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OpenTelemetry","\u002Fcompare\u002Fopentelemetry","8.compare\u002F2.opentelemetry",{"title":591,"path":592,"stem":593,"icon":567},"evlog vs LogTape","\u002Fcompare\u002Flogtape","8.compare\u002F3.logtape",{"title":595,"path":596,"stem":597,"icon":567},"evlog vs Winston: formats and request events","\u002Fcompare\u002Fwinston","8.compare\u002F4.winston",{"title":599,"path":600,"stem":601,"icon":567},"evlog vs Consola: reporters and request context","\u002Fcompare\u002Fconsola","8.compare\u002F5.consola",{"id":603,"title":604,"body":605,"description":1846,"extension":1847,"links":1848,"meta":1853,"navigation":1854,"path":42,"seo":1855,"stem":43,"__hash__":1856},"docs\u002F2.learn\u002F0.overview.md","Learn evlog",{"type":606,"value":607,"toc":1831},"minimark",[608,617,620,625,638,643,677,681,690,693,835,846,849,1115,1133,1137,1144,1300,1318,1322,1436,1440,1663,1671,1675,1678,1739,1743,1746,1815,1827],[609,610,611,612,616],"p",{},"This section is the ",[613,614,615],"strong",{},"mental model"," of evlog. By the end, you'll know exactly what evlog does, when each API fits, and how an event flows from your code to your drain.",[609,618,619],{},"If you're new, read it in order. If you've already shipped with evlog, jump to the page that matches your question.",[621,622,624],"callout",{"color":623,"icon":13},"info","All three modes coexist in the same logger. Pick per call. There is no upgrade path, no advanced mode, no toggle to flip. Same drains, same redaction, same types underneath.",[621,626,629,630,634,635,637],{"color":627,"icon":628},"neutral","i-lucide-globe","Not running an HTTP framework? See ",[631,632,633],"a",{"href":301},"Standalone TypeScript"," and ",[631,636,295],{"href":296},".",[639,640,642],"h2",{"id":641},"the-three-logging-modes","The three logging modes",[644,645,646,669,672],"card-group",{},[647,648,649,650,654,655,658,659,658,662,658,665,668],"card",{"color":627,"icon":49,"title":46,"to":47},"A fully-featured general-purpose logger. Replaces ",[651,652,653],"code",{},"console.log",", consola, pino, or winston with ",[651,656,657],{},"log.info",", ",[651,660,661],{},"log.error",[651,663,664],{},"log.warn",[651,666,667],{},"log.debug",", with the same level filtering, drain pipeline, redaction, and pretty\u002FJSON output.",[647,670,671],{"color":627,"icon":54,"title":51,"to":52},"Accumulate context over a unit of work (a script, job, queue task, or request) then emit a single comprehensive event.",[647,673,676],{"color":627,"icon":674,"title":675,"to":236},"i-lucide-git-branch","Request Logging","Auto-managed wide events scoped to HTTP requests. Framework middleware creates the logger and emits it for you.",[639,678,680],{"id":679},"compare-the-three-at-a-glance","Compare the three at a glance",[682,683,685,686,689],"h3",{"id":684},"simple-logging-log","Simple Logging (",[651,687,688],{},"log",")",[609,691,692],{},"One event per call. No accumulation, no lifecycle management.",[694,695,701],"pre",{"className":696,"code":697,"filename":698,"language":699,"meta":700,"style":700},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { log } from 'evlog'\n\nlog.info('auth', 'User logged in')\nlog.error({ action: 'payment', error: 'card_declined', userId: 42 })\n","src\u002Findex.ts","typescript","",[651,702,703,736,743,777],{"__ignoreMap":700},[704,705,708,712,716,720,723,726,729,733],"span",{"class":706,"line":707},"line",1,[704,709,711],{"class":710},"s7zQu","import",[704,713,715],{"class":714},"sMK4o"," {",[704,717,719],{"class":718},"sTEyZ"," log",[704,721,722],{"class":714}," }",[704,724,725],{"class":710}," from",[704,727,728],{"class":714}," '",[704,730,732],{"class":731},"sfazB","evlog",[704,734,735],{"class":714},"'\n",[704,737,739],{"class":706,"line":738},2,[704,740,742],{"emptyLinePlaceholder":741},true,"\n",[704,744,746,748,750,753,756,759,762,764,767,769,772,774],{"class":706,"line":745},3,[704,747,688],{"class":718},[704,749,637],{"class":714},[704,751,623],{"class":752},"s2Zo4",[704,754,755],{"class":718},"(",[704,757,758],{"class":714},"'",[704,760,761],{"class":731},"auth",[704,763,758],{"class":714},[704,765,766],{"class":714},",",[704,768,728],{"class":714},[704,770,771],{"class":731},"User logged in",[704,773,758],{"class":714},[704,775,776],{"class":718},")\n",[704,778,780,782,784,787,789,792,796,799,801,804,806,808,811,813,815,818,820,822,825,827,831,833],{"class":706,"line":779},4,[704,781,688],{"class":718},[704,783,637],{"class":714},[704,785,786],{"class":752},"error",[704,788,755],{"class":718},[704,790,791],{"class":714},"{",[704,793,795],{"class":794},"swJcz"," action",[704,797,798],{"class":714},":",[704,800,728],{"class":714},[704,802,803],{"class":731},"payment",[704,805,758],{"class":714},[704,807,766],{"class":714},[704,809,810],{"class":794}," error",[704,812,798],{"class":714},[704,814,728],{"class":714},[704,816,817],{"class":731},"card_declined",[704,819,758],{"class":714},[704,821,766],{"class":714},[704,823,824],{"class":794}," userId",[704,826,798],{"class":714},[704,828,830],{"class":829},"sbssI"," 42",[704,832,722],{"class":714},[704,834,776],{"class":718},[682,836,838,839,842,843,689],{"id":837},"wide-events-createlogger-createrequestlogger","Wide Events (",[651,840,841],{},"createLogger"," \u002F ",[651,844,845],{},"createRequestLogger",[609,847,848],{},"One event per unit of work. Accumulate context progressively, emit when done.",[850,851,852,985],"code-group",{},[694,853,856],{"className":696,"code":854,"filename":855,"language":699,"meta":700,"style":700},"import { createLogger } from 'evlog'\n\nconst log = createLogger({ jobId: 'sync-001', queue: 'emails' })\nlog.set({ batch: { size: 50, processed: 50 } })\nlog.emit()\n","scripts\u002Fsync-job.ts",[651,857,858,877,881,929,972],{"__ignoreMap":700},[704,859,860,862,864,867,869,871,873,875],{"class":706,"line":707},[704,861,711],{"class":710},[704,863,715],{"class":714},[704,865,866],{"class":718}," createLogger",[704,868,722],{"class":714},[704,870,725],{"class":710},[704,872,728],{"class":714},[704,874,732],{"class":731},[704,876,735],{"class":714},[704,878,879],{"class":706,"line":738},[704,880,742],{"emptyLinePlaceholder":741},[704,882,883,887,890,893,895,897,899,902,904,906,909,911,913,916,918,920,923,925,927],{"class":706,"line":745},[704,884,886],{"class":885},"spNyl","const",[704,888,889],{"class":718}," log ",[704,891,892],{"class":714},"=",[704,894,866],{"class":752},[704,896,755],{"class":718},[704,898,791],{"class":714},[704,900,901],{"class":794}," jobId",[704,903,798],{"class":714},[704,905,728],{"class":714},[704,907,908],{"class":731},"sync-001",[704,910,758],{"class":714},[704,912,766],{"class":714},[704,914,915],{"class":794}," queue",[704,917,798],{"class":714},[704,919,728],{"class":714},[704,921,922],{"class":731},"emails",[704,924,758],{"class":714},[704,926,722],{"class":714},[704,928,776],{"class":718},[704,930,931,933,935,938,940,942,945,947,949,952,954,957,959,962,964,966,968,970],{"class":706,"line":779},[704,932,688],{"class":718},[704,934,637],{"class":714},[704,936,937],{"class":752},"set",[704,939,755],{"class":718},[704,941,791],{"class":714},[704,943,944],{"class":794}," batch",[704,946,798],{"class":714},[704,948,715],{"class":714},[704,950,951],{"class":794}," size",[704,953,798],{"class":714},[704,955,956],{"class":829}," 50",[704,958,766],{"class":714},[704,960,961],{"class":794}," processed",[704,963,798],{"class":714},[704,965,956],{"class":829},[704,967,722],{"class":714},[704,969,722],{"class":714},[704,971,776],{"class":718},[704,973,975,977,979,982],{"class":706,"line":974},5,[704,976,688],{"class":718},[704,978,637],{"class":714},[704,980,981],{"class":752},"emit",[704,983,984],{"class":718},"()\n",[694,986,989],{"className":696,"code":987,"filename":988,"language":699,"meta":700,"style":700},"import { createRequestLogger } from 'evlog'\n\nconst log = createRequestLogger({ method: 'POST', path: '\u002Fapi\u002Fcheckout' })\nlog.set({ user: { id: 1, plan: 'pro' } })\nlog.emit()\n","src\u002Fworker.ts",[651,990,991,1010,1014,1058,1105],{"__ignoreMap":700},[704,992,993,995,997,1000,1002,1004,1006,1008],{"class":706,"line":707},[704,994,711],{"class":710},[704,996,715],{"class":714},[704,998,999],{"class":718}," createRequestLogger",[704,1001,722],{"class":714},[704,1003,725],{"class":710},[704,1005,728],{"class":714},[704,1007,732],{"class":731},[704,1009,735],{"class":714},[704,1011,1012],{"class":706,"line":738},[704,1013,742],{"emptyLinePlaceholder":741},[704,1015,1016,1018,1020,1022,1024,1026,1028,1031,1033,1035,1038,1040,1042,1045,1047,1049,1052,1054,1056],{"class":706,"line":745},[704,1017,886],{"class":885},[704,1019,889],{"class":718},[704,1021,892],{"class":714},[704,1023,999],{"class":752},[704,1025,755],{"class":718},[704,1027,791],{"class":714},[704,1029,1030],{"class":794}," method",[704,1032,798],{"class":714},[704,1034,728],{"class":714},[704,1036,1037],{"class":731},"POST",[704,1039,758],{"class":714},[704,1041,766],{"class":714},[704,1043,1044],{"class":794}," path",[704,1046,798],{"class":714},[704,1048,728],{"class":714},[704,1050,1051],{"class":731},"\u002Fapi\u002Fcheckout",[704,1053,758],{"class":714},[704,1055,722],{"class":714},[704,1057,776],{"class":718},[704,1059,1060,1062,1064,1066,1068,1070,1073,1075,1077,1080,1082,1085,1087,1090,1092,1094,1097,1099,1101,1103],{"class":706,"line":779},[704,1061,688],{"class":718},[704,1063,637],{"class":714},[704,1065,937],{"class":752},[704,1067,755],{"class":718},[704,1069,791],{"class":714},[704,1071,1072],{"class":794}," user",[704,1074,798],{"class":714},[704,1076,715],{"class":714},[704,1078,1079],{"class":794}," id",[704,1081,798],{"class":714},[704,1083,1084],{"class":829}," 1",[704,1086,766],{"class":714},[704,1088,1089],{"class":794}," plan",[704,1091,798],{"class":714},[704,1093,728],{"class":714},[704,1095,1096],{"class":731},"pro",[704,1098,758],{"class":714},[704,1100,722],{"class":714},[704,1102,722],{"class":714},[704,1104,776],{"class":718},[704,1106,1107,1109,1111,1113],{"class":706,"line":974},[704,1108,688],{"class":718},[704,1110,637],{"class":714},[704,1112,981],{"class":752},[704,1114,984],{"class":718},[609,1116,1117,1119,1120,1122,1123,658,1126,1129,1130,637],{},[651,1118,845],{}," is a thin wrapper around ",[651,1121,841],{}," that pre-populates ",[651,1124,1125],{},"method",[651,1127,1128],{},"path",", and ",[651,1131,1132],{},"requestId",[682,1134,1136],{"id":1135},"request-logging-framework-middleware","Request Logging (framework middleware)",[609,1138,1139,1140,1143],{},"Framework integrations create a wide event logger automatically on each request. ",[651,1141,1142],{},"useLogger(event)"," retrieves the logger that's already attached to the request context:",[694,1145,1148],{"className":696,"code":1146,"filename":1147,"language":699,"meta":700,"style":700},"import { useLogger } from 'evlog'\n\nexport default defineEventHandler(async (event) => {\n  const log = useLogger(event)\n  log.set({ user: { id: 1, plan: 'pro' } })\n  return { success: true }\n  \u002F\u002F auto-emitted on response end\n})\n","server\u002Fapi\u002Fcheckout.post.ts",[651,1149,1150,1169,1173,1204,1222,1265,1285,1292],{"__ignoreMap":700},[704,1151,1152,1154,1156,1159,1161,1163,1165,1167],{"class":706,"line":707},[704,1153,711],{"class":710},[704,1155,715],{"class":714},[704,1157,1158],{"class":718}," useLogger",[704,1160,722],{"class":714},[704,1162,725],{"class":710},[704,1164,728],{"class":714},[704,1166,732],{"class":731},[704,1168,735],{"class":714},[704,1170,1171],{"class":706,"line":738},[704,1172,742],{"emptyLinePlaceholder":741},[704,1174,1175,1178,1181,1184,1186,1189,1192,1196,1198,1201],{"class":706,"line":745},[704,1176,1177],{"class":710},"export",[704,1179,1180],{"class":710}," default",[704,1182,1183],{"class":752}," defineEventHandler",[704,1185,755],{"class":718},[704,1187,1188],{"class":885},"async",[704,1190,1191],{"class":714}," (",[704,1193,1195],{"class":1194},"sHdIc","event",[704,1197,689],{"class":714},[704,1199,1200],{"class":885}," =>",[704,1202,1203],{"class":714}," {\n",[704,1205,1206,1209,1211,1214,1216,1218,1220],{"class":706,"line":779},[704,1207,1208],{"class":885},"  const",[704,1210,719],{"class":718},[704,1212,1213],{"class":714}," =",[704,1215,1158],{"class":752},[704,1217,755],{"class":794},[704,1219,1195],{"class":718},[704,1221,776],{"class":794},[704,1223,1224,1227,1229,1231,1233,1235,1237,1239,1241,1243,1245,1247,1249,1251,1253,1255,1257,1259,1261,1263],{"class":706,"line":974},[704,1225,1226],{"class":718},"  log",[704,1228,637],{"class":714},[704,1230,937],{"class":752},[704,1232,755],{"class":794},[704,1234,791],{"class":714},[704,1236,1072],{"class":794},[704,1238,798],{"class":714},[704,1240,715],{"class":714},[704,1242,1079],{"class":794},[704,1244,798],{"class":714},[704,1246,1084],{"class":829},[704,1248,766],{"class":714},[704,1250,1089],{"class":794},[704,1252,798],{"class":714},[704,1254,728],{"class":714},[704,1256,1096],{"class":731},[704,1258,758],{"class":714},[704,1260,722],{"class":714},[704,1262,722],{"class":714},[704,1264,776],{"class":794},[704,1266,1268,1271,1273,1276,1278,1282],{"class":706,"line":1267},6,[704,1269,1270],{"class":710},"  return",[704,1272,715],{"class":714},[704,1274,1275],{"class":794}," success",[704,1277,798],{"class":714},[704,1279,1281],{"class":1280},"sfNiH"," true",[704,1283,1284],{"class":714}," }\n",[704,1286,1288],{"class":706,"line":1287},7,[704,1289,1291],{"class":1290},"sHwdD","  \u002F\u002F auto-emitted on response end\n",[704,1293,1295,1298],{"class":706,"line":1294},8,[704,1296,1297],{"class":714},"}",[704,1299,776],{"class":718},[621,1301,1302,1304,1305,658,1308,658,1311,1314,1315,1317],{"color":623,"icon":13},[651,1303,1142],{}," doesn't create a logger, it retrieves the one the framework middleware already attached to the event. Each framework has its own way to access it (",[651,1306,1307],{},"useLogger",[651,1309,1310],{},"req.log",[651,1312,1313],{},"c.get('log')",", etc.). In Nuxt, ",[651,1316,1307],{}," is auto-imported.",[639,1319,1321],{"id":1320},"choose-the-mode-for-the-job","Choose the mode for the job",[1323,1324,1325,1347],"table",{},[1326,1327,1328],"thead",{},[1329,1330,1331,1334,1338,1344],"tr",{},[1332,1333],"th",{},[1332,1335,1336],{},[651,1337,688],{},[1332,1339,1340,842,1342],{},[651,1341,841],{},[651,1343,845],{},[1332,1345,1346],{},"Framework middleware",[1348,1349,1350,1367,1387,1406,1421],"tbody",{},[1329,1351,1352,1358,1361,1364],{},[1353,1354,1355],"td",{},[613,1356,1357],{},"Use case",[1353,1359,1360],{},"Quick one-off events",[1353,1362,1363],{},"Scripts, jobs, workers, queues, HTTP without a framework",[1353,1365,1366],{},"API routes with a framework integration",[1329,1368,1369,1374,1377,1383],{},[1353,1370,1371],{},[613,1372,1373],{},"Context",[1353,1375,1376],{},"Single call",[1353,1378,1379,1380],{},"Accumulate with ",[651,1381,1382],{},"set()",[1353,1384,1379,1385],{},[651,1386,1382],{},[1329,1388,1389,1394,1397,1403],{},[1353,1390,1391],{},[613,1392,1393],{},"Emit",[1353,1395,1396],{},"Immediate",[1353,1398,1399,1400],{},"Manual ",[651,1401,1402],{},"emit()",[1353,1404,1405],{},"Automatic on response end",[1329,1407,1408,1412,1415,1418],{},[1353,1409,1410],{},[613,1411,61],{},[1353,1413,1414],{},"None",[1353,1416,1417],{},"You manage it",[1353,1419,1420],{},"Framework manages it",[1329,1422,1423,1428,1431,1433],{},[1353,1424,1425],{},[613,1426,1427],{},"Output",[1353,1429,1430],{},"Console + drain",[1353,1432,1430],{},[1353,1434,1435],{},"Console + drain + enrich",[682,1437,1439],{"id":1438},"by-context","By context",[1323,1441,1442,1454],{},[1326,1443,1444],{},[1329,1445,1446,1448,1451],{},[1332,1447,1373],{},[1332,1449,1450],{},"Best fit",[1332,1452,1453],{},"Why",[1348,1455,1456,1474,1489,1510,1531,1549,1573,1591,1607,1627,1642],{},[1329,1457,1458,1463,1471],{},[1353,1459,1460],{},[613,1461,1462],{},"HTTP route in Nuxt \u002F Next \u002F Hono \u002F Express \u002F …",[1353,1464,1465,1467,1468],{},[651,1466,1142],{}," via ",[631,1469,1470],{"href":236},"framework integration",[1353,1472,1473],{},"One wide event per request, auto-emitted on response end",[1329,1475,1476,1481,1486],{},[1353,1477,1478],{},[613,1479,1480],{},"HTTP handler without a framework",[1353,1482,1483],{},[651,1484,1485],{},"createRequestLogger({ method, path })",[1353,1487,1488],{},"Same shape as framework middleware, manual emit",[1329,1490,1491,1496,1507],{},[1353,1492,1493],{},[613,1494,1495],{},"CLI tool \u002F one-shot script",[1353,1497,1498,1501,1502,1504,1505],{},[651,1499,1500],{},"log.*"," for steps + ",[651,1503,841],{}," for the run summary — see ",[631,1506,300],{"href":301},[1353,1508,1509],{},"Pretty in dev, structured in CI, one summary event for the whole run",[1329,1511,1512,1517,1528],{},[1353,1513,1514],{},[613,1515,1516],{},"Published library",[1353,1518,1519,1521,1522,1525,1526],{},[651,1520,841],{}," only — never ",[651,1523,1524],{},"initLogger"," — see ",[631,1527,300],{"href":301},[1353,1529,1530],{},"Don't pollute the host app's global config or force a drain on consumers",[1329,1532,1533,1538,1546],{},[1353,1534,1535],{},[613,1536,1537],{},"Background job \u002F queue worker \u002F cron",[1353,1539,1540,1543,1544],{},[651,1541,1542],{},"createLogger({ jobId, queue })"," per invocation — see ",[631,1545,300],{"href":301},[1353,1547,1548],{},"One wide event per job run, perfect for retry analysis",[1329,1550,1551,1556,1566],{},[1353,1552,1553],{},[613,1554,1555],{},"Cloudflare Worker \u002F edge function",[1353,1557,1558,1561,1562,1525,1564],{},[651,1559,1560],{},"createWorkersLogger(req)"," or ",[651,1563,845],{},[631,1565,295],{"href":296},[1353,1567,1568,1569,1572],{},"Per-request event, no ",[651,1570,1571],{},"process"," globals required",[1329,1574,1575,1579,1588],{},[1353,1576,1577],{},[613,1578,314],{},[1353,1580,1581,1583,1584,1543,1586],{},[651,1582,1524],{}," once + ",[651,1585,841],{},[631,1587,314],{"href":315},[1353,1589,1590],{},"Cold-start init, per-event scope, drain flush in the handler",[1329,1592,1593,1598,1604],{},[1353,1594,1595],{},[613,1596,1597],{},"Batch \u002F pipeline step",[1353,1599,1600,1603],{},[651,1601,1602],{},"createLogger({ step })"," per stage",[1353,1605,1606],{},"One event per stage with inputs and outputs side by side",[1329,1608,1609,1614,1624],{},[1353,1610,1611],{},[613,1612,1613],{},"AI agent \u002F LLM call",[1353,1615,1616,1618,1619],{},[651,1617,841],{}," + ",[631,1620,1621],{"href":338},[651,1622,1623],{},"createAILogger",[1353,1625,1626],{},"Token usage, tool calls, streaming metrics on the same wide event",[1329,1628,1629,1634,1639],{},[1353,1630,1631],{},[613,1632,1633],{},"Library function called inside a request",[1353,1635,1636,1638],{},[651,1637,1142],{}," from caller, or accept a logger as argument",[1353,1640,1641],{},"Inherit the parent's request context, contribute to the same wide event",[1329,1643,1644,1649,1654],{},[1353,1645,1646],{},[613,1647,1648],{},"Shared workspace package",[1353,1650,1651,1652],{},"Treat it like a library — see ",[631,1653,300],{"href":301},[1353,1655,1656,1657,1659,1660,1662],{},"Host app owns ",[651,1658,1524],{}," \u002F drain; packages use ",[651,1661,841],{}," or accept a logger",[621,1664,1665,1666,634,1668,1670],{"color":623,"icon":478},"None of these is an \"upgrade\" of another. Use ",[651,1667,688],{},[651,1669,841],{}," in the same file when it makes sense, since they share the global drain, redaction, and types.",[639,1672,1674],{"id":1673},"what-all-three-share","What all three share",[609,1676,1677],{},"All three modes share the same foundation:",[1679,1680,1681,1692,1700,1722,1727,1733],"ul",{},[1682,1683,1684,1687,1688,1691],"li",{},[613,1685,1686],{},"Pretty output"," in development, ",[613,1689,1690],{},"JSON"," in production (default, no configuration needed)",[1682,1693,1694,1696,1697],{},[613,1695,534],{}," to send events to Axiom, Sentry, PostHog, and more. See ",[631,1698,1699],{"href":153},"Integrate \u002F Adapters",[1682,1701,1702,1705,1706,658,1709,1129,1712,1715,1716,1721],{},[613,1703,1704],{},"Structured errors"," with ",[651,1707,1708],{},"why",[651,1710,1711],{},"fix",[651,1713,1714],{},"link",", plus optional backend-only ",[613,1717,1718],{},[651,1719,1720],{},"internal"," for logs",[1682,1723,1724,1726],{},[613,1725,66],{}," (head + tail) to control log volume in production",[1682,1728,1729,1732],{},[613,1730,1731],{},"Redaction"," that wipes secrets before they ever leave the process",[1682,1734,1735,1738],{},[613,1736,1737],{},"Zero dependencies",", ~6 kB gzip",[639,1740,1742],{"id":1741},"where-to-go-from-here","Where to go from here",[609,1744,1745],{},"After the three modes, the rest of Learn covers the concepts that show up across every mode:",[1679,1747,1748,1769,1774,1782,1787,1800],{},[1682,1749,1750,1752,1753,658,1755,658,1757,658,1759,1761,1762,1765,1766],{},[631,1751,56],{"href":57},": ",[651,1754,1708],{},[651,1756,1711],{},[651,1758,1714],{},[651,1760,1720],{},", and how ",[651,1763,1764],{},"createError"," differs from ",[651,1767,1768],{},"throw new Error",[1682,1770,1771,1773],{},[631,1772,81],{"href":82},": typed error \u002F audit catalogs that survive refactors",[1682,1775,1776,1778,1779,1781],{},[631,1777,61],{"href":62},": exactly what happens between ",[651,1780,1402],{}," and your drain",[1682,1783,1784,1786],{},[631,1785,66],{"href":67},": keep all errors and slow requests; drop healthy noise",[1682,1788,1789,1791,1792,1795,1796,1799],{},[631,1790,76],{"href":77},": augment ",[651,1793,1794],{},"RequestLogger"," so ",[651,1797,1798],{},"log.set"," is autocompleted",[1682,1801,1802,1804,1805,658,1808,658,1811,1814],{},[631,1803,1731],{"href":72},": the rules that strip ",[651,1806,1807],{},"authorization",[651,1809,1810],{},"password",[651,1812,1813],{},"token",", etc. before drain",[609,1816,1817,1818,1820,1821,1826],{},"When you're done with Learn, head to ",[631,1819,139],{"href":236}," to wire evlog into your stack, or run ",[631,1822,1823],{"href":100},[651,1824,1825],{},"evlog map"," first to find missing evlog patterns in supported entry points.",[1828,1829,1830],"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 .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 .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}html pre.shiki code .sfNiH, html code.shiki .sfNiH{--shiki-light:#FF5370;--shiki-default:#FF9CAC;--shiki-dark:#FF9CAC}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}",{"title":700,"searchDepth":738,"depth":738,"links":1832},[1833,1834,1841,1844,1845],{"id":641,"depth":738,"text":642},{"id":679,"depth":738,"text":680,"children":1835},[1836,1838,1840],{"id":684,"depth":745,"text":1837},"Simple Logging (log)",{"id":837,"depth":745,"text":1839},"Wide Events (createLogger \u002F createRequestLogger)",{"id":1135,"depth":745,"text":1136},{"id":1320,"depth":738,"text":1321,"children":1842},[1843],{"id":1438,"depth":745,"text":1439},{"id":1673,"depth":738,"text":1674},{"id":1741,"depth":738,"text":1742},"The mental model: three logging modes, the wide event lifecycle, sampling, typed fields, and redaction. Read it in order if you are new.","md",[1849,1851,1852],{"label":46,"icon":49,"to":47,"color":627,"variant":1850},"subtle",{"label":51,"icon":54,"to":52,"color":627,"variant":1850},{"label":61,"icon":64,"to":62,"color":627,"variant":1850},{},{"title":41,"icon":44},{"title":604,"description":1846},"ADJx4P14BFSdJvvpq3mDGHOcbjOWeW5KclC6u6l_fBg",[1858,1860],{"title":30,"path":31,"stem":32,"description":1859,"icon":33,"children":-1},"Choose a TypeScript logging library around the way you debug. See where evlog fits, what to keep from your current setup, and how to try it.",{"title":46,"path":47,"stem":48,"description":1861,"icon":49,"children":-1},"Use evlog for individual structured messages, with the same drains and redaction as wide events, and adapt existing logger call sites.",1791049445026]