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It's the right tool when you want a field on every event without touching every call site — geo, user agent, trace context, deploy id, tenant id, feature flags, performance tier.",[535,544,545,546,550,551,554,555,558],{},"Use ",[547,548,549],"code",{},"defineEnricher"," from ",[547,552,553],{},"evlog\u002Ftoolkit"," — provide a single ",[547,556,557],{},"compute()"," function returning the value you want to merge into the event, and the toolkit handles error isolation, undefined skipping, and the merge step. Every built-in enricher is built on this same factory.",[560,561,564,567,649],"prompt",{":actions":562,"description":563,"icon":334},"[\"copy\",\"cursor\",\"claude\"]","Write a custom evlog enricher",[535,565,566],{},"Write a custom evlog enricher that adds derived context to every wide event.",[568,569,570,578,587,611,618,623,634,642],"ul",{},[571,572,545,573,550,575,577],"li",{},[547,574,549],{},[547,576,553],{}," — never write the merge \u002F error \u002F undefined logic by hand",[571,579,580,581,584,585],{},"Pass ",[547,582,583],{},"{ name, field, compute }"," to ",[547,586,549],{},[571,588,589,592,593,596,597,596,600,596,603,606,607,610],{},[547,590,591],{},"compute(ctx)"," reads from ",[547,594,595],{},"ctx.headers"," \u002F ",[547,598,599],{},"ctx.request",[547,601,602],{},"ctx.response",[547,604,605],{},"ctx.event"," and returns the value to merge (or ",[547,608,609],{},"undefined"," to skip)",[571,612,613,614,617],{},"Keep ",[547,615,616],{},"compute"," pure and fast: no awaitable I\u002FO on the hot path; cache anything expensive at module scope",[571,619,620,622],{},[547,621,549],{}," already handles: error isolation (errors logged, never thrown), single-field merge, overwrite option",[571,624,625,626,629,630,633],{},"Wire the enricher into my framework via the ",[547,627,628],{},"enrich"," option (middleware) or ",[547,631,632],{},"initLogger.enrichers"," (standalone)",[571,635,636,637,550,640],{},"For multiple enrichers, use ",[547,638,639],{},"composeEnrichers([...])",[547,641,553],{},[571,643,644,645,648],{},"For multi-hook features (enrich + drain side-effect, etc.), use ",[547,646,647],{},"definePlugin"," instead",[535,650,651,652,658,659],{},"Docs: ",[653,654,655],"a",{"href":655,"rel":656},"https:\u002F\u002Fwww.evlog.dev\u002Fextend\u002Fcustom-enrichers",[657],"nofollow","\nBuilt-in: ",[653,660,661],{"href":661,"rel":662},"https:\u002F\u002Fwww.evlog.dev\u002Fuse-cases\u002Fenrichers",[657],[664,665,667],"h2",{"id":666},"basic-example","Basic example",[535,669,670],{},"Add deployment metadata to every event. The enricher is the same function everywhere — only the wiring step differs per framework.",[672,673,674,848,1025,1193],"code-group",{},[675,676,682],"pre",{"className":677,"code":678,"filename":679,"language":680,"meta":681,"style":681},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","\u002F\u002F server\u002Fplugins\u002Fevlog-enrich.ts\nexport default defineNitroPlugin((nitroApp) => {\n  nitroApp.hooks.hook('evlog:enrich', (ctx) => {\n    ctx.event.deploymentId = process.env.DEPLOYMENT_ID\n    ctx.event.deployedBy = process.env.DEPLOYED_BY\n  })\n})\n","Nuxt \u002F Nitro","typescript","",[547,683,684,693,728,772,804,831,840],{"__ignoreMap":681},[685,686,689],"span",{"class":687,"line":688},"line",1,[685,690,692],{"class":691},"sHwdD","\u002F\u002F server\u002Fplugins\u002Fevlog-enrich.ts\n",[685,694,696,700,703,707,711,714,718,721,725],{"class":687,"line":695},2,[685,697,699],{"class":698},"s7zQu","export",[685,701,702],{"class":698}," default",[685,704,706],{"class":705},"s2Zo4"," defineNitroPlugin",[685,708,710],{"class":709},"sTEyZ","(",[685,712,710],{"class":713},"sMK4o",[685,715,717],{"class":716},"sHdIc","nitroApp",[685,719,720],{"class":713},")",[685,722,724],{"class":723},"spNyl"," =>",[685,726,727],{"class":713}," {\n",[685,729,731,734,737,740,742,745,748,751,755,757,760,763,766,768,770],{"class":687,"line":730},3,[685,732,733],{"class":709},"  nitroApp",[685,735,736],{"class":713},".",[685,738,739],{"class":709},"hooks",[685,741,736],{"class":713},[685,743,744],{"class":705},"hook",[685,746,710],{"class":747},"swJcz",[685,749,750],{"class":713},"'",[685,752,754],{"class":753},"sfazB","evlog:enrich",[685,756,750],{"class":713},[685,758,759],{"class":713},",",[685,761,762],{"class":713}," (",[685,764,765],{"class":716},"ctx",[685,767,720],{"class":713},[685,769,724],{"class":723},[685,771,727],{"class":713},[685,773,775,778,780,783,785,788,791,794,796,799,801],{"class":687,"line":774},4,[685,776,777],{"class":709},"    ctx",[685,779,736],{"class":713},[685,781,782],{"class":709},"event",[685,784,736],{"class":713},[685,786,787],{"class":709},"deploymentId",[685,789,790],{"class":713}," =",[685,792,793],{"class":709}," process",[685,795,736],{"class":713},[685,797,798],{"class":709},"env",[685,800,736],{"class":713},[685,802,803],{"class":709},"DEPLOYMENT_ID\n",[685,805,807,809,811,813,815,818,820,822,824,826,828],{"class":687,"line":806},5,[685,808,777],{"class":709},[685,810,736],{"class":713},[685,812,782],{"class":709},[685,814,736],{"class":713},[685,816,817],{"class":709},"deployedBy",[685,819,790],{"class":713},[685,821,793],{"class":709},[685,823,736],{"class":713},[685,825,798],{"class":709},[685,827,736],{"class":713},[685,829,830],{"class":709},"DEPLOYED_BY\n",[685,832,834,837],{"class":687,"line":833},6,[685,835,836],{"class":713},"  }",[685,838,839],{"class":747},")\n",[685,841,843,846],{"class":687,"line":842},7,[685,844,845],{"class":713},"}",[685,847,839],{"class":709},[675,849,851],{"className":677,"code":850,"filename":235,"language":680,"meta":681,"style":681},"\u002F\u002F lib\u002Fevlog.ts\nimport { createEvlog } from 'evlog\u002Fnext'\n\nexport const { withEvlog, useLogger, log, createError } = createEvlog({\n  service: 'my-app',\n  enrich: (ctx) => {\n    ctx.event.deploymentId = process.env.DEPLOYMENT_ID\n    ctx.event.deployedBy = process.env.DEPLOYED_BY\n  },\n})\n",[547,852,853,858,884,890,928,946,963,987,1012,1018],{"__ignoreMap":681},[685,854,855],{"class":687,"line":688},[685,856,857],{"class":691},"\u002F\u002F lib\u002Fevlog.ts\n",[685,859,860,863,866,869,872,875,878,881],{"class":687,"line":695},[685,861,862],{"class":698},"import",[685,864,865],{"class":713}," {",[685,867,868],{"class":709}," createEvlog",[685,870,871],{"class":713}," }",[685,873,874],{"class":698}," from",[685,876,877],{"class":713}," '",[685,879,880],{"class":753},"evlog\u002Fnext",[685,882,883],{"class":713},"'\n",[685,885,886],{"class":687,"line":730},[685,887,889],{"emptyLinePlaceholder":888},true,"\n",[685,891,892,894,897,899,902,904,907,909,912,914,917,919,921,923,925],{"class":687,"line":774},[685,893,699],{"class":698},[685,895,896],{"class":723}," const",[685,898,865],{"class":713},[685,900,901],{"class":709}," withEvlog",[685,903,759],{"class":713},[685,905,906],{"class":709}," useLogger",[685,908,759],{"class":713},[685,910,911],{"class":709}," log",[685,913,759],{"class":713},[685,915,916],{"class":709}," createError ",[685,918,845],{"class":713},[685,920,790],{"class":713},[685,922,868],{"class":705},[685,924,710],{"class":709},[685,926,927],{"class":713},"{\n",[685,929,930,933,936,938,941,943],{"class":687,"line":806},[685,931,932],{"class":747},"  service",[685,934,935],{"class":713},":",[685,937,877],{"class":713},[685,939,940],{"class":753},"my-app",[685,942,750],{"class":713},[685,944,945],{"class":713},",\n",[685,947,948,951,953,955,957,959,961],{"class":687,"line":833},[685,949,950],{"class":705},"  enrich",[685,952,935],{"class":713},[685,954,762],{"class":713},[685,956,765],{"class":716},[685,958,720],{"class":713},[685,960,724],{"class":723},[685,962,727],{"class":713},[685,964,965,967,969,971,973,975,977,979,981,983,985],{"class":687,"line":842},[685,966,777],{"class":709},[685,968,736],{"class":713},[685,970,782],{"class":709},[685,972,736],{"class":713},[685,974,787],{"class":709},[685,976,790],{"class":713},[685,978,793],{"class":709},[685,980,736],{"class":713},[685,982,798],{"class":709},[685,984,736],{"class":713},[685,986,803],{"class":709},[685,988,990,992,994,996,998,1000,1002,1004,1006,1008,1010],{"class":687,"line":989},8,[685,991,777],{"class":709},[685,993,736],{"class":713},[685,995,782],{"class":709},[685,997,736],{"class":713},[685,999,817],{"class":709},[685,1001,790],{"class":713},[685,1003,793],{"class":709},[685,1005,736],{"class":713},[685,1007,798],{"class":709},[685,1009,736],{"class":713},[685,1011,830],{"class":709},[685,1013,1015],{"class":687,"line":1014},9,[685,1016,1017],{"class":713},"  },\n",[685,1019,1021,1023],{"class":687,"line":1020},10,[685,1022,845],{"class":713},[685,1024,839],{"class":709},[675,1026,1029],{"className":677,"code":1027,"filename":1028,"language":680,"meta":681,"style":681},"import type { EnrichContext } from 'evlog'\n\nconst deployment = (ctx: EnrichContext) => {\n  ctx.event.deploymentId = process.env.DEPLOYMENT_ID\n  ctx.event.deployedBy = process.env.DEPLOYED_BY\n}\n\napp.use(evlog({ enrichers: [deployment] })) \u002F\u002F Hono \u002F Express \u002F Elysia\n\u002F\u002F await app.register(evlog, { enrichers: [deployment] }) \u002F\u002F Fastify\n\u002F\u002F EvlogModule.forRoot({ enrichers: [deployment] }) \u002F\u002F NestJS\n","Hono \u002F Express \u002F Fastify \u002F Elysia \u002F NestJS",[547,1030,1031,1054,1058,1084,1109,1133,1138,1142,1177,1185],{"__ignoreMap":681},[685,1032,1033,1035,1038,1040,1043,1045,1047,1049,1052],{"class":687,"line":688},[685,1034,862],{"class":698},[685,1036,1037],{"class":698}," type",[685,1039,865],{"class":713},[685,1041,1042],{"class":709}," EnrichContext",[685,1044,871],{"class":713},[685,1046,874],{"class":698},[685,1048,877],{"class":713},[685,1050,1051],{"class":753},"evlog",[685,1053,883],{"class":713},[685,1055,1056],{"class":687,"line":695},[685,1057,889],{"emptyLinePlaceholder":888},[685,1059,1060,1063,1066,1069,1071,1073,1075,1078,1080,1082],{"class":687,"line":730},[685,1061,1062],{"class":723},"const",[685,1064,1065],{"class":709}," deployment ",[685,1067,1068],{"class":713},"=",[685,1070,762],{"class":713},[685,1072,765],{"class":716},[685,1074,935],{"class":713},[685,1076,1042],{"class":1077},"sBMFI",[685,1079,720],{"class":713},[685,1081,724],{"class":723},[685,1083,727],{"class":713},[685,1085,1086,1089,1091,1093,1095,1097,1099,1101,1103,1105,1107],{"class":687,"line":774},[685,1087,1088],{"class":709},"  ctx",[685,1090,736],{"class":713},[685,1092,782],{"class":709},[685,1094,736],{"class":713},[685,1096,787],{"class":709},[685,1098,790],{"class":713},[685,1100,793],{"class":709},[685,1102,736],{"class":713},[685,1104,798],{"class":709},[685,1106,736],{"class":713},[685,1108,803],{"class":709},[685,1110,1111,1113,1115,1117,1119,1121,1123,1125,1127,1129,1131],{"class":687,"line":806},[685,1112,1088],{"class":709},[685,1114,736],{"class":713},[685,1116,782],{"class":709},[685,1118,736],{"class":713},[685,1120,817],{"class":709},[685,1122,790],{"class":713},[685,1124,793],{"class":709},[685,1126,736],{"class":713},[685,1128,798],{"class":709},[685,1130,736],{"class":713},[685,1132,830],{"class":709},[685,1134,1135],{"class":687,"line":833},[685,1136,1137],{"class":713},"}\n",[685,1139,1140],{"class":687,"line":842},[685,1141,889],{"emptyLinePlaceholder":888},[685,1143,1144,1147,1149,1152,1154,1156,1158,1161,1164,1166,1169,1171,1174],{"class":687,"line":989},[685,1145,1146],{"class":709},"app",[685,1148,736],{"class":713},[685,1150,1151],{"class":705},"use",[685,1153,710],{"class":709},[685,1155,1051],{"class":705},[685,1157,710],{"class":709},[685,1159,1160],{"class":713},"{",[685,1162,1163],{"class":747}," enrichers",[685,1165,935],{"class":713},[685,1167,1168],{"class":709}," [deployment] ",[685,1170,845],{"class":713},[685,1172,1173],{"class":709},")) ",[685,1175,1176],{"class":691},"\u002F\u002F Hono \u002F Express \u002F Elysia\n",[685,1178,1179,1182],{"class":687,"line":1014},[685,1180,1181],{"class":691},"\u002F\u002F await app.register(evlog, { enrichers: [deployment] })",[685,1183,1184],{"class":691}," \u002F\u002F Fastify\n",[685,1186,1187,1190],{"class":687,"line":1020},[685,1188,1189],{"class":691},"\u002F\u002F EvlogModule.forRoot({ enrichers: [deployment] })",[685,1191,1192],{"class":691}," \u002F\u002F NestJS\n",[675,1194,1196],{"className":677,"code":1195,"filename":290,"language":680,"meta":681,"style":681},"\u002F\u002F index.ts\nimport type { EnrichContext } from 'evlog'\nimport { initLogger } from 'evlog'\n\nconst deployment = (ctx: EnrichContext) => {\n  ctx.event.deploymentId = process.env.DEPLOYMENT_ID\n  ctx.event.deployedBy = process.env.DEPLOYED_BY\n}\n\ninitLogger({ enrichers: [deployment] })\n",[547,1197,1198,1203,1223,1242,1246,1268,1292,1316,1320,1324],{"__ignoreMap":681},[685,1199,1200],{"class":687,"line":688},[685,1201,1202],{"class":691},"\u002F\u002F index.ts\n",[685,1204,1205,1207,1209,1211,1213,1215,1217,1219,1221],{"class":687,"line":695},[685,1206,862],{"class":698},[685,1208,1037],{"class":698},[685,1210,865],{"class":713},[685,1212,1042],{"class":709},[685,1214,871],{"class":713},[685,1216,874],{"class":698},[685,1218,877],{"class":713},[685,1220,1051],{"class":753},[685,1222,883],{"class":713},[685,1224,1225,1227,1229,1232,1234,1236,1238,1240],{"class":687,"line":730},[685,1226,862],{"class":698},[685,1228,865],{"class":713},[685,1230,1231],{"class":709}," initLogger",[685,1233,871],{"class":713},[685,1235,874],{"class":698},[685,1237,877],{"class":713},[685,1239,1051],{"class":753},[685,1241,883],{"class":713},[685,1243,1244],{"class":687,"line":774},[685,1245,889],{"emptyLinePlaceholder":888},[685,1247,1248,1250,1252,1254,1256,1258,1260,1262,1264,1266],{"class":687,"line":806},[685,1249,1062],{"class":723},[685,1251,1065],{"class":709},[685,1253,1068],{"class":713},[685,1255,762],{"class":713},[685,1257,765],{"class":716},[685,1259,935],{"class":713},[685,1261,1042],{"class":1077},[685,1263,720],{"class":713},[685,1265,724],{"class":723},[685,1267,727],{"class":713},[685,1269,1270,1272,1274,1276,1278,1280,1282,1284,1286,1288,1290],{"class":687,"line":833},[685,1271,1088],{"class":709},[685,1273,736],{"class":713},[685,1275,782],{"class":709},[685,1277,736],{"class":713},[685,1279,787],{"class":709},[685,1281,790],{"class":713},[685,1283,793],{"class":709},[685,1285,736],{"class":713},[685,1287,798],{"class":709},[685,1289,736],{"class":713},[685,1291,803],{"class":709},[685,1293,1294,1296,1298,1300,1302,1304,1306,1308,1310,1312,1314],{"class":687,"line":842},[685,1295,1088],{"class":709},[685,1297,736],{"class":713},[685,1299,782],{"class":709},[685,1301,736],{"class":713},[685,1303,817],{"class":709},[685,1305,790],{"class":713},[685,1307,793],{"class":709},[685,1309,736],{"class":713},[685,1311,798],{"class":709},[685,1313,736],{"class":713},[685,1315,830],{"class":709},[685,1317,1318],{"class":687,"line":989},[685,1319,1137],{"class":713},[685,1321,1322],{"class":687,"line":1014},[685,1323,889],{"emptyLinePlaceholder":888},[685,1325,1326,1329,1331,1333,1335,1337,1339,1341],{"class":687,"line":1020},[685,1327,1328],{"class":705},"initLogger",[685,1330,710],{"class":709},[685,1332,1160],{"class":713},[685,1334,1163],{"class":747},[685,1336,935],{"class":713},[685,1338,1168],{"class":709},[685,1340,845],{"class":713},[685,1342,839],{"class":709},[664,1344,1346],{"id":1345},"enrichcontext","EnrichContext",[535,1348,1349,1350,1352,1353,935],{},"The ",[547,1351,754],{}," hook receives an ",[547,1354,1346],{},[675,1356,1359],{"className":677,"code":1357,"filename":1358,"language":680,"meta":681,"style":681},"interface EnrichContext {\n  \u002F** The emitted wide event (mutable) *\u002F\n  event: WideEvent\n  \u002F** Request metadata *\u002F\n  request?: {\n    method?: string\n    path?: string\n    requestId?: string\n  }\n  \u002F** Safe HTTP request headers (sensitive headers filtered out) *\u002F\n  headers?: Record\u003Cstring, string>\n  \u002F** Response metadata *\u002F\n  response?: {\n    status?: number\n    headers?: Record\u003Cstring, string>\n  }\n}\n","enrich-context.ts",[547,1360,1361,1370,1375,1385,1390,1400,1410,1419,1428,1433,1438,1463,1469,1479,1490,1510,1515],{"__ignoreMap":681},[685,1362,1363,1366,1368],{"class":687,"line":688},[685,1364,1365],{"class":723},"interface",[685,1367,1042],{"class":1077},[685,1369,727],{"class":713},[685,1371,1372],{"class":687,"line":695},[685,1373,1374],{"class":691},"  \u002F** The emitted wide event (mutable) *\u002F\n",[685,1376,1377,1380,1382],{"class":687,"line":730},[685,1378,1379],{"class":747},"  event",[685,1381,935],{"class":713},[685,1383,1384],{"class":1077}," WideEvent\n",[685,1386,1387],{"class":687,"line":774},[685,1388,1389],{"class":691},"  \u002F** Request metadata *\u002F\n",[685,1391,1392,1395,1398],{"class":687,"line":806},[685,1393,1394],{"class":747},"  request",[685,1396,1397],{"class":713},"?:",[685,1399,727],{"class":713},[685,1401,1402,1405,1407],{"class":687,"line":833},[685,1403,1404],{"class":747},"    method",[685,1406,1397],{"class":713},[685,1408,1409],{"class":1077}," string\n",[685,1411,1412,1415,1417],{"class":687,"line":842},[685,1413,1414],{"class":747},"    path",[685,1416,1397],{"class":713},[685,1418,1409],{"class":1077},[685,1420,1421,1424,1426],{"class":687,"line":989},[685,1422,1423],{"class":747},"    requestId",[685,1425,1397],{"class":713},[685,1427,1409],{"class":1077},[685,1429,1430],{"class":687,"line":1014},[685,1431,1432],{"class":713},"  }\n",[685,1434,1435],{"class":687,"line":1020},[685,1436,1437],{"class":691},"  \u002F** Safe HTTP request headers (sensitive headers filtered out) *\u002F\n",[685,1439,1441,1444,1446,1449,1452,1455,1457,1460],{"class":687,"line":1440},11,[685,1442,1443],{"class":747},"  headers",[685,1445,1397],{"class":713},[685,1447,1448],{"class":1077}," Record",[685,1450,1451],{"class":713},"\u003C",[685,1453,1454],{"class":1077},"string",[685,1456,759],{"class":713},[685,1458,1459],{"class":1077}," string",[685,1461,1462],{"class":713},">\n",[685,1464,1466],{"class":687,"line":1465},12,[685,1467,1468],{"class":691},"  \u002F** Response metadata *\u002F\n",[685,1470,1472,1475,1477],{"class":687,"line":1471},13,[685,1473,1474],{"class":747},"  response",[685,1476,1397],{"class":713},[685,1478,727],{"class":713},[685,1480,1482,1485,1487],{"class":687,"line":1481},14,[685,1483,1484],{"class":747},"    status",[685,1486,1397],{"class":713},[685,1488,1489],{"class":1077}," number\n",[685,1491,1493,1496,1498,1500,1502,1504,1506,1508],{"class":687,"line":1492},15,[685,1494,1495],{"class":747},"    headers",[685,1497,1397],{"class":713},[685,1499,1448],{"class":1077},[685,1501,1451],{"class":713},[685,1503,1454],{"class":1077},[685,1505,759],{"class":713},[685,1507,1459],{"class":1077},[685,1509,1462],{"class":713},[685,1511,1513],{"class":687,"line":1512},16,[685,1514,1432],{"class":713},[685,1516,1518],{"class":687,"line":1517},17,[685,1519,1137],{"class":713},[1521,1522,1524,1527,1528,1531,1532,1531,1535,1538],"callout",{"color":1523,"icon":379},"success",[539,1525,1526],{},"Security:"," Sensitive headers (",[547,1529,1530],{},"authorization",", ",[547,1533,1534],{},"cookie",[547,1536,1537],{},"x-api-key",", etc.) are automatically filtered and never passed to enrichers.",[664,1540,1542,1543],{"id":1541},"recommended-pattern-defineenricher","Recommended pattern — ",[547,1544,549],{},[535,1546,1547,1548,1550],{},"Every built-in enricher uses this same factory. Provide ",[547,1549,557],{}," and you're done:",[675,1552,1555],{"className":677,"code":1553,"filename":1554,"language":680,"meta":681,"style":681},"import { defineEnricher, getHeader, type EnricherOptions } from 'evlog\u002Ftoolkit'\n\ninterface TenantInfo {\n  id: string\n  org?: string\n}\n\nexport function createTenantEnricher(options: EnricherOptions & { headerName?: string } = {}) {\n  const headerName = options.headerName ?? 'x-tenant-id'\n\n  return defineEnricher\u003CTenantInfo>({\n    name: 'tenant',\n    field: 'tenant',\n    compute: ({ headers }) => {\n      const id = getHeader(headers, headerName)\n      if (!id) return undefined\n      return { id }\n    },\n  }, options)\n}\n","server\u002Futils\u002Fenrichers.ts",[547,1556,1557,1588,1592,1601,1610,1619,1623,1627,1667,1694,1698,1717,1733,1748,1768,1791,1813,1825,1831,1841],{"__ignoreMap":681},[685,1558,1559,1561,1563,1566,1568,1571,1573,1575,1578,1580,1582,1584,1586],{"class":687,"line":688},[685,1560,862],{"class":698},[685,1562,865],{"class":713},[685,1564,1565],{"class":709}," defineEnricher",[685,1567,759],{"class":713},[685,1569,1570],{"class":709}," getHeader",[685,1572,759],{"class":713},[685,1574,1037],{"class":698},[685,1576,1577],{"class":709}," EnricherOptions",[685,1579,871],{"class":713},[685,1581,874],{"class":698},[685,1583,877],{"class":713},[685,1585,553],{"class":753},[685,1587,883],{"class":713},[685,1589,1590],{"class":687,"line":695},[685,1591,889],{"emptyLinePlaceholder":888},[685,1593,1594,1596,1599],{"class":687,"line":730},[685,1595,1365],{"class":723},[685,1597,1598],{"class":1077}," TenantInfo",[685,1600,727],{"class":713},[685,1602,1603,1606,1608],{"class":687,"line":774},[685,1604,1605],{"class":747},"  id",[685,1607,935],{"class":713},[685,1609,1409],{"class":1077},[685,1611,1612,1615,1617],{"class":687,"line":806},[685,1613,1614],{"class":747},"  org",[685,1616,1397],{"class":713},[685,1618,1409],{"class":1077},[685,1620,1621],{"class":687,"line":833},[685,1622,1137],{"class":713},[685,1624,1625],{"class":687,"line":842},[685,1626,889],{"emptyLinePlaceholder":888},[685,1628,1629,1631,1634,1637,1639,1642,1644,1646,1649,1651,1654,1656,1658,1660,1662,1665],{"class":687,"line":989},[685,1630,699],{"class":698},[685,1632,1633],{"class":723}," function",[685,1635,1636],{"class":705}," createTenantEnricher",[685,1638,710],{"class":713},[685,1640,1641],{"class":716},"options",[685,1643,935],{"class":713},[685,1645,1577],{"class":1077},[685,1647,1648],{"class":713}," &",[685,1650,865],{"class":713},[685,1652,1653],{"class":747}," headerName",[685,1655,1397],{"class":713},[685,1657,1459],{"class":1077},[685,1659,871],{"class":713},[685,1661,790],{"class":713},[685,1663,1664],{"class":713}," {})",[685,1666,727],{"class":713},[685,1668,1669,1672,1674,1676,1679,1681,1684,1687,1689,1692],{"class":687,"line":1014},[685,1670,1671],{"class":723},"  const",[685,1673,1653],{"class":709},[685,1675,790],{"class":713},[685,1677,1678],{"class":709}," options",[685,1680,736],{"class":713},[685,1682,1683],{"class":709},"headerName",[685,1685,1686],{"class":713}," ??",[685,1688,877],{"class":713},[685,1690,1691],{"class":753},"x-tenant-id",[685,1693,883],{"class":713},[685,1695,1696],{"class":687,"line":1020},[685,1697,889],{"emptyLinePlaceholder":888},[685,1699,1700,1703,1705,1707,1710,1713,1715],{"class":687,"line":1440},[685,1701,1702],{"class":698},"  return",[685,1704,1565],{"class":705},[685,1706,1451],{"class":713},[685,1708,1709],{"class":1077},"TenantInfo",[685,1711,1712],{"class":713},">",[685,1714,710],{"class":747},[685,1716,927],{"class":713},[685,1718,1719,1722,1724,1726,1729,1731],{"class":687,"line":1465},[685,1720,1721],{"class":747},"    name",[685,1723,935],{"class":713},[685,1725,877],{"class":713},[685,1727,1728],{"class":753},"tenant",[685,1730,750],{"class":713},[685,1732,945],{"class":713},[685,1734,1735,1738,1740,1742,1744,1746],{"class":687,"line":1471},[685,1736,1737],{"class":747},"    field",[685,1739,935],{"class":713},[685,1741,877],{"class":713},[685,1743,1728],{"class":753},[685,1745,750],{"class":713},[685,1747,945],{"class":713},[685,1749,1750,1753,1755,1758,1761,1764,1766],{"class":687,"line":1481},[685,1751,1752],{"class":705},"    compute",[685,1754,935],{"class":713},[685,1756,1757],{"class":713}," ({",[685,1759,1760],{"class":716}," headers",[685,1762,1763],{"class":713}," })",[685,1765,724],{"class":723},[685,1767,727],{"class":713},[685,1769,1770,1773,1776,1778,1780,1782,1785,1787,1789],{"class":687,"line":1492},[685,1771,1772],{"class":723},"      const",[685,1774,1775],{"class":709}," id",[685,1777,790],{"class":713},[685,1779,1570],{"class":705},[685,1781,710],{"class":747},[685,1783,1784],{"class":709},"headers",[685,1786,759],{"class":713},[685,1788,1653],{"class":709},[685,1790,839],{"class":747},[685,1792,1793,1796,1798,1801,1804,1807,1810],{"class":687,"line":1512},[685,1794,1795],{"class":698},"      if",[685,1797,762],{"class":747},[685,1799,1800],{"class":713},"!",[685,1802,1803],{"class":709},"id",[685,1805,1806],{"class":747},") ",[685,1808,1809],{"class":698},"return",[685,1811,1812],{"class":713}," undefined\n",[685,1814,1815,1818,1820,1822],{"class":687,"line":1517},[685,1816,1817],{"class":698},"      return",[685,1819,865],{"class":713},[685,1821,1775],{"class":709},[685,1823,1824],{"class":713}," }\n",[685,1826,1828],{"class":687,"line":1827},18,[685,1829,1830],{"class":713},"    },\n",[685,1832,1834,1837,1839],{"class":687,"line":1833},19,[685,1835,1836],{"class":713},"  },",[685,1838,1678],{"class":709},[685,1840,839],{"class":747},[685,1842,1844],{"class":687,"line":1843},20,[685,1845,1137],{"class":713},[535,1847,1848,1850],{},[547,1849,549],{}," automatically:",[568,1852,1853,1861,1875],{},[571,1854,1855,1856,1858,1859],{},"skips when ",[547,1857,557],{}," returns ",[547,1860,609],{},[571,1862,1863,1864,1867,1868,1871,1872,720],{},"merges the result into ",[547,1865,1866],{},"ctx.event[field]"," via ",[547,1869,1870],{},"mergeEventField"," (respecting ",[547,1873,1874],{},"options.overwrite",[571,1876,1877,1878,1881],{},"catches errors and logs them as ",[547,1879,1880],{},"[evlog\u002F\u003Cname>]"," instead of breaking the pipeline",[535,1883,1884],{},"Wire it like any other enricher:",[672,1886,1887,2001,2146,2247],{},[675,1888,1890],{"className":677,"code":1889,"filename":679,"language":680,"meta":681,"style":681},"\u002F\u002F server\u002Fplugins\u002Fevlog-enrich.ts\nimport { createTenantEnricher } from '~\u002Fserver\u002Futils\u002Fenrichers'\n\nexport default defineNitroPlugin((nitroApp) => {\n  const enrichTenant = createTenantEnricher({ headerName: 'x-org-id' })\n  nitroApp.hooks.hook('evlog:enrich', enrichTenant)\n})\n",[547,1891,1892,1896,1915,1919,1939,1969,1995],{"__ignoreMap":681},[685,1893,1894],{"class":687,"line":688},[685,1895,692],{"class":691},[685,1897,1898,1900,1902,1904,1906,1908,1910,1913],{"class":687,"line":695},[685,1899,862],{"class":698},[685,1901,865],{"class":713},[685,1903,1636],{"class":709},[685,1905,871],{"class":713},[685,1907,874],{"class":698},[685,1909,877],{"class":713},[685,1911,1912],{"class":753},"~\u002Fserver\u002Futils\u002Fenrichers",[685,1914,883],{"class":713},[685,1916,1917],{"class":687,"line":730},[685,1918,889],{"emptyLinePlaceholder":888},[685,1920,1921,1923,1925,1927,1929,1931,1933,1935,1937],{"class":687,"line":774},[685,1922,699],{"class":698},[685,1924,702],{"class":698},[685,1926,706],{"class":705},[685,1928,710],{"class":709},[685,1930,710],{"class":713},[685,1932,717],{"class":716},[685,1934,720],{"class":713},[685,1936,724],{"class":723},[685,1938,727],{"class":713},[685,1940,1941,1943,1946,1948,1950,1952,1954,1956,1958,1960,1963,1965,1967],{"class":687,"line":806},[685,1942,1671],{"class":723},[685,1944,1945],{"class":709}," enrichTenant",[685,1947,790],{"class":713},[685,1949,1636],{"class":705},[685,1951,710],{"class":747},[685,1953,1160],{"class":713},[685,1955,1653],{"class":747},[685,1957,935],{"class":713},[685,1959,877],{"class":713},[685,1961,1962],{"class":753},"x-org-id",[685,1964,750],{"class":713},[685,1966,871],{"class":713},[685,1968,839],{"class":747},[685,1970,1971,1973,1975,1977,1979,1981,1983,1985,1987,1989,1991,1993],{"class":687,"line":833},[685,1972,733],{"class":709},[685,1974,736],{"class":713},[685,1976,739],{"class":709},[685,1978,736],{"class":713},[685,1980,744],{"class":705},[685,1982,710],{"class":747},[685,1984,750],{"class":713},[685,1986,754],{"class":753},[685,1988,750],{"class":713},[685,1990,759],{"class":713},[685,1992,1945],{"class":709},[685,1994,839],{"class":747},[685,1996,1997,1999],{"class":687,"line":842},[685,1998,845],{"class":713},[685,2000,839],{"class":709},[675,2002,2004],{"className":677,"code":2003,"filename":235,"language":680,"meta":681,"style":681},"\u002F\u002F lib\u002Fevlog.ts\nimport { createEvlog } from 'evlog\u002Fnext'\nimport { createTenantEnricher } from '.\u002Fenrichers'\n\nconst enrichTenant = createTenantEnricher({ headerName: 'x-org-id' })\n\nexport const { withEvlog, useLogger, log, createError } = createEvlog({\n  service: 'my-app',\n  enrich: enrichTenant,\n})\n",[547,2005,2006,2010,2028,2047,2051,2080,2084,2116,2130,2140],{"__ignoreMap":681},[685,2007,2008],{"class":687,"line":688},[685,2009,857],{"class":691},[685,2011,2012,2014,2016,2018,2020,2022,2024,2026],{"class":687,"line":695},[685,2013,862],{"class":698},[685,2015,865],{"class":713},[685,2017,868],{"class":709},[685,2019,871],{"class":713},[685,2021,874],{"class":698},[685,2023,877],{"class":713},[685,2025,880],{"class":753},[685,2027,883],{"class":713},[685,2029,2030,2032,2034,2036,2038,2040,2042,2045],{"class":687,"line":730},[685,2031,862],{"class":698},[685,2033,865],{"class":713},[685,2035,1636],{"class":709},[685,2037,871],{"class":713},[685,2039,874],{"class":698},[685,2041,877],{"class":713},[685,2043,2044],{"class":753},".\u002Fenrichers",[685,2046,883],{"class":713},[685,2048,2049],{"class":687,"line":774},[685,2050,889],{"emptyLinePlaceholder":888},[685,2052,2053,2055,2058,2060,2062,2064,2066,2068,2070,2072,2074,2076,2078],{"class":687,"line":806},[685,2054,1062],{"class":723},[685,2056,2057],{"class":709}," enrichTenant ",[685,2059,1068],{"class":713},[685,2061,1636],{"class":705},[685,2063,710],{"class":709},[685,2065,1160],{"class":713},[685,2067,1653],{"class":747},[685,2069,935],{"class":713},[685,2071,877],{"class":713},[685,2073,1962],{"class":753},[685,2075,750],{"class":713},[685,2077,871],{"class":713},[685,2079,839],{"class":709},[685,2081,2082],{"class":687,"line":833},[685,2083,889],{"emptyLinePlaceholder":888},[685,2085,2086,2088,2090,2092,2094,2096,2098,2100,2102,2104,2106,2108,2110,2112,2114],{"class":687,"line":842},[685,2087,699],{"class":698},[685,2089,896],{"class":723},[685,2091,865],{"class":713},[685,2093,901],{"class":709},[685,2095,759],{"class":713},[685,2097,906],{"class":709},[685,2099,759],{"class":713},[685,2101,911],{"class":709},[685,2103,759],{"class":713},[685,2105,916],{"class":709},[685,2107,845],{"class":713},[685,2109,790],{"class":713},[685,2111,868],{"class":705},[685,2113,710],{"class":709},[685,2115,927],{"class":713},[685,2117,2118,2120,2122,2124,2126,2128],{"class":687,"line":989},[685,2119,932],{"class":747},[685,2121,935],{"class":713},[685,2123,877],{"class":713},[685,2125,940],{"class":753},[685,2127,750],{"class":713},[685,2129,945],{"class":713},[685,2131,2132,2134,2136,2138],{"class":687,"line":1014},[685,2133,950],{"class":747},[685,2135,935],{"class":713},[685,2137,1945],{"class":709},[685,2139,945],{"class":713},[685,2141,2142,2144],{"class":687,"line":1020},[685,2143,845],{"class":713},[685,2145,839],{"class":709},[675,2147,2149],{"className":677,"code":2148,"filename":1028,"language":680,"meta":681,"style":681},"import { createTenantEnricher } from '.\u002Fenrichers'\n\nconst enrichTenant = createTenantEnricher({ headerName: 'x-org-id' })\n\napp.use(evlog({ enrichers: [enrichTenant] }))\n\u002F\u002F await app.register(evlog, { enrichers: [enrichTenant] }) \u002F\u002F Fastify\n\u002F\u002F EvlogModule.forRoot({ enrichers: [enrichTenant] }) \u002F\u002F NestJS\n",[547,2150,2151,2169,2173,2201,2205,2233,2240],{"__ignoreMap":681},[685,2152,2153,2155,2157,2159,2161,2163,2165,2167],{"class":687,"line":688},[685,2154,862],{"class":698},[685,2156,865],{"class":713},[685,2158,1636],{"class":709},[685,2160,871],{"class":713},[685,2162,874],{"class":698},[685,2164,877],{"class":713},[685,2166,2044],{"class":753},[685,2168,883],{"class":713},[685,2170,2171],{"class":687,"line":695},[685,2172,889],{"emptyLinePlaceholder":888},[685,2174,2175,2177,2179,2181,2183,2185,2187,2189,2191,2193,2195,2197,2199],{"class":687,"line":730},[685,2176,1062],{"class":723},[685,2178,2057],{"class":709},[685,2180,1068],{"class":713},[685,2182,1636],{"class":705},[685,2184,710],{"class":709},[685,2186,1160],{"class":713},[685,2188,1653],{"class":747},[685,2190,935],{"class":713},[685,2192,877],{"class":713},[685,2194,1962],{"class":753},[685,2196,750],{"class":713},[685,2198,871],{"class":713},[685,2200,839],{"class":709},[685,2202,2203],{"class":687,"line":774},[685,2204,889],{"emptyLinePlaceholder":888},[685,2206,2207,2209,2211,2213,2215,2217,2219,2221,2223,2225,2228,2230],{"class":687,"line":806},[685,2208,1146],{"class":709},[685,2210,736],{"class":713},[685,2212,1151],{"class":705},[685,2214,710],{"class":709},[685,2216,1051],{"class":705},[685,2218,710],{"class":709},[685,2220,1160],{"class":713},[685,2222,1163],{"class":747},[685,2224,935],{"class":713},[685,2226,2227],{"class":709}," [enrichTenant] ",[685,2229,845],{"class":713},[685,2231,2232],{"class":709},"))\n",[685,2234,2235,2238],{"class":687,"line":833},[685,2236,2237],{"class":691},"\u002F\u002F await app.register(evlog, { enrichers: [enrichTenant] })",[685,2239,1184],{"class":691},[685,2241,2242,2245],{"class":687,"line":842},[685,2243,2244],{"class":691},"\u002F\u002F EvlogModule.forRoot({ enrichers: [enrichTenant] })",[685,2246,1192],{"class":691},[675,2248,2250],{"className":677,"code":2249,"filename":290,"language":680,"meta":681,"style":681},"import { initLogger } from 'evlog'\nimport { createTenantEnricher } from '.\u002Fenrichers'\n\ninitLogger({\n  enrichers: [createTenantEnricher({ headerName: 'x-org-id' })],\n})\n",[547,2251,2252,2270,2288,2292,2300,2334],{"__ignoreMap":681},[685,2253,2254,2256,2258,2260,2262,2264,2266,2268],{"class":687,"line":688},[685,2255,862],{"class":698},[685,2257,865],{"class":713},[685,2259,1231],{"class":709},[685,2261,871],{"class":713},[685,2263,874],{"class":698},[685,2265,877],{"class":713},[685,2267,1051],{"class":753},[685,2269,883],{"class":713},[685,2271,2272,2274,2276,2278,2280,2282,2284,2286],{"class":687,"line":695},[685,2273,862],{"class":698},[685,2275,865],{"class":713},[685,2277,1636],{"class":709},[685,2279,871],{"class":713},[685,2281,874],{"class":698},[685,2283,877],{"class":713},[685,2285,2044],{"class":753},[685,2287,883],{"class":713},[685,2289,2290],{"class":687,"line":730},[685,2291,889],{"emptyLinePlaceholder":888},[685,2293,2294,2296,2298],{"class":687,"line":774},[685,2295,1328],{"class":705},[685,2297,710],{"class":709},[685,2299,927],{"class":713},[685,2301,2302,2305,2307,2310,2313,2315,2317,2319,2321,2323,2325,2327,2329,2332],{"class":687,"line":806},[685,2303,2304],{"class":747},"  enrichers",[685,2306,935],{"class":713},[685,2308,2309],{"class":709}," [",[685,2311,2312],{"class":705},"createTenantEnricher",[685,2314,710],{"class":709},[685,2316,1160],{"class":713},[685,2318,1653],{"class":747},[685,2320,935],{"class":713},[685,2322,877],{"class":713},[685,2324,1962],{"class":753},[685,2326,750],{"class":713},[685,2328,871],{"class":713},[685,2330,2331],{"class":709},")]",[685,2333,945],{"class":713},[685,2335,2336,2338],{"class":687,"line":833},[685,2337,845],{"class":713},[685,2339,839],{"class":709},[664,2341,2343],{"id":2342},"combining-with-built-in-enrichers","Combining with built-in enrichers",[535,2345,2346,2347,2350,2351,550,2354,2356],{},"Custom and built-in enrichers compose freely — they're all just ",[547,2348,2349],{},"(ctx: EnrichContext) => void"," functions. Use ",[547,2352,2353],{},"composeEnrichers",[547,2355,553],{}," to combine them into a single callable:",[675,2358,2361],{"className":677,"code":2359,"filename":2360,"language":680,"meta":681,"style":681},"import { composeEnrichers, defineEnricher } from 'evlog\u002Ftoolkit'\nimport { createDefaultEnrichers } from 'evlog\u002Fenrichers'\n\nconst region = defineEnricher({\n  name: 'region',\n  field: 'region',\n  compute: () => process.env.FLY_REGION ?? process.env.AWS_REGION,\n})\n\nexport const enrich = composeEnrichers([\n  createDefaultEnrichers(), \u002F\u002F userAgent + geo + requestSize + traceContext\n  region,\n])\n","enrichers.ts",[547,2362,2363,2386,2406,2410,2425,2441,2456,2495,2501,2505,2521,2534,2541],{"__ignoreMap":681},[685,2364,2365,2367,2369,2372,2374,2376,2378,2380,2382,2384],{"class":687,"line":688},[685,2366,862],{"class":698},[685,2368,865],{"class":713},[685,2370,2371],{"class":709}," composeEnrichers",[685,2373,759],{"class":713},[685,2375,1565],{"class":709},[685,2377,871],{"class":713},[685,2379,874],{"class":698},[685,2381,877],{"class":713},[685,2383,553],{"class":753},[685,2385,883],{"class":713},[685,2387,2388,2390,2392,2395,2397,2399,2401,2404],{"class":687,"line":695},[685,2389,862],{"class":698},[685,2391,865],{"class":713},[685,2393,2394],{"class":709}," createDefaultEnrichers",[685,2396,871],{"class":713},[685,2398,874],{"class":698},[685,2400,877],{"class":713},[685,2402,2403],{"class":753},"evlog\u002Fenrichers",[685,2405,883],{"class":713},[685,2407,2408],{"class":687,"line":730},[685,2409,889],{"emptyLinePlaceholder":888},[685,2411,2412,2414,2417,2419,2421,2423],{"class":687,"line":774},[685,2413,1062],{"class":723},[685,2415,2416],{"class":709}," region ",[685,2418,1068],{"class":713},[685,2420,1565],{"class":705},[685,2422,710],{"class":709},[685,2424,927],{"class":713},[685,2426,2427,2430,2432,2434,2437,2439],{"class":687,"line":806},[685,2428,2429],{"class":747},"  name",[685,2431,935],{"class":713},[685,2433,877],{"class":713},[685,2435,2436],{"class":753},"region",[685,2438,750],{"class":713},[685,2440,945],{"class":713},[685,2442,2443,2446,2448,2450,2452,2454],{"class":687,"line":833},[685,2444,2445],{"class":747},"  field",[685,2447,935],{"class":713},[685,2449,877],{"class":713},[685,2451,2436],{"class":753},[685,2453,750],{"class":713},[685,2455,945],{"class":713},[685,2457,2458,2461,2463,2466,2468,2470,2472,2474,2476,2479,2482,2484,2486,2488,2490,2493],{"class":687,"line":842},[685,2459,2460],{"class":705},"  compute",[685,2462,935],{"class":713},[685,2464,2465],{"class":713}," ()",[685,2467,724],{"class":723},[685,2469,793],{"class":709},[685,2471,736],{"class":713},[685,2473,798],{"class":709},[685,2475,736],{"class":713},[685,2477,2478],{"class":709},"FLY_REGION ",[685,2480,2481],{"class":713},"??",[685,2483,793],{"class":709},[685,2485,736],{"class":713},[685,2487,798],{"class":709},[685,2489,736],{"class":713},[685,2491,2492],{"class":709},"AWS_REGION",[685,2494,945],{"class":713},[685,2496,2497,2499],{"class":687,"line":989},[685,2498,845],{"class":713},[685,2500,839],{"class":709},[685,2502,2503],{"class":687,"line":1014},[685,2504,889],{"emptyLinePlaceholder":888},[685,2506,2507,2509,2511,2514,2516,2518],{"class":687,"line":1020},[685,2508,699],{"class":698},[685,2510,896],{"class":723},[685,2512,2513],{"class":709}," enrich ",[685,2515,1068],{"class":713},[685,2517,2371],{"class":705},[685,2519,2520],{"class":709},"([\n",[685,2522,2523,2526,2529,2531],{"class":687,"line":1440},[685,2524,2525],{"class":705},"  createDefaultEnrichers",[685,2527,2528],{"class":709},"()",[685,2530,759],{"class":713},[685,2532,2533],{"class":691}," \u002F\u002F userAgent + geo + requestSize + traceContext\n",[685,2535,2536,2539],{"class":687,"line":1465},[685,2537,2538],{"class":709},"  region",[685,2540,945],{"class":713},[685,2542,2543],{"class":687,"line":1471},[685,2544,2545],{"class":709},"])\n",[664,2547,2549],{"id":2548},"more-examples","More examples",[535,2551,2552,2553,2555],{},"Each example below is a plain ",[547,2554,549],{}," call — wire it the same way as the basic example, regardless of framework.",[2557,2558,2560],"h3",{"id":2559},"feature-flags","Feature flags",[675,2562,2565],{"className":677,"code":2563,"filename":2564,"language":680,"meta":681,"style":681},"import { defineEnricher } from 'evlog\u002Ftoolkit'\n\nexport const featureFlags = defineEnricher({\n  name: 'feature-flags',\n  field: 'featureFlags',\n  compute: () => ({\n    newCheckout: isEnabled('new-checkout'),\n    betaApi: isEnabled('beta-api'),\n  }),\n})\n","enricher-feature-flags.ts",[547,2566,2567,2585,2589,2606,2620,2635,2649,2672,2694,2702],{"__ignoreMap":681},[685,2568,2569,2571,2573,2575,2577,2579,2581,2583],{"class":687,"line":688},[685,2570,862],{"class":698},[685,2572,865],{"class":713},[685,2574,1565],{"class":709},[685,2576,871],{"class":713},[685,2578,874],{"class":698},[685,2580,877],{"class":713},[685,2582,553],{"class":753},[685,2584,883],{"class":713},[685,2586,2587],{"class":687,"line":695},[685,2588,889],{"emptyLinePlaceholder":888},[685,2590,2591,2593,2595,2598,2600,2602,2604],{"class":687,"line":730},[685,2592,699],{"class":698},[685,2594,896],{"class":723},[685,2596,2597],{"class":709}," featureFlags ",[685,2599,1068],{"class":713},[685,2601,1565],{"class":705},[685,2603,710],{"class":709},[685,2605,927],{"class":713},[685,2607,2608,2610,2612,2614,2616,2618],{"class":687,"line":774},[685,2609,2429],{"class":747},[685,2611,935],{"class":713},[685,2613,877],{"class":713},[685,2615,2559],{"class":753},[685,2617,750],{"class":713},[685,2619,945],{"class":713},[685,2621,2622,2624,2626,2628,2631,2633],{"class":687,"line":806},[685,2623,2445],{"class":747},[685,2625,935],{"class":713},[685,2627,877],{"class":713},[685,2629,2630],{"class":753},"featureFlags",[685,2632,750],{"class":713},[685,2634,945],{"class":713},[685,2636,2637,2639,2641,2643,2645,2647],{"class":687,"line":833},[685,2638,2460],{"class":705},[685,2640,935],{"class":713},[685,2642,2465],{"class":713},[685,2644,724],{"class":723},[685,2646,762],{"class":709},[685,2648,927],{"class":713},[685,2650,2651,2654,2656,2659,2661,2663,2666,2668,2670],{"class":687,"line":842},[685,2652,2653],{"class":747},"    newCheckout",[685,2655,935],{"class":713},[685,2657,2658],{"class":705}," isEnabled",[685,2660,710],{"class":709},[685,2662,750],{"class":713},[685,2664,2665],{"class":753},"new-checkout",[685,2667,750],{"class":713},[685,2669,720],{"class":709},[685,2671,945],{"class":713},[685,2673,2674,2677,2679,2681,2683,2685,2688,2690,2692],{"class":687,"line":989},[685,2675,2676],{"class":747},"    betaApi",[685,2678,935],{"class":713},[685,2680,2658],{"class":705},[685,2682,710],{"class":709},[685,2684,750],{"class":713},[685,2686,2687],{"class":753},"beta-api",[685,2689,750],{"class":713},[685,2691,720],{"class":709},[685,2693,945],{"class":713},[685,2695,2696,2698,2700],{"class":687,"line":1014},[685,2697,836],{"class":713},[685,2699,720],{"class":709},[685,2701,945],{"class":713},[685,2703,2704,2706],{"class":687,"line":1020},[685,2705,845],{"class":713},[685,2707,839],{"class":709},[2557,2709,2711],{"id":2710},"response-time-classification","Response time classification",[675,2713,2716],{"className":677,"code":2714,"filename":2715,"language":680,"meta":681,"style":681},"import { defineEnricher } from 'evlog\u002Ftoolkit'\n\nexport const performanceTier = defineEnricher\u003Cstring>({\n  name: 'performance-tier',\n  field: 'performanceTier',\n  compute: ({ event }) => {\n    const duration = event.duration as number | undefined\n    if (duration === undefined) return undefined\n    if (duration \u003C 100) return 'fast'\n    if (duration \u003C 500) return 'normal'\n    if (duration \u003C 2000) return 'slow'\n    return 'critical'\n  },\n})\n","enricher-perf-tier.ts",[547,2717,2718,2736,2740,2763,2778,2793,2810,2838,2859,2885,2909,2933,2945,2949],{"__ignoreMap":681},[685,2719,2720,2722,2724,2726,2728,2730,2732,2734],{"class":687,"line":688},[685,2721,862],{"class":698},[685,2723,865],{"class":713},[685,2725,1565],{"class":709},[685,2727,871],{"class":713},[685,2729,874],{"class":698},[685,2731,877],{"class":713},[685,2733,553],{"class":753},[685,2735,883],{"class":713},[685,2737,2738],{"class":687,"line":695},[685,2739,889],{"emptyLinePlaceholder":888},[685,2741,2742,2744,2746,2749,2751,2753,2755,2757,2759,2761],{"class":687,"line":730},[685,2743,699],{"class":698},[685,2745,896],{"class":723},[685,2747,2748],{"class":709}," performanceTier ",[685,2750,1068],{"class":713},[685,2752,1565],{"class":705},[685,2754,1451],{"class":713},[685,2756,1454],{"class":1077},[685,2758,1712],{"class":713},[685,2760,710],{"class":709},[685,2762,927],{"class":713},[685,2764,2765,2767,2769,2771,2774,2776],{"class":687,"line":774},[685,2766,2429],{"class":747},[685,2768,935],{"class":713},[685,2770,877],{"class":713},[685,2772,2773],{"class":753},"performance-tier",[685,2775,750],{"class":713},[685,2777,945],{"class":713},[685,2779,2780,2782,2784,2786,2789,2791],{"class":687,"line":806},[685,2781,2445],{"class":747},[685,2783,935],{"class":713},[685,2785,877],{"class":713},[685,2787,2788],{"class":753},"performanceTier",[685,2790,750],{"class":713},[685,2792,945],{"class":713},[685,2794,2795,2797,2799,2801,2804,2806,2808],{"class":687,"line":833},[685,2796,2460],{"class":705},[685,2798,935],{"class":713},[685,2800,1757],{"class":713},[685,2802,2803],{"class":716}," event",[685,2805,1763],{"class":713},[685,2807,724],{"class":723},[685,2809,727],{"class":713},[685,2811,2812,2815,2818,2820,2822,2824,2827,2830,2833,2836],{"class":687,"line":842},[685,2813,2814],{"class":723},"    const",[685,2816,2817],{"class":709}," duration",[685,2819,790],{"class":713},[685,2821,2803],{"class":709},[685,2823,736],{"class":713},[685,2825,2826],{"class":709},"duration",[685,2828,2829],{"class":698}," as",[685,2831,2832],{"class":1077}," number",[685,2834,2835],{"class":713}," |",[685,2837,1812],{"class":1077},[685,2839,2840,2843,2845,2847,2850,2853,2855,2857],{"class":687,"line":989},[685,2841,2842],{"class":698},"    if",[685,2844,762],{"class":747},[685,2846,2826],{"class":709},[685,2848,2849],{"class":713}," ===",[685,2851,2852],{"class":713}," undefined",[685,2854,1806],{"class":747},[685,2856,1809],{"class":698},[685,2858,1812],{"class":713},[685,2860,2861,2863,2865,2867,2870,2874,2876,2878,2880,2883],{"class":687,"line":1014},[685,2862,2842],{"class":698},[685,2864,762],{"class":747},[685,2866,2826],{"class":709},[685,2868,2869],{"class":713}," \u003C",[685,2871,2873],{"class":2872},"sbssI"," 100",[685,2875,1806],{"class":747},[685,2877,1809],{"class":698},[685,2879,877],{"class":713},[685,2881,2882],{"class":753},"fast",[685,2884,883],{"class":713},[685,2886,2887,2889,2891,2893,2895,2898,2900,2902,2904,2907],{"class":687,"line":1020},[685,2888,2842],{"class":698},[685,2890,762],{"class":747},[685,2892,2826],{"class":709},[685,2894,2869],{"class":713},[685,2896,2897],{"class":2872}," 500",[685,2899,1806],{"class":747},[685,2901,1809],{"class":698},[685,2903,877],{"class":713},[685,2905,2906],{"class":753},"normal",[685,2908,883],{"class":713},[685,2910,2911,2913,2915,2917,2919,2922,2924,2926,2928,2931],{"class":687,"line":1440},[685,2912,2842],{"class":698},[685,2914,762],{"class":747},[685,2916,2826],{"class":709},[685,2918,2869],{"class":713},[685,2920,2921],{"class":2872}," 2000",[685,2923,1806],{"class":747},[685,2925,1809],{"class":698},[685,2927,877],{"class":713},[685,2929,2930],{"class":753},"slow",[685,2932,883],{"class":713},[685,2934,2935,2938,2940,2943],{"class":687,"line":1465},[685,2936,2937],{"class":698},"    return",[685,2939,877],{"class":713},[685,2941,2942],{"class":753},"critical",[685,2944,883],{"class":713},[685,2946,2947],{"class":687,"line":1471},[685,2948,1017],{"class":713},[685,2950,2951,2953],{"class":687,"line":1481},[685,2952,845],{"class":713},[685,2954,839],{"class":709},[664,2956,2958],{"id":2957},"when-to-reach-for-a-plugin-instead","When to reach for a plugin instead",[535,2960,2961,2962,2965],{},"If your feature mixes enrichment with other hooks (e.g. enrich + tail-sample + side-effect on drain), use a ",[653,2963,2964],{"href":470},"plugin"," instead — one cohesive object covering several lifecycle points.",[664,2967,2969],{"id":2968},"next-steps","Next steps",[568,2971,2972,2978,2983],{},[571,2973,2974,2977],{},[653,2975,2976],{"href":432},"Built-in Enrichers"," — User Agent, Geo, Request Size, Trace Context",[571,2979,2980,2982],{},[653,2981,469],{"href":470}," — multi-hook extensions (drain + enrich + keep in one object)",[571,2984,2985,2987],{},[653,2986,138],{"href":143}," — send enriched events to external services",[2989,2990,2991],"style",{},"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 .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 .s2Zo4, html code.shiki .s2Zo4{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .sTEyZ, html code.shiki .sTEyZ{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .sMK4o, html code.shiki .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}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 .spNyl, html code.shiki .spNyl{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}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}",{"title":681,"searchDepth":695,"depth":695,"links":2993},[2994,2995,2996,2998,2999,3003,3004],{"id":666,"depth":695,"text":667},{"id":1345,"depth":695,"text":1346},{"id":1541,"depth":695,"text":2997},"Recommended pattern — defineEnricher",{"id":2342,"depth":695,"text":2343},{"id":2548,"depth":695,"text":2549,"children":3000},[3001,3002],{"id":2559,"depth":730,"text":2560},{"id":2710,"depth":730,"text":2711},{"id":2957,"depth":695,"text":2958},{"id":2968,"depth":695,"text":2969},"Write custom enrichers to add derived context to your wide events. Add deployment metadata, tenant IDs, feature flags, geo, or any computed data — the toolkit handles error isolation, undefined skipping, and the merge step.","md",[3008,3011],{"label":2976,"icon":458,"to":432,"color":3009,"variant":3010},"neutral","subtle",{"label":469,"icon":448,"to":470,"color":3009,"variant":3010},{},{"title":473,"icon":434},{"title":527,"description":3005},"4IJLuDtqFtseL5XY7AOLgljPEFDnUScmvIdyNGQeGnI",[3017,3019],{"title":469,"path":470,"stem":471,"description":3018,"icon":448,"children":-1},"definePlugin is the canonical extension point for evlog — opt into any subset of setup, onRequestStart, enrich, keep, drain, onRequestFinish, onClientLog, extendLogger from a single cohesive object.",{"title":477,"path":478,"stem":479,"description":3020,"icon":64,"children":-1},"Decide post-hoc whether to keep an event with full knowledge of its outcome (status, duration, errors). The opposite of head sampling — keep all errors and slow requests while throwing away healthy noise.",1785673271165]