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No ",[539,646,647],{},"pino-http"," vs ",[539,650,651],{},"pino"," split, no separate ",[539,654,655],{},"consola"," reporters per environment.",[629,658,659,673],{},[534,660,661,662,665,666,665,669,672],{},"Structured errors with ",[539,663,664],{},"why"," \u002F ",[539,667,668],{},"fix",[539,670,671],{},"link"," built in"," — your error toast finally tells users what went wrong and what to do, your on-call stops reverse-engineering stack traces.",[629,675,676,679,680,683,684,687],{},[534,677,678],{},"Wide events as a free upgrade path"," — when you need to correlate context across an operation, the same logger gives you ",[539,681,682],{},"log.set"," + ",[539,685,686],{},"log.emit"," instead of stitching log lines together later.",[531,689,690,691,694],{},"See the full ",[547,692,693],{"href":518},"feature comparison"," (parity matrix, honest gaps, and migration snippets) for a side-by-side with pino, winston, and consola.",[571,696,698],{"id":697},"three-ways-to-log","Three Ways to Log",[531,700,701],{},"evlog provides three APIs for different contexts. You can use all three in the same project.",[703,704,41],"h3",{"id":705},"simple-logging",[531,707,708,709,711],{},"Fire-and-forget structured logs. Replace ",[539,710,541],{},", consola, or pino:",[713,714,720],"pre",{"className":715,"code":716,"filename":717,"language":718,"meta":719,"style":719},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { log } from 'evlog'\n\nlog.info('auth', 'User logged in')\nlog.error({ action: 'payment', error: 'card_declined', userId: 42 })\n","src\u002Findex.ts","typescript","",[539,721,722,754,761,797],{"__ignoreMap":719},[723,724,727,731,735,739,742,745,748,751],"span",{"class":725,"line":726},"line",1,[723,728,730],{"class":729},"s7zQu","import",[723,732,734],{"class":733},"sMK4o"," {",[723,736,738],{"class":737},"sTEyZ"," log",[723,740,741],{"class":733}," }",[723,743,744],{"class":729}," from",[723,746,747],{"class":733}," '",[723,749,536],{"class":750},"sfazB",[723,752,753],{"class":733},"'\n",[723,755,757],{"class":725,"line":756},2,[723,758,760],{"emptyLinePlaceholder":759},true,"\n",[723,762,764,767,770,773,776,779,782,784,787,789,792,794],{"class":725,"line":763},3,[723,765,766],{"class":737},"log",[723,768,769],{"class":733},".",[723,771,608],{"class":772},"s2Zo4",[723,774,775],{"class":737},"(",[723,777,778],{"class":733},"'",[723,780,781],{"class":750},"auth",[723,783,778],{"class":733},[723,785,786],{"class":733},",",[723,788,747],{"class":733},[723,790,791],{"class":750},"User logged in",[723,793,778],{"class":733},[723,795,796],{"class":737},")\n",[723,798,800,802,804,807,809,812,816,819,821,824,826,828,831,833,835,838,840,842,845,847,851,853],{"class":725,"line":799},4,[723,801,766],{"class":737},[723,803,769],{"class":733},[723,805,806],{"class":772},"error",[723,808,775],{"class":737},[723,810,811],{"class":733},"{",[723,813,815],{"class":814},"swJcz"," action",[723,817,818],{"class":733},":",[723,820,747],{"class":733},[723,822,823],{"class":750},"payment",[723,825,778],{"class":733},[723,827,786],{"class":733},[723,829,830],{"class":814}," error",[723,832,818],{"class":733},[723,834,747],{"class":733},[723,836,837],{"class":750},"card_declined",[723,839,778],{"class":733},[723,841,786],{"class":733},[723,843,844],{"class":814}," userId",[723,846,818],{"class":733},[723,848,850],{"class":849},"sbssI"," 42",[723,852,741],{"class":733},[723,854,796],{"class":737},[703,856,46],{"id":857},"wide-events",[531,859,860],{},"Accumulate context progressively over any operation, then emit a single comprehensive event:",[862,863,864,997,1127],"code-group",{},[713,865,868],{"className":715,"code":866,"filename":867,"language":718,"meta":719,"style":719},"import { createLogger } from 'evlog'\n\nconst log = createLogger({ jobId: 'sync-001', queue: 'emails' })\nlog.set({ batch: { size: 50, processed: 50 } })\nlog.emit()\n","scripts\u002Fsync-job.ts",[539,869,870,889,893,941,984],{"__ignoreMap":719},[723,871,872,874,876,879,881,883,885,887],{"class":725,"line":726},[723,873,730],{"class":729},[723,875,734],{"class":733},[723,877,878],{"class":737}," createLogger",[723,880,741],{"class":733},[723,882,744],{"class":729},[723,884,747],{"class":733},[723,886,536],{"class":750},[723,888,753],{"class":733},[723,890,891],{"class":725,"line":756},[723,892,760],{"emptyLinePlaceholder":759},[723,894,895,899,902,905,907,909,911,914,916,918,921,923,925,928,930,932,935,937,939],{"class":725,"line":763},[723,896,898],{"class":897},"spNyl","const",[723,900,901],{"class":737}," log ",[723,903,904],{"class":733},"=",[723,906,878],{"class":772},[723,908,775],{"class":737},[723,910,811],{"class":733},[723,912,913],{"class":814}," jobId",[723,915,818],{"class":733},[723,917,747],{"class":733},[723,919,920],{"class":750},"sync-001",[723,922,778],{"class":733},[723,924,786],{"class":733},[723,926,927],{"class":814}," queue",[723,929,818],{"class":733},[723,931,747],{"class":733},[723,933,934],{"class":750},"emails",[723,936,778],{"class":733},[723,938,741],{"class":733},[723,940,796],{"class":737},[723,942,943,945,947,950,952,954,957,959,961,964,966,969,971,974,976,978,980,982],{"class":725,"line":799},[723,944,766],{"class":737},[723,946,769],{"class":733},[723,948,949],{"class":772},"set",[723,951,775],{"class":737},[723,953,811],{"class":733},[723,955,956],{"class":814}," batch",[723,958,818],{"class":733},[723,960,734],{"class":733},[723,962,963],{"class":814}," size",[723,965,818],{"class":733},[723,967,968],{"class":849}," 50",[723,970,786],{"class":733},[723,972,973],{"class":814}," processed",[723,975,818],{"class":733},[723,977,968],{"class":849},[723,979,741],{"class":733},[723,981,741],{"class":733},[723,983,796],{"class":737},[723,985,987,989,991,994],{"class":725,"line":986},5,[723,988,766],{"class":737},[723,990,769],{"class":733},[723,992,993],{"class":772},"emit",[723,995,996],{"class":737},"()\n",[713,998,1001],{"className":715,"code":999,"filename":1000,"language":718,"meta":719,"style":719},"import { createRequestLogger } from 'evlog'\n\nconst log = createRequestLogger({ method: 'POST', path: '\u002Fapi\u002Fcheckout' })\nlog.set({ user: { id: 1, plan: 'pro' } })\nlog.emit()\n","src\u002Fworker.ts",[539,1002,1003,1022,1026,1070,1117],{"__ignoreMap":719},[723,1004,1005,1007,1009,1012,1014,1016,1018,1020],{"class":725,"line":726},[723,1006,730],{"class":729},[723,1008,734],{"class":733},[723,1010,1011],{"class":737}," createRequestLogger",[723,1013,741],{"class":733},[723,1015,744],{"class":729},[723,1017,747],{"class":733},[723,1019,536],{"class":750},[723,1021,753],{"class":733},[723,1023,1024],{"class":725,"line":756},[723,1025,760],{"emptyLinePlaceholder":759},[723,1027,1028,1030,1032,1034,1036,1038,1040,1043,1045,1047,1050,1052,1054,1057,1059,1061,1064,1066,1068],{"class":725,"line":763},[723,1029,898],{"class":897},[723,1031,901],{"class":737},[723,1033,904],{"class":733},[723,1035,1011],{"class":772},[723,1037,775],{"class":737},[723,1039,811],{"class":733},[723,1041,1042],{"class":814}," method",[723,1044,818],{"class":733},[723,1046,747],{"class":733},[723,1048,1049],{"class":750},"POST",[723,1051,778],{"class":733},[723,1053,786],{"class":733},[723,1055,1056],{"class":814}," path",[723,1058,818],{"class":733},[723,1060,747],{"class":733},[723,1062,1063],{"class":750},"\u002Fapi\u002Fcheckout",[723,1065,778],{"class":733},[723,1067,741],{"class":733},[723,1069,796],{"class":737},[723,1071,1072,1074,1076,1078,1080,1082,1085,1087,1089,1092,1094,1097,1099,1102,1104,1106,1109,1111,1113,1115],{"class":725,"line":799},[723,1073,766],{"class":737},[723,1075,769],{"class":733},[723,1077,949],{"class":772},[723,1079,775],{"class":737},[723,1081,811],{"class":733},[723,1083,1084],{"class":814}," user",[723,1086,818],{"class":733},[723,1088,734],{"class":733},[723,1090,1091],{"class":814}," id",[723,1093,818],{"class":733},[723,1095,1096],{"class":849}," 1",[723,1098,786],{"class":733},[723,1100,1101],{"class":814}," plan",[723,1103,818],{"class":733},[723,1105,747],{"class":733},[723,1107,1108],{"class":750},"pro",[723,1110,778],{"class":733},[723,1112,741],{"class":733},[723,1114,741],{"class":733},[723,1116,796],{"class":737},[723,1118,1119,1121,1123,1125],{"class":725,"line":986},[723,1120,766],{"class":737},[723,1122,769],{"class":733},[723,1124,993],{"class":772},[723,1126,996],{"class":737},[713,1128,1131],{"className":715,"code":1129,"filename":1130,"language":718,"meta":719,"style":719},"import { useLogger } from 'evlog'\n\nexport default defineEventHandler(async (event) => {\n  const log = useLogger(event)\n  log.set({ user: { id: 1, plan: 'pro' } })\n  return { success: true }\n  \u002F\u002F auto-emitted on response end\n})\n","server\u002Fapi\u002Fcheckout.post.ts",[539,1132,1133,1152,1156,1187,1205,1248,1268,1275],{"__ignoreMap":719},[723,1134,1135,1137,1139,1142,1144,1146,1148,1150],{"class":725,"line":726},[723,1136,730],{"class":729},[723,1138,734],{"class":733},[723,1140,1141],{"class":737}," useLogger",[723,1143,741],{"class":733},[723,1145,744],{"class":729},[723,1147,747],{"class":733},[723,1149,536],{"class":750},[723,1151,753],{"class":733},[723,1153,1154],{"class":725,"line":756},[723,1155,760],{"emptyLinePlaceholder":759},[723,1157,1158,1161,1164,1167,1169,1172,1174,1178,1181,1184],{"class":725,"line":763},[723,1159,1160],{"class":729},"export",[723,1162,1163],{"class":729}," default",[723,1165,1166],{"class":772}," defineEventHandler",[723,1168,775],{"class":737},[723,1170,1171],{"class":897},"async",[723,1173,565],{"class":733},[723,1175,1177],{"class":1176},"sHdIc","event",[723,1179,1180],{"class":733},")",[723,1182,1183],{"class":897}," =>",[723,1185,1186],{"class":733}," {\n",[723,1188,1189,1192,1194,1197,1199,1201,1203],{"class":725,"line":799},[723,1190,1191],{"class":897},"  const",[723,1193,738],{"class":737},[723,1195,1196],{"class":733}," =",[723,1198,1141],{"class":772},[723,1200,775],{"class":814},[723,1202,1177],{"class":737},[723,1204,796],{"class":814},[723,1206,1207,1210,1212,1214,1216,1218,1220,1222,1224,1226,1228,1230,1232,1234,1236,1238,1240,1242,1244,1246],{"class":725,"line":986},[723,1208,1209],{"class":737},"  log",[723,1211,769],{"class":733},[723,1213,949],{"class":772},[723,1215,775],{"class":814},[723,1217,811],{"class":733},[723,1219,1084],{"class":814},[723,1221,818],{"class":733},[723,1223,734],{"class":733},[723,1225,1091],{"class":814},[723,1227,818],{"class":733},[723,1229,1096],{"class":849},[723,1231,786],{"class":733},[723,1233,1101],{"class":814},[723,1235,818],{"class":733},[723,1237,747],{"class":733},[723,1239,1108],{"class":750},[723,1241,778],{"class":733},[723,1243,741],{"class":733},[723,1245,741],{"class":733},[723,1247,796],{"class":814},[723,1249,1251,1254,1256,1259,1261,1265],{"class":725,"line":1250},6,[723,1252,1253],{"class":729},"  return",[723,1255,734],{"class":733},[723,1257,1258],{"class":814}," success",[723,1260,818],{"class":733},[723,1262,1264],{"class":1263},"sfNiH"," true",[723,1266,1267],{"class":733}," }\n",[723,1269,1271],{"class":725,"line":1270},7,[723,1272,1274],{"class":1273},"sHwdD","  \u002F\u002F auto-emitted on response end\n",[723,1276,1278,1281],{"class":725,"line":1277},8,[723,1279,1280],{"class":733},"}",[723,1282,796],{"class":737},[531,1284,1285],{},"One log, all context. Everything you need to understand what happened.",[703,1287,51],{"id":1288},"structured-errors",[531,1290,1291,1292,1294,1295,1297,1298,1300],{},"Errors with actionable context: ",[539,1293,664],{}," it happened, how to ",[539,1296,668],{}," it, and a ",[539,1299,671],{}," to docs:",[862,1302,1303,1427],{},[713,1304,1306],{"className":715,"code":1305,"filename":1130,"language":718,"meta":719,"style":719},"import { createError } from 'evlog'\n\nthrow createError({\n  message: 'Payment failed',\n  status: 402,\n  why: 'Card declined by issuer (insufficient funds)',\n  fix: 'Try a different payment method or contact your bank',\n  link: 'https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined',\n})\n",[539,1307,1308,1327,1331,1343,1360,1372,1388,1404,1420],{"__ignoreMap":719},[723,1309,1310,1312,1314,1317,1319,1321,1323,1325],{"class":725,"line":726},[723,1311,730],{"class":729},[723,1313,734],{"class":733},[723,1315,1316],{"class":737}," createError",[723,1318,741],{"class":733},[723,1320,744],{"class":729},[723,1322,747],{"class":733},[723,1324,536],{"class":750},[723,1326,753],{"class":733},[723,1328,1329],{"class":725,"line":756},[723,1330,760],{"emptyLinePlaceholder":759},[723,1332,1333,1336,1338,1340],{"class":725,"line":763},[723,1334,1335],{"class":729},"throw",[723,1337,1316],{"class":772},[723,1339,775],{"class":737},[723,1341,1342],{"class":733},"{\n",[723,1344,1345,1348,1350,1352,1355,1357],{"class":725,"line":799},[723,1346,1347],{"class":814},"  message",[723,1349,818],{"class":733},[723,1351,747],{"class":733},[723,1353,1354],{"class":750},"Payment failed",[723,1356,778],{"class":733},[723,1358,1359],{"class":733},",\n",[723,1361,1362,1365,1367,1370],{"class":725,"line":986},[723,1363,1364],{"class":814},"  status",[723,1366,818],{"class":733},[723,1368,1369],{"class":849}," 402",[723,1371,1359],{"class":733},[723,1373,1374,1377,1379,1381,1384,1386],{"class":725,"line":1250},[723,1375,1376],{"class":814},"  why",[723,1378,818],{"class":733},[723,1380,747],{"class":733},[723,1382,1383],{"class":750},"Card declined by issuer (insufficient funds)",[723,1385,778],{"class":733},[723,1387,1359],{"class":733},[723,1389,1390,1393,1395,1397,1400,1402],{"class":725,"line":1270},[723,1391,1392],{"class":814},"  fix",[723,1394,818],{"class":733},[723,1396,747],{"class":733},[723,1398,1399],{"class":750},"Try a different payment method or contact your bank",[723,1401,778],{"class":733},[723,1403,1359],{"class":733},[723,1405,1406,1409,1411,1413,1416,1418],{"class":725,"line":1277},[723,1407,1408],{"class":814},"  link",[723,1410,818],{"class":733},[723,1412,747],{"class":733},[723,1414,1415],{"class":750},"https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined",[723,1417,778],{"class":733},[723,1419,1359],{"class":733},[723,1421,1423,1425],{"class":725,"line":1422},9,[723,1424,1280],{"class":733},[723,1426,796],{"class":737},[713,1428,1433],{"className":1429,"code":1430,"filename":1431,"language":1432,"meta":719,"style":719},"language-json shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","{\n  \"statusCode\": 402,\n  \"message\": \"Payment failed\",\n  \"data\": {\n    \"why\": \"Card declined by issuer (insufficient funds)\",\n    \"fix\": \"Try a different payment method or contact your bank\",\n    \"link\": \"https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined\"\n  }\n}\n","Response","json",[539,1434,1435,1439,1456,1476,1489,1509,1527,1544,1549],{"__ignoreMap":719},[723,1436,1437],{"class":725,"line":726},[723,1438,1342],{"class":733},[723,1440,1441,1444,1447,1450,1452,1454],{"class":725,"line":756},[723,1442,1443],{"class":733},"  \"",[723,1445,1446],{"class":897},"statusCode",[723,1448,1449],{"class":733},"\"",[723,1451,818],{"class":733},[723,1453,1369],{"class":849},[723,1455,1359],{"class":733},[723,1457,1458,1460,1463,1465,1467,1470,1472,1474],{"class":725,"line":763},[723,1459,1443],{"class":733},[723,1461,1462],{"class":897},"message",[723,1464,1449],{"class":733},[723,1466,818],{"class":733},[723,1468,1469],{"class":733}," 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