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No ",[529,636,637],{},"pino-http"," vs ",[529,640,641],{},"pino"," split, no separate ",[529,644,645],{},"consola"," reporters per environment.",[619,648,649,663],{},[524,650,651,652,655,656,655,659,662],{},"Structured errors with ",[529,653,654],{},"why"," \u002F ",[529,657,658],{},"fix",[529,660,661],{},"link"," built in"," — your error toast finally tells users what went wrong and what to do, your on-call stops reverse-engineering stack traces.",[619,665,666,669,670,673,674,677],{},[524,667,668],{},"Wide events as a free upgrade path"," — when you need to correlate context across an operation, the same logger gives you ",[529,671,672],{},"log.set"," + ",[529,675,676],{},"log.emit"," instead of stitching log lines together later.",[521,679,680,681,684],{},"See the full ",[537,682,683],{"href":508},"feature comparison"," (parity matrix, honest gaps, and migration snippets) for a side-by-side with pino, winston, and consola.",[561,686,688],{"id":687},"three-ways-to-log","Three Ways to Log",[521,690,691],{},"evlog provides three APIs for different contexts. You can use all three in the same project.",[693,694,41],"h3",{"id":695},"simple-logging",[521,697,698,699,701],{},"Fire-and-forget structured logs. Replace ",[529,700,531],{},", consola, or pino:",[703,704,710],"pre",{"className":705,"code":706,"filename":707,"language":708,"meta":709,"style":709},"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","",[529,711,712,744,751,787],{"__ignoreMap":709},[713,714,717,721,725,729,732,735,738,741],"span",{"class":715,"line":716},"line",1,[713,718,720],{"class":719},"s7zQu","import",[713,722,724],{"class":723},"sMK4o"," {",[713,726,728],{"class":727},"sTEyZ"," log",[713,730,731],{"class":723}," }",[713,733,734],{"class":719}," from",[713,736,737],{"class":723}," '",[713,739,526],{"class":740},"sfazB",[713,742,743],{"class":723},"'\n",[713,745,747],{"class":715,"line":746},2,[713,748,750],{"emptyLinePlaceholder":749},true,"\n",[713,752,754,757,760,763,766,769,772,774,777,779,782,784],{"class":715,"line":753},3,[713,755,756],{"class":727},"log",[713,758,759],{"class":723},".",[713,761,598],{"class":762},"s2Zo4",[713,764,765],{"class":727},"(",[713,767,768],{"class":723},"'",[713,770,771],{"class":740},"auth",[713,773,768],{"class":723},[713,775,776],{"class":723},",",[713,778,737],{"class":723},[713,780,781],{"class":740},"User logged in",[713,783,768],{"class":723},[713,785,786],{"class":727},")\n",[713,788,790,792,794,797,799,802,806,809,811,814,816,818,821,823,825,828,830,832,835,837,841,843],{"class":715,"line":789},4,[713,791,756],{"class":727},[713,793,759],{"class":723},[713,795,796],{"class":762},"error",[713,798,765],{"class":727},[713,800,801],{"class":723},"{",[713,803,805],{"class":804},"swJcz"," action",[713,807,808],{"class":723},":",[713,810,737],{"class":723},[713,812,813],{"class":740},"payment",[713,815,768],{"class":723},[713,817,776],{"class":723},[713,819,820],{"class":804}," error",[713,822,808],{"class":723},[713,824,737],{"class":723},[713,826,827],{"class":740},"card_declined",[713,829,768],{"class":723},[713,831,776],{"class":723},[713,833,834],{"class":804}," userId",[713,836,808],{"class":723},[713,838,840],{"class":839},"sbssI"," 42",[713,842,731],{"class":723},[713,844,786],{"class":727},[693,846,46],{"id":847},"wide-events",[521,849,850],{},"Accumulate context progressively over any operation, then emit a single comprehensive event:",[852,853,854,987,1117],"code-group",{},[703,855,858],{"className":705,"code":856,"filename":857,"language":708,"meta":709,"style":709},"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",[529,859,860,879,883,931,974],{"__ignoreMap":709},[713,861,862,864,866,869,871,873,875,877],{"class":715,"line":716},[713,863,720],{"class":719},[713,865,724],{"class":723},[713,867,868],{"class":727}," createLogger",[713,870,731],{"class":723},[713,872,734],{"class":719},[713,874,737],{"class":723},[713,876,526],{"class":740},[713,878,743],{"class":723},[713,880,881],{"class":715,"line":746},[713,882,750],{"emptyLinePlaceholder":749},[713,884,885,889,892,895,897,899,901,904,906,908,911,913,915,918,920,922,925,927,929],{"class":715,"line":753},[713,886,888],{"class":887},"spNyl","const",[713,890,891],{"class":727}," log ",[713,893,894],{"class":723},"=",[713,896,868],{"class":762},[713,898,765],{"class":727},[713,900,801],{"class":723},[713,902,903],{"class":804}," jobId",[713,905,808],{"class":723},[713,907,737],{"class":723},[713,909,910],{"class":740},"sync-001",[713,912,768],{"class":723},[713,914,776],{"class":723},[713,916,917],{"class":804}," queue",[713,919,808],{"class":723},[713,921,737],{"class":723},[713,923,924],{"class":740},"emails",[713,926,768],{"class":723},[713,928,731],{"class":723},[713,930,786],{"class":727},[713,932,933,935,937,940,942,944,947,949,951,954,956,959,961,964,966,968,970,972],{"class":715,"line":789},[713,934,756],{"class":727},[713,936,759],{"class":723},[713,938,939],{"class":762},"set",[713,941,765],{"class":727},[713,943,801],{"class":723},[713,945,946],{"class":804}," batch",[713,948,808],{"class":723},[713,950,724],{"class":723},[713,952,953],{"class":804}," size",[713,955,808],{"class":723},[713,957,958],{"class":839}," 50",[713,960,776],{"class":723},[713,962,963],{"class":804}," processed",[713,965,808],{"class":723},[713,967,958],{"class":839},[713,969,731],{"class":723},[713,971,731],{"class":723},[713,973,786],{"class":727},[713,975,977,979,981,984],{"class":715,"line":976},5,[713,978,756],{"class":727},[713,980,759],{"class":723},[713,982,983],{"class":762},"emit",[713,985,986],{"class":727},"()\n",[703,988,991],{"className":705,"code":989,"filename":990,"language":708,"meta":709,"style":709},"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",[529,992,993,1012,1016,1060,1107],{"__ignoreMap":709},[713,994,995,997,999,1002,1004,1006,1008,1010],{"class":715,"line":716},[713,996,720],{"class":719},[713,998,724],{"class":723},[713,1000,1001],{"class":727}," createRequestLogger",[713,1003,731],{"class":723},[713,1005,734],{"class":719},[713,1007,737],{"class":723},[713,1009,526],{"class":740},[713,1011,743],{"class":723},[713,1013,1014],{"class":715,"line":746},[713,1015,750],{"emptyLinePlaceholder":749},[713,1017,1018,1020,1022,1024,1026,1028,1030,1033,1035,1037,1040,1042,1044,1047,1049,1051,1054,1056,1058],{"class":715,"line":753},[713,1019,888],{"class":887},[713,1021,891],{"class":727},[713,1023,894],{"class":723},[713,1025,1001],{"class":762},[713,1027,765],{"class":727},[713,1029,801],{"class":723},[713,1031,1032],{"class":804}," method",[713,1034,808],{"class":723},[713,1036,737],{"class":723},[713,1038,1039],{"class":740},"POST",[713,1041,768],{"class":723},[713,1043,776],{"class":723},[713,1045,1046],{"class":804}," path",[713,1048,808],{"class":723},[713,1050,737],{"class":723},[713,1052,1053],{"class":740},"\u002Fapi\u002Fcheckout",[713,1055,768],{"class":723},[713,1057,731],{"class":723},[713,1059,786],{"class":727},[713,1061,1062,1064,1066,1068,1070,1072,1075,1077,1079,1082,1084,1087,1089,1092,1094,1096,1099,1101,1103,1105],{"class":715,"line":789},[713,1063,756],{"class":727},[713,1065,759],{"class":723},[713,1067,939],{"class":762},[713,1069,765],{"class":727},[713,1071,801],{"class":723},[713,1073,1074],{"class":804}," user",[713,1076,808],{"class":723},[713,1078,724],{"class":723},[713,1080,1081],{"class":804}," id",[713,1083,808],{"class":723},[713,1085,1086],{"class":839}," 1",[713,1088,776],{"class":723},[713,1090,1091],{"class":804}," plan",[713,1093,808],{"class":723},[713,1095,737],{"class":723},[713,1097,1098],{"class":740},"pro",[713,1100,768],{"class":723},[713,1102,731],{"class":723},[713,1104,731],{"class":723},[713,1106,786],{"class":727},[713,1108,1109,1111,1113,1115],{"class":715,"line":976},[713,1110,756],{"class":727},[713,1112,759],{"class":723},[713,1114,983],{"class":762},[713,1116,986],{"class":727},[703,1118,1121],{"className":705,"code":1119,"filename":1120,"language":708,"meta":709,"style":709},"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",[529,1122,1123,1142,1146,1177,1195,1238,1258,1265],{"__ignoreMap":709},[713,1124,1125,1127,1129,1132,1134,1136,1138,1140],{"class":715,"line":716},[713,1126,720],{"class":719},[713,1128,724],{"class":723},[713,1130,1131],{"class":727}," useLogger",[713,1133,731],{"class":723},[713,1135,734],{"class":719},[713,1137,737],{"class":723},[713,1139,526],{"class":740},[713,1141,743],{"class":723},[713,1143,1144],{"class":715,"line":746},[713,1145,750],{"emptyLinePlaceholder":749},[713,1147,1148,1151,1154,1157,1159,1162,1164,1168,1171,1174],{"class":715,"line":753},[713,1149,1150],{"class":719},"export",[713,1152,1153],{"class":719}," default",[713,1155,1156],{"class":762}," defineEventHandler",[713,1158,765],{"class":727},[713,1160,1161],{"class":887},"async",[713,1163,555],{"class":723},[713,1165,1167],{"class":1166},"sHdIc","event",[713,1169,1170],{"class":723},")",[713,1172,1173],{"class":887}," =>",[713,1175,1176],{"class":723}," {\n",[713,1178,1179,1182,1184,1187,1189,1191,1193],{"class":715,"line":789},[713,1180,1181],{"class":887},"  const",[713,1183,728],{"class":727},[713,1185,1186],{"class":723}," =",[713,1188,1131],{"class":762},[713,1190,765],{"class":804},[713,1192,1167],{"class":727},[713,1194,786],{"class":804},[713,1196,1197,1200,1202,1204,1206,1208,1210,1212,1214,1216,1218,1220,1222,1224,1226,1228,1230,1232,1234,1236],{"class":715,"line":976},[713,1198,1199],{"class":727},"  log",[713,1201,759],{"class":723},[713,1203,939],{"class":762},[713,1205,765],{"class":804},[713,1207,801],{"class":723},[713,1209,1074],{"class":804},[713,1211,808],{"class":723},[713,1213,724],{"class":723},[713,1215,1081],{"class":804},[713,1217,808],{"class":723},[713,1219,1086],{"class":839},[713,1221,776],{"class":723},[713,1223,1091],{"class":804},[713,1225,808],{"class":723},[713,1227,737],{"class":723},[713,1229,1098],{"class":740},[713,1231,768],{"class":723},[713,1233,731],{"class":723},[713,1235,731],{"class":723},[713,1237,786],{"class":804},[713,1239,1241,1244,1246,1249,1251,1255],{"class":715,"line":1240},6,[713,1242,1243],{"class":719},"  return",[713,1245,724],{"class":723},[713,1247,1248],{"class":804}," success",[713,1250,808],{"class":723},[713,1252,1254],{"class":1253},"sfNiH"," true",[713,1256,1257],{"class":723}," }\n",[713,1259,1261],{"class":715,"line":1260},7,[713,1262,1264],{"class":1263},"sHwdD","  \u002F\u002F auto-emitted on response end\n",[713,1266,1268,1271],{"class":715,"line":1267},8,[713,1269,1270],{"class":723},"}",[713,1272,786],{"class":727},[521,1274,1275],{},"One log, all context. Everything you need to understand what happened.",[693,1277,51],{"id":1278},"structured-errors",[521,1280,1281,1282,1284,1285,1287,1288,1290],{},"Errors with actionable context: ",[529,1283,654],{}," it happened, how to ",[529,1286,658],{}," it, and a ",[529,1289,661],{}," to docs:",[852,1292,1293,1417],{},[703,1294,1296],{"className":705,"code":1295,"filename":1120,"language":708,"meta":709,"style":709},"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",[529,1297,1298,1317,1321,1333,1350,1362,1378,1394,1410],{"__ignoreMap":709},[713,1299,1300,1302,1304,1307,1309,1311,1313,1315],{"class":715,"line":716},[713,1301,720],{"class":719},[713,1303,724],{"class":723},[713,1305,1306],{"class":727}," createError",[713,1308,731],{"class":723},[713,1310,734],{"class":719},[713,1312,737],{"class":723},[713,1314,526],{"class":740},[713,1316,743],{"class":723},[713,1318,1319],{"class":715,"line":746},[713,1320,750],{"emptyLinePlaceholder":749},[713,1322,1323,1326,1328,1330],{"class":715,"line":753},[713,1324,1325],{"class":719},"throw",[713,1327,1306],{"class":762},[713,1329,765],{"class":727},[713,1331,1332],{"class":723},"{\n",[713,1334,1335,1338,1340,1342,1345,1347],{"class":715,"line":789},[713,1336,1337],{"class":804},"  message",[713,1339,808],{"class":723},[713,1341,737],{"class":723},[713,1343,1344],{"class":740},"Payment failed",[713,1346,768],{"class":723},[713,1348,1349],{"class":723},",\n",[713,1351,1352,1355,1357,1360],{"class":715,"line":976},[713,1353,1354],{"class":804},"  status",[713,1356,808],{"class":723},[713,1358,1359],{"class":839}," 402",[713,1361,1349],{"class":723},[713,1363,1364,1367,1369,1371,1374,1376],{"class":715,"line":1240},[713,1365,1366],{"class":804},"  why",[713,1368,808],{"class":723},[713,1370,737],{"class":723},[713,1372,1373],{"class":740},"Card declined by issuer (insufficient funds)",[713,1375,768],{"class":723},[713,1377,1349],{"class":723},[713,1379,1380,1383,1385,1387,1390,1392],{"class":715,"line":1260},[713,1381,1382],{"class":804},"  fix",[713,1384,808],{"class":723},[713,1386,737],{"class":723},[713,1388,1389],{"class":740},"Try a different payment method or contact your bank",[713,1391,768],{"class":723},[713,1393,1349],{"class":723},[713,1395,1396,1399,1401,1403,1406,1408],{"class":715,"line":1267},[713,1397,1398],{"class":804},"  link",[713,1400,808],{"class":723},[713,1402,737],{"class":723},[713,1404,1405],{"class":740},"https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined",[713,1407,768],{"class":723},[713,1409,1349],{"class":723},[713,1411,1413,1415],{"class":715,"line":1412},9,[713,1414,1270],{"class":723},[713,1416,786],{"class":727},[703,1418,1423],{"className":1419,"code":1420,"filename":1421,"language":1422,"meta":709,"style":709},"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",[529,1424,1425,1429,1446,1466,1479,1499,1517,1534,1539],{"__ignoreMap":709},[713,1426,1427],{"class":715,"line":716},[713,1428,1332],{"class":723},[713,1430,1431,1434,1437,1440,1442,1444],{"class":715,"line":746},[713,1432,1433],{"class":723},"  \"",[713,1435,1436],{"class":887},"statusCode",[713,1438,1439],{"class":723},"\"",[713,1441,808],{"class":723},[713,1443,1359],{"class":839},[713,1445,1349],{"class":723},[713,1447,1448,1450,1453,1455,1457,1460,1462,1464],{"class":715,"line":753},[713,1449,1433],{"class":723},[713,1451,1452],{"class":887},"message",[713,1454,1439],{"class":723},[713,1456,808],{"class":723},[713,1458,1459],{"class":723}," \"",[713,1461,1344],{"class":740},[713,1463,1439],{"class":723},[713,1465,1349],{"class":723},[713,1467,1468,1470,1473,1475,1477],{"class":715,"line":789},[713,1469,1433],{"class":723},[713,1471,1472],{"class":887},"data",[713,1474,1439],{"class":723},[713,1476,808],{"class":723},[713,1478,1176],{"class":723},[713,1480,1481,1484,1487,1489,1491,1493,1495,1497],{"class":715,"line":976},[713,1482,1483],{"class":723},"    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