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No ",[543,650,651],{},"pino-http"," vs ",[543,654,655],{},"pino"," split, no separate ",[543,658,659],{},"consola"," reporters per environment.",[633,662,663,677],{},[538,664,665,666,669,670,669,673,676],{},"Structured errors with ",[543,667,668],{},"why"," \u002F ",[543,671,672],{},"fix",[543,674,675],{},"link"," built in"," — your error toast finally tells users what went wrong and what to do, your on-call stops reverse-engineering stack traces.",[633,679,680,683,684,687,688,691],{},[538,681,682],{},"Wide events as a free upgrade path"," — when you need to correlate context across an operation, the same logger gives you ",[543,685,686],{},"log.set"," + ",[543,689,690],{},"log.emit"," instead of stitching log lines together later.",[535,693,694,695,698],{},"See the full ",[551,696,697],{"href":522},"feature comparison"," (parity matrix, honest gaps, and migration snippets) for a side-by-side with pino, winston, and consola.",[575,700,702],{"id":701},"three-ways-to-log","Three Ways to Log",[535,704,705],{},"evlog provides three APIs for different contexts. You can use all three in the same project.",[707,708,41],"h3",{"id":709},"simple-logging",[535,711,712,713,715],{},"Fire-and-forget structured logs. Replace ",[543,714,545],{},", consola, or pino:",[717,718,724],"pre",{"className":719,"code":720,"filename":721,"language":722,"meta":723,"style":723},"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","",[543,725,726,758,765,801],{"__ignoreMap":723},[727,728,731,735,739,743,746,749,752,755],"span",{"class":729,"line":730},"line",1,[727,732,734],{"class":733},"s7zQu","import",[727,736,738],{"class":737},"sMK4o"," {",[727,740,742],{"class":741},"sTEyZ"," log",[727,744,745],{"class":737}," }",[727,747,748],{"class":733}," from",[727,750,751],{"class":737}," '",[727,753,540],{"class":754},"sfazB",[727,756,757],{"class":737},"'\n",[727,759,761],{"class":729,"line":760},2,[727,762,764],{"emptyLinePlaceholder":763},true,"\n",[727,766,768,771,774,777,780,783,786,788,791,793,796,798],{"class":729,"line":767},3,[727,769,770],{"class":741},"log",[727,772,773],{"class":737},".",[727,775,612],{"class":776},"s2Zo4",[727,778,779],{"class":741},"(",[727,781,782],{"class":737},"'",[727,784,785],{"class":754},"auth",[727,787,782],{"class":737},[727,789,790],{"class":737},",",[727,792,751],{"class":737},[727,794,795],{"class":754},"User logged in",[727,797,782],{"class":737},[727,799,800],{"class":741},")\n",[727,802,804,806,808,811,813,816,820,823,825,828,830,832,835,837,839,842,844,846,849,851,855,857],{"class":729,"line":803},4,[727,805,770],{"class":741},[727,807,773],{"class":737},[727,809,810],{"class":776},"error",[727,812,779],{"class":741},[727,814,815],{"class":737},"{",[727,817,819],{"class":818},"swJcz"," action",[727,821,822],{"class":737},":",[727,824,751],{"class":737},[727,826,827],{"class":754},"payment",[727,829,782],{"class":737},[727,831,790],{"class":737},[727,833,834],{"class":818}," error",[727,836,822],{"class":737},[727,838,751],{"class":737},[727,840,841],{"class":754},"card_declined",[727,843,782],{"class":737},[727,845,790],{"class":737},[727,847,848],{"class":818}," userId",[727,850,822],{"class":737},[727,852,854],{"class":853},"sbssI"," 42",[727,856,745],{"class":737},[727,858,800],{"class":741},[707,860,46],{"id":861},"wide-events",[535,863,864],{},"Accumulate context progressively over any operation, then emit a single comprehensive event:",[866,867,868,1001,1131],"code-group",{},[717,869,872],{"className":719,"code":870,"filename":871,"language":722,"meta":723,"style":723},"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",[543,873,874,893,897,945,988],{"__ignoreMap":723},[727,875,876,878,880,883,885,887,889,891],{"class":729,"line":730},[727,877,734],{"class":733},[727,879,738],{"class":737},[727,881,882],{"class":741}," createLogger",[727,884,745],{"class":737},[727,886,748],{"class":733},[727,888,751],{"class":737},[727,890,540],{"class":754},[727,892,757],{"class":737},[727,894,895],{"class":729,"line":760},[727,896,764],{"emptyLinePlaceholder":763},[727,898,899,903,906,909,911,913,915,918,920,922,925,927,929,932,934,936,939,941,943],{"class":729,"line":767},[727,900,902],{"class":901},"spNyl","const",[727,904,905],{"class":741}," log ",[727,907,908],{"class":737},"=",[727,910,882],{"class":776},[727,912,779],{"class":741},[727,914,815],{"class":737},[727,916,917],{"class":818}," jobId",[727,919,822],{"class":737},[727,921,751],{"class":737},[727,923,924],{"class":754},"sync-001",[727,926,782],{"class":737},[727,928,790],{"class":737},[727,930,931],{"class":818}," queue",[727,933,822],{"class":737},[727,935,751],{"class":737},[727,937,938],{"class":754},"emails",[727,940,782],{"class":737},[727,942,745],{"class":737},[727,944,800],{"class":741},[727,946,947,949,951,954,956,958,961,963,965,968,970,973,975,978,980,982,984,986],{"class":729,"line":803},[727,948,770],{"class":741},[727,950,773],{"class":737},[727,952,953],{"class":776},"set",[727,955,779],{"class":741},[727,957,815],{"class":737},[727,959,960],{"class":818}," batch",[727,962,822],{"class":737},[727,964,738],{"class":737},[727,966,967],{"class":818}," size",[727,969,822],{"class":737},[727,971,972],{"class":853}," 50",[727,974,790],{"class":737},[727,976,977],{"class":818}," processed",[727,979,822],{"class":737},[727,981,972],{"class":853},[727,983,745],{"class":737},[727,985,745],{"class":737},[727,987,800],{"class":741},[727,989,991,993,995,998],{"class":729,"line":990},5,[727,992,770],{"class":741},[727,994,773],{"class":737},[727,996,997],{"class":776},"emit",[727,999,1000],{"class":741},"()\n",[717,1002,1005],{"className":719,"code":1003,"filename":1004,"language":722,"meta":723,"style":723},"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",[543,1006,1007,1026,1030,1074,1121],{"__ignoreMap":723},[727,1008,1009,1011,1013,1016,1018,1020,1022,1024],{"class":729,"line":730},[727,1010,734],{"class":733},[727,1012,738],{"class":737},[727,1014,1015],{"class":741}," createRequestLogger",[727,1017,745],{"class":737},[727,1019,748],{"class":733},[727,1021,751],{"class":737},[727,1023,540],{"class":754},[727,1025,757],{"class":737},[727,1027,1028],{"class":729,"line":760},[727,1029,764],{"emptyLinePlaceholder":763},[727,1031,1032,1034,1036,1038,1040,1042,1044,1047,1049,1051,1054,1056,1058,1061,1063,1065,1068,1070,1072],{"class":729,"line":767},[727,1033,902],{"class":901},[727,1035,905],{"class":741},[727,1037,908],{"class":737},[727,1039,1015],{"class":776},[727,1041,779],{"class":741},[727,1043,815],{"class":737},[727,1045,1046],{"class":818}," method",[727,1048,822],{"class":737},[727,1050,751],{"class":737},[727,1052,1053],{"class":754},"POST",[727,1055,782],{"class":737},[727,1057,790],{"class":737},[727,1059,1060],{"class":818}," path",[727,1062,822],{"class":737},[727,1064,751],{"class":737},[727,1066,1067],{"class":754},"\u002Fapi\u002Fcheckout",[727,1069,782],{"class":737},[727,1071,745],{"class":737},[727,1073,800],{"class":741},[727,1075,1076,1078,1080,1082,1084,1086,1089,1091,1093,1096,1098,1101,1103,1106,1108,1110,1113,1115,1117,1119],{"class":729,"line":803},[727,1077,770],{"class":741},[727,1079,773],{"class":737},[727,1081,953],{"class":776},[727,1083,779],{"class":741},[727,1085,815],{"class":737},[727,1087,1088],{"class":818}," user",[727,1090,822],{"class":737},[727,1092,738],{"class":737},[727,1094,1095],{"class":818}," id",[727,1097,822],{"class":737},[727,1099,1100],{"class":853}," 1",[727,1102,790],{"class":737},[727,1104,1105],{"class":818}," plan",[727,1107,822],{"class":737},[727,1109,751],{"class":737},[727,1111,1112],{"class":754},"pro",[727,1114,782],{"class":737},[727,1116,745],{"class":737},[727,1118,745],{"class":737},[727,1120,800],{"class":741},[727,1122,1123,1125,1127,1129],{"class":729,"line":990},[727,1124,770],{"class":741},[727,1126,773],{"class":737},[727,1128,997],{"class":776},[727,1130,1000],{"class":741},[717,1132,1135],{"className":719,"code":1133,"filename":1134,"language":722,"meta":723,"style":723},"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",[543,1136,1137,1156,1160,1191,1209,1252,1272,1279],{"__ignoreMap":723},[727,1138,1139,1141,1143,1146,1148,1150,1152,1154],{"class":729,"line":730},[727,1140,734],{"class":733},[727,1142,738],{"class":737},[727,1144,1145],{"class":741}," useLogger",[727,1147,745],{"class":737},[727,1149,748],{"class":733},[727,1151,751],{"class":737},[727,1153,540],{"class":754},[727,1155,757],{"class":737},[727,1157,1158],{"class":729,"line":760},[727,1159,764],{"emptyLinePlaceholder":763},[727,1161,1162,1165,1168,1171,1173,1176,1178,1182,1185,1188],{"class":729,"line":767},[727,1163,1164],{"class":733},"export",[727,1166,1167],{"class":733}," default",[727,1169,1170],{"class":776}," defineEventHandler",[727,1172,779],{"class":741},[727,1174,1175],{"class":901},"async",[727,1177,569],{"class":737},[727,1179,1181],{"class":1180},"sHdIc","event",[727,1183,1184],{"class":737},")",[727,1186,1187],{"class":901}," =>",[727,1189,1190],{"class":737}," {\n",[727,1192,1193,1196,1198,1201,1203,1205,1207],{"class":729,"line":803},[727,1194,1195],{"class":901},"  const",[727,1197,742],{"class":741},[727,1199,1200],{"class":737}," =",[727,1202,1145],{"class":776},[727,1204,779],{"class":818},[727,1206,1181],{"class":741},[727,1208,800],{"class":818},[727,1210,1211,1214,1216,1218,1220,1222,1224,1226,1228,1230,1232,1234,1236,1238,1240,1242,1244,1246,1248,1250],{"class":729,"line":990},[727,1212,1213],{"class":741},"  log",[727,1215,773],{"class":737},[727,1217,953],{"class":776},[727,1219,779],{"class":818},[727,1221,815],{"class":737},[727,1223,1088],{"class":818},[727,1225,822],{"class":737},[727,1227,738],{"class":737},[727,1229,1095],{"class":818},[727,1231,822],{"class":737},[727,1233,1100],{"class":853},[727,1235,790],{"class":737},[727,1237,1105],{"class":818},[727,1239,822],{"class":737},[727,1241,751],{"class":737},[727,1243,1112],{"class":754},[727,1245,782],{"class":737},[727,1247,745],{"class":737},[727,1249,745],{"class":737},[727,1251,800],{"class":818},[727,1253,1255,1258,1260,1263,1265,1269],{"class":729,"line":1254},6,[727,1256,1257],{"class":733},"  return",[727,1259,738],{"class":737},[727,1261,1262],{"class":818}," success",[727,1264,822],{"class":737},[727,1266,1268],{"class":1267},"sfNiH"," true",[727,1270,1271],{"class":737}," }\n",[727,1273,1275],{"class":729,"line":1274},7,[727,1276,1278],{"class":1277},"sHwdD","  \u002F\u002F auto-emitted on response end\n",[727,1280,1282,1285],{"class":729,"line":1281},8,[727,1283,1284],{"class":737},"}",[727,1286,800],{"class":741},[535,1288,1289],{},"One log, all context. Everything you need to understand what happened.",[707,1291,51],{"id":1292},"structured-errors",[535,1294,1295,1296,1298,1299,1301,1302,1304],{},"Errors with actionable context: ",[543,1297,668],{}," it happened, how to ",[543,1300,672],{}," it, and a ",[543,1303,675],{}," to docs:",[866,1306,1307,1431],{},[717,1308,1310],{"className":719,"code":1309,"filename":1134,"language":722,"meta":723,"style":723},"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",[543,1311,1312,1331,1335,1347,1364,1376,1392,1408,1424],{"__ignoreMap":723},[727,1313,1314,1316,1318,1321,1323,1325,1327,1329],{"class":729,"line":730},[727,1315,734],{"class":733},[727,1317,738],{"class":737},[727,1319,1320],{"class":741}," createError",[727,1322,745],{"class":737},[727,1324,748],{"class":733},[727,1326,751],{"class":737},[727,1328,540],{"class":754},[727,1330,757],{"class":737},[727,1332,1333],{"class":729,"line":760},[727,1334,764],{"emptyLinePlaceholder":763},[727,1336,1337,1340,1342,1344],{"class":729,"line":767},[727,1338,1339],{"class":733},"throw",[727,1341,1320],{"class":776},[727,1343,779],{"class":741},[727,1345,1346],{"class":737},"{\n",[727,1348,1349,1352,1354,1356,1359,1361],{"class":729,"line":803},[727,1350,1351],{"class":818},"  message",[727,1353,822],{"class":737},[727,1355,751],{"class":737},[727,1357,1358],{"class":754},"Payment failed",[727,1360,782],{"class":737},[727,1362,1363],{"class":737},",\n",[727,1365,1366,1369,1371,1374],{"class":729,"line":990},[727,1367,1368],{"class":818},"  status",[727,1370,822],{"class":737},[727,1372,1373],{"class":853}," 402",[727,1375,1363],{"class":737},[727,1377,1378,1381,1383,1385,1388,1390],{"class":729,"line":1254},[727,1379,1380],{"class":818},"  why",[727,1382,822],{"class":737},[727,1384,751],{"class":737},[727,1386,1387],{"class":754},"Card declined by issuer (insufficient funds)",[727,1389,782],{"class":737},[727,1391,1363],{"class":737},[727,1393,1394,1397,1399,1401,1404,1406],{"class":729,"line":1274},[727,1395,1396],{"class":818},"  fix",[727,1398,822],{"class":737},[727,1400,751],{"class":737},[727,1402,1403],{"class":754},"Try a different payment method or contact your bank",[727,1405,782],{"class":737},[727,1407,1363],{"class":737},[727,1409,1410,1413,1415,1417,1420,1422],{"class":729,"line":1281},[727,1411,1412],{"class":818},"  link",[727,1414,822],{"class":737},[727,1416,751],{"class":737},[727,1418,1419],{"class":754},"https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined",[727,1421,782],{"class":737},[727,1423,1363],{"class":737},[727,1425,1427,1429],{"class":729,"line":1426},9,[727,1428,1284],{"class":737},[727,1430,800],{"class":741},[717,1432,1437],{"className":1433,"code":1434,"filename":1435,"language":1436,"meta":723,"style":723},"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",[543,1438,1439,1443,1460,1480,1493,1513,1531,1548,1553],{"__ignoreMap":723},[727,1440,1441],{"class":729,"line":730},[727,1442,1346],{"class":737},[727,1444,1445,1448,1451,1454,1456,1458],{"class":729,"line":760},[727,1446,1447],{"class":737},"  \"",[727,1449,1450],{"class":901},"statusCode",[727,1452,1453],{"class":737},"\"",[727,1455,822],{"class":737},[727,1457,1373],{"class":853},[727,1459,1363],{"class":737},[727,1461,1462,1464,1467,1469,1471,1474,1476,1478],{"class":729,"line":767},[727,1463,1447],{"class":737},[727,1465,1466],{"class":901},"message",[727,1468,1453],{"class":737},[727,1470,822],{"class":737},[727,1472,1473],{"class":737}," \"",[727,1475,1358],{"class":754},[727,1477,1453],{"class":737},[727,1479,1363],{"class":737},[727,1481,1482,1484,1487,1489,1491],{"class":729,"line":803},[727,1483,1447],{"class":737},[727,1485,1486],{"class":901},"data",[727,1488,1453],{"class":737},[727,1490,822],{"class":737},[727,1492,1190],{"class":737},[727,1494,1495,1498,1501,1503,1505,1507,1509,1511],{"class":729,"line":990},[727,1496,1497],{"class":737},"    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