.FLY_REGION },\n  keep: (ctx) => { if (ctx.duration > 2000) ctx.shouldKeep = true },\n}))\n",[431,1610,1611,1629,1647,1665,1697,1709,1749,1793],{"__ignoreMap":449},[453,1612,1613,1616,1618,1621,1623,1625,1627],{"class":455,"line":456},[453,1614,1615],{"class":467},"app",[453,1617,1037],{"class":463},[453,1619,1620],{"class":518},"use",[453,1622,521],{"class":467},[453,1624,481],{"class":518},[453,1626,521],{"class":467},[453,1628,524],{"class":463},[453,1630,1631,1633,1635,1637,1639,1641,1643,1645],{"class":455,"line":487},[453,1632,1419],{"class":530},[453,1634,534],{"class":463},[453,1636,673],{"class":467},[453,1638,564],{"class":463},[453,1640,1428],{"class":480},[453,1642,564],{"class":463},[453,1644,1433],{"class":467},[453,1646,541],{"class":463},[453,1648,1649,1651,1653,1655,1657,1659,1661,1663],{"class":455,"line":508},[453,1650,1440],{"class":530},[453,1652,534],{"class":463},[453,1654,673],{"class":467},[453,1656,564],{"class":463},[453,1658,1449],{"class":480},[453,1660,564],{"class":463},[453,1662,1433],{"class":467},[453,1664,541],{"class":463},[453,1666,1667,1669,1671,1673,1675,1677,1679,1681,1683,1685,1687,1689,1691,1693,1695],{"class":455,"line":515},[453,1668,1460],{"class":530},[453,1670,534],{"class":463},[453,1672,464],{"class":463},[453,1674,477],{"class":463},[453,1676,1469],{"class":530},[453,1678,564],{"class":463},[453,1680,534],{"class":463},[453,1682,464],{"class":463},[453,1684,554],{"class":530},[453,1686,534],{"class":463},[453,1688,477],{"class":463},[453,1690,1484],{"class":480},[453,1692,564],{"class":463},[453,1694,471],{"class":463},[453,1696,582],{"class":463},[453,1698,1699,1701,1703,1705,1707],{"class":455,"line":527},[453,1700,698],{"class":530},[453,1702,534],{"class":463},[453,1704,494],{"class":518},[453,1706,705],{"class":467},[453,1708,541],{"class":463},[453,1710,1711,1713,1715,1717,1719,1721,1723,1725,1727,1729,1731,1733,1735,1737,1739,1741,1743,1745,1747],{"class":455,"line":544},[453,1712,1507],{"class":518},[453,1714,534],{"class":463},[453,1716,997],{"class":463},[453,1718,1515],{"class":1514},[453,1720,434],{"class":463},[453,1722,1520],{"class":1366},[453,1724,464],{"class":463},[453,1726,1525],{"class":467},[453,1728,1037],{"class":463},[453,1730,1530],{"class":467},[453,1732,1037],{"class":463},[453,1734,1157],{"class":467},[453,1736,1392],{"class":463},[453,1738,1248],{"class":467},[453,1740,1037],{"class":463},[453,1742,773],{"class":467},[453,1744,1037],{"class":463},[453,1746,1170],{"class":467},[453,1748,582],{"class":463},[453,1750,1751,1753,1755,1757,1759,1761,1763,1765,1767,1769,1771,1773,1775,1777,1779,1781,1783,1785,1787,1789,1791],{"class":455,"line":585},[453,1752,1553],{"class":518},[453,1754,534],{"class":463},[453,1756,997],{"class":463},[453,1758,1515],{"class":1514},[453,1760,434],{"class":463},[453,1762,1520],{"class":1366},[453,1764,464],{"class":463},[453,1766,1568],{"class":459},[453,1768,997],{"class":530},[453,1770,1515],{"class":467},[453,1772,1037],{"class":463},[453,1774,1577],{"class":467},[453,1776,1580],{"class":463},[453,1778,1583],{"class":661},[453,1780,1586],{"class":530},[453,1782,1515],{"class":467},[453,1784,1037],{"class":463},[453,1786,1593],{"class":467},[453,1788,1392],{"class":463},[453,1790,538],{"class":537},[453,1792,582],{"class":463},[453,1794,1795,1797],{"class":455,"line":598},[453,1796,713],{"class":463},[453,1798,1799],{"class":467},"))\n",[443,1801,1803],{"className":445,"code":1802,"filename":241,"language":448,"meta":449,"style":449},"app.use(evlog({\n  include: ['\u002Fapi\u002F**'],\n  drain: createAxiomDrain(),\n  enrich: (ctx) => { ctx.event.region = process.env.FLY_REGION },\n}))\n",[431,1804,1805,1821,1839,1851,1891],{"__ignoreMap":449},[453,1806,1807,1809,1811,1813,1815,1817,1819],{"class":455,"line":456},[453,1808,1615],{"class":467},[453,1810,1037],{"class":463},[453,1812,1620],{"class":518},[453,1814,521],{"class":467},[453,1816,481],{"class":518},[453,1818,521],{"class":467},[453,1820,524],{"class":463},[453,1822,1823,1825,1827,1829,1831,1833,1835,1837],{"class":455,"line":487},[453,1824,1419],{"class":530},[453,1826,534],{"class":463},[453,1828,673],{"class":467},[453,1830,564],{"class":463},[453,1832,1428],{"class":480},[453,1834,564],{"class":463},[453,1836,1433],{"class":467},[453,1838,541],{"class":463},[453,1840,1841,1843,1845,1847,1849],{"class":455,"line":508},[453,1842,698],{"class":530},[453,1844,534],{"class":463},[453,1846,494],{"class":518},[453,1848,705],{"class":467},[453,1850,541],{"class":463},[453,1852,1853,1855,1857,1859,1861,1863,1865,1867,1869,1871,1873,1875,1877,1879,1881,1883,1885,1887,1889],{"class":455,"line":515},[453,1854,1507],{"class":518},[453,1856,534],{"class":463},[453,1858,997],{"class":463},[453,1860,1515],{"class":1514},[453,1862,434],{"class":463},[453,1864,1520],{"class":1366},[453,1866,464],{"class":463},[453,1868,1525],{"class":467},[453,1870,1037],{"class":463},[453,1872,1530],{"class":467},[453,1874,1037],{"class":463},[453,1876,1157],{"class":467},[453,1878,1392],{"class":463},[453,1880,1248],{"class":467},[453,1882,1037],{"class":463},[453,1884,773],{"class":467},[453,1886,1037],{"class":463},[453,1888,1170],{"class":467},[453,1890,582],{"class":463},[453,1892,1893,1895],{"class":455,"line":527},[453,1894,713],{"class":463},[453,1896,1799],{"class":467},[443,1898,1900],{"className":445,"code":1899,"filename":251,"language":448,"meta":449,"style":449},"await app.register(evlog, {\n  include: ['\u002Fapi\u002F**'],\n  drain: createAxiomDrain(),\n})\n",[431,1901,1902,1923,1941,1953],{"__ignoreMap":449},[453,1903,1904,1907,1910,1912,1915,1918,1920],{"class":455,"line":456},[453,1905,1906],{"class":459},"await",[453,1908,1909],{"class":467}," app",[453,1911,1037],{"class":463},[453,1913,1914],{"class":518},"register",[453,1916,1917],{"class":467},"(evlog",[453,1919,567],{"class":463},[453,1921,1922],{"class":463}," {\n",[453,1924,1925,1927,1929,1931,1933,1935,1937,1939],{"class":455,"line":487},[453,1926,1419],{"class":530},[453,1928,534],{"class":463},[453,1930,673],{"class":467},[453,1932,564],{"class":463},[453,1934,1428],{"class":480},[453,1936,564],{"class":463},[453,1938,1433],{"class":467},[453,1940,541],{"class":463},[453,1942,1943,1945,1947,1949,1951],{"class":455,"line":508},[453,1944,698],{"class":530},[453,1946,534],{"class":463},[453,1948,494],{"class":518},[453,1950,705],{"class":467},[453,1952,541],{"class":463},[453,1954,1955,1957],{"class":455,"line":515},[453,1956,713],{"class":463},[453,1958,716],{"class":467},[718,1960,1961,1973],{},[721,1962,1963],{},[724,1964,1965,1967,1969,1971],{},[727,1966,729],{},[727,1968,732],{},[727,1970,735],{},[727,1972,738],{},[740,1974,1975,1994,2012,2031,2048,2067],{},[724,1976,1977,1982,1987,1991],{},[745,1978,1979],{},[431,1980,1981],{},"include",[745,1983,1984],{},[431,1985,1986],{},"string[]",[745,1988,1989],{},[431,1990,893],{},[745,1992,1993],{},"Route glob patterns to log. If not set, all routes are logged",[724,1995,1996,2001,2005,2009],{},[745,1997,1998],{},[431,1999,2000],{},"exclude",[745,2002,2003],{},[431,2004,1986],{},[745,2006,2007],{},[431,2008,893],{},[745,2010,2011],{},"Route patterns to exclude. Exclusions take precedence over inclusions",[724,2013,2014,2019,2024,2028],{},[745,2015,2016],{},[431,2017,2018],{},"routes",[745,2020,2021],{},[431,2022,2023],{},"Record\u003Cstring, { service: string }>",[745,2025,2026],{},[431,2027,893],{},[745,2029,2030],{},"Route-specific service name overrides",[724,2032,2033,2037,2041,2045],{},[745,2034,2035],{},[431,2036,931],{},[745,2038,2039],{},[431,2040,936],{},[745,2042,2043],{},[431,2044,893],{},[745,2046,2047],{},"Drain callback called with every emitted event",[724,2049,2050,2055,2060,2064],{},[745,2051,2052],{},[431,2053,2054],{},"enrich",[745,2056,2057],{},[431,2058,2059],{},"(ctx: EnrichContext) => void",[745,2061,2062],{},[431,2063,893],{},[745,2065,2066],{},"Enrich callback called after emit, before drain",[724,2068,2069,2073,2078,2082],{},[745,2070,2071],{},[431,2072,990],{},[745,2074,2075],{},[431,2076,2077],{},"(ctx: TailSamplingContext) => void",[745,2079,2080],{},[431,2081,893],{},[745,2083,2084],{},"Custom tail sampling callback",[1288,2086,2087,2090,2091,1078,2094,1078,2097,2100,2101,2103,2104,2106],{"color":632,"icon":13},[417,2088,2089],{},"Nuxt and Nitro"," use module config and Nitro hooks (",[431,2092,2093],{},"evlog:drain",[431,2095,2096],{},"evlog:enrich",[431,2098,2099],{},"evlog:emit:keep",") instead of middleware options. See the ",[898,2102,211],{"href":212}," and ",[898,2105,226],{"href":227}," pages.",[945,2108,2110],{"id":2109},"middleware-drain-vs-global-drain","Middleware drain vs global drain",[413,2112,2113,2114,2116,2117,2119],{},"When a middleware ",[431,2115,931],{}," is set, it takes precedence over the global drain from ",[431,2118,440],{},". If no middleware drain is set, the global drain is used as fallback, with the benefit of receiving the full enriched event with request context (method, path, headers).",[443,2121,2123],{"className":445,"code":2122,"filename":447,"language":448,"meta":449,"style":449},"import { initLogger } from 'evlog'\nimport { createAxiomDrain } from 'evlog\u002Faxiom'\n\ninitLogger({\n  env: { service: 'my-api' },\n  drain: createAxiomDrain(), \u002F\u002F fallback: used by singleton log API AND middleware (if no middleware drain)\n})\n\napp.use(evlog({\n  \u002F\u002F no drain here - falls back to globalDrain from initLogger, with full request context\n}))\n",[431,2124,2125,2143,2161,2165,2173,2193,2208,2214,2218,2234,2239],{"__ignoreMap":449},[453,2126,2127,2129,2131,2133,2135,2137,2139,2141],{"class":455,"line":456},[453,2128,460],{"class":459},[453,2130,464],{"class":463},[453,2132,468],{"class":467},[453,2134,471],{"class":463},[453,2136,474],{"class":459},[453,2138,477],{"class":463},[453,2140,481],{"class":480},[453,2142,484],{"class":463},[453,2144,2145,2147,2149,2151,2153,2155,2157,2159],{"class":455,"line":487},[453,2146,460],{"class":459},[453,2148,464],{"class":463},[453,2150,494],{"class":467},[453,2152,471],{"class":463},[453,2154,474],{"class":459},[453,2156,477],{"class":463},[453,2158,503],{"class":480},[453,2160,484],{"class":463},[453,2162,2163],{"class":455,"line":508},[453,2164,512],{"emptyLinePlaceholder":511},[453,2166,2167,2169,2171],{"class":455,"line":515},[453,2168,433],{"class":518},[453,2170,521],{"class":467},[453,2172,524],{"class":463},[453,2174,2175,2177,2179,2181,2183,2185,2187,2189,2191],{"class":455,"line":527},[453,2176,547],{"class":530},[453,2178,534],{"class":463},[453,2180,464],{"class":463},[453,2182,554],{"class":530},[453,2184,534],{"class":463},[453,2186,477],{"class":463},[453,2188,561],{"class":480},[453,2190,564],{"class":463},[453,2192,582],{"class":463},[453,2194,2195,2197,2199,2201,2203,2205],{"class":455,"line":544},[453,2196,698],{"class":530},[453,2198,534],{"class":463},[453,2200,494],{"class":518},[453,2202,705],{"class":467},[453,2204,567],{"class":463},[453,2206,2207],{"class":1315}," \u002F\u002F fallback: used by singleton log API AND middleware (if no middleware drain)\n",[453,2209,2210,2212],{"class":455,"line":585},[453,2211,713],{"class":463},[453,2213,716],{"class":467},[453,2215,2216],{"class":455,"line":598},[453,2217,512],{"emptyLinePlaceholder":511},[453,2219,2220,2222,2224,2226,2228,2230,2232],{"class":455,"line":610},[453,2221,1615],{"class":467},[453,2223,1037],{"class":463},[453,2225,1620],{"class":518},[453,2227,521],{"class":467},[453,2229,481],{"class":518},[453,2231,521],{"class":467},[453,2233,524],{"class":463},[453,2235,2236],{"class":455,"line":622},[453,2237,2238],{"class":1315},"  \u002F\u002F no drain here - falls back to globalDrain from initLogger, with full request context\n",[453,2240,2241,2243],{"class":455,"line":639},[453,2242,713],{"class":463},[453,2244,1799],{"class":467},[426,2246,2248],{"id":2247},"framework-specific-options","Framework-Specific Options",[413,2250,2251],{},"Some frameworks have additional options beyond the shared config:",[945,2253,211],{"id":2254},"nuxt",[413,2256,2257,2258,2261,2262,2264],{},"The Nuxt module accepts all global options and middleware options in ",[431,2259,2260],{},"nuxt.config.ts"," under the ",[431,2263,481],{}," key, plus:",[718,2266,2267,2279],{},[721,2268,2269],{},[724,2270,2271,2273,2275,2277],{},[727,2272,729],{},[727,2274,732],{},[727,2276,735],{},[727,2278,738],{},[740,2280,2281,2299,2317,2336],{},[724,2282,2283,2288,2292,2296],{},[745,2284,2285],{},[431,2286,2287],{},"console",[745,2289,2290],{},[431,2291,754],{},[745,2293,2294],{},[431,2295,759],{},[745,2297,2298],{},"Enable\u002Fdisable browser console output (client-side only)",[724,2300,2301,2306,2310,2314],{},[745,2302,2303],{},[431,2304,2305],{},"transport.enabled",[745,2307,2308],{},[431,2309,754],{},[745,2311,2312],{},[431,2313,765],{},[745,2315,2316],{},"Send client logs to the server via API endpoint",[724,2318,2319,2324,2328,2333],{},[745,2320,2321],{},[431,2322,2323],{},"transport.endpoint",[745,2325,2326],{},[431,2327,1067],{},[745,2329,2330],{},[431,2331,2332],{},"'\u002Fapi\u002F_evlog\u002Fingest'",[745,2334,2335],{},"Custom transport endpoint",[724,2337,2338,2343,2348,2353],{},[745,2339,2340],{},[431,2341,2342],{},"transport.credentials",[745,2344,2345],{},[431,2346,2347],{},"RequestCredentials",[745,2349,2350],{},[431,2351,2352],{},"'same-origin'",[745,2354,2355,2356,2359],{},"Fetch credentials mode (",[431,2357,2358],{},"'include'"," for cross-origin endpoints)",[413,2361,2362,2363,1037],{},"See the full ",[898,2364,2366],{"href":2365},"\u002Fframeworks\u002Fnuxt#configuration","Nuxt configuration",[945,2368,226],{"id":2369},"nitro",[413,2371,2372,2373,1078,2375,1078,2377,1078,2379,1078,2381,1078,2383,1078,2385,2387,2388,2390,2391,2394],{},"The Nitro module accepts ",[431,2374,749],{},[431,2376,773],{},[431,2378,791],{},[431,2380,813],{},[431,2382,883],{},[431,2384,1981],{},[431,2386,2000],{},", and ",[431,2389,2018],{}," in ",[431,2392,2393],{},"nitro.config.ts",". Drain and enrichment are done via Nitro hooks.",[413,2396,2397,2398,1037],{},"See ",[898,2399,2401],{"href":2400},"\u002Fframeworks\u002Fnitro#drain--enrichers","Nitro drain & enrichers",[2403,2404,2405],"style",{},"html pre.shiki code .s7zQu, html code.shiki .s7zQu{--shiki-light:#39ADB5;--shiki-light-font-style:italic;--shiki-default:#89DDFF;--shiki-default-font-style:italic;--shiki-dark:#89DDFF;--shiki-dark-font-style:italic}html pre.shiki code .sMK4o, html code.shiki .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sTEyZ, html code.shiki .sTEyZ{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html pre.shiki code .s2Zo4, html code.shiki .s2Zo4{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .sfNiH, html code.shiki .sfNiH{--shiki-light:#FF5370;--shiki-default:#FF9CAC;--shiki-dark:#FF9CAC}html pre.shiki code .sbssI, html code.shiki .sbssI{--shiki-light:#F76D47;--shiki-default:#F78C6C;--shiki-dark:#F78C6C}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .sHwdD, html code.shiki .sHwdD{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#546E7A;--shiki-default-font-style:italic;--shiki-dark:#676E95;--shiki-dark-font-style:italic}html pre.shiki code .spNyl, html code.shiki .spNyl{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .sHdIc, html code.shiki .sHdIc{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#EEFFFF;--shiki-default-font-style:italic;--shiki-dark:#BABED8;--shiki-dark-font-style:italic}",{"title":449,"searchDepth":487,"depth":487,"links":2407},[2408,2415,2418],{"id":428,"depth":487,"text":2409,"children":2410},"Global Options (initLogger)",[2411,2413,2414],{"id":947,"depth":508,"text":2412},"minLevel vs sampling",{"id":1026,"depth":508,"text":1027},{"id":1179,"depth":508,"text":1180},{"id":1298,"depth":487,"text":1299,"children":2416},[2417],{"id":2109,"depth":508,"text":2110},{"id":2247,"depth":487,"text":2248,"children":2419},[2420,2421],{"id":2254,"depth":508,"text":211},{"id":2369,"depth":508,"text":226},"Complete reference for all evlog configuration options including global logger settings, middleware options, environment context, and framework-specific overrides.","md",[2425,2428],{"label":175,"icon":178,"to":176,"color":2426,"variant":2427},"neutral","subtle",{"label":2429,"icon":93,"to":310,"color":2426,"variant":2427},"Drain Adapters",{},{"icon":173},{"title":170,"description":2422},"zQJYXD22Tmkw_b4qCh8Ma2ztDhtu7OXPvcD-6PqFTws",[2435,2437],{"title":165,"path":166,"stem":167,"description":2436,"icon":168,"children":-1},"Understand the full lifecycle of an evlog event, from creation to drain. Covers all three modes (simple logging, wide events, request logging), sampling, enrichment, and delivery.",{"title":175,"path":176,"stem":177,"description":2438,"icon":178,"children":-1},"Control log volume with two-tier sampling. Head sampling drops noise by level, tail sampling rescues critical events based on outcome. Never miss errors, slow requests, or critical paths.",1778327039842]