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This enables:",[540,541,542,555,565],"ul",{},[543,544,545,549,550,554],"li",{},[546,547,548],"strong",{},"AI agent integration"," - point a skill to ",[551,552,553],"code",{},".evlog\u002Flogs\u002F"," to parse structured logs for debugging and pattern analysis",[543,556,557,560,561,564],{},[546,558,559],{},"Local dev debugging"," - persistent log history without scrolling the terminal (",[551,562,563],{},"tail -f .evlog\u002Flogs\u002F2026-03-14.jsonl",")",[543,566,567,570],{},[546,568,569],{},"Production backup"," - combine with a network drain (Axiom, OTLP) for local fallback",[572,573,576,579,603],"prompt",{":actions":574,"description":575,"icon":209},"[\"copy\",\"cursor\",\"claude\"]","Add the file system drain adapter",[536,577,578],{},"Add the file system drain adapter to write evlog wide events locally as NDJSON files.",[580,581,582,585,588,591,594,597,600],"ol",{},[543,583,584],{},"Identify which framework I'm using and follow its evlog integration pattern",[543,586,587],{},"Install evlog if not already installed",[543,589,590],{},"Import createFsDrain from 'evlog\u002Ffs'",[543,592,593],{},"Wire createFsDrain() into my framework's drain configuration",[543,595,596],{},"Logs are written to .evlog\u002Flogs\u002F by default (one file per day, auto .gitignore)",[543,598,599],{},"Optionally configure dir, maxFiles, maxSizePerFile, or pretty options",[543,601,602],{},"Test by triggering a request and checking .evlog\u002Flogs\u002F*.jsonl",[536,604,605,606,612,613],{},"Adapter docs: ",[607,608,609],"a",{"href":609,"rel":610},"https:\u002F\u002Fwww.evlog.dev\u002Fintegrate\u002Fadapters\u002Fself-hosted\u002Ffs",[611],"nofollow","\nFramework setup: ",[607,614,615],{"href":615,"rel":616},"https:\u002F\u002Fwww.evlog.dev\u002Fintegrate\u002Fframeworks\u002Foverview",[611],[618,619,20],"h2",{"id":620},"installation",[536,622,623],{},"The File System adapter comes bundled with evlog:",[625,626,632],"pre",{"className":627,"code":628,"filename":629,"language":630,"meta":631,"style":631},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { createFsDrain } from 'evlog\u002Ffs'\n","src\u002Findex.ts","typescript","",[551,633,634],{"__ignoreMap":631},[635,636,639,643,647,651,654,657,660,664],"span",{"class":637,"line":638},"line",1,[635,640,642],{"class":641},"s7zQu","import",[635,644,646],{"class":645},"sMK4o"," {",[635,648,650],{"class":649},"sTEyZ"," createFsDrain",[635,652,653],{"class":645}," }",[635,655,656],{"class":641}," from",[635,658,659],{"class":645}," '",[635,661,663],{"class":662},"sfazB","evlog\u002Ffs",[635,665,666],{"class":645},"'\n",[618,668,25],{"id":669},"quick-start",[536,671,672],{},"No credentials or environment variables needed. Just wire the drain to your framework:",[674,675,676,790,921,938,1000,1054,1113,1167,1220],"code-group",{},[625,677,680],{"className":627,"code":678,"filename":679,"language":630,"meta":631,"style":631},"\u002F\u002F server\u002Fplugins\u002Fevlog-drain.ts\nimport { createFsDrain } from 'evlog\u002Ffs'\n\nexport default defineNitroPlugin((nitroApp) => {\n  nitroApp.hooks.hook('evlog:drain', createFsDrain())\n})\n","Nuxt \u002F Nitro",[551,681,682,688,707,714,745,781],{"__ignoreMap":631},[635,683,684],{"class":637,"line":638},[635,685,687],{"class":686},"sHwdD","\u002F\u002F server\u002Fplugins\u002Fevlog-drain.ts\n",[635,689,691,693,695,697,699,701,703,705],{"class":637,"line":690},2,[635,692,642],{"class":641},[635,694,646],{"class":645},[635,696,650],{"class":649},[635,698,653],{"class":645},[635,700,656],{"class":641},[635,702,659],{"class":645},[635,704,663],{"class":662},[635,706,666],{"class":645},[635,708,710],{"class":637,"line":709},3,[635,711,713],{"emptyLinePlaceholder":712},true,"\n",[635,715,717,720,723,727,730,732,736,738,742],{"class":637,"line":716},4,[635,718,719],{"class":641},"export",[635,721,722],{"class":641}," default",[635,724,726],{"class":725},"s2Zo4"," defineNitroPlugin",[635,728,729],{"class":649},"(",[635,731,729],{"class":645},[635,733,735],{"class":734},"sHdIc","nitroApp",[635,737,564],{"class":645},[635,739,741],{"class":740},"spNyl"," =>",[635,743,744],{"class":645}," {\n",[635,746,748,751,754,757,759,762,765,768,771,773,776,778],{"class":637,"line":747},5,[635,749,750],{"class":649},"  nitroApp",[635,752,753],{"class":645},".",[635,755,756],{"class":649},"hooks",[635,758,753],{"class":645},[635,760,761],{"class":725},"hook",[635,763,729],{"class":764},"swJcz",[635,766,767],{"class":645},"'",[635,769,770],{"class":662},"evlog:drain",[635,772,767],{"class":645},[635,774,775],{"class":645},",",[635,777,650],{"class":725},[635,779,780],{"class":764},"())\n",[635,782,784,787],{"class":637,"line":783},6,[635,785,786],{"class":645},"}",[635,788,789],{"class":649},")\n",[625,791,793],{"className":627,"code":792,"filename":235,"language":630,"meta":631,"style":631},"\u002F\u002F lib\u002Fevlog.ts — Node.js routes only; keep evlog\u002Ffs out of root instrumentation.ts\nimport { createEvlog } from 'evlog\u002Fnext'\nimport { createFsDrain } from 'evlog\u002Ffs'\n\nexport const { withEvlog, useLogger, log, createError } = createEvlog({\n  service: 'my-app',\n  drain: createFsDrain(),\n})\n",[551,794,795,800,820,838,842,881,899,914],{"__ignoreMap":631},[635,796,797],{"class":637,"line":638},[635,798,799],{"class":686},"\u002F\u002F lib\u002Fevlog.ts — Node.js routes only; keep evlog\u002Ffs out of root instrumentation.ts\n",[635,801,802,804,806,809,811,813,815,818],{"class":637,"line":690},[635,803,642],{"class":641},[635,805,646],{"class":645},[635,807,808],{"class":649}," createEvlog",[635,810,653],{"class":645},[635,812,656],{"class":641},[635,814,659],{"class":645},[635,816,817],{"class":662},"evlog\u002Fnext",[635,819,666],{"class":645},[635,821,822,824,826,828,830,832,834,836],{"class":637,"line":709},[635,823,642],{"class":641},[635,825,646],{"class":645},[635,827,650],{"class":649},[635,829,653],{"class":645},[635,831,656],{"class":641},[635,833,659],{"class":645},[635,835,663],{"class":662},[635,837,666],{"class":645},[635,839,840],{"class":637,"line":716},[635,841,713],{"emptyLinePlaceholder":712},[635,843,844,846,849,851,854,856,859,861,864,866,869,871,874,876,878],{"class":637,"line":747},[635,845,719],{"class":641},[635,847,848],{"class":740}," const",[635,850,646],{"class":645},[635,852,853],{"class":649}," withEvlog",[635,855,775],{"class":645},[635,857,858],{"class":649}," useLogger",[635,860,775],{"class":645},[635,862,863],{"class":649}," log",[635,865,775],{"class":645},[635,867,868],{"class":649}," createError ",[635,870,786],{"class":645},[635,872,873],{"class":645}," =",[635,875,808],{"class":725},[635,877,729],{"class":649},[635,879,880],{"class":645},"{\n",[635,882,883,886,889,891,894,896],{"class":637,"line":783},[635,884,885],{"class":764},"  service",[635,887,888],{"class":645},":",[635,890,659],{"class":645},[635,892,893],{"class":662},"my-app",[635,895,767],{"class":645},[635,897,898],{"class":645},",\n",[635,900,902,905,907,909,912],{"class":637,"line":901},7,[635,903,904],{"class":764},"  drain",[635,906,888],{"class":645},[635,908,650],{"class":725},[635,910,911],{"class":649},"()",[635,913,898],{"class":645},[635,915,917,919],{"class":637,"line":916},8,[635,918,786],{"class":645},[635,920,789],{"class":649},[922,923,925,926,929,930,933,934,937],"callout",{"color":924,"icon":13},"info","The FS adapter requires Node.js (",[551,927,928],{},"node:fs","). On the Edge runtime it logs a one-time ",[551,931,932],{},"[evlog\u002Ffs]"," warning and skips writes. Use ",[551,935,936],{},"evlog\u002Fmemory"," or an HTTP adapter for Edge routes.",[625,939,941],{"className":627,"code":940,"filename":265,"language":630,"meta":631,"style":631},"import { createFsDrain } from 'evlog\u002Ffs'\n\napp.use(evlog({ drain: createFsDrain() }))\n",[551,942,943,961,965],{"__ignoreMap":631},[635,944,945,947,949,951,953,955,957,959],{"class":637,"line":638},[635,946,642],{"class":641},[635,948,646],{"class":645},[635,950,650],{"class":649},[635,952,653],{"class":645},[635,954,656],{"class":641},[635,956,659],{"class":645},[635,958,663],{"class":662},[635,960,666],{"class":645},[635,962,963],{"class":637,"line":690},[635,964,713],{"emptyLinePlaceholder":712},[635,966,967,970,972,975,977,980,982,985,988,990,992,995,997],{"class":637,"line":709},[635,968,969],{"class":649},"app",[635,971,753],{"class":645},[635,973,974],{"class":725},"use",[635,976,729],{"class":649},[635,978,979],{"class":725},"evlog",[635,981,729],{"class":649},[635,983,984],{"class":645},"{",[635,986,987],{"class":764}," drain",[635,989,888],{"class":645},[635,991,650],{"class":725},[635,993,994],{"class":649},"() ",[635,996,786],{"class":645},[635,998,999],{"class":649},"))\n",[625,1001,1002],{"className":627,"code":940,"filename":260,"language":630,"meta":631,"style":631},[551,1003,1004,1022,1026],{"__ignoreMap":631},[635,1005,1006,1008,1010,1012,1014,1016,1018,1020],{"class":637,"line":638},[635,1007,642],{"class":641},[635,1009,646],{"class":645},[635,1011,650],{"class":649},[635,1013,653],{"class":645},[635,1015,656],{"class":641},[635,1017,659],{"class":645},[635,1019,663],{"class":662},[635,1021,666],{"class":645},[635,1023,1024],{"class":637,"line":690},[635,1025,713],{"emptyLinePlaceholder":712},[635,1027,1028,1030,1032,1034,1036,1038,1040,1042,1044,1046,1048,1050,1052],{"class":637,"line":709},[635,1029,969],{"class":649},[635,1031,753],{"class":645},[635,1033,974],{"class":725},[635,1035,729],{"class":649},[635,1037,979],{"class":725},[635,1039,729],{"class":649},[635,1041,984],{"class":645},[635,1043,987],{"class":764},[635,1045,888],{"class":645},[635,1047,650],{"class":725},[635,1049,994],{"class":649},[635,1051,786],{"class":645},[635,1053,999],{"class":649},[625,1055,1057],{"className":627,"code":1056,"filename":270,"language":630,"meta":631,"style":631},"import { createFsDrain } from 'evlog\u002Ffs'\n\nawait app.register(evlog, { drain: createFsDrain() })\n",[551,1058,1059,1077,1081],{"__ignoreMap":631},[635,1060,1061,1063,1065,1067,1069,1071,1073,1075],{"class":637,"line":638},[635,1062,642],{"class":641},[635,1064,646],{"class":645},[635,1066,650],{"class":649},[635,1068,653],{"class":645},[635,1070,656],{"class":641},[635,1072,659],{"class":645},[635,1074,663],{"class":662},[635,1076,666],{"class":645},[635,1078,1079],{"class":637,"line":690},[635,1080,713],{"emptyLinePlaceholder":712},[635,1082,1083,1086,1089,1091,1094,1097,1099,1101,1103,1105,1107,1109,1111],{"class":637,"line":709},[635,1084,1085],{"class":641},"await",[635,1087,1088],{"class":649}," app",[635,1090,753],{"class":645},[635,1092,1093],{"class":725},"register",[635,1095,1096],{"class":649},"(evlog",[635,1098,775],{"class":645},[635,1100,646],{"class":645},[635,1102,987],{"class":764},[635,1104,888],{"class":645},[635,1106,650],{"class":725},[635,1108,994],{"class":649},[635,1110,786],{"class":645},[635,1112,789],{"class":649},[625,1114,1115],{"className":627,"code":940,"filename":275,"language":630,"meta":631,"style":631},[551,1116,1117,1135,1139],{"__ignoreMap":631},[635,1118,1119,1121,1123,1125,1127,1129,1131,1133],{"class":637,"line":638},[635,1120,642],{"class":641},[635,1122,646],{"class":645},[635,1124,650],{"class":649},[635,1126,653],{"class":645},[635,1128,656],{"class":641},[635,1130,659],{"class":645},[635,1132,663],{"class":662},[635,1134,666],{"class":645},[635,1136,1137],{"class":637,"line":690},[635,1138,713],{"emptyLinePlaceholder":712},[635,1140,1141,1143,1145,1147,1149,1151,1153,1155,1157,1159,1161,1163,1165],{"class":637,"line":709},[635,1142,969],{"class":649},[635,1144,753],{"class":645},[635,1146,974],{"class":725},[635,1148,729],{"class":649},[635,1150,979],{"class":725},[635,1152,729],{"class":649},[635,1154,984],{"class":645},[635,1156,987],{"class":764},[635,1158,888],{"class":645},[635,1160,650],{"class":725},[635,1162,994],{"class":649},[635,1164,786],{"class":645},[635,1166,999],{"class":649},[625,1168,1170],{"className":627,"code":1169,"filename":255,"language":630,"meta":631,"style":631},"import { createFsDrain } from 'evlog\u002Ffs'\n\nEvlogModule.forRoot({ drain: createFsDrain() })\n",[551,1171,1172,1190,1194],{"__ignoreMap":631},[635,1173,1174,1176,1178,1180,1182,1184,1186,1188],{"class":637,"line":638},[635,1175,642],{"class":641},[635,1177,646],{"class":645},[635,1179,650],{"class":649},[635,1181,653],{"class":645},[635,1183,656],{"class":641},[635,1185,659],{"class":645},[635,1187,663],{"class":662},[635,1189,666],{"class":645},[635,1191,1192],{"class":637,"line":690},[635,1193,713],{"emptyLinePlaceholder":712},[635,1195,1196,1199,1201,1204,1206,1208,1210,1212,1214,1216,1218],{"class":637,"line":709},[635,1197,1198],{"class":649},"EvlogModule",[635,1200,753],{"class":645},[635,1202,1203],{"class":725},"forRoot",[635,1205,729],{"class":649},[635,1207,984],{"class":645},[635,1209,987],{"class":764},[635,1211,888],{"class":645},[635,1213,650],{"class":725},[635,1215,994],{"class":649},[635,1217,786],{"class":645},[635,1219,789],{"class":649},[625,1221,1223],{"className":627,"code":1222,"filename":290,"language":630,"meta":631,"style":631},"import { createFsDrain } from 'evlog\u002Ffs'\n\ninitLogger({ drain: createFsDrain() })\n",[551,1224,1225,1243,1247],{"__ignoreMap":631},[635,1226,1227,1229,1231,1233,1235,1237,1239,1241],{"class":637,"line":638},[635,1228,642],{"class":641},[635,1230,646],{"class":645},[635,1232,650],{"class":649},[635,1234,653],{"class":645},[635,1236,656],{"class":641},[635,1238,659],{"class":645},[635,1240,663],{"class":662},[635,1242,666],{"class":645},[635,1244,1245],{"class":637,"line":690},[635,1246,713],{"emptyLinePlaceholder":712},[635,1248,1249,1252,1254,1256,1258,1260,1262,1264,1266],{"class":637,"line":709},[635,1250,1251],{"class":725},"initLogger",[635,1253,729],{"class":649},[635,1255,984],{"class":645},[635,1257,987],{"class":764},[635,1259,888],{"class":645},[635,1261,650],{"class":725},[635,1263,994],{"class":649},[635,1265,786],{"class":645},[635,1267,789],{"class":649},[536,1269,1270,1271,1273],{},"Logs start appearing in ",[551,1272,553],{}," immediately.",[618,1275,1277],{"id":1276},"file-structure","File Structure",[625,1279,1285],{"className":1280,"code":1282,"filename":1283,"language":1284,"meta":631},[1281],"language-text",".evlog\u002F\n  logs\u002F\n    2026-03-14.jsonl    ← one file per day\n    2026-03-13.jsonl\n    2026-03-12.jsonl\n",".evlog\u002Flogs directory layout","text",[551,1286,1282],{"__ignoreMap":631},[536,1288,1289,1290,1293],{},"Each ",[551,1291,1292],{},".jsonl"," file contains one JSON object per line (NDJSON format), making it easy to parse, grep, and stream.",[922,1295,1298,1299,1302,1303,1306,1307,1310],{"color":1296,"icon":1297},"success","i-lucide-git-branch","A ",[551,1300,1301],{},".gitignore"," is automatically created on first write, inside the ",[551,1304,1305],{},".evlog\u002F"," ancestor directory when present or in the configured ",[551,1308,1309],{},"dir"," otherwise. Log files are never committed to version control.",[618,1312,504],{"id":1313},"configuration",[1315,1316,336],"h3",{"id":1317},"options",[1319,1320,1321,1340],"table",{},[1322,1323,1324],"thead",{},[1325,1326,1327,1331,1334,1337],"tr",{},[1328,1329,1330],"th",{},"Option",[1328,1332,1333],{},"Type",[1328,1335,1336],{},"Default",[1328,1338,1339],{},"Description",[1341,1342,1343,1363,1383,1401],"tbody",{},[1325,1344,1345,1350,1355,1360],{},[1346,1347,1348],"td",{},[551,1349,1309],{},[1346,1351,1352],{},[551,1353,1354],{},"string",[1346,1356,1357],{},[551,1358,1359],{},"'.evlog\u002Flogs'",[1346,1361,1362],{},"Directory for log files",[1325,1364,1365,1370,1375,1380],{},[1346,1366,1367],{},[551,1368,1369],{},"maxFiles",[1346,1371,1372],{},[551,1373,1374],{},"number",[1346,1376,1377],{},[551,1378,1379],{},"undefined",[1346,1381,1382],{},"Max files to keep (auto-deletes oldest)",[1325,1384,1385,1390,1394,1398],{},[1346,1386,1387],{},[551,1388,1389],{},"maxSizePerFile",[1346,1391,1392],{},[551,1393,1374],{},[1346,1395,1396],{},[551,1397,1379],{},[1346,1399,1400],{},"Max bytes per file before rotating",[1325,1402,1403,1408,1413,1418],{},[1346,1404,1405],{},[551,1406,1407],{},"pretty",[1346,1409,1410],{},[551,1411,1412],{},"boolean",[1346,1414,1415],{},[551,1416,1417],{},"false",[1346,1419,1420],{},"Pretty-print JSON (multi-line, readable)",[1315,1422,1424],{"id":1423},"examples","Examples",[625,1426,1429],{"className":627,"code":1427,"filename":1428,"language":630,"meta":631,"style":631},"\u002F\u002F Keep only the last 7 days of logs\ncreateFsDrain({ maxFiles: 7 })\n\n\u002F\u002F Rotate files at 10MB, keep 30 files\ncreateFsDrain({\n  maxSizePerFile: 10 * 1024 * 1024,\n  maxFiles: 30,\n})\n\n\u002F\u002F Pretty-print for human reading\ncreateFsDrain({ pretty: true })\n\n\u002F\u002F Custom directory\ncreateFsDrain({ dir: '\u002Fvar\u002Flog\u002Fmyapp' })\n","server\u002Fplugins\u002Fevlog-drain.ts",[551,1430,1431,1436,1458,1462,1467,1475,1497,1509,1515,1520,1526,1548,1553,1559],{"__ignoreMap":631},[635,1432,1433],{"class":637,"line":638},[635,1434,1435],{"class":686},"\u002F\u002F Keep only the last 7 days of logs\n",[635,1437,1438,1441,1443,1445,1448,1450,1454,1456],{"class":637,"line":690},[635,1439,1440],{"class":725},"createFsDrain",[635,1442,729],{"class":649},[635,1444,984],{"class":645},[635,1446,1447],{"class":764}," maxFiles",[635,1449,888],{"class":645},[635,1451,1453],{"class":1452},"sbssI"," 7",[635,1455,653],{"class":645},[635,1457,789],{"class":649},[635,1459,1460],{"class":637,"line":709},[635,1461,713],{"emptyLinePlaceholder":712},[635,1463,1464],{"class":637,"line":716},[635,1465,1466],{"class":686},"\u002F\u002F Rotate files at 10MB, keep 30 files\n",[635,1468,1469,1471,1473],{"class":637,"line":747},[635,1470,1440],{"class":725},[635,1472,729],{"class":649},[635,1474,880],{"class":645},[635,1476,1477,1480,1482,1485,1488,1491,1493,1495],{"class":637,"line":783},[635,1478,1479],{"class":764},"  maxSizePerFile",[635,1481,888],{"class":645},[635,1483,1484],{"class":1452}," 10",[635,1486,1487],{"class":645}," *",[635,1489,1490],{"class":1452}," 1024",[635,1492,1487],{"class":645},[635,1494,1490],{"class":1452},[635,1496,898],{"class":645},[635,1498,1499,1502,1504,1507],{"class":637,"line":901},[635,1500,1501],{"class":764},"  maxFiles",[635,1503,888],{"class":645},[635,1505,1506],{"class":1452}," 30",[635,1508,898],{"class":645},[635,1510,1511,1513],{"class":637,"line":916},[635,1512,786],{"class":645},[635,1514,789],{"class":649},[635,1516,1518],{"class":637,"line":1517},9,[635,1519,713],{"emptyLinePlaceholder":712},[635,1521,1523],{"class":637,"line":1522},10,[635,1524,1525],{"class":686},"\u002F\u002F Pretty-print for human reading\n",[635,1527,1529,1531,1533,1535,1538,1540,1544,1546],{"class":637,"line":1528},11,[635,1530,1440],{"class":725},[635,1532,729],{"class":649},[635,1534,984],{"class":645},[635,1536,1537],{"class":764}," pretty",[635,1539,888],{"class":645},[635,1541,1543],{"class":1542},"sfNiH"," true",[635,1545,653],{"class":645},[635,1547,789],{"class":649},[635,1549,1551],{"class":637,"line":1550},12,[635,1552,713],{"emptyLinePlaceholder":712},[635,1554,1556],{"class":637,"line":1555},13,[635,1557,1558],{"class":686},"\u002F\u002F Custom directory\n",[635,1560,1562,1564,1566,1568,1571,1573,1575,1578,1580,1582],{"class":637,"line":1561},14,[635,1563,1440],{"class":725},[635,1565,729],{"class":649},[635,1567,984],{"class":645},[635,1569,1570],{"class":764}," dir",[635,1572,888],{"class":645},[635,1574,659],{"class":645},[635,1576,1577],{"class":662},"\u002Fvar\u002Flog\u002Fmyapp",[635,1579,767],{"class":645},[635,1581,653],{"class":645},[635,1583,789],{"class":649},[1315,1585,1587],{"id":1586},"file-rotation","File Rotation",[536,1589,1590,1591,1594,1595,1597],{},"By default, a new file is created each day (",[551,1592,1593],{},"2026-03-14.jsonl","). When ",[551,1596,1389],{}," is set, the adapter creates suffixed files when the current file exceeds the limit:",[625,1599,1603],{"className":1600,"code":1601,"filename":1602,"language":1284,"meta":631},[1281],".evlog\u002Flogs\u002F\n  2026-03-14.jsonl      ← base file (full)\n  2026-03-14.1.jsonl    ← first rotation\n  2026-03-14.2.jsonl    ← second rotation\n","Rotated log files",[551,1604,1601],{"__ignoreMap":631},[1315,1606,1608],{"id":1607},"cleanup","Cleanup",[536,1610,1611,1612,1614,1615,1617],{},"When ",[551,1613,1369],{}," is set, the adapter automatically deletes the oldest ",[551,1616,1292],{}," files after each write, keeping only the most recent files.",[618,1619,1621],{"id":1620},"combining-with-network-drains","Combining with Network Drains",[536,1623,1624],{},"Use the FS adapter alongside a network drain for local backup:",[625,1626,1628],{"className":627,"code":1627,"filename":1428,"language":630,"meta":631,"style":631},"import { createFsDrain } from 'evlog\u002Ffs'\nimport { createAxiomDrain } from 'evlog\u002Faxiom'\n\nconst fs = createFsDrain({ maxFiles: 7 })\nconst axiom = createAxiomDrain()\n\nconst drain = async (ctx) => {\n  await Promise.allSettled([fs(ctx), axiom(ctx)])\n}\n",[551,1629,1630,1648,1668,1672,1699,1713,1717,1741,1779],{"__ignoreMap":631},[635,1631,1632,1634,1636,1638,1640,1642,1644,1646],{"class":637,"line":638},[635,1633,642],{"class":641},[635,1635,646],{"class":645},[635,1637,650],{"class":649},[635,1639,653],{"class":645},[635,1641,656],{"class":641},[635,1643,659],{"class":645},[635,1645,663],{"class":662},[635,1647,666],{"class":645},[635,1649,1650,1652,1654,1657,1659,1661,1663,1666],{"class":637,"line":690},[635,1651,642],{"class":641},[635,1653,646],{"class":645},[635,1655,1656],{"class":649}," createAxiomDrain",[635,1658,653],{"class":645},[635,1660,656],{"class":641},[635,1662,659],{"class":645},[635,1664,1665],{"class":662},"evlog\u002Faxiom",[635,1667,666],{"class":645},[635,1669,1670],{"class":637,"line":709},[635,1671,713],{"emptyLinePlaceholder":712},[635,1673,1674,1677,1680,1683,1685,1687,1689,1691,1693,1695,1697],{"class":637,"line":716},[635,1675,1676],{"class":740},"const",[635,1678,1679],{"class":649}," fs ",[635,1681,1682],{"class":645},"=",[635,1684,650],{"class":725},[635,1686,729],{"class":649},[635,1688,984],{"class":645},[635,1690,1447],{"class":764},[635,1692,888],{"class":645},[635,1694,1453],{"class":1452},[635,1696,653],{"class":645},[635,1698,789],{"class":649},[635,1700,1701,1703,1706,1708,1710],{"class":637,"line":747},[635,1702,1676],{"class":740},[635,1704,1705],{"class":649}," axiom ",[635,1707,1682],{"class":645},[635,1709,1656],{"class":725},[635,1711,1712],{"class":649},"()\n",[635,1714,1715],{"class":637,"line":783},[635,1716,713],{"emptyLinePlaceholder":712},[635,1718,1719,1721,1724,1726,1729,1732,1735,1737,1739],{"class":637,"line":901},[635,1720,1676],{"class":740},[635,1722,1723],{"class":649}," drain ",[635,1725,1682],{"class":645},[635,1727,1728],{"class":740}," async",[635,1730,1731],{"class":645}," (",[635,1733,1734],{"class":734},"ctx",[635,1736,564],{"class":645},[635,1738,741],{"class":740},[635,1740,744],{"class":645},[635,1742,1743,1746,1750,1752,1755,1758,1761,1763,1765,1767,1769,1772,1774,1776],{"class":637,"line":916},[635,1744,1745],{"class":641},"  await",[635,1747,1749],{"class":1748},"sBMFI"," Promise",[635,1751,753],{"class":645},[635,1753,1754],{"class":725},"allSettled",[635,1756,1757],{"class":764},"([",[635,1759,1760],{"class":725},"fs",[635,1762,729],{"class":764},[635,1764,1734],{"class":649},[635,1766,564],{"class":764},[635,1768,775],{"class":645},[635,1770,1771],{"class":725}," axiom",[635,1773,729],{"class":764},[635,1775,1734],{"class":649},[635,1777,1778],{"class":764},")])\n",[635,1780,1781],{"class":637,"line":1517},[635,1782,1783],{"class":645},"}\n",[618,1785,1787],{"id":1786},"querying-logs","Querying Logs",[1315,1789,1791],{"id":1790},"stream-in-real-time","Stream in real-time",[625,1793,1798],{"className":1794,"code":1795,"filename":1796,"language":1797,"meta":631,"style":631},"language-bash shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","tail -f .evlog\u002Flogs\u002F2026-03-14.jsonl\n","Terminal","bash",[551,1799,1800],{"__ignoreMap":631},[635,1801,1802,1805,1808],{"class":637,"line":638},[635,1803,1804],{"class":1748},"tail",[635,1806,1807],{"class":662}," -f",[635,1809,1810],{"class":662}," .evlog\u002Flogs\u002F2026-03-14.jsonl\n",[1315,1812,1814],{"id":1813},"search-with-jq","Search with jq",[625,1816,1818],{"className":1794,"code":1817,"filename":1796,"language":1797,"meta":631,"style":631},"# Find errors\ncat .evlog\u002Flogs\u002F2026-03-14.jsonl | jq 'select(.level == \"error\")'\n\n# Slow requests (over 1s)\ncat .evlog\u002Flogs\u002F2026-03-14.jsonl | jq 'select(.durationMs > 1000)'\n\n# Requests by path\ncat .evlog\u002Flogs\u002F2026-03-14.jsonl | jq 'select(.path == \"\u002Fapi\u002Fcheckout\")'\n",[551,1819,1820,1825,1846,1850,1855,1872,1876,1881],{"__ignoreMap":631},[635,1821,1822],{"class":637,"line":638},[635,1823,1824],{"class":686},"# Find errors\n",[635,1826,1827,1830,1833,1836,1839,1841,1844],{"class":637,"line":690},[635,1828,1829],{"class":1748},"cat",[635,1831,1832],{"class":662}," .evlog\u002Flogs\u002F2026-03-14.jsonl",[635,1834,1835],{"class":645}," |",[635,1837,1838],{"class":1748}," jq",[635,1840,659],{"class":645},[635,1842,1843],{"class":662},"select(.level == \"error\")",[635,1845,666],{"class":645},[635,1847,1848],{"class":637,"line":709},[635,1849,713],{"emptyLinePlaceholder":712},[635,1851,1852],{"class":637,"line":716},[635,1853,1854],{"class":686},"# Slow requests (over 1s)\n",[635,1856,1857,1859,1861,1863,1865,1867,1870],{"class":637,"line":747},[635,1858,1829],{"class":1748},[635,1860,1832],{"class":662},[635,1862,1835],{"class":645},[635,1864,1838],{"class":1748},[635,1866,659],{"class":645},[635,1868,1869],{"class":662},"select(.durationMs > 1000)",[635,1871,666],{"class":645},[635,1873,1874],{"class":637,"line":783},[635,1875,713],{"emptyLinePlaceholder":712},[635,1877,1878],{"class":637,"line":901},[635,1879,1880],{"class":686},"# Requests by path\n",[635,1882,1883,1885,1887,1889,1891,1893,1896],{"class":637,"line":916},[635,1884,1829],{"class":1748},[635,1886,1832],{"class":662},[635,1888,1835],{"class":645},[635,1890,1838],{"class":1748},[635,1892,659],{"class":645},[635,1894,1895],{"class":662},"select(.path == \"\u002Fapi\u002Fcheckout\")",[635,1897,666],{"class":645},[1315,1899,1901],{"id":1900},"search-with-grep","Search with grep",[625,1903,1905],{"className":1794,"code":1904,"filename":1796,"language":1797,"meta":631,"style":631},"# Find all errors\ngrep '\"level\":\"error\"' .evlog\u002Flogs\u002F2026-03-14.jsonl\n\n# Find by request ID\ngrep 'req_abc123' .evlog\u002Flogs\u002F*.jsonl\n",[551,1906,1907,1912,1926,1930,1935],{"__ignoreMap":631},[635,1908,1909],{"class":637,"line":638},[635,1910,1911],{"class":686},"# Find all errors\n",[635,1913,1914,1917,1919,1922,1924],{"class":637,"line":690},[635,1915,1916],{"class":1748},"grep",[635,1918,659],{"class":645},[635,1920,1921],{"class":662},"\"level\":\"error\"",[635,1923,767],{"class":645},[635,1925,1810],{"class":662},[635,1927,1928],{"class":637,"line":709},[635,1929,713],{"emptyLinePlaceholder":712},[635,1931,1932],{"class":637,"line":716},[635,1933,1934],{"class":686},"# Find by request ID\n",[635,1936,1937,1939,1941,1944,1946,1949,1952],{"class":637,"line":747},[635,1938,1916],{"class":1748},[635,1940,659],{"class":645},[635,1942,1943],{"class":662},"req_abc123",[635,1945,767],{"class":645},[635,1947,1948],{"class":662}," .evlog\u002Flogs\u002F",[635,1950,1951],{"class":649},"*",[635,1953,1954],{"class":662},".jsonl\n",[618,1956,1958],{"id":1957},"direct-api-usage","Direct API Usage",[536,1960,1961],{},"For advanced use cases, use the lower-level write functions:",[625,1963,1965],{"className":627,"code":1964,"filename":629,"language":630,"meta":631,"style":631},"import { writeToFs, writeBatchToFs } from 'evlog\u002Ffs'\n\nawait writeToFs(event, {\n  dir: '.evlog\u002Flogs',\n  pretty: false,\n})\n\nawait writeBatchToFs(events, {\n  dir: '.evlog\u002Flogs',\n  pretty: false,\n})\n",[551,1966,1967,1991,1995,2008,2024,2036,2042,2046,2059,2073,2083],{"__ignoreMap":631},[635,1968,1969,1971,1973,1976,1978,1981,1983,1985,1987,1989],{"class":637,"line":638},[635,1970,642],{"class":641},[635,1972,646],{"class":645},[635,1974,1975],{"class":649}," writeToFs",[635,1977,775],{"class":645},[635,1979,1980],{"class":649}," writeBatchToFs",[635,1982,653],{"class":645},[635,1984,656],{"class":641},[635,1986,659],{"class":645},[635,1988,663],{"class":662},[635,1990,666],{"class":645},[635,1992,1993],{"class":637,"line":690},[635,1994,713],{"emptyLinePlaceholder":712},[635,1996,1997,1999,2001,2004,2006],{"class":637,"line":709},[635,1998,1085],{"class":641},[635,2000,1975],{"class":725},[635,2002,2003],{"class":649},"(event",[635,2005,775],{"class":645},[635,2007,744],{"class":645},[635,2009,2010,2013,2015,2017,2020,2022],{"class":637,"line":716},[635,2011,2012],{"class":764},"  dir",[635,2014,888],{"class":645},[635,2016,659],{"class":645},[635,2018,2019],{"class":662},".evlog\u002Flogs",[635,2021,767],{"class":645},[635,2023,898],{"class":645},[635,2025,2026,2029,2031,2034],{"class":637,"line":747},[635,2027,2028],{"class":764},"  pretty",[635,2030,888],{"class":645},[635,2032,2033],{"class":1542}," false",[635,2035,898],{"class":645},[635,2037,2038,2040],{"class":637,"line":783},[635,2039,786],{"class":645},[635,2041,789],{"class":649},[635,2043,2044],{"class":637,"line":901},[635,2045,713],{"emptyLinePlaceholder":712},[635,2047,2048,2050,2052,2055,2057],{"class":637,"line":916},[635,2049,1085],{"class":641},[635,2051,1980],{"class":725},[635,2053,2054],{"class":649},"(events",[635,2056,775],{"class":645},[635,2058,744],{"class":645},[635,2060,2061,2063,2065,2067,2069,2071],{"class":637,"line":1517},[635,2062,2012],{"class":764},[635,2064,888],{"class":645},[635,2066,659],{"class":645},[635,2068,2019],{"class":662},[635,2070,767],{"class":645},[635,2072,898],{"class":645},[635,2074,2075,2077,2079,2081],{"class":637,"line":1522},[635,2076,2028],{"class":764},[635,2078,888],{"class":645},[635,2080,2033],{"class":1542},[635,2082,898],{"class":645},[635,2084,2085,2087],{"class":637,"line":1528},[635,2086,786],{"class":645},[635,2088,789],{"class":649},[618,2090,2092],{"id":2091},"ai-log-analysis","AI Log Analysis",[536,2094,2095,2096,2102],{},"The file system drain pairs with the ",[607,2097,2098,2101],{"href":527},[551,2099,2100],{},"analyze-logs"," agent skill",". When installed, your AI assistant can read the NDJSON logs directly to debug errors, trace requests, and investigate performance without any external tools.",[618,2104,2106],{"id":2105},"next-steps","Next Steps",[540,2108,2109,2114,2120,2126],{},[543,2110,2111,2113],{},[607,2112,526],{"href":527}," - Let AI analyze your logs",[543,2115,2116,2119],{},[607,2117,2118],{"href":152},"Axiom Adapter"," - Send logs to Axiom for querying and dashboards",[543,2121,2122,2125],{},[607,2123,2124],{"href":496},"Pipeline"," - Add batching and retry to any drain",[543,2127,2128,2131],{},[607,2129,2130],{"href":491},"Custom Adapters"," - Build your own adapter",[2133,2134,2135],"style",{},"html pre.shiki code .s7zQu, html code.shiki .s7zQu{--shiki-light:#39ADB5;--shiki-light-font-style:italic;--shiki-default:#89DDFF;--shiki-default-font-style:italic;--shiki-dark:#89DDFF;--shiki-dark-font-style:italic}html pre.shiki code .sMK4o, html code.shiki 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