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LogTape","\u002Fcompare\u002Flogtape","9.compare\u002F3.logtape",{"title":605,"path":606,"stem":607,"icon":577},"evlog vs Winston: formats and request events","\u002Fcompare\u002Fwinston","9.compare\u002F4.winston",{"title":609,"path":610,"stem":611,"icon":577},"evlog vs Consola: reporters and request context","\u002Fcompare\u002Fconsola","9.compare\u002F5.consola",{"id":613,"title":614,"body":615,"description":2574,"extension":2575,"links":2576,"meta":2577,"navigation":2578,"path":301,"seo":2579,"stem":302,"__hash__":2580},"docs\u002F4.integrate\u002Fframeworks\u002F13.standalone.md","Standalone TypeScript",{"type":616,"value":617,"toc":2562},"minimark",[618,631,645,651,694,698,703,774,778,1228,1235,1257,1261,1264,1272,1376,1384,1517,1524,1527,1530,1854,1912,1916,1923,2263,2266,2276,2280,2285,2502,2507,2517,2521,2558],[619,620,621,622,626,627,630],"p",{},"For scripts, CLI tools, queue workers, cron jobs, and any TypeScript process that doesn't use a web framework, evlog provides ",[623,624,625],"code",{},"createLogger"," and ",[623,628,629],{},"createRequestLogger"," from the core package.",[632,633,636,637,640,641,644],"callout",{"color":634,"icon":635},"neutral","i-lucide-globe","For scripts, queue workers, cron, and CLIs, this page is the reference. On Cloudflare Workers, prefer ",[638,639,295],"a",{"href":296}," (",[623,642,643],{},"createWorkersLogger",").",[632,646,647,648,650],{"color":634,"icon":461},"Shipping evlog inside an npm library or SDK instead? ",[638,649,454],{"href":459}," covers what a package may emit and what it leaves to the host application.",[652,653,656,659,681],"prompt",{":actions":654,"description":655,"icon":79},"[\"copy\",\"cursor\",\"claude\"]","Set up evlog in my TypeScript project",[619,657,658],{},"Set up evlog in my TypeScript project for scripts, workers, or CLI tools.",[660,661,662,666,669,672,675,678],"ul",{},[663,664,665],"li",{},"Install evlog: pnpm add evlog",[663,667,668],{},"Import initLogger and createLogger (or createRequestLogger) from 'evlog'",[663,670,671],{},"Call initLogger({ env: { service: 'my-script' } }) once at startup",[663,673,674],{},"Create a logger per logical operation with createLogger({ jobId, source })",[663,676,677],{},"Use log.set() to accumulate context as the operation progresses",[663,679,680],{},"Call log.emit() manually when the operation completes",[619,682,683,684,689,690],{},"Docs: ",[638,685,686],{"href":686,"rel":687},"https:\u002F\u002Fwww.evlog.dev\u002Fintegrate\u002Fframeworks\u002Fstandalone",[688],"nofollow","\nAdapters: ",[638,691,692],{"href":692,"rel":693},"https:\u002F\u002Fwww.evlog.dev\u002Fintegrate\u002Fadapters\u002Foverview",[688],[695,696,25],"h2",{"id":697},"quick-start",[699,700,702],"h3",{"id":701},"_1-install","1. Install",[704,705,706,731,745,759],"code-group",{},[707,708,714],"pre",{"className":709,"code":710,"filename":711,"language":712,"meta":713,"style":713},"language-bash shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","pnpm add evlog\n","pnpm","bash","",[623,715,716],{"__ignoreMap":713},[717,718,721,724,728],"span",{"class":719,"line":720},"line",1,[717,722,711],{"class":723},"sBMFI",[717,725,727],{"class":726},"sfazB"," add",[717,729,730],{"class":726}," evlog\n",[707,732,735],{"className":709,"code":733,"filename":734,"language":712,"meta":713,"style":713},"bun add evlog\n","bun",[623,736,737],{"__ignoreMap":713},[717,738,739,741,743],{"class":719,"line":720},[717,740,734],{"class":723},[717,742,727],{"class":726},[717,744,730],{"class":726},[707,746,749],{"className":709,"code":747,"filename":748,"language":712,"meta":713,"style":713},"yarn add evlog\n","yarn",[623,750,751],{"__ignoreMap":713},[717,752,753,755,757],{"class":719,"line":720},[717,754,748],{"class":723},[717,756,727],{"class":726},[717,758,730],{"class":726},[707,760,763],{"className":709,"code":761,"filename":762,"language":712,"meta":713,"style":713},"npm install evlog\n","npm",[623,764,765],{"__ignoreMap":713},[717,766,767,769,772],{"class":719,"line":720},[717,768,762],{"class":723},[717,770,771],{"class":726}," install",[717,773,730],{"class":726},[699,775,777],{"id":776},"_2-initialize-and-create-loggers","2. Initialize and create loggers",[707,779,784],{"className":780,"code":781,"filename":782,"language":783,"meta":713,"style":713},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import type { DrainContext } from 'evlog'\nimport { initLogger, log, createLogger } from 'evlog'\nimport { createAxiomDrain } from 'evlog\u002Faxiom'\nimport { createDrainPipeline } from 'evlog\u002Fpipeline'\n\nconst pipeline = createDrainPipeline\u003CDrainContext>({ batch: { size: 10 } })\nconst drain = pipeline(createAxiomDrain())\n\ninitLogger({\n  env: { service: 'my-script', environment: 'production' },\n  drain,\n})\n\n\u002F\u002F Every log is automatically drained\nlog.info({ action: 'sync_started' })\n\nconst syncLog = createLogger({ jobId: 'sync-001', source: 'postgres', target: 's3' })\nsyncLog.set({ recordsSynced: 150 })\nsyncLog.emit() \u002F\u002F drained automatically\n\n\u002F\u002F Flush remaining events before exit\nawait drain.flush()\n","scripts\u002Fsync-job.ts","typescript",[623,785,786,818,849,870,891,898,954,975,980,991,1031,1040,1048,1053,1060,1092,1097,1157,1184,1200,1205,1211],{"__ignoreMap":713},[717,787,788,792,795,799,803,806,809,812,815],{"class":719,"line":720},[717,789,791],{"class":790},"s7zQu","import",[717,793,794],{"class":790}," type",[717,796,798],{"class":797},"sMK4o"," {",[717,800,802],{"class":801},"sTEyZ"," DrainContext",[717,804,805],{"class":797}," }",[717,807,808],{"class":790}," from",[717,810,811],{"class":797}," '",[717,813,814],{"class":726},"evlog",[717,816,817],{"class":797},"'\n",[717,819,821,823,825,828,831,834,836,839,841,843,845,847],{"class":719,"line":820},2,[717,822,791],{"class":790},[717,824,798],{"class":797},[717,826,827],{"class":801}," initLogger",[717,829,830],{"class":797},",",[717,832,833],{"class":801}," log",[717,835,830],{"class":797},[717,837,838],{"class":801}," createLogger",[717,840,805],{"class":797},[717,842,808],{"class":790},[717,844,811],{"class":797},[717,846,814],{"class":726},[717,848,817],{"class":797},[717,850,852,854,856,859,861,863,865,868],{"class":719,"line":851},3,[717,853,791],{"class":790},[717,855,798],{"class":797},[717,857,858],{"class":801}," createAxiomDrain",[717,860,805],{"class":797},[717,862,808],{"class":790},[717,864,811],{"class":797},[717,866,867],{"class":726},"evlog\u002Faxiom",[717,869,817],{"class":797},[717,871,873,875,877,880,882,884,886,889],{"class":719,"line":872},4,[717,874,791],{"class":790},[717,876,798],{"class":797},[717,878,879],{"class":801}," createDrainPipeline",[717,881,805],{"class":797},[717,883,808],{"class":790},[717,885,811],{"class":797},[717,887,888],{"class":726},"evlog\u002Fpipeline",[717,890,817],{"class":797},[717,892,894],{"class":719,"line":893},5,[717,895,897],{"emptyLinePlaceholder":896},true,"\n",[717,899,901,905,908,911,914,917,920,923,926,929,933,936,938,941,943,947,949,951],{"class":719,"line":900},6,[717,902,904],{"class":903},"spNyl","const",[717,906,907],{"class":801}," pipeline ",[717,909,910],{"class":797},"=",[717,912,879],{"class":913},"s2Zo4",[717,915,916],{"class":797},"\u003C",[717,918,919],{"class":723},"DrainContext",[717,921,922],{"class":797},">",[717,924,925],{"class":801},"(",[717,927,928],{"class":797},"{",[717,930,932],{"class":931},"swJcz"," batch",[717,934,935],{"class":797},":",[717,937,798],{"class":797},[717,939,940],{"class":931}," size",[717,942,935],{"class":797},[717,944,946],{"class":945},"sbssI"," 10",[717,948,805],{"class":797},[717,950,805],{"class":797},[717,952,953],{"class":801},")\n",[717,955,957,959,962,964,967,969,972],{"class":719,"line":956},7,[717,958,904],{"class":903},[717,960,961],{"class":801}," drain ",[717,963,910],{"class":797},[717,965,966],{"class":913}," pipeline",[717,968,925],{"class":801},[717,970,971],{"class":913},"createAxiomDrain",[717,973,974],{"class":801},"())\n",[717,976,978],{"class":719,"line":977},8,[717,979,897],{"emptyLinePlaceholder":896},[717,981,983,986,988],{"class":719,"line":982},9,[717,984,985],{"class":913},"initLogger",[717,987,925],{"class":801},[717,989,990],{"class":797},"{\n",[717,992,994,997,999,1001,1004,1006,1008,1011,1014,1016,1019,1021,1023,1026,1028],{"class":719,"line":993},10,[717,995,996],{"class":931},"  env",[717,998,935],{"class":797},[717,1000,798],{"class":797},[717,1002,1003],{"class":931}," service",[717,1005,935],{"class":797},[717,1007,811],{"class":797},[717,1009,1010],{"class":726},"my-script",[717,1012,1013],{"class":797},"'",[717,1015,830],{"class":797},[717,1017,1018],{"class":931}," environment",[717,1020,935],{"class":797},[717,1022,811],{"class":797},[717,1024,1025],{"class":726},"production",[717,1027,1013],{"class":797},[717,1029,1030],{"class":797}," },\n",[717,1032,1034,1037],{"class":719,"line":1033},11,[717,1035,1036],{"class":801},"  drain",[717,1038,1039],{"class":797},",\n",[717,1041,1043,1046],{"class":719,"line":1042},12,[717,1044,1045],{"class":797},"}",[717,1047,953],{"class":801},[717,1049,1051],{"class":719,"line":1050},13,[717,1052,897],{"emptyLinePlaceholder":896},[717,1054,1056],{"class":719,"line":1055},14,[717,1057,1059],{"class":1058},"sHwdD","\u002F\u002F Every log is automatically drained\n",[717,1061,1063,1066,1069,1072,1074,1076,1079,1081,1083,1086,1088,1090],{"class":719,"line":1062},15,[717,1064,1065],{"class":801},"log",[717,1067,1068],{"class":797},".",[717,1070,1071],{"class":913},"info",[717,1073,925],{"class":801},[717,1075,928],{"class":797},[717,1077,1078],{"class":931}," action",[717,1080,935],{"class":797},[717,1082,811],{"class":797},[717,1084,1085],{"class":726},"sync_started",[717,1087,1013],{"class":797},[717,1089,805],{"class":797},[717,1091,953],{"class":801},[717,1093,1095],{"class":719,"line":1094},16,[717,1096,897],{"emptyLinePlaceholder":896},[717,1098,1100,1102,1105,1107,1109,1111,1113,1116,1118,1120,1123,1125,1127,1130,1132,1134,1137,1139,1141,1144,1146,1148,1151,1153,1155],{"class":719,"line":1099},17,[717,1101,904],{"class":903},[717,1103,1104],{"class":801}," syncLog ",[717,1106,910],{"class":797},[717,1108,838],{"class":913},[717,1110,925],{"class":801},[717,1112,928],{"class":797},[717,1114,1115],{"class":931}," jobId",[717,1117,935],{"class":797},[717,1119,811],{"class":797},[717,1121,1122],{"class":726},"sync-001",[717,1124,1013],{"class":797},[717,1126,830],{"class":797},[717,1128,1129],{"class":931}," source",[717,1131,935],{"class":797},[717,1133,811],{"class":797},[717,1135,1136],{"class":726},"postgres",[717,1138,1013],{"class":797},[717,1140,830],{"class":797},[717,1142,1143],{"class":931}," target",[717,1145,935],{"class":797},[717,1147,811],{"class":797},[717,1149,1150],{"class":726},"s3",[717,1152,1013],{"class":797},[717,1154,805],{"class":797},[717,1156,953],{"class":801},[717,1158,1160,1163,1165,1168,1170,1172,1175,1177,1180,1182],{"class":719,"line":1159},18,[717,1161,1162],{"class":801},"syncLog",[717,1164,1068],{"class":797},[717,1166,1167],{"class":913},"set",[717,1169,925],{"class":801},[717,1171,928],{"class":797},[717,1173,1174],{"class":931}," recordsSynced",[717,1176,935],{"class":797},[717,1178,1179],{"class":945}," 150",[717,1181,805],{"class":797},[717,1183,953],{"class":801},[717,1185,1187,1189,1191,1194,1197],{"class":719,"line":1186},19,[717,1188,1162],{"class":801},[717,1190,1068],{"class":797},[717,1192,1193],{"class":913},"emit",[717,1195,1196],{"class":801},"() ",[717,1198,1199],{"class":1058},"\u002F\u002F drained automatically\n",[717,1201,1203],{"class":719,"line":1202},20,[717,1204,897],{"emptyLinePlaceholder":896},[717,1206,1208],{"class":719,"line":1207},21,[717,1209,1210],{"class":1058},"\u002F\u002F Flush remaining events before exit\n",[717,1212,1214,1217,1220,1222,1225],{"class":719,"line":1213},22,[717,1215,1216],{"class":790},"await",[717,1218,1219],{"class":801}," drain",[717,1221,1068],{"class":797},[717,1223,1224],{"class":913},"flush",[717,1226,1227],{"class":801},"()\n",[632,1229,1230,1231,1234],{"color":1071,"icon":13},"Always call ",[623,1232,1233],{},"drain.flush()"," before the process exits to ensure all buffered events are sent.",[632,1236,1237,1241,1242,1248,1249,1252,1253,1256],{"color":1071,"icon":568},[1238,1239,1240],"strong",{},"Using vite-node?"," The ",[638,1243,1244,1247],{"href":566},[623,1245,1246],{},"evlog\u002Fvite"," plugin"," replaces the ",[623,1250,1251],{},"initLogger()"," call with compile-time auto-initialization, strips ",[623,1254,1255],{},"log.debug()"," from production builds, and injects source locations.",[695,1258,1260],{"id":1259},"createlogger-vs-createrequestlogger","createLogger vs createRequestLogger",[619,1262,1263],{},"evlog provides two manual logger constructors:",[619,1265,1266,1271],{},[1238,1267,1268],{},[623,1269,1270],{},"createLogger(context)"," - For non-HTTP contexts (scripts, CLI, queues):",[707,1273,1276],{"className":780,"code":1274,"filename":1275,"language":783,"meta":713,"style":713},"import { createLogger } from 'evlog'\n\nconst log = createLogger({ jobId: 'migrate-001', source: 'postgres' })\nlog.set({ recordsProcessed: 500 })\nlog.emit()\n","scripts\u002Fjob.ts",[623,1277,1278,1296,1300,1342,1366],{"__ignoreMap":713},[717,1279,1280,1282,1284,1286,1288,1290,1292,1294],{"class":719,"line":720},[717,1281,791],{"class":790},[717,1283,798],{"class":797},[717,1285,838],{"class":801},[717,1287,805],{"class":797},[717,1289,808],{"class":790},[717,1291,811],{"class":797},[717,1293,814],{"class":726},[717,1295,817],{"class":797},[717,1297,1298],{"class":719,"line":820},[717,1299,897],{"emptyLinePlaceholder":896},[717,1301,1302,1304,1307,1309,1311,1313,1315,1317,1319,1321,1324,1326,1328,1330,1332,1334,1336,1338,1340],{"class":719,"line":851},[717,1303,904],{"class":903},[717,1305,1306],{"class":801}," log ",[717,1308,910],{"class":797},[717,1310,838],{"class":913},[717,1312,925],{"class":801},[717,1314,928],{"class":797},[717,1316,1115],{"class":931},[717,1318,935],{"class":797},[717,1320,811],{"class":797},[717,1322,1323],{"class":726},"migrate-001",[717,1325,1013],{"class":797},[717,1327,830],{"class":797},[717,1329,1129],{"class":931},[717,1331,935],{"class":797},[717,1333,811],{"class":797},[717,1335,1136],{"class":726},[717,1337,1013],{"class":797},[717,1339,805],{"class":797},[717,1341,953],{"class":801},[717,1343,1344,1346,1348,1350,1352,1354,1357,1359,1362,1364],{"class":719,"line":872},[717,1345,1065],{"class":801},[717,1347,1068],{"class":797},[717,1349,1167],{"class":913},[717,1351,925],{"class":801},[717,1353,928],{"class":797},[717,1355,1356],{"class":931}," recordsProcessed",[717,1358,935],{"class":797},[717,1360,1361],{"class":945}," 500",[717,1363,805],{"class":797},[717,1365,953],{"class":801},[717,1367,1368,1370,1372,1374],{"class":719,"line":893},[717,1369,1065],{"class":801},[717,1371,1068],{"class":797},[717,1373,1193],{"class":913},[717,1375,1227],{"class":801},[619,1377,1378,1383],{},[1238,1379,1380],{},[623,1381,1382],{},"createRequestLogger(requestMeta)"," - For HTTP-like contexts where you want method\u002Fpath\u002Fstatus tracking:",[707,1385,1388],{"className":780,"code":1386,"filename":1387,"language":783,"meta":713,"style":713},"import { createRequestLogger } from 'evlog'\n\nconst log = createRequestLogger({\n  method: 'POST',\n  path: '\u002Fwebhook\u002Fstripe',\n})\nlog.set({ event: 'invoice.paid', customerId: 'cus_123' })\nlog.emit()\n","scripts\u002Fwebhook-handler.ts",[623,1389,1390,1409,1413,1427,1443,1459,1465,1507],{"__ignoreMap":713},[717,1391,1392,1394,1396,1399,1401,1403,1405,1407],{"class":719,"line":720},[717,1393,791],{"class":790},[717,1395,798],{"class":797},[717,1397,1398],{"class":801}," createRequestLogger",[717,1400,805],{"class":797},[717,1402,808],{"class":790},[717,1404,811],{"class":797},[717,1406,814],{"class":726},[717,1408,817],{"class":797},[717,1410,1411],{"class":719,"line":820},[717,1412,897],{"emptyLinePlaceholder":896},[717,1414,1415,1417,1419,1421,1423,1425],{"class":719,"line":851},[717,1416,904],{"class":903},[717,1418,1306],{"class":801},[717,1420,910],{"class":797},[717,1422,1398],{"class":913},[717,1424,925],{"class":801},[717,1426,990],{"class":797},[717,1428,1429,1432,1434,1436,1439,1441],{"class":719,"line":872},[717,1430,1431],{"class":931},"  method",[717,1433,935],{"class":797},[717,1435,811],{"class":797},[717,1437,1438],{"class":726},"POST",[717,1440,1013],{"class":797},[717,1442,1039],{"class":797},[717,1444,1445,1448,1450,1452,1455,1457],{"class":719,"line":893},[717,1446,1447],{"class":931},"  path",[717,1449,935],{"class":797},[717,1451,811],{"class":797},[717,1453,1454],{"class":726},"\u002Fwebhook\u002Fstripe",[717,1456,1013],{"class":797},[717,1458,1039],{"class":797},[717,1460,1461,1463],{"class":719,"line":900},[717,1462,1045],{"class":797},[717,1464,953],{"class":801},[717,1466,1467,1469,1471,1473,1475,1477,1480,1482,1484,1487,1489,1491,1494,1496,1498,1501,1503,1505],{"class":719,"line":956},[717,1468,1065],{"class":801},[717,1470,1068],{"class":797},[717,1472,1167],{"class":913},[717,1474,925],{"class":801},[717,1476,928],{"class":797},[717,1478,1479],{"class":931}," event",[717,1481,935],{"class":797},[717,1483,811],{"class":797},[717,1485,1486],{"class":726},"invoice.paid",[717,1488,1013],{"class":797},[717,1490,830],{"class":797},[717,1492,1493],{"class":931}," customerId",[717,1495,935],{"class":797},[717,1497,811],{"class":797},[717,1499,1500],{"class":726},"cus_123",[717,1502,1013],{"class":797},[717,1504,805],{"class":797},[717,1506,953],{"class":801},[717,1508,1509,1511,1513,1515],{"class":719,"line":977},[717,1510,1065],{"class":801},[717,1512,1068],{"class":797},[717,1514,1193],{"class":913},[717,1516,1227],{"class":801},[619,1518,1519,1520,1523],{},"Both require manual ",[623,1521,1522],{},"log.emit()"," calls since there is no automatic lifecycle to hook into.",[695,1525,51],{"id":1526},"wide-events",[619,1528,1529],{},"Build up context progressively, then emit:",[707,1531,1534],{"className":780,"code":1532,"filename":1533,"language":783,"meta":713,"style":713},"import { initLogger, createLogger } from 'evlog'\n\ninitLogger({\n  env: { service: 'migrate' },\n})\n\nconst log = createLogger({ task: 'user-migration' })\n\nconst users = await db.query('SELECT * FROM legacy_users')\nlog.set({ found: users.length })\n\nlet migrated = 0\nfor (const user of users) {\n  await newDb.upsert({ id: user.id, email: user.email, plan: user.plan })\n  migrated++\n}\n\nlog.set({ migrated, status: 'complete' })\nlog.emit()\n","scripts\u002Fmigrate-users.ts",[623,1535,1536,1558,1562,1570,1591,1597,1601,1631,1635,1666,1695,1699,1712,1732,1794,1802,1807,1811,1844],{"__ignoreMap":713},[717,1537,1538,1540,1542,1544,1546,1548,1550,1552,1554,1556],{"class":719,"line":720},[717,1539,791],{"class":790},[717,1541,798],{"class":797},[717,1543,827],{"class":801},[717,1545,830],{"class":797},[717,1547,838],{"class":801},[717,1549,805],{"class":797},[717,1551,808],{"class":790},[717,1553,811],{"class":797},[717,1555,814],{"class":726},[717,1557,817],{"class":797},[717,1559,1560],{"class":719,"line":820},[717,1561,897],{"emptyLinePlaceholder":896},[717,1563,1564,1566,1568],{"class":719,"line":851},[717,1565,985],{"class":913},[717,1567,925],{"class":801},[717,1569,990],{"class":797},[717,1571,1572,1574,1576,1578,1580,1582,1584,1587,1589],{"class":719,"line":872},[717,1573,996],{"class":931},[717,1575,935],{"class":797},[717,1577,798],{"class":797},[717,1579,1003],{"class":931},[717,1581,935],{"class":797},[717,1583,811],{"class":797},[717,1585,1586],{"class":726},"migrate",[717,1588,1013],{"class":797},[717,1590,1030],{"class":797},[717,1592,1593,1595],{"class":719,"line":893},[717,1594,1045],{"class":797},[717,1596,953],{"class":801},[717,1598,1599],{"class":719,"line":900},[717,1600,897],{"emptyLinePlaceholder":896},[717,1602,1603,1605,1607,1609,1611,1613,1615,1618,1620,1622,1625,1627,1629],{"class":719,"line":956},[717,1604,904],{"class":903},[717,1606,1306],{"class":801},[717,1608,910],{"class":797},[717,1610,838],{"class":913},[717,1612,925],{"class":801},[717,1614,928],{"class":797},[717,1616,1617],{"class":931}," task",[717,1619,935],{"class":797},[717,1621,811],{"class":797},[717,1623,1624],{"class":726},"user-migration",[717,1626,1013],{"class":797},[717,1628,805],{"class":797},[717,1630,953],{"class":801},[717,1632,1633],{"class":719,"line":977},[717,1634,897],{"emptyLinePlaceholder":896},[717,1636,1637,1639,1642,1644,1647,1650,1652,1655,1657,1659,1662,1664],{"class":719,"line":982},[717,1638,904],{"class":903},[717,1640,1641],{"class":801}," users ",[717,1643,910],{"class":797},[717,1645,1646],{"class":790}," await",[717,1648,1649],{"class":801}," db",[717,1651,1068],{"class":797},[717,1653,1654],{"class":913},"query",[717,1656,925],{"class":801},[717,1658,1013],{"class":797},[717,1660,1661],{"class":726},"SELECT * FROM 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0\n",[717,1713,1714,1717,1719,1721,1724,1727,1730],{"class":719,"line":1050},[717,1715,1716],{"class":790},"for",[717,1718,640],{"class":801},[717,1720,904],{"class":903},[717,1722,1723],{"class":801}," user ",[717,1725,1726],{"class":797},"of",[717,1728,1729],{"class":801}," users) ",[717,1731,990],{"class":797},[717,1733,1734,1737,1740,1742,1745,1747,1749,1752,1754,1757,1759,1762,1764,1767,1769,1771,1773,1776,1778,1781,1783,1785,1787,1790,1792],{"class":719,"line":1055},[717,1735,1736],{"class":790},"  await",[717,1738,1739],{"class":801}," newDb",[717,1741,1068],{"class":797},[717,1743,1744],{"class":913},"upsert",[717,1746,925],{"class":931},[717,1748,928],{"class":797},[717,1750,1751],{"class":931}," id",[717,1753,935],{"class":797},[717,1755,1756],{"class":801}," user",[717,1758,1068],{"class":797},[717,1760,1761],{"class":801},"id",[717,1763,830],{"class":797},[717,1765,1766],{"class":931}," email",[717,1768,935],{"class":797},[717,1770,1756],{"class":801},[717,1772,1068],{"class":797},[717,1774,1775],{"class":801},"email",[717,1777,830],{"class":797},[717,1779,1780],{"class":931}," plan",[717,1782,935],{"class":797},[717,1784,1756],{"class":801},[717,1786,1068],{"class":797},[717,1788,1789],{"class":801},"plan",[717,1791,805],{"class":797},[717,1793,953],{"class":931},[717,1795,1796,1799],{"class":719,"line":1062},[717,1797,1798],{"class":801},"  migrated",[717,1800,1801],{"class":797},"++\n",[717,1803,1804],{"class":719,"line":1094},[717,1805,1806],{"class":797},"}\n",[717,1808,1809],{"class":719,"line":1099},[717,1810,897],{"emptyLinePlaceholder":896},[717,1812,1813,1815,1817,1819,1821,1823,1826,1828,1831,1833,1835,1838,1840,1842],{"class":719,"line":1159},[717,1814,1065],{"class":801},[717,1816,1068],{"class":797},[717,1818,1167],{"class":913},[717,1820,925],{"class":801},[717,1822,928],{"class":797},[717,1824,1825],{"class":801}," migrated",[717,1827,830],{"class":797},[717,1829,1830],{"class":931}," status",[717,1832,935],{"class":797},[717,1834,811],{"class":797},[717,1836,1837],{"class":726},"complete",[717,1839,1013],{"class":797},[717,1841,805],{"class":797},[717,1843,953],{"class":801},[717,1845,1846,1848,1850,1852],{"class":719,"line":1186},[717,1847,1065],{"class":801},[717,1849,1068],{"class":797},[717,1851,1193],{"class":913},[717,1853,1227],{"class":801},[707,1855,1858],{"className":709,"code":1856,"filename":1857,"language":712,"meta":713,"style":713},"14:58:15 INFO [migrate] user-migration\n  ├─ migrated: 1250\n  ├─ found: 1250\n  ├─ status: complete\n  └─ task: user-migration\n","Terminal output",[623,1859,1860,1871,1882,1891,1901],{"__ignoreMap":713},[717,1861,1862,1865,1868],{"class":719,"line":720},[717,1863,1864],{"class":723},"14:58:15",[717,1866,1867],{"class":726}," INFO",[717,1869,1870],{"class":801}," [migrate] user-migration\n",[717,1872,1873,1876,1879],{"class":719,"line":820},[717,1874,1875],{"class":723},"  ├─",[717,1877,1878],{"class":726}," migrated:",[717,1880,1881],{"class":945}," 1250\n",[717,1883,1884,1886,1889],{"class":719,"line":851},[717,1885,1875],{"class":723},[717,1887,1888],{"class":726}," found:",[717,1890,1881],{"class":945},[717,1892,1893,1895,1898],{"class":719,"line":872},[717,1894,1875],{"class":723},[717,1896,1897],{"class":726}," status:",[717,1899,1900],{"class":726}," complete\n",[717,1902,1903,1906,1909],{"class":719,"line":893},[717,1904,1905],{"class":723},"  └─",[717,1907,1908],{"class":726}," task:",[717,1910,1911],{"class":726}," user-migration\n",[695,1913,1915],{"id":1914},"error-handling","Error Handling",[619,1917,1918,1919,1922],{},"Use ",[623,1920,1921],{},"createError"," for structured errors:",[707,1924,1926],{"className":780,"code":1925,"filename":782,"language":783,"meta":713,"style":713},"import { createError, parseError } from 'evlog'\n\ntry {\n  const result = await externalApi.sync()\n  if (!result.ok) {\n    throw createError({\n      message: 'Sync failed',\n      why: `API returned ${result.status}`,\n      fix: 'Check the API status page and retry',\n    })\n  }\n} catch (error) {\n  log.error(error instanceof Error ? error : new Error(String(error)))\n  log.emit()\n\n  const { message, why, fix } = parseError(error)\n  console.error(`${message}\\nWhy: ${why}\\nFix: ${fix}`)\n  process.exit(1)\n}\n",[623,1927,1928,1952,1956,1964,1987,2010,2021,2037,2065,2081,2088,2093,2105,2151,2161,2165,2196,2242,2259],{"__ignoreMap":713},[717,1929,1930,1932,1934,1937,1939,1942,1944,1946,1948,1950],{"class":719,"line":720},[717,1931,791],{"class":790},[717,1933,798],{"class":797},[717,1935,1936],{"class":801}," createError",[717,1938,830],{"class":797},[717,1940,1941],{"class":801}," 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if",[717,1993,640],{"class":931},[717,1995,1996],{"class":797},"!",[717,1998,1999],{"class":801},"result",[717,2001,1068],{"class":797},[717,2003,2004],{"class":801},"ok",[717,2006,2007],{"class":931},") ",[717,2009,990],{"class":797},[717,2011,2012,2015,2017,2019],{"class":719,"line":900},[717,2013,2014],{"class":790},"    throw",[717,2016,1936],{"class":913},[717,2018,925],{"class":931},[717,2020,990],{"class":797},[717,2022,2023,2026,2028,2030,2033,2035],{"class":719,"line":956},[717,2024,2025],{"class":931},"      message",[717,2027,935],{"class":797},[717,2029,811],{"class":797},[717,2031,2032],{"class":726},"Sync failed",[717,2034,1013],{"class":797},[717,2036,1039],{"class":797},[717,2038,2039,2042,2044,2047,2050,2053,2055,2057,2060,2063],{"class":719,"line":977},[717,2040,2041],{"class":931},"      why",[717,2043,935],{"class":797},[717,2045,2046],{"class":797}," `",[717,2048,2049],{"class":726},"API returned ",[717,2051,2052],{"class":797},"${",[717,2054,1999],{"class":801},[717,2056,1068],{"class":797},[717,2058,2059],{"class":801},"status",[717,2061,2062],{"class":797},"}`",[717,2064,1039],{"class":797},[717,2066,2067,2070,2072,2074,2077,2079],{"class":719,"line":982},[717,2068,2069],{"class":931},"      fix",[717,2071,935],{"class":797},[717,2073,811],{"class":797},[717,2075,2076],{"class":726},"Check the API status page and retry",[717,2078,1013],{"class":797},[717,2080,1039],{"class":797},[717,2082,2083,2086],{"class":719,"line":993},[717,2084,2085],{"class":797},"    }",[717,2087,953],{"class":931},[717,2089,2090],{"class":719,"line":1033},[717,2091,2092],{"class":797},"  }\n",[717,2094,2095,2097,2100,2103],{"class":719,"line":1042},[717,2096,1045],{"class":797},[717,2098,2099],{"class":790}," catch",[717,2101,2102],{"class":801}," (error) ",[717,2104,990],{"class":797},[717,2106,2107,2110,2112,2115,2117,2119,2122,2125,2128,2131,2134,2137,2139,2141,2144,2146,2148],{"class":719,"line":1050},[717,2108,2109],{"class":801},"  log",[717,2111,1068],{"class":797},[717,2113,2114],{"class":913},"error",[717,2116,925],{"class":931},[717,2118,2114],{"class":801},[717,2120,2121],{"class":797}," instanceof",[717,2123,2124],{"class":723}," Error",[717,2126,2127],{"class":797}," ?",[717,2129,2130],{"class":801}," error",[717,2132,2133],{"class":797}," :",[717,2135,2136],{"class":797}," new",[717,2138,2124],{"class":913},[717,2140,925],{"class":931},[717,2142,2143],{"class":913},"String",[717,2145,925],{"class":931},[717,2147,2114],{"class":801},[717,2149,2150],{"class":931},")))\n",[717,2152,2153,2155,2157,2159],{"class":719,"line":1055},[717,2154,2109],{"class":801},[717,2156,1068],{"class":797},[717,2158,1193],{"class":913},[717,2160,1227],{"class":931},[717,2162,2163],{"class":719,"line":1062},[717,2164,897],{"emptyLinePlaceholder":896},[717,2166,2167,2169,2171,2174,2176,2179,2181,2184,2186,2188,2190,2192,2194],{"class":719,"line":1094},[717,2168,1968],{"class":903},[717,2170,798],{"class":797},[717,2172,2173],{"class":801}," message",[717,2175,830],{"class":797},[717,2177,2178],{"class":801}," why",[717,2180,830],{"class":797},[717,2182,2183],{"class":801}," fix",[717,2185,805],{"class":797},[717,2187,1974],{"class":797},[717,2189,1941],{"class":913},[717,2191,925],{"class":931},[717,2193,2114],{"class":801},[717,2195,953],{"class":931},[717,2197,2198,2201,2203,2205,2207,2210,2213,2215,2218,2221,2223,2226,2228,2230,2233,2235,2238,2240],{"class":719,"line":1099},[717,2199,2200],{"class":801},"  console",[717,2202,1068],{"class":797},[717,2204,2114],{"class":913},[717,2206,925],{"class":931},[717,2208,2209],{"class":797},"`${",[717,2211,2212],{"class":801},"message",[717,2214,1045],{"class":797},[717,2216,2217],{"class":801},"\\n",[717,2219,2220],{"class":726},"Why: ",[717,2222,2052],{"class":797},[717,2224,2225],{"class":801},"why",[717,2227,1045],{"class":797},[717,2229,2217],{"class":801},[717,2231,2232],{"class":726},"Fix: 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'evlog'\nimport { initLogger } from 'evlog'\nimport { createAxiomDrain } from 'evlog\u002Faxiom'\nimport { createDrainPipeline } from 'evlog\u002Fpipeline'\n\nconst pipeline = createDrainPipeline\u003CDrainContext>({\n  batch: { size: 50, intervalMs: 5000 },\n  retry: { maxAttempts: 3 },\n})\nconst drain = pipeline(createAxiomDrain())\n\ninitLogger({\n  env: { service: 'my-script' },\n  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docs for all available drain adapters (Axiom, OTLP, PostHog, Sentry, Better Stack).",[632,2508,2510,2511,2516],{"color":634,"icon":2509},"i-lucide-arrow-right","See the full ",[638,2512,2515],{"href":2513,"rel":2514},"https:\u002F\u002Fgithub.com\u002Fevloghq\u002Fevlog\u002Ftree\u002Fmain\u002Fexamples\u002Fbun-script",[688],"bun-script example"," for a complete working script.",[695,2518,2520],{"id":2519},"next-steps","Next Steps",[660,2522,2523,2528,2533,2538,2543],{},[663,2524,2525,2527],{},[638,2526,450],{"href":451},": apply these primitives in a complete HTTP server and trace success and failure from the response to the log.",[663,2529,2530,2532],{},[638,2531,51],{"href":52},": Design comprehensive events with context layering",[663,2534,2535,2537],{},[638,2536,148],{"href":153},": Send logs to Axiom, Sentry, PostHog, and more",[663,2539,2540,2542],{},[638,2541,66],{"href":67},": Control log volume with head and tail 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