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No ",[534,641,642],{},"pino-http"," vs ",[534,645,646],{},"pino"," split, no separate ",[534,649,650],{},"consola"," reporters per environment.",[624,653,654,668],{},[529,655,656,657,660,661,660,664,667],{},"Structured errors with ",[534,658,659],{},"why"," \u002F ",[534,662,663],{},"fix",[534,665,666],{},"link"," built in"," — your error toast finally tells users what went wrong and what to do, your on-call stops reverse-engineering stack traces.",[624,670,671,674,675,678,679,682],{},[529,672,673],{},"Wide events as a free upgrade path"," — when you need to correlate context across an operation, the same logger gives you ",[534,676,677],{},"log.set"," + ",[534,680,681],{},"log.emit"," instead of stitching log lines together later.",[526,684,685,686,689],{},"See the full ",[542,687,688],{"href":513},"feature comparison"," (parity matrix, honest gaps, and migration snippets) for a side-by-side with pino, winston, and consola.",[566,691,693],{"id":692},"three-ways-to-log","Three Ways to Log",[526,695,696],{},"evlog provides three APIs for different contexts. You can use all three in the same project.",[698,699,41],"h3",{"id":700},"simple-logging",[526,702,703,704,706],{},"Fire-and-forget structured logs. Replace ",[534,705,536],{},", consola, or pino:",[708,709,715],"pre",{"className":710,"code":711,"filename":712,"language":713,"meta":714,"style":714},"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","",[534,716,717,749,756,792],{"__ignoreMap":714},[718,719,722,726,730,734,737,740,743,746],"span",{"class":720,"line":721},"line",1,[718,723,725],{"class":724},"s7zQu","import",[718,727,729],{"class":728},"sMK4o"," {",[718,731,733],{"class":732},"sTEyZ"," log",[718,735,736],{"class":728}," }",[718,738,739],{"class":724}," from",[718,741,742],{"class":728}," '",[718,744,531],{"class":745},"sfazB",[718,747,748],{"class":728},"'\n",[718,750,752],{"class":720,"line":751},2,[718,753,755],{"emptyLinePlaceholder":754},true,"\n",[718,757,759,762,765,768,771,774,777,779,782,784,787,789],{"class":720,"line":758},3,[718,760,761],{"class":732},"log",[718,763,764],{"class":728},".",[718,766,603],{"class":767},"s2Zo4",[718,769,770],{"class":732},"(",[718,772,773],{"class":728},"'",[718,775,776],{"class":745},"auth",[718,778,773],{"class":728},[718,780,781],{"class":728},",",[718,783,742],{"class":728},[718,785,786],{"class":745},"User logged in",[718,788,773],{"class":728},[718,790,791],{"class":732},")\n",[718,793,795,797,799,802,804,807,811,814,816,819,821,823,826,828,830,833,835,837,840,842,846,848],{"class":720,"line":794},4,[718,796,761],{"class":732},[718,798,764],{"class":728},[718,800,801],{"class":767},"error",[718,803,770],{"class":732},[718,805,806],{"class":728},"{",[718,808,810],{"class":809},"swJcz"," action",[718,812,813],{"class":728},":",[718,815,742],{"class":728},[718,817,818],{"class":745},"payment",[718,820,773],{"class":728},[718,822,781],{"class":728},[718,824,825],{"class":809}," error",[718,827,813],{"class":728},[718,829,742],{"class":728},[718,831,832],{"class":745},"card_declined",[718,834,773],{"class":728},[718,836,781],{"class":728},[718,838,839],{"class":809}," userId",[718,841,813],{"class":728},[718,843,845],{"class":844},"sbssI"," 42",[718,847,736],{"class":728},[718,849,791],{"class":732},[698,851,46],{"id":852},"wide-events",[526,854,855],{},"Accumulate context progressively over any operation, then emit a single comprehensive event:",[857,858,859,992,1122],"code-group",{},[708,860,863],{"className":710,"code":861,"filename":862,"language":713,"meta":714,"style":714},"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",[534,864,865,884,888,936,979],{"__ignoreMap":714},[718,866,867,869,871,874,876,878,880,882],{"class":720,"line":721},[718,868,725],{"class":724},[718,870,729],{"class":728},[718,872,873],{"class":732}," createLogger",[718,875,736],{"class":728},[718,877,739],{"class":724},[718,879,742],{"class":728},[718,881,531],{"class":745},[718,883,748],{"class":728},[718,885,886],{"class":720,"line":751},[718,887,755],{"emptyLinePlaceholder":754},[718,889,890,894,897,900,902,904,906,909,911,913,916,918,920,923,925,927,930,932,934],{"class":720,"line":758},[718,891,893],{"class":892},"spNyl","const",[718,895,896],{"class":732}," log ",[718,898,899],{"class":728},"=",[718,901,873],{"class":767},[718,903,770],{"class":732},[718,905,806],{"class":728},[718,907,908],{"class":809}," jobId",[718,910,813],{"class":728},[718,912,742],{"class":728},[718,914,915],{"class":745},"sync-001",[718,917,773],{"class":728},[718,919,781],{"class":728},[718,921,922],{"class":809}," queue",[718,924,813],{"class":728},[718,926,742],{"class":728},[718,928,929],{"class":745},"emails",[718,931,773],{"class":728},[718,933,736],{"class":728},[718,935,791],{"class":732},[718,937,938,940,942,945,947,949,952,954,956,959,961,964,966,969,971,973,975,977],{"class":720,"line":794},[718,939,761],{"class":732},[718,941,764],{"class":728},[718,943,944],{"class":767},"set",[718,946,770],{"class":732},[718,948,806],{"class":728},[718,950,951],{"class":809}," batch",[718,953,813],{"class":728},[718,955,729],{"class":728},[718,957,958],{"class":809}," size",[718,960,813],{"class":728},[718,962,963],{"class":844}," 50",[718,965,781],{"class":728},[718,967,968],{"class":809}," processed",[718,970,813],{"class":728},[718,972,963],{"class":844},[718,974,736],{"class":728},[718,976,736],{"class":728},[718,978,791],{"class":732},[718,980,982,984,986,989],{"class":720,"line":981},5,[718,983,761],{"class":732},[718,985,764],{"class":728},[718,987,988],{"class":767},"emit",[718,990,991],{"class":732},"()\n",[708,993,996],{"className":710,"code":994,"filename":995,"language":713,"meta":714,"style":714},"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",[534,997,998,1017,1021,1065,1112],{"__ignoreMap":714},[718,999,1000,1002,1004,1007,1009,1011,1013,1015],{"class":720,"line":721},[718,1001,725],{"class":724},[718,1003,729],{"class":728},[718,1005,1006],{"class":732}," createRequestLogger",[718,1008,736],{"class":728},[718,1010,739],{"class":724},[718,1012,742],{"class":728},[718,1014,531],{"class":745},[718,1016,748],{"class":728},[718,1018,1019],{"class":720,"line":751},[718,1020,755],{"emptyLinePlaceholder":754},[718,1022,1023,1025,1027,1029,1031,1033,1035,1038,1040,1042,1045,1047,1049,1052,1054,1056,1059,1061,1063],{"class":720,"line":758},[718,1024,893],{"class":892},[718,1026,896],{"class":732},[718,1028,899],{"class":728},[718,1030,1006],{"class":767},[718,1032,770],{"class":732},[718,1034,806],{"class":728},[718,1036,1037],{"class":809}," method",[718,1039,813],{"class":728},[718,1041,742],{"class":728},[718,1043,1044],{"class":745},"POST",[718,1046,773],{"class":728},[718,1048,781],{"class":728},[718,1050,1051],{"class":809}," path",[718,1053,813],{"class":728},[718,1055,742],{"class":728},[718,1057,1058],{"class":745},"\u002Fapi\u002Fcheckout",[718,1060,773],{"class":728},[718,1062,736],{"class":728},[718,1064,791],{"class":732},[718,1066,1067,1069,1071,1073,1075,1077,1080,1082,1084,1087,1089,1092,1094,1097,1099,1101,1104,1106,1108,1110],{"class":720,"line":794},[718,1068,761],{"class":732},[718,1070,764],{"class":728},[718,1072,944],{"class":767},[718,1074,770],{"class":732},[718,1076,806],{"class":728},[718,1078,1079],{"class":809}," user",[718,1081,813],{"class":728},[718,1083,729],{"class":728},[718,1085,1086],{"class":809}," id",[718,1088,813],{"class":728},[718,1090,1091],{"class":844}," 1",[718,1093,781],{"class":728},[718,1095,1096],{"class":809}," plan",[718,1098,813],{"class":728},[718,1100,742],{"class":728},[718,1102,1103],{"class":745},"pro",[718,1105,773],{"class":728},[718,1107,736],{"class":728},[718,1109,736],{"class":728},[718,1111,791],{"class":732},[718,1113,1114,1116,1118,1120],{"class":720,"line":981},[718,1115,761],{"class":732},[718,1117,764],{"class":728},[718,1119,988],{"class":767},[718,1121,991],{"class":732},[708,1123,1126],{"className":710,"code":1124,"filename":1125,"language":713,"meta":714,"style":714},"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",[534,1127,1128,1147,1151,1182,1200,1243,1263,1270],{"__ignoreMap":714},[718,1129,1130,1132,1134,1137,1139,1141,1143,1145],{"class":720,"line":721},[718,1131,725],{"class":724},[718,1133,729],{"class":728},[718,1135,1136],{"class":732}," useLogger",[718,1138,736],{"class":728},[718,1140,739],{"class":724},[718,1142,742],{"class":728},[718,1144,531],{"class":745},[718,1146,748],{"class":728},[718,1148,1149],{"class":720,"line":751},[718,1150,755],{"emptyLinePlaceholder":754},[718,1152,1153,1156,1159,1162,1164,1167,1169,1173,1176,1179],{"class":720,"line":758},[718,1154,1155],{"class":724},"export",[718,1157,1158],{"class":724}," default",[718,1160,1161],{"class":767}," defineEventHandler",[718,1163,770],{"class":732},[718,1165,1166],{"class":892},"async",[718,1168,560],{"class":728},[718,1170,1172],{"class":1171},"sHdIc","event",[718,1174,1175],{"class":728},")",[718,1177,1178],{"class":892}," =>",[718,1180,1181],{"class":728}," {\n",[718,1183,1184,1187,1189,1192,1194,1196,1198],{"class":720,"line":794},[718,1185,1186],{"class":892},"  const",[718,1188,733],{"class":732},[718,1190,1191],{"class":728}," =",[718,1193,1136],{"class":767},[718,1195,770],{"class":809},[718,1197,1172],{"class":732},[718,1199,791],{"class":809},[718,1201,1202,1205,1207,1209,1211,1213,1215,1217,1219,1221,1223,1225,1227,1229,1231,1233,1235,1237,1239,1241],{"class":720,"line":981},[718,1203,1204],{"class":732},"  log",[718,1206,764],{"class":728},[718,1208,944],{"class":767},[718,1210,770],{"class":809},[718,1212,806],{"class":728},[718,1214,1079],{"class":809},[718,1216,813],{"class":728},[718,1218,729],{"class":728},[718,1220,1086],{"class":809},[718,1222,813],{"class":728},[718,1224,1091],{"class":844},[718,1226,781],{"class":728},[718,1228,1096],{"class":809},[718,1230,813],{"class":728},[718,1232,742],{"class":728},[718,1234,1103],{"class":745},[718,1236,773],{"class":728},[718,1238,736],{"class":728},[718,1240,736],{"class":728},[718,1242,791],{"class":809},[718,1244,1246,1249,1251,1254,1256,1260],{"class":720,"line":1245},6,[718,1247,1248],{"class":724},"  return",[718,1250,729],{"class":728},[718,1252,1253],{"class":809}," success",[718,1255,813],{"class":728},[718,1257,1259],{"class":1258},"sfNiH"," true",[718,1261,1262],{"class":728}," }\n",[718,1264,1266],{"class":720,"line":1265},7,[718,1267,1269],{"class":1268},"sHwdD","  \u002F\u002F auto-emitted on response end\n",[718,1271,1273,1276],{"class":720,"line":1272},8,[718,1274,1275],{"class":728},"}",[718,1277,791],{"class":732},[526,1279,1280],{},"One log, all context. Everything you need to understand what happened.",[698,1282,51],{"id":1283},"structured-errors",[526,1285,1286,1287,1289,1290,1292,1293,1295],{},"Errors with actionable context: ",[534,1288,659],{}," it happened, how to ",[534,1291,663],{}," it, and a ",[534,1294,666],{}," to docs:",[857,1297,1298,1422],{},[708,1299,1301],{"className":710,"code":1300,"filename":1125,"language":713,"meta":714,"style":714},"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",[534,1302,1303,1322,1326,1338,1355,1367,1383,1399,1415],{"__ignoreMap":714},[718,1304,1305,1307,1309,1312,1314,1316,1318,1320],{"class":720,"line":721},[718,1306,725],{"class":724},[718,1308,729],{"class":728},[718,1310,1311],{"class":732}," createError",[718,1313,736],{"class":728},[718,1315,739],{"class":724},[718,1317,742],{"class":728},[718,1319,531],{"class":745},[718,1321,748],{"class":728},[718,1323,1324],{"class":720,"line":751},[718,1325,755],{"emptyLinePlaceholder":754},[718,1327,1328,1331,1333,1335],{"class":720,"line":758},[718,1329,1330],{"class":724},"throw",[718,1332,1311],{"class":767},[718,1334,770],{"class":732},[718,1336,1337],{"class":728},"{\n",[718,1339,1340,1343,1345,1347,1350,1352],{"class":720,"line":794},[718,1341,1342],{"class":809},"  message",[718,1344,813],{"class":728},[718,1346,742],{"class":728},[718,1348,1349],{"class":745},"Payment failed",[718,1351,773],{"class":728},[718,1353,1354],{"class":728},",\n",[718,1356,1357,1360,1362,1365],{"class":720,"line":981},[718,1358,1359],{"class":809},"  status",[718,1361,813],{"class":728},[718,1363,1364],{"class":844}," 402",[718,1366,1354],{"class":728},[718,1368,1369,1372,1374,1376,1379,1381],{"class":720,"line":1245},[718,1370,1371],{"class":809},"  why",[718,1373,813],{"class":728},[718,1375,742],{"class":728},[718,1377,1378],{"class":745},"Card declined by issuer (insufficient funds)",[718,1380,773],{"class":728},[718,1382,1354],{"class":728},[718,1384,1385,1388,1390,1392,1395,1397],{"class":720,"line":1265},[718,1386,1387],{"class":809},"  fix",[718,1389,813],{"class":728},[718,1391,742],{"class":728},[718,1393,1394],{"class":745},"Try a different payment method or contact your bank",[718,1396,773],{"class":728},[718,1398,1354],{"class":728},[718,1400,1401,1404,1406,1408,1411,1413],{"class":720,"line":1272},[718,1402,1403],{"class":809},"  link",[718,1405,813],{"class":728},[718,1407,742],{"class":728},[718,1409,1410],{"class":745},"https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined",[718,1412,773],{"class":728},[718,1414,1354],{"class":728},[718,1416,1418,1420],{"class":720,"line":1417},9,[718,1419,1275],{"class":728},[718,1421,791],{"class":732},[708,1423,1428],{"className":1424,"code":1425,"filename":1426,"language":1427,"meta":714,"style":714},"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",[534,1429,1430,1434,1451,1471,1484,1504,1522,1539,1544],{"__ignoreMap":714},[718,1431,1432],{"class":720,"line":721},[718,1433,1337],{"class":728},[718,1435,1436,1439,1442,1445,1447,1449],{"class":720,"line":751},[718,1437,1438],{"class":728},"  \"",[718,1440,1441],{"class":892},"statusCode",[718,1443,1444],{"class":728},"\"",[718,1446,813],{"class":728},[718,1448,1364],{"class":844},[718,1450,1354],{"class":728},[718,1452,1453,1455,1458,1460,1462,1465,1467,1469],{"class":720,"line":758},[718,1454,1438],{"class":728},[718,1456,1457],{"class":892},"message",[718,1459,1444],{"class":728},[718,1461,813],{"class":728},[718,1463,1464],{"class":728}," 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