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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":512,"body":604,"description":3052,"extension":3053,"links":3054,"meta":3060,"navigation":3061,"path":513,"seo":3062,"stem":514,"__hash__":3063},"docs\u002F6.extend\u002F4.plugins.md",{"type":605,"value":606,"toc":3044},"minimark",[607,610,623,643,730,735,994,997,2197,2200,2342,2356,2360,2375,2839,2843,2852,2942,2949,2953,3010,3014,3040],[608,609],"lifecycle-flow",{},[611,612,613,617,618,622],"p",{},[614,615,616],"code",{},"definePlugin()"," is the ",[619,620,621],"strong",{},"canonical extension point"," for evlog. Drains and enrichers are special cases of plugins, but a single plugin can opt into multiple hooks at once, the right shape for any non-trivial extension that mixes several concerns (e.g. enrich on every event + side-effect on drain + keep decision on tail sampling, all reading the same shared state).",[611,624,625,626,632,633,638,639,642],{},"When the extension only does one thing, prefer the single-purpose ",[627,628,629],"a",{"href":517},[614,630,631],{},"enricherPlugin()"," \u002F ",[627,634,635],{"href":530},[614,636,637],{},"drainPlugin()"," wrappers. Reach for ",[614,640,641],{},"definePlugin"," when several hooks share state.",[644,645,648,651,722],"prompt",{":actions":646,"description":647,"icon":487},"[\"copy\",\"cursor\",\"claude\"]","Build a multi-hook evlog plugin",[611,649,650],{},"Build an evlog plugin that hooks into more than one lifecycle stage.",[652,653,654,688,694,697,711],"ul",{},[655,656,657,658,660,661,664,665,668,669,668,672,668,675,668,678,668,681,668,684,687],"li",{},"Import ",[614,659,641],{}," from ",[614,662,663],{},"evlog"," and pick the hooks I need (",[614,666,667],{},"onRequestStart",", ",[614,670,671],{},"enrich",[614,673,674],{},"drain",[614,676,677],{},"extendLogger",[614,679,680],{},"keep",[614,682,683],{},"onClientLog",[614,685,686],{},"onRequestFinish",")",[655,689,690,691,693],{},"Keep ",[614,692,671],{}," pure (no I\u002FO, no throwing, use try\u002Fcatch internally)",[655,695,696],{},"For drains, batch and ship to the destination; respect backpressure if the drain is slow",[655,698,699,700,703,704,707,708,687],{},"Register the plugin via the framework config: Next\u002Fstandalone ",[614,701,702],{},"initLogger({ plugins: [myPlugin] })",", Hono\u002FExpress\u002FFastify\u002FElysia middleware option ",[614,705,706],{},"{ plugins: [myPlugin] }",". For Nitro, register the individual hooks directly (",[614,709,710],{},"nitroApp.hooks.hook('evlog:enrich' | 'evlog:drain' | …)",[655,712,713,714,632,716,718,719,721],{},"Prefer single-purpose ",[614,715,631],{},[614,717,637],{}," wrappers for simple extensions; use ",[614,720,641],{}," only when several hooks are needed",[611,723,724,725],{},"Docs: ",[627,726,727],{"href":727,"rel":728},"https:\u002F\u002Fwww.evlog.dev\u002Fextend\u002Fplugins",[729],"nofollow",[731,732,734],"h2",{"id":733},"minimal-example","Minimal example",[736,737,742],"pre",{"className":738,"code":739,"language":740,"meta":741,"style":741},"language-ts shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { definePlugin } from 'evlog'\n\nexport const tenantPlugin = definePlugin({\n  name: 'tenant',\n  onRequestStart({ logger, headers }) {\n    const tenantId = headers?.['x-tenant-id']\n    if (tenantId) logger.set({ tenant: { id: tenantId } })\n  },\n  enrich({ event }) {\n    event.region = process.env.REGION\n  },\n})\n","ts","",[614,743,744,776,783,808,829,854,884,934,940,955,981,986],{"__ignoreMap":741},[745,746,749,753,757,761,764,767,770,773],"span",{"class":747,"line":748},"line",1,[745,750,752],{"class":751},"s7zQu","import",[745,754,756],{"class":755},"sMK4o"," {",[745,758,760],{"class":759},"sTEyZ"," definePlugin",[745,762,763],{"class":755}," }",[745,765,766],{"class":751}," from",[745,768,769],{"class":755}," '",[745,771,663],{"class":772},"sfazB",[745,774,775],{"class":755},"'\n",[745,777,779],{"class":747,"line":778},2,[745,780,782],{"emptyLinePlaceholder":781},true,"\n",[745,784,786,789,793,796,799,802,805],{"class":747,"line":785},3,[745,787,788],{"class":751},"export",[745,790,792],{"class":791},"spNyl"," const",[745,794,795],{"class":759}," tenantPlugin ",[745,797,798],{"class":755},"=",[745,800,760],{"class":801},"s2Zo4",[745,803,804],{"class":759},"(",[745,806,807],{"class":755},"{\n",[745,809,811,815,818,820,823,826],{"class":747,"line":810},4,[745,812,814],{"class":813},"swJcz","  name",[745,816,817],{"class":755},":",[745,819,769],{"class":755},[745,821,822],{"class":772},"tenant",[745,824,825],{"class":755},"'",[745,827,828],{"class":755},",\n",[745,830,832,835,838,842,845,848,851],{"class":747,"line":831},5,[745,833,834],{"class":813},"  onRequestStart",[745,836,837],{"class":755},"({",[745,839,841],{"class":840},"sHdIc"," logger",[745,843,844],{"class":755},",",[745,846,847],{"class":840}," headers",[745,849,850],{"class":755}," })",[745,852,853],{"class":755}," {\n",[745,855,857,860,863,866,868,871,874,876,879,881],{"class":747,"line":856},6,[745,858,859],{"class":791},"    const",[745,861,862],{"class":759}," tenantId",[745,864,865],{"class":755}," =",[745,867,847],{"class":759},[745,869,870],{"class":755},"?.",[745,872,873],{"class":813},"[",[745,875,825],{"class":755},[745,877,878],{"class":772},"x-tenant-id",[745,880,825],{"class":755},[745,882,883],{"class":813},"]\n",[745,885,887,890,893,896,899,902,905,908,910,913,916,918,920,923,925,927,929,931],{"class":747,"line":886},7,[745,888,889],{"class":751},"    if",[745,891,892],{"class":813}," (",[745,894,895],{"class":759},"tenantId",[745,897,898],{"class":813},") ",[745,900,901],{"class":759},"logger",[745,903,904],{"class":755},".",[745,906,907],{"class":801},"set",[745,909,804],{"class":813},[745,911,912],{"class":755},"{",[745,914,915],{"class":813}," tenant",[745,917,817],{"class":755},[745,919,756],{"class":755},[745,921,922],{"class":813}," id",[745,924,817],{"class":755},[745,926,862],{"class":759},[745,928,763],{"class":755},[745,930,763],{"class":755},[745,932,933],{"class":813},")\n",[745,935,937],{"class":747,"line":936},8,[745,938,939],{"class":755},"  },\n",[745,941,943,946,948,951,953],{"class":747,"line":942},9,[745,944,945],{"class":813},"  enrich",[745,947,837],{"class":755},[745,949,950],{"class":840}," event",[745,952,850],{"class":755},[745,954,853],{"class":755},[745,956,958,961,963,966,968,971,973,976,978],{"class":747,"line":957},10,[745,959,960],{"class":759},"    event",[745,962,904],{"class":755},[745,964,965],{"class":759},"region",[745,967,865],{"class":755},[745,969,970],{"class":759}," process",[745,972,904],{"class":755},[745,974,975],{"class":759},"env",[745,977,904],{"class":755},[745,979,980],{"class":759},"REGION\n",[745,982,984],{"class":747,"line":983},11,[745,985,939],{"class":755},[745,987,989,992],{"class":747,"line":988},12,[745,990,991],{"class":755},"}",[745,993,933],{"class":759},[611,995,996],{},"Register the plugin where you bootstrap evlog. The shape depends on your runtime:",[998,999,1000,1097,1201,1319,1405,1507,1608,1684,1756,1832,1904,1976,2060,2132],"framework-tabs",{},[736,1001,1004],{"className":738,"code":1002,"filename":240,"language":740,"meta":1003,"style":741},"import { tenantPlugin } from '.\u002Fplugins\u002Ftenant'\n\nexport default defineNitroPlugin((nitroApp) => {\n  nitroApp.hooks.hook('evlog:enrich', tenantPlugin.enrich!)\n})\n","server\u002Fplugins\u002Fevlog.ts",[614,1005,1006,1026,1030,1054,1091],{"__ignoreMap":741},[745,1007,1008,1010,1012,1015,1017,1019,1021,1024],{"class":747,"line":748},[745,1009,752],{"class":751},[745,1011,756],{"class":755},[745,1013,1014],{"class":759}," tenantPlugin",[745,1016,763],{"class":755},[745,1018,766],{"class":751},[745,1020,769],{"class":755},[745,1022,1023],{"class":772},".\u002Fplugins\u002Ftenant",[745,1025,775],{"class":755},[745,1027,1028],{"class":747,"line":778},[745,1029,782],{"emptyLinePlaceholder":781},[745,1031,1032,1034,1037,1040,1042,1044,1047,1049,1052],{"class":747,"line":785},[745,1033,788],{"class":751},[745,1035,1036],{"class":751}," default",[745,1038,1039],{"class":801}," defineNitroPlugin",[745,1041,804],{"class":759},[745,1043,804],{"class":755},[745,1045,1046],{"class":840},"nitroApp",[745,1048,687],{"class":755},[745,1050,1051],{"class":791}," =>",[745,1053,853],{"class":755},[745,1055,1056,1059,1061,1064,1066,1069,1071,1073,1076,1078,1080,1082,1084,1086,1089],{"class":747,"line":810},[745,1057,1058],{"class":759},"  nitroApp",[745,1060,904],{"class":755},[745,1062,1063],{"class":759},"hooks",[745,1065,904],{"class":755},[745,1067,1068],{"class":801},"hook",[745,1070,804],{"class":813},[745,1072,825],{"class":755},[745,1074,1075],{"class":772},"evlog:enrich",[745,1077,825],{"class":755},[745,1079,844],{"class":755},[745,1081,1014],{"class":759},[745,1083,904],{"class":755},[745,1085,671],{"class":759},[745,1087,1088],{"class":755},"!",[745,1090,933],{"class":813},[745,1092,1093,1095],{"class":747,"line":831},[745,1094,991],{"class":755},[745,1096,933],{"class":759},[736,1098,1100],{"className":738,"code":1099,"filename":255,"language":740,"meta":1003,"style":741},"import { definePlugin } from 'nitro'\nimport { tenantPlugin } from '.\u002Fplugins\u002Ftenant'\n\nexport default definePlugin((nitroApp) => {\n  nitroApp.hooks.hook('evlog:enrich', tenantPlugin.enrich!)\n})\n",[614,1101,1102,1121,1139,1143,1163,1195],{"__ignoreMap":741},[745,1103,1104,1106,1108,1110,1112,1114,1116,1119],{"class":747,"line":748},[745,1105,752],{"class":751},[745,1107,756],{"class":755},[745,1109,760],{"class":759},[745,1111,763],{"class":755},[745,1113,766],{"class":751},[745,1115,769],{"class":755},[745,1117,1118],{"class":772},"nitro",[745,1120,775],{"class":755},[745,1122,1123,1125,1127,1129,1131,1133,1135,1137],{"class":747,"line":778},[745,1124,752],{"class":751},[745,1126,756],{"class":755},[745,1128,1014],{"class":759},[745,1130,763],{"class":755},[745,1132,766],{"class":751},[745,1134,769],{"class":755},[745,1136,1023],{"class":772},[745,1138,775],{"class":755},[745,1140,1141],{"class":747,"line":785},[745,1142,782],{"emptyLinePlaceholder":781},[745,1144,1145,1147,1149,1151,1153,1155,1157,1159,1161],{"class":747,"line":810},[745,1146,788],{"class":751},[745,1148,1036],{"class":751},[745,1150,760],{"class":801},[745,1152,804],{"class":759},[745,1154,804],{"class":755},[745,1156,1046],{"class":840},[745,1158,687],{"class":755},[745,1160,1051],{"class":791},[745,1162,853],{"class":755},[745,1164,1165,1167,1169,1171,1173,1175,1177,1179,1181,1183,1185,1187,1189,1191,1193],{"class":747,"line":831},[745,1166,1058],{"class":759},[745,1168,904],{"class":755},[745,1170,1063],{"class":759},[745,1172,904],{"class":755},[745,1174,1068],{"class":801},[745,1176,804],{"class":813},[745,1178,825],{"class":755},[745,1180,1075],{"class":772},[745,1182,825],{"class":755},[745,1184,844],{"class":755},[745,1186,1014],{"class":759},[745,1188,904],{"class":755},[745,1190,671],{"class":759},[745,1192,1088],{"class":755},[745,1194,933],{"class":813},[745,1196,1197,1199],{"class":747,"line":856},[745,1198,991],{"class":755},[745,1200,933],{"class":759},[736,1202,1205],{"className":738,"code":1203,"filename":245,"language":740,"meta":1204,"style":741},"import { createEvlog } from 'evlog\u002Fnext'\nimport { tenantPlugin } from '.\u002Fplugins\u002Ftenant'\n\nexport const { withEvlog, useLogger, log, createError } = createEvlog({\n  service: 'my-app',\n  plugins: [tenantPlugin],\n})\n","lib\u002Fevlog.ts",[614,1206,1207,1227,1245,1249,1285,1301,1313],{"__ignoreMap":741},[745,1208,1209,1211,1213,1216,1218,1220,1222,1225],{"class":747,"line":748},[745,1210,752],{"class":751},[745,1212,756],{"class":755},[745,1214,1215],{"class":759}," createEvlog",[745,1217,763],{"class":755},[745,1219,766],{"class":751},[745,1221,769],{"class":755},[745,1223,1224],{"class":772},"evlog\u002Fnext",[745,1226,775],{"class":755},[745,1228,1229,1231,1233,1235,1237,1239,1241,1243],{"class":747,"line":778},[745,1230,752],{"class":751},[745,1232,756],{"class":755},[745,1234,1014],{"class":759},[745,1236,763],{"class":755},[745,1238,766],{"class":751},[745,1240,769],{"class":755},[745,1242,1023],{"class":772},[745,1244,775],{"class":755},[745,1246,1247],{"class":747,"line":785},[745,1248,782],{"emptyLinePlaceholder":781},[745,1250,1251,1253,1255,1257,1260,1262,1265,1267,1270,1272,1275,1277,1279,1281,1283],{"class":747,"line":810},[745,1252,788],{"class":751},[745,1254,792],{"class":791},[745,1256,756],{"class":755},[745,1258,1259],{"class":759}," withEvlog",[745,1261,844],{"class":755},[745,1263,1264],{"class":759}," useLogger",[745,1266,844],{"class":755},[745,1268,1269],{"class":759}," log",[745,1271,844],{"class":755},[745,1273,1274],{"class":759}," createError ",[745,1276,991],{"class":755},[745,1278,865],{"class":755},[745,1280,1215],{"class":801},[745,1282,804],{"class":759},[745,1284,807],{"class":755},[745,1286,1287,1290,1292,1294,1297,1299],{"class":747,"line":831},[745,1288,1289],{"class":813},"  service",[745,1291,817],{"class":755},[745,1293,769],{"class":755},[745,1295,1296],{"class":772},"my-app",[745,1298,825],{"class":755},[745,1300,828],{"class":755},[745,1302,1303,1306,1308,1311],{"class":747,"line":856},[745,1304,1305],{"class":813},"  plugins",[745,1307,817],{"class":755},[745,1309,1310],{"class":759}," [tenantPlugin]",[745,1312,828],{"class":755},[745,1314,1315,1317],{"class":747,"line":886},[745,1316,991],{"class":755},[745,1318,933],{"class":759},[736,1320,1323],{"className":738,"code":1321,"filename":250,"language":740,"meta":1322,"style":741},"import { createEvlogHooks } from 'evlog\u002Fsveltekit'\nimport { tenantPlugin } from '.\u002Fplugins\u002Ftenant'\n\nexport const { handle, handleError } = createEvlogHooks({ plugins: [tenantPlugin] })\n","src\u002Fhooks.server.ts",[614,1324,1325,1345,1363,1367],{"__ignoreMap":741},[745,1326,1327,1329,1331,1334,1336,1338,1340,1343],{"class":747,"line":748},[745,1328,752],{"class":751},[745,1330,756],{"class":755},[745,1332,1333],{"class":759}," createEvlogHooks",[745,1335,763],{"class":755},[745,1337,766],{"class":751},[745,1339,769],{"class":755},[745,1341,1342],{"class":772},"evlog\u002Fsveltekit",[745,1344,775],{"class":755},[745,1346,1347,1349,1351,1353,1355,1357,1359,1361],{"class":747,"line":778},[745,1348,752],{"class":751},[745,1350,756],{"class":755},[745,1352,1014],{"class":759},[745,1354,763],{"class":755},[745,1356,766],{"class":751},[745,1358,769],{"class":755},[745,1360,1023],{"class":772},[745,1362,775],{"class":755},[745,1364,1365],{"class":747,"line":785},[745,1366,782],{"emptyLinePlaceholder":781},[745,1368,1369,1371,1373,1375,1378,1380,1383,1385,1387,1389,1391,1393,1396,1398,1401,1403],{"class":747,"line":810},[745,1370,788],{"class":751},[745,1372,792],{"class":791},[745,1374,756],{"class":755},[745,1376,1377],{"class":759}," handle",[745,1379,844],{"class":755},[745,1381,1382],{"class":759}," handleError ",[745,1384,991],{"class":755},[745,1386,865],{"class":755},[745,1388,1333],{"class":801},[745,1390,804],{"class":759},[745,1392,912],{"class":755},[745,1394,1395],{"class":813}," plugins",[745,1397,817],{"class":755},[745,1399,1400],{"class":759}," [tenantPlugin] ",[745,1402,991],{"class":755},[745,1404,933],{"class":759},[736,1406,1407],{"className":738,"code":1099,"filename":260,"language":740,"meta":1003,"style":741},[614,1408,1409,1427,1445,1449,1469,1501],{"__ignoreMap":741},[745,1410,1411,1413,1415,1417,1419,1421,1423,1425],{"class":747,"line":748},[745,1412,752],{"class":751},[745,1414,756],{"class":755},[745,1416,760],{"class":759},[745,1418,763],{"class":755},[745,1420,766],{"class":751},[745,1422,769],{"class":755},[745,1424,1118],{"class":772},[745,1426,775],{"class":755},[745,1428,1429,1431,1433,1435,1437,1439,1441,1443],{"class":747,"line":778},[745,1430,752],{"class":751},[745,1432,756],{"class":755},[745,1434,1014],{"class":759},[745,1436,763],{"class":755},[745,1438,766],{"class":751},[745,1440,769],{"class":755},[745,1442,1023],{"class":772},[745,1444,775],{"class":755},[745,1446,1447],{"class":747,"line":785},[745,1448,782],{"emptyLinePlaceholder":781},[745,1450,1451,1453,1455,1457,1459,1461,1463,1465,1467],{"class":747,"line":810},[745,1452,788],{"class":751},[745,1454,1036],{"class":751},[745,1456,760],{"class":801},[745,1458,804],{"class":759},[745,1460,804],{"class":755},[745,1462,1046],{"class":840},[745,1464,687],{"class":755},[745,1466,1051],{"class":791},[745,1468,853],{"class":755},[745,1470,1471,1473,1475,1477,1479,1481,1483,1485,1487,1489,1491,1493,1495,1497,1499],{"class":747,"line":831},[745,1472,1058],{"class":759},[745,1474,904],{"class":755},[745,1476,1063],{"class":759},[745,1478,904],{"class":755},[745,1480,1068],{"class":801},[745,1482,804],{"class":813},[745,1484,825],{"class":755},[745,1486,1075],{"class":772},[745,1488,825],{"class":755},[745,1490,844],{"class":755},[745,1492,1014],{"class":759},[745,1494,904],{"class":755},[745,1496,671],{"class":759},[745,1498,1088],{"class":755},[745,1500,933],{"class":813},[745,1502,1503,1505],{"class":747,"line":856},[745,1504,991],{"class":755},[745,1506,933],{"class":759},[736,1508,1511],{"className":738,"code":1509,"filename":290,"language":740,"meta":1510,"style":741},"import { evlog } from 'evlog\u002Freact-router'\nimport { tenantPlugin } from '.\u002Fplugins\u002Ftenant'\n\nexport const middleware: Route.MiddlewareFunction[] = [\n  evlog({ plugins: [tenantPlugin] }),\n]\n","app\u002Froot.tsx",[614,1512,1513,1533,1551,1555,1583,1604],{"__ignoreMap":741},[745,1514,1515,1517,1519,1522,1524,1526,1528,1531],{"class":747,"line":748},[745,1516,752],{"class":751},[745,1518,756],{"class":755},[745,1520,1521],{"class":759}," evlog",[745,1523,763],{"class":755},[745,1525,766],{"class":751},[745,1527,769],{"class":755},[745,1529,1530],{"class":772},"evlog\u002Freact-router",[745,1532,775],{"class":755},[745,1534,1535,1537,1539,1541,1543,1545,1547,1549],{"class":747,"line":778},[745,1536,752],{"class":751},[745,1538,756],{"class":755},[745,1540,1014],{"class":759},[745,1542,763],{"class":755},[745,1544,766],{"class":751},[745,1546,769],{"class":755},[745,1548,1023],{"class":772},[745,1550,775],{"class":755},[745,1552,1553],{"class":747,"line":785},[745,1554,782],{"emptyLinePlaceholder":781},[745,1556,1557,1559,1561,1564,1566,1570,1572,1575,1578,1580],{"class":747,"line":810},[745,1558,788],{"class":751},[745,1560,792],{"class":791},[745,1562,1563],{"class":759}," middleware",[745,1565,817],{"class":755},[745,1567,1569],{"class":1568},"sBMFI"," Route",[745,1571,904],{"class":755},[745,1573,1574],{"class":1568},"MiddlewareFunction",[745,1576,1577],{"class":759},"[] ",[745,1579,798],{"class":755},[745,1581,1582],{"class":759}," [\n",[745,1584,1585,1588,1590,1592,1594,1596,1598,1600,1602],{"class":747,"line":831},[745,1586,1587],{"class":801},"  evlog",[745,1589,804],{"class":759},[745,1591,912],{"class":755},[745,1593,1395],{"class":813},[745,1595,817],{"class":755},[745,1597,1400],{"class":759},[745,1599,991],{"class":755},[745,1601,687],{"class":759},[745,1603,828],{"class":755},[745,1605,1606],{"class":747,"line":856},[745,1607,883],{"class":759},[736,1609,1612],{"className":738,"code":1610,"filename":275,"language":740,"meta":1611,"style":741},"import { evlog } from 'evlog\u002Fhono'\nimport { tenantPlugin } from '.\u002Fplugins\u002Ftenant'\n\napp.use(evlog({ plugins: [tenantPlugin] }))\n","src\u002Findex.ts",[614,1613,1614,1633,1651,1655],{"__ignoreMap":741},[745,1615,1616,1618,1620,1622,1624,1626,1628,1631],{"class":747,"line":748},[745,1617,752],{"class":751},[745,1619,756],{"class":755},[745,1621,1521],{"class":759},[745,1623,763],{"class":755},[745,1625,766],{"class":751},[745,1627,769],{"class":755},[745,1629,1630],{"class":772},"evlog\u002Fhono",[745,1632,775],{"class":755},[745,1634,1635,1637,1639,1641,1643,1645,1647,1649],{"class":747,"line":778},[745,1636,752],{"class":751},[745,1638,756],{"class":755},[745,1640,1014],{"class":759},[745,1642,763],{"class":755},[745,1644,766],{"class":751},[745,1646,769],{"class":755},[745,1648,1023],{"class":772},[745,1650,775],{"class":755},[745,1652,1653],{"class":747,"line":785},[745,1654,782],{"emptyLinePlaceholder":781},[745,1656,1657,1660,1662,1665,1667,1669,1671,1673,1675,1677,1679,1681],{"class":747,"line":810},[745,1658,1659],{"class":759},"app",[745,1661,904],{"class":755},[745,1663,1664],{"class":801},"use",[745,1666,804],{"class":759},[745,1668,663],{"class":801},[745,1670,804],{"class":759},[745,1672,912],{"class":755},[745,1674,1395],{"class":813},[745,1676,817],{"class":755},[745,1678,1400],{"class":759},[745,1680,991],{"class":755},[745,1682,1683],{"class":759},"))\n",[736,1685,1687],{"className":738,"code":1686,"filename":270,"language":740,"meta":1611,"style":741},"import { evlog } from 'evlog\u002Fexpress'\nimport { tenantPlugin } from '.\u002Fplugins\u002Ftenant'\n\napp.use(evlog({ plugins: [tenantPlugin] }))\n",[614,1688,1689,1708,1726,1730],{"__ignoreMap":741},[745,1690,1691,1693,1695,1697,1699,1701,1703,1706],{"class":747,"line":748},[745,1692,752],{"class":751},[745,1694,756],{"class":755},[745,1696,1521],{"class":759},[745,1698,763],{"class":755},[745,1700,766],{"class":751},[745,1702,769],{"class":755},[745,1704,1705],{"class":772},"evlog\u002Fexpress",[745,1707,775],{"class":755},[745,1709,1710,1712,1714,1716,1718,1720,1722,1724],{"class":747,"line":778},[745,1711,752],{"class":751},[745,1713,756],{"class":755},[745,1715,1014],{"class":759},[745,1717,763],{"class":755},[745,1719,766],{"class":751},[745,1721,769],{"class":755},[745,1723,1023],{"class":772},[745,1725,775],{"class":755},[745,1727,1728],{"class":747,"line":785},[745,1729,782],{"emptyLinePlaceholder":781},[745,1731,1732,1734,1736,1738,1740,1742,1744,1746,1748,1750,1752,1754],{"class":747,"line":810},[745,1733,1659],{"class":759},[745,1735,904],{"class":755},[745,1737,1664],{"class":801},[745,1739,804],{"class":759},[745,1741,663],{"class":801},[745,1743,804],{"class":759},[745,1745,912],{"class":755},[745,1747,1395],{"class":813},[745,1749,817],{"class":755},[745,1751,1400],{"class":759},[745,1753,991],{"class":755},[745,1755,1683],{"class":759},[736,1757,1759],{"className":738,"code":1758,"filename":280,"language":740,"meta":1611,"style":741},"import { evlog } from 'evlog\u002Ffastify'\nimport { tenantPlugin } from '.\u002Fplugins\u002Ftenant'\n\nawait app.register(evlog, { plugins: [tenantPlugin] })\n",[614,1760,1761,1780,1798,1802],{"__ignoreMap":741},[745,1762,1763,1765,1767,1769,1771,1773,1775,1778],{"class":747,"line":748},[745,1764,752],{"class":751},[745,1766,756],{"class":755},[745,1768,1521],{"class":759},[745,1770,763],{"class":755},[745,1772,766],{"class":751},[745,1774,769],{"class":755},[745,1776,1777],{"class":772},"evlog\u002Ffastify",[745,1779,775],{"class":755},[745,1781,1782,1784,1786,1788,1790,1792,1794,1796],{"class":747,"line":778},[745,1783,752],{"class":751},[745,1785,756],{"class":755},[745,1787,1014],{"class":759},[745,1789,763],{"class":755},[745,1791,766],{"class":751},[745,1793,769],{"class":755},[745,1795,1023],{"class":772},[745,1797,775],{"class":755},[745,1799,1800],{"class":747,"line":785},[745,1801,782],{"emptyLinePlaceholder":781},[745,1803,1804,1807,1810,1812,1815,1818,1820,1822,1824,1826,1828,1830],{"class":747,"line":810},[745,1805,1806],{"class":751},"await",[745,1808,1809],{"class":759}," app",[745,1811,904],{"class":755},[745,1813,1814],{"class":801},"register",[745,1816,1817],{"class":759},"(evlog",[745,1819,844],{"class":755},[745,1821,756],{"class":755},[745,1823,1395],{"class":813},[745,1825,817],{"class":755},[745,1827,1400],{"class":759},[745,1829,991],{"class":755},[745,1831,933],{"class":759},[736,1833,1835],{"className":738,"code":1834,"filename":285,"language":740,"meta":1611,"style":741},"import { evlog } from 'evlog\u002Felysia'\nimport { tenantPlugin } from '.\u002Fplugins\u002Ftenant'\n\napp.use(evlog({ plugins: [tenantPlugin] }))\n",[614,1836,1837,1856,1874,1878],{"__ignoreMap":741},[745,1838,1839,1841,1843,1845,1847,1849,1851,1854],{"class":747,"line":748},[745,1840,752],{"class":751},[745,1842,756],{"class":755},[745,1844,1521],{"class":759},[745,1846,763],{"class":755},[745,1848,766],{"class":751},[745,1850,769],{"class":755},[745,1852,1853],{"class":772},"evlog\u002Felysia",[745,1855,775],{"class":755},[745,1857,1858,1860,1862,1864,1866,1868,1870,1872],{"class":747,"line":778},[745,1859,752],{"class":751},[745,1861,756],{"class":755},[745,1863,1014],{"class":759},[745,1865,763],{"class":755},[745,1867,766],{"class":751},[745,1869,769],{"class":755},[745,1871,1023],{"class":772},[745,1873,775],{"class":755},[745,1875,1876],{"class":747,"line":785},[745,1877,782],{"emptyLinePlaceholder":781},[745,1879,1880,1882,1884,1886,1888,1890,1892,1894,1896,1898,1900,1902],{"class":747,"line":810},[745,1881,1659],{"class":759},[745,1883,904],{"class":755},[745,1885,1664],{"class":801},[745,1887,804],{"class":759},[745,1889,663],{"class":801},[745,1891,804],{"class":759},[745,1893,912],{"class":755},[745,1895,1395],{"class":813},[745,1897,817],{"class":755},[745,1899,1400],{"class":759},[745,1901,991],{"class":755},[745,1903,1683],{"class":759},[736,1905,1908],{"className":738,"code":1906,"filename":265,"language":740,"meta":1907,"style":741},"import { EvlogModule } from 'evlog\u002Fnestjs'\nimport { tenantPlugin } from '.\u002Fplugins\u002Ftenant'\n\nEvlogModule.forRoot({ plugins: [tenantPlugin] })\n","src\u002Fapp.module.ts",[614,1909,1910,1930,1948,1952],{"__ignoreMap":741},[745,1911,1912,1914,1916,1919,1921,1923,1925,1928],{"class":747,"line":748},[745,1913,752],{"class":751},[745,1915,756],{"class":755},[745,1917,1918],{"class":759}," EvlogModule",[745,1920,763],{"class":755},[745,1922,766],{"class":751},[745,1924,769],{"class":755},[745,1926,1927],{"class":772},"evlog\u002Fnestjs",[745,1929,775],{"class":755},[745,1931,1932,1934,1936,1938,1940,1942,1944,1946],{"class":747,"line":778},[745,1933,752],{"class":751},[745,1935,756],{"class":755},[745,1937,1014],{"class":759},[745,1939,763],{"class":755},[745,1941,766],{"class":751},[745,1943,769],{"class":755},[745,1945,1023],{"class":772},[745,1947,775],{"class":755},[745,1949,1950],{"class":747,"line":785},[745,1951,782],{"emptyLinePlaceholder":781},[745,1953,1954,1957,1959,1962,1964,1966,1968,1970,1972,1974],{"class":747,"line":810},[745,1955,1956],{"class":759},"EvlogModule",[745,1958,904],{"class":755},[745,1960,1961],{"class":801},"forRoot",[745,1963,804],{"class":759},[745,1965,912],{"class":755},[745,1967,1395],{"class":813},[745,1969,817],{"class":755},[745,1971,1400],{"class":759},[745,1973,991],{"class":755},[745,1975,933],{"class":759},[736,1977,1980],{"className":738,"code":1978,"filename":309,"language":740,"meta":1979,"style":741},"import { withEvlog } from 'evlog\u002Forpc'\nimport { tenantPlugin } from '.\u002Fplugins\u002Ftenant'\n\nconst handler = withEvlog(new RPCHandler(router), { plugins: [tenantPlugin] })\n","server\u002Forpc.ts",[614,1981,1982,2001,2019,2023],{"__ignoreMap":741},[745,1983,1984,1986,1988,1990,1992,1994,1996,1999],{"class":747,"line":748},[745,1985,752],{"class":751},[745,1987,756],{"class":755},[745,1989,1259],{"class":759},[745,1991,763],{"class":755},[745,1993,766],{"class":751},[745,1995,769],{"class":755},[745,1997,1998],{"class":772},"evlog\u002Forpc",[745,2000,775],{"class":755},[745,2002,2003,2005,2007,2009,2011,2013,2015,2017],{"class":747,"line":778},[745,2004,752],{"class":751},[745,2006,756],{"class":755},[745,2008,1014],{"class":759},[745,2010,763],{"class":755},[745,2012,766],{"class":751},[745,2014,769],{"class":755},[745,2016,1023],{"class":772},[745,2018,775],{"class":755},[745,2020,2021],{"class":747,"line":785},[745,2022,782],{"emptyLinePlaceholder":781},[745,2024,2025,2028,2031,2033,2035,2037,2040,2043,2046,2048,2050,2052,2054,2056,2058],{"class":747,"line":810},[745,2026,2027],{"class":791},"const",[745,2029,2030],{"class":759}," handler ",[745,2032,798],{"class":755},[745,2034,1259],{"class":801},[745,2036,804],{"class":759},[745,2038,2039],{"class":755},"new",[745,2041,2042],{"class":801}," RPCHandler",[745,2044,2045],{"class":759},"(router)",[745,2047,844],{"class":755},[745,2049,756],{"class":755},[745,2051,1395],{"class":813},[745,2053,817],{"class":755},[745,2055,1400],{"class":759},[745,2057,991],{"class":755},[745,2059,933],{"class":759},[736,2061,2064],{"className":738,"code":2062,"filename":295,"language":740,"meta":2063,"style":741},"import { withEvlog } from 'evlog\u002Fworkers'\nimport { tenantPlugin } from '.\u002Fplugins\u002Ftenant'\n\nexport default withEvlog(handler, { plugins: [tenantPlugin] })\n","src\u002Fworker.ts",[614,2065,2066,2085,2103,2107],{"__ignoreMap":741},[745,2067,2068,2070,2072,2074,2076,2078,2080,2083],{"class":747,"line":748},[745,2069,752],{"class":751},[745,2071,756],{"class":755},[745,2073,1259],{"class":759},[745,2075,763],{"class":755},[745,2077,766],{"class":751},[745,2079,769],{"class":755},[745,2081,2082],{"class":772},"evlog\u002Fworkers",[745,2084,775],{"class":755},[745,2086,2087,2089,2091,2093,2095,2097,2099,2101],{"class":747,"line":778},[745,2088,752],{"class":751},[745,2090,756],{"class":755},[745,2092,1014],{"class":759},[745,2094,763],{"class":755},[745,2096,766],{"class":751},[745,2098,769],{"class":755},[745,2100,1023],{"class":772},[745,2102,775],{"class":755},[745,2104,2105],{"class":747,"line":785},[745,2106,782],{"emptyLinePlaceholder":781},[745,2108,2109,2111,2113,2115,2118,2120,2122,2124,2126,2128,2130],{"class":747,"line":810},[745,2110,788],{"class":751},[745,2112,1036],{"class":751},[745,2114,1259],{"class":801},[745,2116,2117],{"class":759},"(handler",[745,2119,844],{"class":755},[745,2121,756],{"class":755},[745,2123,1395],{"class":813},[745,2125,817],{"class":755},[745,2127,1400],{"class":759},[745,2129,991],{"class":755},[745,2131,933],{"class":759},[736,2133,2135],{"className":738,"code":2134,"filename":300,"language":740,"meta":1611,"style":741},"import { initLogger } from 'evlog'\nimport { tenantPlugin } from '.\u002Fplugins\u002Ftenant'\n\ninitLogger({ plugins: [tenantPlugin] })\n",[614,2136,2137,2156,2174,2178],{"__ignoreMap":741},[745,2138,2139,2141,2143,2146,2148,2150,2152,2154],{"class":747,"line":748},[745,2140,752],{"class":751},[745,2142,756],{"class":755},[745,2144,2145],{"class":759}," initLogger",[745,2147,763],{"class":755},[745,2149,766],{"class":751},[745,2151,769],{"class":755},[745,2153,663],{"class":772},[745,2155,775],{"class":755},[745,2157,2158,2160,2162,2164,2166,2168,2170,2172],{"class":747,"line":778},[745,2159,752],{"class":751},[745,2161,756],{"class":755},[745,2163,1014],{"class":759},[745,2165,763],{"class":755},[745,2167,766],{"class":751},[745,2169,769],{"class":755},[745,2171,1023],{"class":772},[745,2173,775],{"class":755},[745,2175,2176],{"class":747,"line":785},[745,2177,782],{"emptyLinePlaceholder":781},[745,2179,2180,2183,2185,2187,2189,2191,2193,2195],{"class":747,"line":810},[745,2181,2182],{"class":801},"initLogger",[745,2184,804],{"class":759},[745,2186,912],{"class":755},[745,2188,1395],{"class":813},[745,2190,817],{"class":755},[745,2192,1400],{"class":759},[745,2194,991],{"class":755},[745,2196,933],{"class":759},[731,2198,2199],{"id":1063},"Hooks",[2201,2202,2203,2219],"table",{},[2204,2205,2206],"thead",{},[2207,2208,2209,2213,2216],"tr",{},[2210,2211,2212],"th",{},"Hook",[2210,2214,2215],{},"When",[2210,2217,2218],{},"Use it for",[2220,2221,2222,2239,2254,2267,2287,2300,2313,2326],"tbody",{},[2207,2223,2224,2230,2233],{},[2225,2226,2227],"td",{},[614,2228,2229],{},"setup(ctx)",[2225,2231,2232],{},"Once when registered",[2225,2234,2235,2236,2238],{},"Read ",[614,2237,975],{},", set up shared state",[2207,2240,2241,2246,2249],{},[2225,2242,2243],{},[614,2244,2245],{},"onRequestStart(ctx)",[2225,2247,2248],{},"Each request, before any handler runs",[2225,2250,2251,2252],{},"Pull values from headers into ",[614,2253,901],{},[2207,2255,2256,2261,2264],{},[2225,2257,2258],{},[614,2259,2260],{},"enrich(ctx)",[2225,2262,2263],{},"Every event, before drain",[2225,2265,2266],{},"Add derived fields (geo, deploy id…)",[2207,2268,2269,2274,2277],{},[2225,2270,2271],{},[614,2272,2273],{},"keep(ctx)",[2225,2275,2276],{},"Tail sampling decision",[2225,2278,2279,2280,668,2283,2286],{},"Force-keep based on outcome (",[614,2281,2282],{},"status >= 400",[614,2284,2285],{},"duration > 500",", …)",[2207,2288,2289,2294,2297],{},[2225,2290,2291],{},[614,2292,2293],{},"drain(ctx)",[2225,2295,2296],{},"Every emitted event",[2225,2298,2299],{},"Side-effect: alert, mirror to a queue, etc.",[2207,2301,2302,2307,2310],{},[2225,2303,2304],{},[614,2305,2306],{},"onRequestFinish(ctx)",[2225,2308,2309],{},"After response",[2225,2311,2312],{},"Per-request post-processing",[2207,2314,2315,2320,2323],{},[2225,2316,2317],{},[614,2318,2319],{},"onClientLog(ctx)",[2225,2321,2322],{},"Browser-submitted event hits the ingest endpoint",[2225,2324,2325],{},"Observe \u002F reject client traffic",[2207,2327,2328,2333,2336],{},[2225,2329,2330],{},[614,2331,2332],{},"extendLogger(logger)",[2225,2334,2335],{},"Each request",[2225,2337,2338,2339,687],{},"Add custom methods (e.g. ",[614,2340,2341],{},"logger.audit.refund()",[611,2343,2344,2345,2348,2349,904],{},"Every hook is ",[619,2346,2347],{},"optional",". A plugin can implement any subset. The full type lives in ",[627,2350,2353],{"href":2351,"rel":2352},"https:\u002F\u002Fgithub.com\u002Fevloghq\u002Fevlog\u002Fblob\u002Fmain\u002Fpackages\u002Fevlog\u002Fsrc\u002Fshared\u002Fplugin.ts",[729],[614,2354,2355],{},"packages\u002Fevlog\u002Fsrc\u002Fshared\u002Fplugin.ts",[731,2357,2359],{"id":2358},"a-multi-hook-example","A multi-hook example",[611,2361,2362,2363,2366,2367,668,2370,2372,2373,817],{},"Plugins shine when several concerns share state. Here, a single ",[614,2364,2365],{},"request-metrics"," plugin tracks per-request timing through ",[614,2368,2369],{},"setup",[614,2371,667],{},", and ",[614,2374,674],{},[736,2376,2378],{"className":738,"code":2377,"language":740,"meta":741,"style":741},"import { definePlugin } from 'evlog\u002Ftoolkit'\n\nexport const requestMetricsPlugin = definePlugin({\n  name: 'request-metrics',\n\n  setup({ env }) {\n    statsd.init({ service: env.service })\n  },\n\n  enrich({ event }) {\n    if (event.durationMs !== undefined) event.tier = event.durationMs > 1000 ? 'slow' : 'fast'\n  },\n\n  drain({ event }) {\n    if (event.durationMs !== undefined) {\n      statsd.timing('http.request', event.durationMs, { path: event.path as string })\n    }\n  },\n\n  onRequestStart({ logger, request }) {\n    logger.set({ trace: { startedAt: Date.now() } })\n  },\n\n  onRequestFinish({ event, durationMs }) {\n    if (event && (event.level === 'error' || durationMs > 5000)) {\n      \u002F\u002F alert \u002F forward \u002F etc.\n    }\n  },\n})\n",[614,2379,2380,2399,2403,2420,2434,2438,2452,2481,2485,2489,2501,2565,2569,2574,2588,2609,2663,2669,2674,2679,2697,2740,2745,2750,2769,2815,2822,2827,2832],{"__ignoreMap":741},[745,2381,2382,2384,2386,2388,2390,2392,2394,2397],{"class":747,"line":748},[745,2383,752],{"class":751},[745,2385,756],{"class":755},[745,2387,760],{"class":759},[745,2389,763],{"class":755},[745,2391,766],{"class":751},[745,2393,769],{"class":755},[745,2395,2396],{"class":772},"evlog\u002Ftoolkit",[745,2398,775],{"class":755},[745,2400,2401],{"class":747,"line":778},[745,2402,782],{"emptyLinePlaceholder":781},[745,2404,2405,2407,2409,2412,2414,2416,2418],{"class":747,"line":785},[745,2406,788],{"class":751},[745,2408,792],{"class":791},[745,2410,2411],{"class":759}," requestMetricsPlugin ",[745,2413,798],{"class":755},[745,2415,760],{"class":801},[745,2417,804],{"class":759},[745,2419,807],{"class":755},[745,2421,2422,2424,2426,2428,2430,2432],{"class":747,"line":810},[745,2423,814],{"class":813},[745,2425,817],{"class":755},[745,2427,769],{"class":755},[745,2429,2365],{"class":772},[745,2431,825],{"class":755},[745,2433,828],{"class":755},[745,2435,2436],{"class":747,"line":831},[745,2437,782],{"emptyLinePlaceholder":781},[745,2439,2440,2443,2445,2448,2450],{"class":747,"line":856},[745,2441,2442],{"class":813},"  setup",[745,2444,837],{"class":755},[745,2446,2447],{"class":840}," env",[745,2449,850],{"class":755},[745,2451,853],{"class":755},[745,2453,2454,2457,2459,2461,2463,2465,2468,2470,2472,2474,2477,2479],{"class":747,"line":886},[745,2455,2456],{"class":759},"    statsd",[745,2458,904],{"class":755},[745,2460,94],{"class":801},[745,2462,804],{"class":813},[745,2464,912],{"class":755},[745,2466,2467],{"class":813}," service",[745,2469,817],{"class":755},[745,2471,2447],{"class":759},[745,2473,904],{"class":755},[745,2475,2476],{"class":759},"service",[745,2478,763],{"class":755},[745,2480,933],{"class":813},[745,2482,2483],{"class":747,"line":936},[745,2484,939],{"class":755},[745,2486,2487],{"class":747,"line":942},[745,2488,782],{"emptyLinePlaceholder":781},[745,2490,2491,2493,2495,2497,2499],{"class":747,"line":957},[745,2492,945],{"class":813},[745,2494,837],{"class":755},[745,2496,950],{"class":840},[745,2498,850],{"class":755},[745,2500,853],{"class":755},[745,2502,2503,2505,2507,2510,2512,2515,2518,2521,2523,2525,2527,2530,2532,2534,2536,2538,2541,2545,2548,2550,2553,2555,2558,2560,2563],{"class":747,"line":983},[745,2504,889],{"class":751},[745,2506,892],{"class":813},[745,2508,2509],{"class":759},"event",[745,2511,904],{"class":755},[745,2513,2514],{"class":759},"durationMs",[745,2516,2517],{"class":755}," !==",[745,2519,2520],{"class":755}," undefined",[745,2522,898],{"class":813},[745,2524,2509],{"class":759},[745,2526,904],{"class":755},[745,2528,2529],{"class":759},"tier",[745,2531,865],{"class":755},[745,2533,950],{"class":759},[745,2535,904],{"class":755},[745,2537,2514],{"class":759},[745,2539,2540],{"class":755}," >",[745,2542,2544],{"class":2543},"sbssI"," 1000",[745,2546,2547],{"class":755}," ?",[745,2549,769],{"class":755},[745,2551,2552],{"class":772},"slow",[745,2554,825],{"class":755},[745,2556,2557],{"class":755}," :",[745,2559,769],{"class":755},[745,2561,2562],{"class":772},"fast",[745,2564,775],{"class":755},[745,2566,2567],{"class":747,"line":988},[745,2568,939],{"class":755},[745,2570,2572],{"class":747,"line":2571},13,[745,2573,782],{"emptyLinePlaceholder":781},[745,2575,2577,2580,2582,2584,2586],{"class":747,"line":2576},14,[745,2578,2579],{"class":813},"  drain",[745,2581,837],{"class":755},[745,2583,950],{"class":840},[745,2585,850],{"class":755},[745,2587,853],{"class":755},[745,2589,2591,2593,2595,2597,2599,2601,2603,2605,2607],{"class":747,"line":2590},15,[745,2592,889],{"class":751},[745,2594,892],{"class":813},[745,2596,2509],{"class":759},[745,2598,904],{"class":755},[745,2600,2514],{"class":759},[745,2602,2517],{"class":755},[745,2604,2520],{"class":755},[745,2606,898],{"class":813},[745,2608,807],{"class":755},[745,2610,2612,2615,2617,2620,2622,2624,2627,2629,2631,2633,2635,2637,2639,2641,2644,2646,2648,2650,2653,2656,2659,2661],{"class":747,"line":2611},16,[745,2613,2614],{"class":759},"      statsd",[745,2616,904],{"class":755},[745,2618,2619],{"class":801},"timing",[745,2621,804],{"class":813},[745,2623,825],{"class":755},[745,2625,2626],{"class":772},"http.request",[745,2628,825],{"class":755},[745,2630,844],{"class":755},[745,2632,950],{"class":759},[745,2634,904],{"class":755},[745,2636,2514],{"class":759},[745,2638,844],{"class":755},[745,2640,756],{"class":755},[745,2642,2643],{"class":813}," path",[745,2645,817],{"class":755},[745,2647,950],{"class":759},[745,2649,904],{"class":755},[745,2651,2652],{"class":759},"path",[745,2654,2655],{"class":751}," as",[745,2657,2658],{"class":1568}," string",[745,2660,763],{"class":755},[745,2662,933],{"class":813},[745,2664,2666],{"class":747,"line":2665},17,[745,2667,2668],{"class":755},"    }\n",[745,2670,2672],{"class":747,"line":2671},18,[745,2673,939],{"class":755},[745,2675,2677],{"class":747,"line":2676},19,[745,2678,782],{"emptyLinePlaceholder":781},[745,2680,2682,2684,2686,2688,2690,2693,2695],{"class":747,"line":2681},20,[745,2683,834],{"class":813},[745,2685,837],{"class":755},[745,2687,841],{"class":840},[745,2689,844],{"class":755},[745,2691,2692],{"class":840}," request",[745,2694,850],{"class":755},[745,2696,853],{"class":755},[745,2698,2700,2703,2705,2707,2709,2711,2714,2716,2718,2721,2723,2726,2728,2731,2734,2736,2738],{"class":747,"line":2699},21,[745,2701,2702],{"class":759},"    logger",[745,2704,904],{"class":755},[745,2706,907],{"class":801},[745,2708,804],{"class":813},[745,2710,912],{"class":755},[745,2712,2713],{"class":813}," trace",[745,2715,817],{"class":755},[745,2717,756],{"class":755},[745,2719,2720],{"class":813}," startedAt",[745,2722,817],{"class":755},[745,2724,2725],{"class":759}," Date",[745,2727,904],{"class":755},[745,2729,2730],{"class":801},"now",[745,2732,2733],{"class":813},"() ",[745,2735,991],{"class":755},[745,2737,763],{"class":755},[745,2739,933],{"class":813},[745,2741,2743],{"class":747,"line":2742},22,[745,2744,939],{"class":755},[745,2746,2748],{"class":747,"line":2747},23,[745,2749,782],{"emptyLinePlaceholder":781},[745,2751,2753,2756,2758,2760,2762,2765,2767],{"class":747,"line":2752},24,[745,2754,2755],{"class":813},"  onRequestFinish",[745,2757,837],{"class":755},[745,2759,950],{"class":840},[745,2761,844],{"class":755},[745,2763,2764],{"class":840}," durationMs",[745,2766,850],{"class":755},[745,2768,853],{"class":755},[745,2770,2772,2774,2776,2778,2781,2783,2785,2787,2790,2793,2795,2798,2800,2803,2805,2807,2810,2813],{"class":747,"line":2771},25,[745,2773,889],{"class":751},[745,2775,892],{"class":813},[745,2777,2509],{"class":759},[745,2779,2780],{"class":755}," &&",[745,2782,892],{"class":813},[745,2784,2509],{"class":759},[745,2786,904],{"class":755},[745,2788,2789],{"class":759},"level",[745,2791,2792],{"class":755}," ===",[745,2794,769],{"class":755},[745,2796,2797],{"class":772},"error",[745,2799,825],{"class":755},[745,2801,2802],{"class":755}," ||",[745,2804,2764],{"class":759},[745,2806,2540],{"class":755},[745,2808,2809],{"class":2543}," 5000",[745,2811,2812],{"class":813},")) ",[745,2814,807],{"class":755},[745,2816,2818],{"class":747,"line":2817},26,[745,2819,2821],{"class":2820},"sHwdD","      \u002F\u002F alert \u002F forward \u002F etc.\n",[745,2823,2825],{"class":747,"line":2824},27,[745,2826,2668],{"class":755},[745,2828,2830],{"class":747,"line":2829},28,[745,2831,939],{"class":755},[745,2833,2835,2837],{"class":747,"line":2834},29,[745,2836,991],{"class":755},[745,2838,933],{"class":759},[731,2840,2842],{"id":2841},"sugar-plugins","Sugar plugins",[611,2844,2845,2846,2848,2849,2851],{},"For single-hook extensions, the toolkit offers ",[614,2847,637],{}," and ",[614,2850,631],{}," wrappers:",[736,2853,2857],{"className":2854,"code":2855,"language":2856,"meta":741,"style":741},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { drainPlugin, enricherPlugin } from 'evlog\u002Ftoolkit'\n\nconst drainOnly = drainPlugin('axiom', createAxiomDrain())\nconst enricherOnly = enricherPlugin('user-agent', createUserAgentEnricher())\n","typescript",[614,2858,2859,2883,2887,2915],{"__ignoreMap":741},[745,2860,2861,2863,2865,2868,2870,2873,2875,2877,2879,2881],{"class":747,"line":748},[745,2862,752],{"class":751},[745,2864,756],{"class":755},[745,2866,2867],{"class":759}," drainPlugin",[745,2869,844],{"class":755},[745,2871,2872],{"class":759}," enricherPlugin",[745,2874,763],{"class":755},[745,2876,766],{"class":751},[745,2878,769],{"class":755},[745,2880,2396],{"class":772},[745,2882,775],{"class":755},[745,2884,2885],{"class":747,"line":778},[745,2886,782],{"emptyLinePlaceholder":781},[745,2888,2889,2891,2894,2896,2898,2900,2902,2905,2907,2909,2912],{"class":747,"line":785},[745,2890,2027],{"class":791},[745,2892,2893],{"class":759}," drainOnly ",[745,2895,798],{"class":755},[745,2897,2867],{"class":801},[745,2899,804],{"class":759},[745,2901,825],{"class":755},[745,2903,2904],{"class":772},"axiom",[745,2906,825],{"class":755},[745,2908,844],{"class":755},[745,2910,2911],{"class":801}," createAxiomDrain",[745,2913,2914],{"class":759},"())\n",[745,2916,2917,2919,2922,2924,2926,2928,2930,2933,2935,2937,2940],{"class":747,"line":810},[745,2918,2027],{"class":791},[745,2920,2921],{"class":759}," enricherOnly ",[745,2923,798],{"class":755},[745,2925,2872],{"class":801},[745,2927,804],{"class":759},[745,2929,825],{"class":755},[745,2931,2932],{"class":772},"user-agent",[745,2934,825],{"class":755},[745,2936,844],{"class":755},[745,2938,2939],{"class":801}," createUserAgentEnricher",[745,2941,2914],{"class":759},[611,2943,2944,2945,2948],{},"These are equivalent to a ",[614,2946,2947],{},"definePlugin({ name, drain | enrich })"," shape but read more clearly when intent is obvious.",[731,2950,2952],{"id":2951},"common-pitfalls","Common pitfalls",[652,2954,2955,2964,2975,2998],{},[655,2956,2957,2960,2961,2963],{},[619,2958,2959],{},"Don't throw from a hook."," The plugin runner catches and logs errors with the plugin name, but a thrown error from ",[614,2962,671],{}," won't propagate the event downstream. Keep hooks defensive.",[655,2965,2966,2971,2972,2974],{},[619,2967,2968,2970],{},[614,2969,674],{}," runs for every event",": not just per-request. If you only care about per-request lifecycle, use ",[614,2973,686],{}," instead.",[655,2976,2977,2982,2983,2986,2987,2990,2991,2994,2995,904],{},[619,2978,2979,2981],{},[614,2980,677],{}," mutates the logger object",": augment ",[614,2984,2985],{},"RequestLogger"," in a ",[614,2988,2989],{},".d.ts"," so ",[614,2992,2993],{},"useLogger(event)"," exposes the new methods to TypeScript. See ",[627,2996,2997],{"href":77},"typed fields",[655,2999,3000,3006,3007,3009],{},[619,3001,3002,3003],{},"Plugins are de-duplicated by ",[614,3004,3005],{},"name",". Re-registering with the same ",[614,3008,3005],{}," replaces the previous version (last registration wins).",[731,3011,3013],{"id":3012},"next-steps","Next steps",[652,3015,3016,3022,3028,3034],{},[655,3017,3018,3021],{},[627,3019,3020],{"href":517},"Custom Enrichers",": single-hook enrichment",[655,3023,3024,3027],{},[627,3025,3026],{"href":530},"Custom Drains",": single-destination output",[655,3029,3030,3033],{},[627,3031,3032],{"href":521},"Tail Sampling",": outcome-aware keep decisions",[655,3035,3036,3039],{},[627,3037,3038],{"href":525},"Identity Headers",": tag every drain request",[3041,3042,3043],"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 .spNyl, html code.shiki .spNyl{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}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 .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 .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 .sBMFI, html code.shiki .sBMFI{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}html pre.shiki code .sbssI, html code.shiki .sbssI{--shiki-light:#F76D47;--shiki-default:#F78C6C;--shiki-dark:#F78C6C}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":741,"searchDepth":778,"depth":778,"links":3045},[3046,3047,3048,3049,3050,3051],{"id":733,"depth":778,"text":734},{"id":1063,"depth":778,"text":2199},{"id":2358,"depth":778,"text":2359},{"id":2841,"depth":778,"text":2842},{"id":2951,"depth":778,"text":2952},{"id":3012,"depth":778,"text":3013},"definePlugin is evlog's canonical extension point: opt into any subset of the lifecycle hooks from one cohesive object.","md",[3055,3058,3059],{"label":3020,"icon":443,"to":517,"color":3056,"variant":3057},"neutral","subtle",{"label":3026,"icon":532,"to":530,"color":3056,"variant":3057},{"label":3032,"icon":69,"to":521,"color":3056,"variant":3057},{},{"title":512,"icon":487},{"title":512,"description":3052},"SiYv2AyfnAgGXNo5QLny9kdgTP5r4rTZ55zPD-rawts",[3065,3067],{"title":415,"path":508,"stem":509,"description":3066,"icon":510,"children":-1},"Concrete copy-paste recipes — build your own minimal devtool, pipe to curl + jq, replay history then go live, and aggregate on the consumer side.",{"title":516,"path":517,"stem":518,"description":3068,"icon":443,"children":-1},"Write an enricher that adds deployment metadata, tenant ids, feature flags, or anything computed. Error isolation and merging are handled.",1791070326963]