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No ",[524,631,632],{},"pino-http"," vs ",[524,635,636],{},"pino"," split, no separate ",[524,639,640],{},"consola"," reporters per environment.",[614,643,644,658],{},[519,645,646,647,650,651,650,654,657],{},"Structured errors with ",[524,648,649],{},"why"," \u002F ",[524,652,653],{},"fix",[524,655,656],{},"link"," built in"," — your error toast finally tells users what went wrong and what to do, your on-call stops reverse-engineering stack traces.",[614,660,661,664,665,668,669,672],{},[519,662,663],{},"Wide events as a free upgrade path"," — when you need to correlate context across an operation, the same logger gives you ",[524,666,667],{},"log.set"," + ",[524,670,671],{},"log.emit"," instead of stitching log lines together later.",[516,674,675,676,679],{},"See the full ",[532,677,678],{"href":503},"feature comparison"," (parity matrix, honest gaps, and migration snippets) for a side-by-side with pino, winston, and consola.",[556,681,683],{"id":682},"three-ways-to-log","Three Ways to Log",[516,685,686],{},"evlog provides three APIs for different contexts. You can use all three in the same project.",[688,689,41],"h3",{"id":690},"simple-logging",[516,692,693,694,696],{},"Fire-and-forget structured logs. Replace ",[524,695,526],{},", consola, or pino:",[698,699,705],"pre",{"className":700,"code":701,"filename":702,"language":703,"meta":704,"style":704},"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","",[524,706,707,739,746,782],{"__ignoreMap":704},[708,709,712,716,720,724,727,730,733,736],"span",{"class":710,"line":711},"line",1,[708,713,715],{"class":714},"s7zQu","import",[708,717,719],{"class":718},"sMK4o"," {",[708,721,723],{"class":722},"sTEyZ"," log",[708,725,726],{"class":718}," }",[708,728,729],{"class":714}," from",[708,731,732],{"class":718}," '",[708,734,521],{"class":735},"sfazB",[708,737,738],{"class":718},"'\n",[708,740,742],{"class":710,"line":741},2,[708,743,745],{"emptyLinePlaceholder":744},true,"\n",[708,747,749,752,755,758,761,764,767,769,772,774,777,779],{"class":710,"line":748},3,[708,750,751],{"class":722},"log",[708,753,754],{"class":718},".",[708,756,593],{"class":757},"s2Zo4",[708,759,760],{"class":722},"(",[708,762,763],{"class":718},"'",[708,765,766],{"class":735},"auth",[708,768,763],{"class":718},[708,770,771],{"class":718},",",[708,773,732],{"class":718},[708,775,776],{"class":735},"User logged in",[708,778,763],{"class":718},[708,780,781],{"class":722},")\n",[708,783,785,787,789,792,794,797,801,804,806,809,811,813,816,818,820,823,825,827,830,832,836,838],{"class":710,"line":784},4,[708,786,751],{"class":722},[708,788,754],{"class":718},[708,790,791],{"class":757},"error",[708,793,760],{"class":722},[708,795,796],{"class":718},"{",[708,798,800],{"class":799},"swJcz"," action",[708,802,803],{"class":718},":",[708,805,732],{"class":718},[708,807,808],{"class":735},"payment",[708,810,763],{"class":718},[708,812,771],{"class":718},[708,814,815],{"class":799}," error",[708,817,803],{"class":718},[708,819,732],{"class":718},[708,821,822],{"class":735},"card_declined",[708,824,763],{"class":718},[708,826,771],{"class":718},[708,828,829],{"class":799}," userId",[708,831,803],{"class":718},[708,833,835],{"class":834},"sbssI"," 42",[708,837,726],{"class":718},[708,839,781],{"class":722},[688,841,46],{"id":842},"wide-events",[516,844,845],{},"Accumulate context progressively over any operation, then emit a single comprehensive event:",[847,848,849,982,1112],"code-group",{},[698,850,853],{"className":700,"code":851,"filename":852,"language":703,"meta":704,"style":704},"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",[524,854,855,874,878,926,969],{"__ignoreMap":704},[708,856,857,859,861,864,866,868,870,872],{"class":710,"line":711},[708,858,715],{"class":714},[708,860,719],{"class":718},[708,862,863],{"class":722}," createLogger",[708,865,726],{"class":718},[708,867,729],{"class":714},[708,869,732],{"class":718},[708,871,521],{"class":735},[708,873,738],{"class":718},[708,875,876],{"class":710,"line":741},[708,877,745],{"emptyLinePlaceholder":744},[708,879,880,884,887,890,892,894,896,899,901,903,906,908,910,913,915,917,920,922,924],{"class":710,"line":748},[708,881,883],{"class":882},"spNyl","const",[708,885,886],{"class":722}," log ",[708,888,889],{"class":718},"=",[708,891,863],{"class":757},[708,893,760],{"class":722},[708,895,796],{"class":718},[708,897,898],{"class":799}," jobId",[708,900,803],{"class":718},[708,902,732],{"class":718},[708,904,905],{"class":735},"sync-001",[708,907,763],{"class":718},[708,909,771],{"class":718},[708,911,912],{"class":799}," queue",[708,914,803],{"class":718},[708,916,732],{"class":718},[708,918,919],{"class":735},"emails",[708,921,763],{"class":718},[708,923,726],{"class":718},[708,925,781],{"class":722},[708,927,928,930,932,935,937,939,942,944,946,949,951,954,956,959,961,963,965,967],{"class":710,"line":784},[708,929,751],{"class":722},[708,931,754],{"class":718},[708,933,934],{"class":757},"set",[708,936,760],{"class":722},[708,938,796],{"class":718},[708,940,941],{"class":799}," batch",[708,943,803],{"class":718},[708,945,719],{"class":718},[708,947,948],{"class":799}," size",[708,950,803],{"class":718},[708,952,953],{"class":834}," 50",[708,955,771],{"class":718},[708,957,958],{"class":799}," processed",[708,960,803],{"class":718},[708,962,953],{"class":834},[708,964,726],{"class":718},[708,966,726],{"class":718},[708,968,781],{"class":722},[708,970,972,974,976,979],{"class":710,"line":971},5,[708,973,751],{"class":722},[708,975,754],{"class":718},[708,977,978],{"class":757},"emit",[708,980,981],{"class":722},"()\n",[698,983,986],{"className":700,"code":984,"filename":985,"language":703,"meta":704,"style":704},"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",[524,987,988,1007,1011,1055,1102],{"__ignoreMap":704},[708,989,990,992,994,997,999,1001,1003,1005],{"class":710,"line":711},[708,991,715],{"class":714},[708,993,719],{"class":718},[708,995,996],{"class":722}," createRequestLogger",[708,998,726],{"class":718},[708,1000,729],{"class":714},[708,1002,732],{"class":718},[708,1004,521],{"class":735},[708,1006,738],{"class":718},[708,1008,1009],{"class":710,"line":741},[708,1010,745],{"emptyLinePlaceholder":744},[708,1012,1013,1015,1017,1019,1021,1023,1025,1028,1030,1032,1035,1037,1039,1042,1044,1046,1049,1051,1053],{"class":710,"line":748},[708,1014,883],{"class":882},[708,1016,886],{"class":722},[708,1018,889],{"class":718},[708,1020,996],{"class":757},[708,1022,760],{"class":722},[708,1024,796],{"class":718},[708,1026,1027],{"class":799}," method",[708,1029,803],{"class":718},[708,1031,732],{"class":718},[708,1033,1034],{"class":735},"POST",[708,1036,763],{"class":718},[708,1038,771],{"class":718},[708,1040,1041],{"class":799}," path",[708,1043,803],{"class":718},[708,1045,732],{"class":718},[708,1047,1048],{"class":735},"\u002Fapi\u002Fcheckout",[708,1050,763],{"class":718},[708,1052,726],{"class":718},[708,1054,781],{"class":722},[708,1056,1057,1059,1061,1063,1065,1067,1070,1072,1074,1077,1079,1082,1084,1087,1089,1091,1094,1096,1098,1100],{"class":710,"line":784},[708,1058,751],{"class":722},[708,1060,754],{"class":718},[708,1062,934],{"class":757},[708,1064,760],{"class":722},[708,1066,796],{"class":718},[708,1068,1069],{"class":799}," user",[708,1071,803],{"class":718},[708,1073,719],{"class":718},[708,1075,1076],{"class":799}," id",[708,1078,803],{"class":718},[708,1080,1081],{"class":834}," 1",[708,1083,771],{"class":718},[708,1085,1086],{"class":799}," plan",[708,1088,803],{"class":718},[708,1090,732],{"class":718},[708,1092,1093],{"class":735},"pro",[708,1095,763],{"class":718},[708,1097,726],{"class":718},[708,1099,726],{"class":718},[708,1101,781],{"class":722},[708,1103,1104,1106,1108,1110],{"class":710,"line":971},[708,1105,751],{"class":722},[708,1107,754],{"class":718},[708,1109,978],{"class":757},[708,1111,981],{"class":722},[698,1113,1116],{"className":700,"code":1114,"filename":1115,"language":703,"meta":704,"style":704},"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",[524,1117,1118,1137,1141,1172,1190,1233,1253,1260],{"__ignoreMap":704},[708,1119,1120,1122,1124,1127,1129,1131,1133,1135],{"class":710,"line":711},[708,1121,715],{"class":714},[708,1123,719],{"class":718},[708,1125,1126],{"class":722}," useLogger",[708,1128,726],{"class":718},[708,1130,729],{"class":714},[708,1132,732],{"class":718},[708,1134,521],{"class":735},[708,1136,738],{"class":718},[708,1138,1139],{"class":710,"line":741},[708,1140,745],{"emptyLinePlaceholder":744},[708,1142,1143,1146,1149,1152,1154,1157,1159,1163,1166,1169],{"class":710,"line":748},[708,1144,1145],{"class":714},"export",[708,1147,1148],{"class":714}," default",[708,1150,1151],{"class":757}," defineEventHandler",[708,1153,760],{"class":722},[708,1155,1156],{"class":882},"async",[708,1158,550],{"class":718},[708,1160,1162],{"class":1161},"sHdIc","event",[708,1164,1165],{"class":718},")",[708,1167,1168],{"class":882}," =>",[708,1170,1171],{"class":718}," {\n",[708,1173,1174,1177,1179,1182,1184,1186,1188],{"class":710,"line":784},[708,1175,1176],{"class":882},"  const",[708,1178,723],{"class":722},[708,1180,1181],{"class":718}," =",[708,1183,1126],{"class":757},[708,1185,760],{"class":799},[708,1187,1162],{"class":722},[708,1189,781],{"class":799},[708,1191,1192,1195,1197,1199,1201,1203,1205,1207,1209,1211,1213,1215,1217,1219,1221,1223,1225,1227,1229,1231],{"class":710,"line":971},[708,1193,1194],{"class":722},"  log",[708,1196,754],{"class":718},[708,1198,934],{"class":757},[708,1200,760],{"class":799},[708,1202,796],{"class":718},[708,1204,1069],{"class":799},[708,1206,803],{"class":718},[708,1208,719],{"class":718},[708,1210,1076],{"class":799},[708,1212,803],{"class":718},[708,1214,1081],{"class":834},[708,1216,771],{"class":718},[708,1218,1086],{"class":799},[708,1220,803],{"class":718},[708,1222,732],{"class":718},[708,1224,1093],{"class":735},[708,1226,763],{"class":718},[708,1228,726],{"class":718},[708,1230,726],{"class":718},[708,1232,781],{"class":799},[708,1234,1236,1239,1241,1244,1246,1250],{"class":710,"line":1235},6,[708,1237,1238],{"class":714},"  return",[708,1240,719],{"class":718},[708,1242,1243],{"class":799}," success",[708,1245,803],{"class":718},[708,1247,1249],{"class":1248},"sfNiH"," true",[708,1251,1252],{"class":718}," }\n",[708,1254,1256],{"class":710,"line":1255},7,[708,1257,1259],{"class":1258},"sHwdD","  \u002F\u002F auto-emitted on response end\n",[708,1261,1263,1266],{"class":710,"line":1262},8,[708,1264,1265],{"class":718},"}",[708,1267,781],{"class":722},[516,1269,1270],{},"One log, all context. Everything you need to understand what happened.",[688,1272,51],{"id":1273},"structured-errors",[516,1275,1276,1277,1279,1280,1282,1283,1285],{},"Errors with actionable context: ",[524,1278,649],{}," it happened, how to ",[524,1281,653],{}," it, and a ",[524,1284,656],{}," to docs:",[847,1287,1288,1412],{},[698,1289,1291],{"className":700,"code":1290,"filename":1115,"language":703,"meta":704,"style":704},"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",[524,1292,1293,1312,1316,1328,1345,1357,1373,1389,1405],{"__ignoreMap":704},[708,1294,1295,1297,1299,1302,1304,1306,1308,1310],{"class":710,"line":711},[708,1296,715],{"class":714},[708,1298,719],{"class":718},[708,1300,1301],{"class":722}," createError",[708,1303,726],{"class":718},[708,1305,729],{"class":714},[708,1307,732],{"class":718},[708,1309,521],{"class":735},[708,1311,738],{"class":718},[708,1313,1314],{"class":710,"line":741},[708,1315,745],{"emptyLinePlaceholder":744},[708,1317,1318,1321,1323,1325],{"class":710,"line":748},[708,1319,1320],{"class":714},"throw",[708,1322,1301],{"class":757},[708,1324,760],{"class":722},[708,1326,1327],{"class":718},"{\n",[708,1329,1330,1333,1335,1337,1340,1342],{"class":710,"line":784},[708,1331,1332],{"class":799},"  message",[708,1334,803],{"class":718},[708,1336,732],{"class":718},[708,1338,1339],{"class":735},"Payment failed",[708,1341,763],{"class":718},[708,1343,1344],{"class":718},",\n",[708,1346,1347,1350,1352,1355],{"class":710,"line":971},[708,1348,1349],{"class":799},"  status",[708,1351,803],{"class":718},[708,1353,1354],{"class":834}," 402",[708,1356,1344],{"class":718},[708,1358,1359,1362,1364,1366,1369,1371],{"class":710,"line":1235},[708,1360,1361],{"class":799},"  why",[708,1363,803],{"class":718},[708,1365,732],{"class":718},[708,1367,1368],{"class":735},"Card declined by issuer (insufficient funds)",[708,1370,763],{"class":718},[708,1372,1344],{"class":718},[708,1374,1375,1378,1380,1382,1385,1387],{"class":710,"line":1255},[708,1376,1377],{"class":799},"  fix",[708,1379,803],{"class":718},[708,1381,732],{"class":718},[708,1383,1384],{"class":735},"Try a different payment method or contact your bank",[708,1386,763],{"class":718},[708,1388,1344],{"class":718},[708,1390,1391,1394,1396,1398,1401,1403],{"class":710,"line":1262},[708,1392,1393],{"class":799},"  link",[708,1395,803],{"class":718},[708,1397,732],{"class":718},[708,1399,1400],{"class":735},"https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined",[708,1402,763],{"class":718},[708,1404,1344],{"class":718},[708,1406,1408,1410],{"class":710,"line":1407},9,[708,1409,1265],{"class":718},[708,1411,781],{"class":722},[698,1413,1418],{"className":1414,"code":1415,"filename":1416,"language":1417,"meta":704,"style":704},"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",[524,1419,1420,1424,1441,1461,1474,1494,1512,1529,1534],{"__ignoreMap":704},[708,1421,1422],{"class":710,"line":711},[708,1423,1327],{"class":718},[708,1425,1426,1429,1432,1435,1437,1439],{"class":710,"line":741},[708,1427,1428],{"class":718},"  \"",[708,1430,1431],{"class":882},"statusCode",[708,1433,1434],{"class":718},"\"",[708,1436,803],{"class":718},[708,1438,1354],{"class":834},[708,1440,1344],{"class":718},[708,1442,1443,1445,1448,1450,1452,1455,1457,1459],{"class":710,"line":748},[708,1444,1428],{"class":718},[708,1446,1447],{"class":882},"message",[708,1449,1434],{"class":718},[708,1451,803],{"class":718},[708,1453,1454],{"class":718}," \"",[708,1456,1339],{"class":735},[708,1458,1434],{"class":718},[708,1460,1344],{"class":718},[708,1462,1463,1465,1468,1470,1472],{"class":710,"line":784},[708,1464,1428],{"class":718},[708,1466,1467],{"class":882},"data",[708,1469,1434],{"class":718},[708,1471,803],{"class":718},[708,1473,1171],{"class":718},[708,1475,1476,1479,1482,1484,1486,1488,1490,1492],{"class":710,"line":971},[708,1477,1478],{"class":718},"    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