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You can use all three in the same project.",[678,679,41],"h3",{"id":680},"simple-logging",[506,682,683,684,686],{},"Fire-and-forget structured logs. Replace ",[514,685,516],{},", consola, or pino:",[688,689,695],"pre",{"className":690,"code":691,"filename":692,"language":693,"meta":694,"style":694},"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","",[514,696,697,729,736,772],{"__ignoreMap":694},[698,699,702,706,710,714,717,720,723,726],"span",{"class":700,"line":701},"line",1,[698,703,705],{"class":704},"s7zQu","import",[698,707,709],{"class":708},"sMK4o"," {",[698,711,713],{"class":712},"sTEyZ"," log",[698,715,716],{"class":708}," }",[698,718,719],{"class":704}," from",[698,721,722],{"class":708}," '",[698,724,511],{"class":725},"sfazB",[698,727,728],{"class":708},"'\n",[698,730,732],{"class":700,"line":731},2,[698,733,735],{"emptyLinePlaceholder":734},true,"\n",[698,737,739,742,745,748,751,754,757,759,762,764,767,769],{"class":700,"line":738},3,[698,740,741],{"class":712},"log",[698,743,744],{"class":708},".",[698,746,583],{"class":747},"s2Zo4",[698,749,750],{"class":712},"(",[698,752,753],{"class":708},"'",[698,755,756],{"class":725},"auth",[698,758,753],{"class":708},[698,760,761],{"class":708},",",[698,763,722],{"class":708},[698,765,766],{"class":725},"User logged in",[698,768,753],{"class":708},[698,770,771],{"class":712},")\n",[698,773,775,777,779,782,784,787,791,794,796,799,801,803,806,808,810,813,815,817,820,822,826,828],{"class":700,"line":774},4,[698,776,741],{"class":712},[698,778,744],{"class":708},[698,780,781],{"class":747},"error",[698,783,750],{"class":712},[698,785,786],{"class":708},"{",[698,788,790],{"class":789},"swJcz"," action",[698,792,793],{"class":708},":",[698,795,722],{"class":708},[698,797,798],{"class":725},"payment",[698,800,753],{"class":708},[698,802,761],{"class":708},[698,804,805],{"class":789}," error",[698,807,793],{"class":708},[698,809,722],{"class":708},[698,811,812],{"class":725},"card_declined",[698,814,753],{"class":708},[698,816,761],{"class":708},[698,818,819],{"class":789}," userId",[698,821,793],{"class":708},[698,823,825],{"class":824},"sbssI"," 42",[698,827,716],{"class":708},[698,829,771],{"class":712},[678,831,46],{"id":832},"wide-events",[506,834,835],{},"Accumulate context progressively over any operation, then emit a single comprehensive event:",[837,838,839,972,1102],"code-group",{},[688,840,843],{"className":690,"code":841,"filename":842,"language":693,"meta":694,"style":694},"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",[514,844,845,864,868,916,959],{"__ignoreMap":694},[698,846,847,849,851,854,856,858,860,862],{"class":700,"line":701},[698,848,705],{"class":704},[698,850,709],{"class":708},[698,852,853],{"class":712}," createLogger",[698,855,716],{"class":708},[698,857,719],{"class":704},[698,859,722],{"class":708},[698,861,511],{"class":725},[698,863,728],{"class":708},[698,865,866],{"class":700,"line":731},[698,867,735],{"emptyLinePlaceholder":734},[698,869,870,874,877,880,882,884,886,889,891,893,896,898,900,903,905,907,910,912,914],{"class":700,"line":738},[698,871,873],{"class":872},"spNyl","const",[698,875,876],{"class":712}," log ",[698,878,879],{"class":708},"=",[698,881,853],{"class":747},[698,883,750],{"class":712},[698,885,786],{"class":708},[698,887,888],{"class":789}," jobId",[698,890,793],{"class":708},[698,892,722],{"class":708},[698,894,895],{"class":725},"sync-001",[698,897,753],{"class":708},[698,899,761],{"class":708},[698,901,902],{"class":789}," queue",[698,904,793],{"class":708},[698,906,722],{"class":708},[698,908,909],{"class":725},"emails",[698,911,753],{"class":708},[698,913,716],{"class":708},[698,915,771],{"class":712},[698,917,918,920,922,925,927,929,932,934,936,939,941,944,946,949,951,953,955,957],{"class":700,"line":774},[698,919,741],{"class":712},[698,921,744],{"class":708},[698,923,924],{"class":747},"set",[698,926,750],{"class":712},[698,928,786],{"class":708},[698,930,931],{"class":789}," batch",[698,933,793],{"class":708},[698,935,709],{"class":708},[698,937,938],{"class":789}," size",[698,940,793],{"class":708},[698,942,943],{"class":824}," 50",[698,945,761],{"class":708},[698,947,948],{"class":789}," processed",[698,950,793],{"class":708},[698,952,943],{"class":824},[698,954,716],{"class":708},[698,956,716],{"class":708},[698,958,771],{"class":712},[698,960,962,964,966,969],{"class":700,"line":961},5,[698,963,741],{"class":712},[698,965,744],{"class":708},[698,967,968],{"class":747},"emit",[698,970,971],{"class":712},"()\n",[688,973,976],{"className":690,"code":974,"filename":975,"language":693,"meta":694,"style":694},"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",[514,977,978,997,1001,1045,1092],{"__ignoreMap":694},[698,979,980,982,984,987,989,991,993,995],{"class":700,"line":701},[698,981,705],{"class":704},[698,983,709],{"class":708},[698,985,986],{"class":712}," createRequestLogger",[698,988,716],{"class":708},[698,990,719],{"class":704},[698,992,722],{"class":708},[698,994,511],{"class":725},[698,996,728],{"class":708},[698,998,999],{"class":700,"line":731},[698,1000,735],{"emptyLinePlaceholder":734},[698,1002,1003,1005,1007,1009,1011,1013,1015,1018,1020,1022,1025,1027,1029,1032,1034,1036,1039,1041,1043],{"class":700,"line":738},[698,1004,873],{"class":872},[698,1006,876],{"class":712},[698,1008,879],{"class":708},[698,1010,986],{"class":747},[698,1012,750],{"class":712},[698,1014,786],{"class":708},[698,1016,1017],{"class":789}," method",[698,1019,793],{"class":708},[698,1021,722],{"class":708},[698,1023,1024],{"class":725},"POST",[698,1026,753],{"class":708},[698,1028,761],{"class":708},[698,1030,1031],{"class":789}," path",[698,1033,793],{"class":708},[698,1035,722],{"class":708},[698,1037,1038],{"class":725},"\u002Fapi\u002Fcheckout",[698,1040,753],{"class":708},[698,1042,716],{"class":708},[698,1044,771],{"class":712},[698,1046,1047,1049,1051,1053,1055,1057,1060,1062,1064,1067,1069,1072,1074,1077,1079,1081,1084,1086,1088,1090],{"class":700,"line":774},[698,1048,741],{"class":712},[698,1050,744],{"class":708},[698,1052,924],{"class":747},[698,1054,750],{"class":712},[698,1056,786],{"class":708},[698,1058,1059],{"class":789}," user",[698,1061,793],{"class":708},[698,1063,709],{"class":708},[698,1065,1066],{"class":789}," id",[698,1068,793],{"class":708},[698,1070,1071],{"class":824}," 1",[698,1073,761],{"class":708},[698,1075,1076],{"class":789}," plan",[698,1078,793],{"class":708},[698,1080,722],{"class":708},[698,1082,1083],{"class":725},"pro",[698,1085,753],{"class":708},[698,1087,716],{"class":708},[698,1089,716],{"class":708},[698,1091,771],{"class":712},[698,1093,1094,1096,1098,1100],{"class":700,"line":961},[698,1095,741],{"class":712},[698,1097,744],{"class":708},[698,1099,968],{"class":747},[698,1101,971],{"class":712},[688,1103,1106],{"className":690,"code":1104,"filename":1105,"language":693,"meta":694,"style":694},"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",[514,1107,1108,1127,1131,1162,1180,1223,1243,1250],{"__ignoreMap":694},[698,1109,1110,1112,1114,1117,1119,1121,1123,1125],{"class":700,"line":701},[698,1111,705],{"class":704},[698,1113,709],{"class":708},[698,1115,1116],{"class":712}," useLogger",[698,1118,716],{"class":708},[698,1120,719],{"class":704},[698,1122,722],{"class":708},[698,1124,511],{"class":725},[698,1126,728],{"class":708},[698,1128,1129],{"class":700,"line":731},[698,1130,735],{"emptyLinePlaceholder":734},[698,1132,1133,1136,1139,1142,1144,1147,1149,1153,1156,1159],{"class":700,"line":738},[698,1134,1135],{"class":704},"export",[698,1137,1138],{"class":704}," default",[698,1140,1141],{"class":747}," defineEventHandler",[698,1143,750],{"class":712},[698,1145,1146],{"class":872},"async",[698,1148,540],{"class":708},[698,1150,1152],{"class":1151},"sHdIc","event",[698,1154,1155],{"class":708},")",[698,1157,1158],{"class":872}," =>",[698,1160,1161],{"class":708}," {\n",[698,1163,1164,1167,1169,1172,1174,1176,1178],{"class":700,"line":774},[698,1165,1166],{"class":872},"  const",[698,1168,713],{"class":712},[698,1170,1171],{"class":708}," =",[698,1173,1116],{"class":747},[698,1175,750],{"class":789},[698,1177,1152],{"class":712},[698,1179,771],{"class":789},[698,1181,1182,1185,1187,1189,1191,1193,1195,1197,1199,1201,1203,1205,1207,1209,1211,1213,1215,1217,1219,1221],{"class":700,"line":961},[698,1183,1184],{"class":712},"  log",[698,1186,744],{"class":708},[698,1188,924],{"class":747},[698,1190,750],{"class":789},[698,1192,786],{"class":708},[698,1194,1059],{"class":789},[698,1196,793],{"class":708},[698,1198,709],{"class":708},[698,1200,1066],{"class":789},[698,1202,793],{"class":708},[698,1204,1071],{"class":824},[698,1206,761],{"class":708},[698,1208,1076],{"class":789},[698,1210,793],{"class":708},[698,1212,722],{"class":708},[698,1214,1083],{"class":725},[698,1216,753],{"class":708},[698,1218,716],{"class":708},[698,1220,716],{"class":708},[698,1222,771],{"class":789},[698,1224,1226,1229,1231,1234,1236,1240],{"class":700,"line":1225},6,[698,1227,1228],{"class":704},"  return",[698,1230,709],{"class":708},[698,1232,1233],{"class":789}," success",[698,1235,793],{"class":708},[698,1237,1239],{"class":1238},"sfNiH"," true",[698,1241,1242],{"class":708}," }\n",[698,1244,1246],{"class":700,"line":1245},7,[698,1247,1249],{"class":1248},"sHwdD","  \u002F\u002F auto-emitted on response end\n",[698,1251,1253,1256],{"class":700,"line":1252},8,[698,1254,1255],{"class":708},"}",[698,1257,771],{"class":712},[506,1259,1260],{},"One log, all context. Everything you need to understand what happened.",[678,1262,51],{"id":1263},"structured-errors",[506,1265,1266,1267,1269,1270,1272,1273,1275],{},"Errors with actionable context: ",[514,1268,639],{}," it happened, how to ",[514,1271,643],{}," it, and a ",[514,1274,646],{}," to docs:",[837,1277,1278,1402],{},[688,1279,1281],{"className":690,"code":1280,"filename":1105,"language":693,"meta":694,"style":694},"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",[514,1282,1283,1302,1306,1318,1335,1347,1363,1379,1395],{"__ignoreMap":694},[698,1284,1285,1287,1289,1292,1294,1296,1298,1300],{"class":700,"line":701},[698,1286,705],{"class":704},[698,1288,709],{"class":708},[698,1290,1291],{"class":712}," createError",[698,1293,716],{"class":708},[698,1295,719],{"class":704},[698,1297,722],{"class":708},[698,1299,511],{"class":725},[698,1301,728],{"class":708},[698,1303,1304],{"class":700,"line":731},[698,1305,735],{"emptyLinePlaceholder":734},[698,1307,1308,1311,1313,1315],{"class":700,"line":738},[698,1309,1310],{"class":704},"throw",[698,1312,1291],{"class":747},[698,1314,750],{"class":712},[698,1316,1317],{"class":708},"{\n",[698,1319,1320,1323,1325,1327,1330,1332],{"class":700,"line":774},[698,1321,1322],{"class":789},"  message",[698,1324,793],{"class":708},[698,1326,722],{"class":708},[698,1328,1329],{"class":725},"Payment failed",[698,1331,753],{"class":708},[698,1333,1334],{"class":708},",\n",[698,1336,1337,1340,1342,1345],{"class":700,"line":961},[698,1338,1339],{"class":789},"  status",[698,1341,793],{"class":708},[698,1343,1344],{"class":824}," 402",[698,1346,1334],{"class":708},[698,1348,1349,1352,1354,1356,1359,1361],{"class":700,"line":1225},[698,1350,1351],{"class":789},"  why",[698,1353,793],{"class":708},[698,1355,722],{"class":708},[698,1357,1358],{"class":725},"Card declined by issuer (insufficient funds)",[698,1360,753],{"class":708},[698,1362,1334],{"class":708},[698,1364,1365,1368,1370,1372,1375,1377],{"class":700,"line":1245},[698,1366,1367],{"class":789},"  fix",[698,1369,793],{"class":708},[698,1371,722],{"class":708},[698,1373,1374],{"class":725},"Try a different payment method or contact your bank",[698,1376,753],{"class":708},[698,1378,1334],{"class":708},[698,1380,1381,1384,1386,1388,1391,1393],{"class":700,"line":1252},[698,1382,1383],{"class":789},"  link",[698,1385,793],{"class":708},[698,1387,722],{"class":708},[698,1389,1390],{"class":725},"https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined",[698,1392,753],{"class":708},[698,1394,1334],{"class":708},[698,1396,1398,1400],{"class":700,"line":1397},9,[698,1399,1255],{"class":708},[698,1401,771],{"class":712},[688,1403,1408],{"className":1404,"code":1405,"filename":1406,"language":1407,"meta":694,"style":694},"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",[514,1409,1410,1414,1431,1451,1464,1484,1502,1519,1524],{"__ignoreMap":694},[698,1411,1412],{"class":700,"line":701},[698,1413,1317],{"class":708},[698,1415,1416,1419,1422,1425,1427,1429],{"class":700,"line":731},[698,1417,1418],{"class":708},"  \"",[698,1420,1421],{"class":872},"statusCode",[698,1423,1424],{"class":708},"\"",[698,1426,793],{"class":708},[698,1428,1344],{"class":824},[698,1430,1334],{"class":708},[698,1432,1433,1435,1438,1440,1442,1445,1447,1449],{"class":700,"line":738},[698,1434,1418],{"class":708},[698,1436,1437],{"class":872},"message",[698,1439,1424],{"class":708},[698,1441,793],{"class":708},[698,1443,1444],{"class":708}," 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