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Drains",{"type":616,"value":617,"toc":4472},"minimark",[618,632,635,686,693,814,821,834,1501,1524,1529,1532,2006,2010,2015,2056,2086,2090,2097,3266,3274,3278,3290,3646,3652,3658,3844,3868,3872,3882,4142,4159,4163,4168,4274,4278,4283,4324,4333,4337,4342,4384,4390,4394,4397,4405,4419,4431,4435,4468],[619,620,621,622,626,627,631],"p",{},"A ",[623,624,625],"strong",{},"drain"," is the terminal step of evlog's pipeline: a function that receives wide events and ships them somewhere: an HTTP API, a message queue, a database, a webhook, a local file. evlog ships built-in drains for popular providers (",[628,629,630],"a",{"href":163},"Adapters overview","). When you need a destination that isn't covered, you write your own.",[619,633,634],{},"Two factories cover every case:",[636,637,638,651],"table",{},[639,640,641],"thead",{},[642,643,644,648],"tr",{},[645,646,647],"th",{},"You have…",[645,649,650],{},"Use",[652,653,654,673],"tbody",{},[642,655,656,665],{},[657,658,659,660,664],"td",{},"An HTTP backend (REST, JSON ingest, vendor ",[661,662,663],"code",{},"\u002Fv1\u002Flogs"," endpoint)",[657,666,667],{},[628,668,670],{"href":669},"#definehttpdrain-the-http-recipe",[661,671,672],{},"defineHttpDrain",[642,674,675,678],{},[657,676,677],{},"A non-HTTP transport (gRPC, WebSocket, vendor SDK, queue, raw socket)",[657,679,680],{},[628,681,683],{"href":682},"#definedrain-non-http-transports",[661,684,685],{},"defineDrain",[619,687,688,689,692],{},"Both come from ",[661,690,691],{},"evlog\u002Ftoolkit"," and are the exact factories every built-in adapter uses.",[694,695,699,702,801],"prompt",{":actions":696,"description":697,"icon":698},"[\"copy\",\"cursor\",\"claude\"]","Build a custom evlog drain","i-lucide-code-2",[619,700,701],{},"Build a custom evlog drain that ships wide events to a backend without a built-in adapter.",[703,704,705,720,731,746,764,779,784,794],"ul",{},[706,707,708,709,712,713,715,716,719],"li",{},"For HTTP backends, use ",[661,710,711],{},"defineHttpDrain({ name, resolve, encode })"," from ",[661,714,691],{},", and never call ",[661,717,718],{},"fetch"," directly",[706,721,722,723,726,727,730],{},"For non-HTTP transports (queue, DB, native SDK, raw socket), use ",[661,724,725],{},"defineDrain({ name, send })"," and implement ",[661,728,729],{},"send(events)"," myself",[706,732,733,734,737,738,741,742,745],{},"Resolve config lazily inside ",[661,735,736],{},"resolve()"," via ",[661,739,740],{},"resolveAdapterConfig(namespace, fields, overrides)"," so users get the standard precedence (overrides → ",[661,743,744],{},"runtimeConfig.evlog.\u003Cns>"," → env)",[706,747,748,749,752,753,756,757,760,761],{},"Use the standardized field names: ",[661,750,751],{},"apiKey"," for bearer secrets, ",[661,754,755],{},"endpoint"," for the base URL, ",[661,758,759],{},"serviceName",", ",[661,762,763],{},"timeout",[706,765,766,767,770,771,774,775,778],{},"Encode batched events into the destination's wire format inside ",[661,768,769],{},"encode(events, config)",", return ",[661,772,773],{},"{ url, headers, body }"," (or ",[661,776,777],{},"null"," to opt out of the batch)",[706,780,781,783],{},[661,782,672],{}," handles retries, timeouts, error isolation, batching, and identity headers. Don't reimplement them",[706,785,786,787,790,791,793],{},"Wire the drain via ",[661,788,789],{},"defineEvlog({ drain: createMyDrain() })"," or my framework's middleware ",[661,792,625],{}," option",[706,795,796,797,800],{},"For production, wrap the result in ",[661,798,799],{},"createDrainPipeline"," for batching + retries",[619,802,803,804,809,810],{},"Docs: ",[628,805,806],{"href":806,"rel":807},"https:\u002F\u002Fwww.evlog.dev\u002Fextend\u002Fcustom-drains",[808],"nofollow","\nPipeline: ",[628,811,812],{"href":812,"rel":813},"https:\u002F\u002Fwww.evlog.dev\u002Fextend\u002Fdrain-pipeline",[808],[815,816,818,820],"h2",{"id":817},"definehttpdrain-the-http-recipe",[661,819,672],{}," (the HTTP recipe)",[619,822,823,824,826,827,829,830,833],{},"The recipe every built-in adapter follows. Two pure functions: ",[661,825,736],{}," returns the config (or ",[661,828,777],{}," to skip), ",[661,831,832],{},"encode()"," returns the HTTP request payload.",[835,836,837],"code-collapse",{},[838,839,845],"pre",{"className":840,"code":841,"filename":842,"language":843,"meta":844,"style":844},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import {\n  defineHttpDrain,\n  resolveAdapterConfig,\n  type ConfigField,\n} from 'evlog\u002Ftoolkit'\n\ninterface MyServiceConfig {\n  apiKey: string\n  endpoint?: string\n  timeout?: number\n}\n\nconst FIELDS: ConfigField\u003CMyServiceConfig>[] = [\n  { key: 'apiKey', env: ['MYSERVICE_API_KEY'] },\n  { key: 'endpoint', env: ['MYSERVICE_ENDPOINT'] },\n  { key: 'timeout' },\n]\n\nexport function createMyServiceDrain(overrides?: Partial\u003CMyServiceConfig>) {\n  return defineHttpDrain\u003CMyServiceConfig>({\n    name: 'myservice',\n    resolve: async () => {\n      const cfg = await resolveAdapterConfig\u003CMyServiceConfig>('myservice', FIELDS, overrides)\n      if (!cfg.apiKey) {\n        console.error('[evlog\u002Fmyservice] Missing apiKey')\n        return null\n      }\n      return cfg as MyServiceConfig\n    },\n    encode: (events, cfg) => ({\n      url: `${cfg.endpoint ?? 'https:\u002F\u002Fapi.myservice.com'}\u002Fv1\u002Fingest`,\n      headers: {\n        'Content-Type': 'application\u002Fjson',\n        Authorization: `Bearer ${cfg.apiKey}`,\n      },\n      body: JSON.stringify(events),\n    }),\n  })\n}\n","lib\u002Fmy-drain.ts","typescript","",[661,846,847,860,870,878,889,907,914,927,940,951,962,968,973,1004,1046,1080,1098,1104,1109,1143,1163,1180,1199,1243,1268,1290,1299,1305,1319,1325,1351,1388,1398,1420,1448,1454,1478,1488,1496],{"__ignoreMap":844},[848,849,852,856],"span",{"class":850,"line":851},"line",1,[848,853,855],{"class":854},"s7zQu","import",[848,857,859],{"class":858},"sMK4o"," {\n",[848,861,863,867],{"class":850,"line":862},2,[848,864,866],{"class":865},"sTEyZ","  defineHttpDrain",[848,868,869],{"class":858},",\n",[848,871,873,876],{"class":850,"line":872},3,[848,874,875],{"class":865},"  resolveAdapterConfig",[848,877,869],{"class":858},[848,879,881,884,887],{"class":850,"line":880},4,[848,882,883],{"class":854},"  type",[848,885,886],{"class":865}," ConfigField",[848,888,869],{"class":858},[848,890,892,895,898,901,904],{"class":850,"line":891},5,[848,893,894],{"class":858},"}",[848,896,897],{"class":854}," from",[848,899,900],{"class":858}," '",[848,902,691],{"class":903},"sfazB",[848,905,906],{"class":858},"'\n",[848,908,910],{"class":850,"line":909},6,[848,911,913],{"emptyLinePlaceholder":912},true,"\n",[848,915,917,921,925],{"class":850,"line":916},7,[848,918,920],{"class":919},"spNyl","interface",[848,922,924],{"class":923},"sBMFI"," MyServiceConfig",[848,926,859],{"class":858},[848,928,930,934,937],{"class":850,"line":929},8,[848,931,933],{"class":932},"swJcz","  apiKey",[848,935,936],{"class":858},":",[848,938,939],{"class":923}," string\n",[848,941,943,946,949],{"class":850,"line":942},9,[848,944,945],{"class":932},"  endpoint",[848,947,948],{"class":858},"?:",[848,950,939],{"class":923},[848,952,954,957,959],{"class":850,"line":953},10,[848,955,956],{"class":932},"  timeout",[848,958,948],{"class":858},[848,960,961],{"class":923}," number\n",[848,963,965],{"class":850,"line":964},11,[848,966,967],{"class":858},"}\n",[848,969,971],{"class":850,"line":970},12,[848,972,913],{"emptyLinePlaceholder":912},[848,974,976,979,982,984,986,989,992,995,998,1001],{"class":850,"line":975},13,[848,977,978],{"class":919},"const",[848,980,981],{"class":865}," FIELDS",[848,983,936],{"class":858},[848,985,886],{"class":923},[848,987,988],{"class":858},"\u003C",[848,990,991],{"class":923},"MyServiceConfig",[848,993,994],{"class":858},">",[848,996,997],{"class":865},"[] ",[848,999,1000],{"class":858},"=",[848,1002,1003],{"class":865}," [\n",[848,1005,1007,1010,1013,1015,1017,1019,1022,1025,1028,1030,1033,1035,1038,1040,1043],{"class":850,"line":1006},14,[848,1008,1009],{"class":858},"  {",[848,1011,1012],{"class":932}," key",[848,1014,936],{"class":858},[848,1016,900],{"class":858},[848,1018,751],{"class":903},[848,1020,1021],{"class":858},"'",[848,1023,1024],{"class":858},",",[848,1026,1027],{"class":932}," env",[848,1029,936],{"class":858},[848,1031,1032],{"class":865}," [",[848,1034,1021],{"class":858},[848,1036,1037],{"class":903},"MYSERVICE_API_KEY",[848,1039,1021],{"class":858},[848,1041,1042],{"class":865},"] ",[848,1044,1045],{"class":858},"},\n",[848,1047,1049,1051,1053,1055,1057,1059,1061,1063,1065,1067,1069,1071,1074,1076,1078],{"class":850,"line":1048},15,[848,1050,1009],{"class":858},[848,1052,1012],{"class":932},[848,1054,936],{"class":858},[848,1056,900],{"class":858},[848,1058,755],{"class":903},[848,1060,1021],{"class":858},[848,1062,1024],{"class":858},[848,1064,1027],{"class":932},[848,1066,936],{"class":858},[848,1068,1032],{"class":865},[848,1070,1021],{"class":858},[848,1072,1073],{"class":903},"MYSERVICE_ENDPOINT",[848,1075,1021],{"class":858},[848,1077,1042],{"class":865},[848,1079,1045],{"class":858},[848,1081,1083,1085,1087,1089,1091,1093,1095],{"class":850,"line":1082},16,[848,1084,1009],{"class":858},[848,1086,1012],{"class":932},[848,1088,936],{"class":858},[848,1090,900],{"class":858},[848,1092,763],{"class":903},[848,1094,1021],{"class":858},[848,1096,1097],{"class":858}," },\n",[848,1099,1101],{"class":850,"line":1100},17,[848,1102,1103],{"class":865},"]\n",[848,1105,1107],{"class":850,"line":1106},18,[848,1108,913],{"emptyLinePlaceholder":912},[848,1110,1112,1115,1118,1122,1125,1129,1131,1134,1136,1138,1141],{"class":850,"line":1111},19,[848,1113,1114],{"class":854},"export",[848,1116,1117],{"class":919}," function",[848,1119,1121],{"class":1120},"s2Zo4"," createMyServiceDrain",[848,1123,1124],{"class":858},"(",[848,1126,1128],{"class":1127},"sHdIc","overrides",[848,1130,948],{"class":858},[848,1132,1133],{"class":923}," Partial",[848,1135,988],{"class":858},[848,1137,991],{"class":923},[848,1139,1140],{"class":858},">)",[848,1142,859],{"class":858},[848,1144,1146,1149,1152,1154,1156,1158,1160],{"class":850,"line":1145},20,[848,1147,1148],{"class":854},"  return",[848,1150,1151],{"class":1120}," defineHttpDrain",[848,1153,988],{"class":858},[848,1155,991],{"class":923},[848,1157,994],{"class":858},[848,1159,1124],{"class":932},[848,1161,1162],{"class":858},"{\n",[848,1164,1166,1169,1171,1173,1176,1178],{"class":850,"line":1165},21,[848,1167,1168],{"class":932},"    name",[848,1170,936],{"class":858},[848,1172,900],{"class":858},[848,1174,1175],{"class":903},"myservice",[848,1177,1021],{"class":858},[848,1179,869],{"class":858},[848,1181,1183,1186,1188,1191,1194,1197],{"class":850,"line":1182},22,[848,1184,1185],{"class":1120},"    resolve",[848,1187,936],{"class":858},[848,1189,1190],{"class":919}," async",[848,1192,1193],{"class":858}," ()",[848,1195,1196],{"class":919}," =>",[848,1198,859],{"class":858},[848,1200,1202,1205,1208,1211,1214,1217,1219,1221,1223,1225,1227,1229,1231,1233,1235,1237,1240],{"class":850,"line":1201},23,[848,1203,1204],{"class":919},"      const",[848,1206,1207],{"class":865}," cfg",[848,1209,1210],{"class":858}," =",[848,1212,1213],{"class":854}," await",[848,1215,1216],{"class":1120}," resolveAdapterConfig",[848,1218,988],{"class":858},[848,1220,991],{"class":923},[848,1222,994],{"class":858},[848,1224,1124],{"class":932},[848,1226,1021],{"class":858},[848,1228,1175],{"class":903},[848,1230,1021],{"class":858},[848,1232,1024],{"class":858},[848,1234,981],{"class":865},[848,1236,1024],{"class":858},[848,1238,1239],{"class":865}," overrides",[848,1241,1242],{"class":932},")\n",[848,1244,1246,1249,1252,1255,1258,1261,1263,1266],{"class":850,"line":1245},24,[848,1247,1248],{"class":854},"      if",[848,1250,1251],{"class":932}," (",[848,1253,1254],{"class":858},"!",[848,1256,1257],{"class":865},"cfg",[848,1259,1260],{"class":858},".",[848,1262,751],{"class":865},[848,1264,1265],{"class":932},") ",[848,1267,1162],{"class":858},[848,1269,1271,1274,1276,1279,1281,1283,1286,1288],{"class":850,"line":1270},25,[848,1272,1273],{"class":865},"        console",[848,1275,1260],{"class":858},[848,1277,1278],{"class":1120},"error",[848,1280,1124],{"class":932},[848,1282,1021],{"class":858},[848,1284,1285],{"class":903},"[evlog\u002Fmyservice] Missing apiKey",[848,1287,1021],{"class":858},[848,1289,1242],{"class":932},[848,1291,1293,1296],{"class":850,"line":1292},26,[848,1294,1295],{"class":854},"        return",[848,1297,1298],{"class":858}," null\n",[848,1300,1302],{"class":850,"line":1301},27,[848,1303,1304],{"class":858},"      }\n",[848,1306,1308,1311,1313,1316],{"class":850,"line":1307},28,[848,1309,1310],{"class":854},"      return",[848,1312,1207],{"class":865},[848,1314,1315],{"class":854}," as",[848,1317,1318],{"class":923}," MyServiceConfig\n",[848,1320,1322],{"class":850,"line":1321},29,[848,1323,1324],{"class":858},"    },\n",[848,1326,1328,1331,1333,1335,1338,1340,1342,1345,1347,1349],{"class":850,"line":1327},30,[848,1329,1330],{"class":1120},"    encode",[848,1332,936],{"class":858},[848,1334,1251],{"class":858},[848,1336,1337],{"class":1127},"events",[848,1339,1024],{"class":858},[848,1341,1207],{"class":1127},[848,1343,1344],{"class":858},")",[848,1346,1196],{"class":919},[848,1348,1251],{"class":932},[848,1350,1162],{"class":858},[848,1352,1354,1357,1359,1362,1364,1366,1369,1372,1374,1377,1380,1383,1386],{"class":850,"line":1353},31,[848,1355,1356],{"class":932},"      url",[848,1358,936],{"class":858},[848,1360,1361],{"class":858}," `${",[848,1363,1257],{"class":865},[848,1365,1260],{"class":858},[848,1367,1368],{"class":865},"endpoint ",[848,1370,1371],{"class":858},"??",[848,1373,900],{"class":858},[848,1375,1376],{"class":903},"https:\u002F\u002Fapi.myservice.com",[848,1378,1379],{"class":858},"'}",[848,1381,1382],{"class":903},"\u002Fv1\u002Fingest",[848,1384,1385],{"class":858},"`",[848,1387,869],{"class":858},[848,1389,1391,1394,1396],{"class":850,"line":1390},32,[848,1392,1393],{"class":932},"      headers",[848,1395,936],{"class":858},[848,1397,859],{"class":858},[848,1399,1401,1404,1407,1409,1411,1413,1416,1418],{"class":850,"line":1400},33,[848,1402,1403],{"class":858},"        '",[848,1405,1406],{"class":932},"Content-Type",[848,1408,1021],{"class":858},[848,1410,936],{"class":858},[848,1412,900],{"class":858},[848,1414,1415],{"class":903},"application\u002Fjson",[848,1417,1021],{"class":858},[848,1419,869],{"class":858},[848,1421,1423,1426,1428,1431,1434,1437,1439,1441,1443,1446],{"class":850,"line":1422},34,[848,1424,1425],{"class":932},"        Authorization",[848,1427,936],{"class":858},[848,1429,1430],{"class":858}," `",[848,1432,1433],{"class":903},"Bearer ",[848,1435,1436],{"class":858},"${",[848,1438,1257],{"class":865},[848,1440,1260],{"class":858},[848,1442,751],{"class":865},[848,1444,1445],{"class":858},"}`",[848,1447,869],{"class":858},[848,1449,1451],{"class":850,"line":1450},35,[848,1452,1453],{"class":858},"      },\n",[848,1455,1457,1460,1462,1465,1467,1470,1472,1474,1476],{"class":850,"line":1456},36,[848,1458,1459],{"class":932},"      body",[848,1461,936],{"class":858},[848,1463,1464],{"class":865}," JSON",[848,1466,1260],{"class":858},[848,1468,1469],{"class":1120},"stringify",[848,1471,1124],{"class":932},[848,1473,1337],{"class":865},[848,1475,1344],{"class":932},[848,1477,869],{"class":858},[848,1479,1481,1484,1486],{"class":850,"line":1480},37,[848,1482,1483],{"class":858},"    }",[848,1485,1344],{"class":932},[848,1487,869],{"class":858},[848,1489,1491,1494],{"class":850,"line":1490},38,[848,1492,1493],{"class":858},"  }",[848,1495,1242],{"class":932},[848,1497,1499],{"class":850,"line":1498},39,[848,1500,967],{"class":858},[619,1502,1503,1504,1506,1507,1510,1511,1514,1515,1519,1520,1523],{},"That's it. ",[661,1505,672],{}," handles retries (default 2), timeouts (default 5000ms), error isolation, and the identity headers (",[661,1508,1509],{},"User-Agent: evlog\u002F\u003Cversion>"," + ",[661,1512,1513],{},"X-Evlog-Source: \u003Cname>","). Your app pipeline keeps running even if your destination is down, and when you wrap the drain in ",[628,1516,1517],{"href":545},[661,1518,799],{},", the pipeline takes over retries through the drain's ",[661,1521,1522],{},"raw"," variant.",[1525,1526,1528],"h3",{"id":1527},"a-5-minute-example-internal-loki-drain","A 5-minute example: internal Loki drain",[619,1530,1531],{},"A complete working drain in 25 lines, with no external config helper:",[838,1533,1538],{"className":1534,"code":1535,"filename":1536,"language":1537,"meta":844,"style":844},"language-ts shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { defineHttpDrain } from 'evlog\u002Ftoolkit'\n\nexport function createLokiDrain(overrides?: { url?: string, token?: string }) {\n  return defineHttpDrain\u003C{ url: string, token: string }>({\n    name: 'loki',\n    resolve: () => ({\n      url: overrides?.url ?? process.env.LOKI_URL!,\n      token: overrides?.token ?? process.env.LOKI_TOKEN!,\n    }),\n    encode: (events, config) => ({\n      url: `${config.url}\u002Floki\u002Fapi\u002Fv1\u002Fpush`,\n      headers: {\n        'Content-Type': 'application\u002Fjson',\n        Authorization: `Bearer ${config.token}`,\n      },\n      body: JSON.stringify({\n        streams: events.map(e => ({\n          stream: { service: e.service, level: e.level },\n          values: [[String(Date.parse(e.timestamp) * 1e6), JSON.stringify(e)]],\n        })),\n      }),\n    }),\n  })\n}\n","lib\u002Floki-drain.ts","ts",[661,1539,1540,1560,1564,1603,1633,1648,1662,1695,1724,1732,1755,1778,1786,1804,1826,1830,1846,1871,1909,1969,1979,1988,1996,2002],{"__ignoreMap":844},[848,1541,1542,1544,1547,1549,1552,1554,1556,1558],{"class":850,"line":851},[848,1543,855],{"class":854},[848,1545,1546],{"class":858}," {",[848,1548,1151],{"class":865},[848,1550,1551],{"class":858}," }",[848,1553,897],{"class":854},[848,1555,900],{"class":858},[848,1557,691],{"class":903},[848,1559,906],{"class":858},[848,1561,1562],{"class":850,"line":862},[848,1563,913],{"emptyLinePlaceholder":912},[848,1565,1566,1568,1570,1573,1575,1577,1579,1581,1584,1586,1589,1591,1594,1596,1598,1601],{"class":850,"line":872},[848,1567,1114],{"class":854},[848,1569,1117],{"class":919},[848,1571,1572],{"class":1120}," createLokiDrain",[848,1574,1124],{"class":858},[848,1576,1128],{"class":1127},[848,1578,948],{"class":858},[848,1580,1546],{"class":858},[848,1582,1583],{"class":932}," url",[848,1585,948],{"class":858},[848,1587,1588],{"class":923}," string",[848,1590,1024],{"class":858},[848,1592,1593],{"class":932}," token",[848,1595,948],{"class":858},[848,1597,1588],{"class":923},[848,1599,1600],{"class":858}," 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}>",[848,1630,1124],{"class":932},[848,1632,1162],{"class":858},[848,1634,1635,1637,1639,1641,1644,1646],{"class":850,"line":891},[848,1636,1168],{"class":932},[848,1638,936],{"class":858},[848,1640,900],{"class":858},[848,1642,1643],{"class":903},"loki",[848,1645,1021],{"class":858},[848,1647,869],{"class":858},[848,1649,1650,1652,1654,1656,1658,1660],{"class":850,"line":909},[848,1651,1185],{"class":1120},[848,1653,936],{"class":858},[848,1655,1193],{"class":858},[848,1657,1196],{"class":919},[848,1659,1251],{"class":932},[848,1661,1162],{"class":858},[848,1663,1664,1666,1668,1670,1673,1676,1679,1682,1684,1687,1689,1692],{"class":850,"line":916},[848,1665,1356],{"class":932},[848,1667,936],{"class":858},[848,1669,1239],{"class":865},[848,1671,1672],{"class":858},"?.",[848,1674,1675],{"class":865},"url",[848,1677,1678],{"class":858}," ??",[848,1680,1681],{"class":865}," process",[848,1683,1260],{"class":858},[848,1685,1686],{"class":865},"env",[848,1688,1260],{"class":858},[848,1690,1691],{"class":865},"LOKI_URL",[848,1693,1694],{"class":858},"!,\n",[848,1696,1697,1700,1702,1704,1706,1709,1711,1713,1715,1717,1719,1722],{"class":850,"line":929},[848,1698,1699],{"class":932},"      token",[848,1701,936],{"class":858},[848,1703,1239],{"class":865},[848,1705,1672],{"class":858},[848,1707,1708],{"class":865},"token",[848,1710,1678],{"class":858},[848,1712,1681],{"class":865},[848,1714,1260],{"class":858},[848,1716,1686],{"class":865},[848,1718,1260],{"class":858},[848,1720,1721],{"class":865},"LOKI_TOKEN",[848,1723,1694],{"class":858},[848,1725,1726,1728,1730],{"class":850,"line":942},[848,1727,1483],{"class":858},[848,1729,1344],{"class":932},[848,1731,869],{"class":858},[848,1733,1734,1736,1738,1740,1742,1744,1747,1749,1751,1753],{"class":850,"line":953},[848,1735,1330],{"class":1120},[848,1737,936],{"class":858},[848,1739,1251],{"class":858},[848,1741,1337],{"class":1127},[848,1743,1024],{"class":858},[848,1745,1746],{"class":1127}," config",[848,1748,1344],{"class":858},[848,1750,1196],{"class":919},[848,1752,1251],{"class":932},[848,1754,1162],{"class":858},[848,1756,1757,1759,1761,1763,1765,1767,1769,1771,1774,1776],{"class":850,"line":964},[848,1758,1356],{"class":932},[848,1760,936],{"class":858},[848,1762,1361],{"class":858},[848,1764,104],{"class":865},[848,1766,1260],{"class":858},[848,1768,1675],{"class":865},[848,1770,894],{"class":858},[848,1772,1773],{"class":903},"\u002Floki\u002Fapi\u002Fv1\u002Fpush",[848,1775,1385],{"class":858},[848,1777,869],{"class":858},[848,1779,1780,1782,1784],{"class":850,"line":970},[848,1781,1393],{"class":932},[848,1783,936],{"class":858},[848,1785,859],{"class":858},[848,1787,1788,1790,1792,1794,1796,1798,1800,1802],{"class":850,"line":975},[848,1789,1403],{"class":858},[848,1791,1406],{"class":932},[848,1793,1021],{"class":858},[848,1795,936],{"class":858},[848,1797,900],{"class":858},[848,1799,1415],{"class":903},[848,1801,1021],{"class":858},[848,1803,869],{"class":858},[848,1805,1806,1808,1810,1812,1814,1816,1818,1820,1822,1824],{"class":850,"line":1006},[848,1807,1425],{"class":932},[848,1809,936],{"class":858},[848,1811,1430],{"class":858},[848,1813,1433],{"class":903},[848,1815,1436],{"class":858},[848,1817,104],{"class":865},[848,1819,1260],{"class":858},[848,1821,1708],{"class":865},[848,1823,1445],{"class":858},[848,1825,869],{"class":858},[848,1827,1828],{"class":850,"line":1048},[848,1829,1453],{"class":858},[848,1831,1832,1834,1836,1838,1840,1842,1844],{"class":850,"line":1082},[848,1833,1459],{"class":932},[848,1835,936],{"class":858},[848,1837,1464],{"class":865},[848,1839,1260],{"class":858},[848,1841,1469],{"class":1120},[848,1843,1124],{"class":932},[848,1845,1162],{"class":858},[848,1847,1848,1851,1853,1856,1858,1860,1862,1865,1867,1869],{"class":850,"line":1100},[848,1849,1850],{"class":932}," 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level",[848,1899,936],{"class":858},[848,1901,1887],{"class":865},[848,1903,1260],{"class":858},[848,1905,1906],{"class":865},"level",[848,1908,1097],{"class":858},[848,1910,1911,1914,1916,1919,1922,1924,1927,1929,1932,1934,1936,1938,1941,1943,1946,1950,1952,1954,1956,1958,1960,1962,1964,1967],{"class":850,"line":1111},[848,1912,1913],{"class":932},"          values",[848,1915,936],{"class":858},[848,1917,1918],{"class":932}," [[",[848,1920,1921],{"class":1120},"String",[848,1923,1124],{"class":932},[848,1925,1926],{"class":865},"Date",[848,1928,1260],{"class":858},[848,1930,1931],{"class":1120},"parse",[848,1933,1124],{"class":932},[848,1935,1864],{"class":865},[848,1937,1260],{"class":858},[848,1939,1940],{"class":865},"timestamp",[848,1942,1265],{"class":932},[848,1944,1945],{"class":858},"*",[848,1947,1949],{"class":1948},"sbssI"," 1e6",[848,1951,1344],{"class":932},[848,1953,1024],{"class":858},[848,1955,1464],{"class":865},[848,1957,1260],{"class":858},[848,1959,1469],{"class":1120},[848,1961,1124],{"class":932},[848,1963,1864],{"class":865},[848,1965,1966],{"class":932},")]]",[848,1968,869],{"class":858},[848,1970,1971,1974,1977],{"class":850,"line":1145},[848,1972,1973],{"class":858},"        }",[848,1975,1976],{"class":932},"))",[848,1978,869],{"class":858},[848,1980,1981,1984,1986],{"class":850,"line":1165},[848,1982,1983],{"class":858},"      }",[848,1985,1344],{"class":932},[848,1987,869],{"class":858},[848,1989,1990,1992,1994],{"class":850,"line":1182},[848,1991,1483],{"class":858},[848,1993,1344],{"class":932},[848,1995,869],{"class":858},[848,1997,1998,2000],{"class":850,"line":1201},[848,1999,1493],{"class":858},[848,2001,1242],{"class":932},[848,2003,2004],{"class":850,"line":1245},[848,2005,967],{"class":858},[815,2007,2009],{"id":2008},"know-which-config-wins","Know which config wins",[619,2011,2012,2014],{},[661,2013,740],{}," walks the standard chain so users get the same configuration UX as built-in adapters:",[2016,2017,2018,2024,2030,2036],"ol",{},[706,2019,2020,2021,2023],{},"Explicit ",[661,2022,1128],{}," passed to your factory",[706,2025,2026,2029],{},[661,2027,2028],{},"runtimeConfig.evlog.\u003Cnamespace>"," (Nuxt\u002FNitro)",[706,2031,2032,2035],{},[661,2033,2034],{},"runtimeConfig.\u003Cnamespace>"," (legacy Nuxt\u002FNitro)",[706,2037,2038,2041,2042,2045,2046,2049,2050,2052,2053,1344],{},[661,2039,2040],{},"\u003CNS>_\u003CFIELD>"," env vars (list ",[661,2043,2044],{},"NUXT_\u003CNS>_\u003CFIELD>"," in ",[661,2047,2048],{},"ConfigField.env"," for silent Nuxt compat; show only ",[661,2051,2040],{}," in error messages via ",[661,2054,2055],{},"formatPublicEnvKeys",[619,2057,2058,2059,760,2061,760,2063,760,2065,2067,2068,2070,2071,2073,2074,2077,2078,2081,2082,2085],{},"Field names should follow the project conventions: ",[661,2060,751],{},[661,2062,755],{},[661,2064,759],{},[661,2066,763],{},". If you're renaming an existing field (e.g. ",[661,2069,1708],{}," → ",[661,2072,751],{},"), keep both as ",[661,2075,2076],{},"ConfigField"," entries for one major version. See ",[661,2079,2080],{},"axiom.ts"," and ",[661,2083,2084],{},"better-stack.ts"," for the deprecation pattern.",[815,2087,2089],{"id":2088},"wire-the-drain-into-your-framework","Wire the drain into your framework",[619,2091,2092,2093,2096],{},"Once ",[661,2094,2095],{},"createMyServiceDrain()"," returns the drain, wire it like any other:",[2098,2099,2100,2207,2322,2444,2532,2644,2744,2823,2897,2934,3008,3040,3125,3199],"framework-tabs",{},[838,2101,2104],{"className":840,"code":2102,"filename":250,"language":843,"meta":2103,"style":844},"import { createMyServiceDrain } from '~\u002Fserver\u002Futils\u002Fmy-drain'\n\nconst drain = createMyServiceDrain()\n\nexport default defineNitroPlugin((nitroApp) => {\n  nitroApp.hooks.hook('evlog:drain', drain)\n})\n","server\u002Fplugins\u002Fevlog-drain.ts",[661,2105,2106,2125,2129,2143,2147,2170,2201],{"__ignoreMap":844},[848,2107,2108,2110,2112,2114,2116,2118,2120,2123],{"class":850,"line":851},[848,2109,855],{"class":854},[848,2111,1546],{"class":858},[848,2113,1121],{"class":865},[848,2115,1551],{"class":858},[848,2117,897],{"class":854},[848,2119,900],{"class":858},[848,2121,2122],{"class":903},"~\u002Fserver\u002Futils\u002Fmy-drain",[848,2124,906],{"class":858},[848,2126,2127],{"class":850,"line":862},[848,2128,913],{"emptyLinePlaceholder":912},[848,2130,2131,2133,2136,2138,2140],{"class":850,"line":872},[848,2132,978],{"class":919},[848,2134,2135],{"class":865}," drain ",[848,2137,1000],{"class":858},[848,2139,1121],{"class":1120},[848,2141,2142],{"class":865},"()\n",[848,2144,2145],{"class":850,"line":880},[848,2146,913],{"emptyLinePlaceholder":912},[848,2148,2149,2151,2154,2157,2159,2161,2164,2166,2168],{"class":850,"line":891},[848,2150,1114],{"class":854},[848,2152,2153],{"class":854}," default",[848,2155,2156],{"class":1120}," defineNitroPlugin",[848,2158,1124],{"class":865},[848,2160,1124],{"class":858},[848,2162,2163],{"class":1127},"nitroApp",[848,2165,1344],{"class":858},[848,2167,1196],{"class":919},[848,2169,859],{"class":858},[848,2171,2172,2175,2177,2180,2182,2185,2187,2189,2192,2194,2196,2199],{"class":850,"line":909},[848,2173,2174],{"class":865},"  nitroApp",[848,2176,1260],{"class":858},[848,2178,2179],{"class":865},"hooks",[848,2181,1260],{"class":858},[848,2183,2184],{"class":1120},"hook",[848,2186,1124],{"class":932},[848,2188,1021],{"class":858},[848,2190,2191],{"class":903},"evlog:drain",[848,2193,1021],{"class":858},[848,2195,1024],{"class":858},[848,2197,2198],{"class":865}," drain",[848,2200,1242],{"class":932},[848,2202,2203,2205],{"class":850,"line":916},[848,2204,894],{"class":858},[848,2206,1242],{"class":865},[838,2208,2210],{"className":840,"code":2209,"filename":265,"language":843,"meta":2103,"style":844},"import { definePlugin } from 'nitro'\nimport { createMyServiceDrain } from '~\u002Fserver\u002Futils\u002Fmy-drain'\n\nconst drain = createMyServiceDrain()\n\nexport default definePlugin((nitroApp) => {\n  nitroApp.hooks.hook('evlog:drain', drain)\n})\n",[661,2211,2212,2232,2250,2254,2266,2270,2290,2316],{"__ignoreMap":844},[848,2213,2214,2216,2218,2221,2223,2225,2227,2230],{"class":850,"line":851},[848,2215,855],{"class":854},[848,2217,1546],{"class":858},[848,2219,2220],{"class":865}," definePlugin",[848,2222,1551],{"class":858},[848,2224,897],{"class":854},[848,2226,900],{"class":858},[848,2228,2229],{"class":903},"nitro",[848,2231,906],{"class":858},[848,2233,2234,2236,2238,2240,2242,2244,2246,2248],{"class":850,"line":862},[848,2235,855],{"class":854},[848,2237,1546],{"class":858},[848,2239,1121],{"class":865},[848,2241,1551],{"class":858},[848,2243,897],{"class":854},[848,2245,900],{"class":858},[848,2247,2122],{"class":903},[848,2249,906],{"class":858},[848,2251,2252],{"class":850,"line":872},[848,2253,913],{"emptyLinePlaceholder":912},[848,2255,2256,2258,2260,2262,2264],{"class":850,"line":880},[848,2257,978],{"class":919},[848,2259,2135],{"class":865},[848,2261,1000],{"class":858},[848,2263,1121],{"class":1120},[848,2265,2142],{"class":865},[848,2267,2268],{"class":850,"line":891},[848,2269,913],{"emptyLinePlaceholder":912},[848,2271,2272,2274,2276,2278,2280,2282,2284,2286,2288],{"class":850,"line":909},[848,2273,1114],{"class":854},[848,2275,2153],{"class":854},[848,2277,2220],{"class":1120},[848,2279,1124],{"class":865},[848,2281,1124],{"class":858},[848,2283,2163],{"class":1127},[848,2285,1344],{"class":858},[848,2287,1196],{"class":919},[848,2289,859],{"class":858},[848,2291,2292,2294,2296,2298,2300,2302,2304,2306,2308,2310,2312,2314],{"class":850,"line":916},[848,2293,2174],{"class":865},[848,2295,1260],{"class":858},[848,2297,2179],{"class":865},[848,2299,1260],{"class":858},[848,2301,2184],{"class":1120},[848,2303,1124],{"class":932},[848,2305,1021],{"class":858},[848,2307,2191],{"class":903},[848,2309,1021],{"class":858},[848,2311,1024],{"class":858},[848,2313,2198],{"class":865},[848,2315,1242],{"class":932},[848,2317,2318,2320],{"class":850,"line":929},[848,2319,894],{"class":858},[848,2321,1242],{"class":865},[838,2323,2326],{"className":840,"code":2324,"filename":255,"language":843,"meta":2325,"style":844},"import { createEvlog } from 'evlog\u002Fnext'\nimport { createMyServiceDrain } from '.\u002Fmy-drain'\n\nexport const { withEvlog, useLogger, log, createError } = createEvlog({\n  service: 'my-app',\n  drain: createMyServiceDrain(),\n})\n","lib\u002Fevlog.ts",[661,2327,2328,2348,2367,2371,2408,2424,2438],{"__ignoreMap":844},[848,2329,2330,2332,2334,2337,2339,2341,2343,2346],{"class":850,"line":851},[848,2331,855],{"class":854},[848,2333,1546],{"class":858},[848,2335,2336],{"class":865}," createEvlog",[848,2338,1551],{"class":858},[848,2340,897],{"class":854},[848,2342,900],{"class":858},[848,2344,2345],{"class":903},"evlog\u002Fnext",[848,2347,906],{"class":858},[848,2349,2350,2352,2354,2356,2358,2360,2362,2365],{"class":850,"line":862},[848,2351,855],{"class":854},[848,2353,1546],{"class":858},[848,2355,1121],{"class":865},[848,2357,1551],{"class":858},[848,2359,897],{"class":854},[848,2361,900],{"class":858},[848,2363,2364],{"class":903},".\u002Fmy-drain",[848,2366,906],{"class":858},[848,2368,2369],{"class":850,"line":872},[848,2370,913],{"emptyLinePlaceholder":912},[848,2372,2373,2375,2378,2380,2383,2385,2388,2390,2393,2395,2398,2400,2402,2404,2406],{"class":850,"line":880},[848,2374,1114],{"class":854},[848,2376,2377],{"class":919}," const",[848,2379,1546],{"class":858},[848,2381,2382],{"class":865}," withEvlog",[848,2384,1024],{"class":858},[848,2386,2387],{"class":865}," useLogger",[848,2389,1024],{"class":858},[848,2391,2392],{"class":865}," log",[848,2394,1024],{"class":858},[848,2396,2397],{"class":865}," createError ",[848,2399,894],{"class":858},[848,2401,1210],{"class":858},[848,2403,2336],{"class":1120},[848,2405,1124],{"class":865},[848,2407,1162],{"class":858},[848,2409,2410,2413,2415,2417,2420,2422],{"class":850,"line":891},[848,2411,2412],{"class":932},"  service",[848,2414,936],{"class":858},[848,2416,900],{"class":858},[848,2418,2419],{"class":903},"my-app",[848,2421,1021],{"class":858},[848,2423,869],{"class":858},[848,2425,2426,2429,2431,2433,2436],{"class":850,"line":909},[848,2427,2428],{"class":932},"  drain",[848,2430,936],{"class":858},[848,2432,1121],{"class":1120},[848,2434,2435],{"class":865},"()",[848,2437,869],{"class":858},[848,2439,2440,2442],{"class":850,"line":916},[848,2441,894],{"class":858},[848,2443,1242],{"class":865},[838,2445,2448],{"className":840,"code":2446,"filename":260,"language":843,"meta":2447,"style":844},"import { createEvlogHooks } from 'evlog\u002Fsveltekit'\nimport { createMyServiceDrain } from '.\u002Fmy-drain'\n\nexport const { handle, handleError } = createEvlogHooks({ drain: createMyServiceDrain() })\n","src\u002Fhooks.server.ts",[661,2449,2450,2470,2488,2492],{"__ignoreMap":844},[848,2451,2452,2454,2456,2459,2461,2463,2465,2468],{"class":850,"line":851},[848,2453,855],{"class":854},[848,2455,1546],{"class":858},[848,2457,2458],{"class":865}," createEvlogHooks",[848,2460,1551],{"class":858},[848,2462,897],{"class":854},[848,2464,900],{"class":858},[848,2466,2467],{"class":903},"evlog\u002Fsveltekit",[848,2469,906],{"class":858},[848,2471,2472,2474,2476,2478,2480,2482,2484,2486],{"class":850,"line":862},[848,2473,855],{"class":854},[848,2475,1546],{"class":858},[848,2477,1121],{"class":865},[848,2479,1551],{"class":858},[848,2481,897],{"class":854},[848,2483,900],{"class":858},[848,2485,2364],{"class":903},[848,2487,906],{"class":858},[848,2489,2490],{"class":850,"line":872},[848,2491,913],{"emptyLinePlaceholder":912},[848,2493,2494,2496,2498,2500,2503,2505,2508,2510,2512,2514,2516,2519,2521,2523,2525,2528,2530],{"class":850,"line":880},[848,2495,1114],{"class":854},[848,2497,2377],{"class":919},[848,2499,1546],{"class":858},[848,2501,2502],{"class":865}," handle",[848,2504,1024],{"class":858},[848,2506,2507],{"class":865}," handleError ",[848,2509,894],{"class":858},[848,2511,1210],{"class":858},[848,2513,2458],{"class":1120},[848,2515,1124],{"class":865},[848,2517,2518],{"class":858},"{",[848,2520,2198],{"class":932},[848,2522,936],{"class":858},[848,2524,1121],{"class":1120},[848,2526,2527],{"class":865},"() ",[848,2529,894],{"class":858},[848,2531,1242],{"class":865},[838,2533,2534],{"className":840,"code":2209,"filename":270,"language":843,"meta":2103,"style":844},[661,2535,2536,2554,2572,2576,2588,2592,2612,2638],{"__ignoreMap":844},[848,2537,2538,2540,2542,2544,2546,2548,2550,2552],{"class":850,"line":851},[848,2539,855],{"class":854},[848,2541,1546],{"class":858},[848,2543,2220],{"class":865},[848,2545,1551],{"class":858},[848,2547,897],{"class":854},[848,2549,900],{"class":858},[848,2551,2229],{"class":903},[848,2553,906],{"class":858},[848,2555,2556,2558,2560,2562,2564,2566,2568,2570],{"class":850,"line":862},[848,2557,855],{"class":854},[848,2559,1546],{"class":858},[848,2561,1121],{"class":865},[848,2563,1551],{"class":858},[848,2565,897],{"class":854},[848,2567,900],{"class":858},[848,2569,2122],{"class":903},[848,2571,906],{"class":858},[848,2573,2574],{"class":850,"line":872},[848,2575,913],{"emptyLinePlaceholder":912},[848,2577,2578,2580,2582,2584,2586],{"class":850,"line":880},[848,2579,978],{"class":919},[848,2581,2135],{"class":865},[848,2583,1000],{"class":858},[848,2585,1121],{"class":1120},[848,2587,2142],{"class":865},[848,2589,2590],{"class":850,"line":891},[848,2591,913],{"emptyLinePlaceholder":912},[848,2593,2594,2596,2598,2600,2602,2604,2606,2608,2610],{"class":850,"line":909},[848,2595,1114],{"class":854},[848,2597,2153],{"class":854},[848,2599,2220],{"class":1120},[848,2601,1124],{"class":865},[848,2603,1124],{"class":858},[848,2605,2163],{"class":1127},[848,2607,1344],{"class":858},[848,2609,1196],{"class":919},[848,2611,859],{"class":858},[848,2613,2614,2616,2618,2620,2622,2624,2626,2628,2630,2632,2634,2636],{"class":850,"line":916},[848,2615,2174],{"class":865},[848,2617,1260],{"class":858},[848,2619,2179],{"class":865},[848,2621,1260],{"class":858},[848,2623,2184],{"class":1120},[848,2625,1124],{"class":932},[848,2627,1021],{"class":858},[848,2629,2191],{"class":903},[848,2631,1021],{"class":858},[848,2633,1024],{"class":858},[848,2635,2198],{"class":865},[848,2637,1242],{"class":932},[848,2639,2640,2642],{"class":850,"line":929},[848,2641,894],{"class":858},[848,2643,1242],{"class":865},[838,2645,2648],{"className":840,"code":2646,"filename":300,"language":843,"meta":2647,"style":844},"import { evlog } from 'evlog\u002Freact-router'\nimport { createMyServiceDrain } from '.\u002Fmy-drain'\n\nexport const middleware: Route.MiddlewareFunction[] = [\n  evlog({ drain: createMyServiceDrain() }),\n]\n","app\u002Froot.tsx",[661,2649,2650,2670,2688,2692,2717,2740],{"__ignoreMap":844},[848,2651,2652,2654,2656,2659,2661,2663,2665,2668],{"class":850,"line":851},[848,2653,855],{"class":854},[848,2655,1546],{"class":858},[848,2657,2658],{"class":865}," evlog",[848,2660,1551],{"class":858},[848,2662,897],{"class":854},[848,2664,900],{"class":858},[848,2666,2667],{"class":903},"evlog\u002Freact-router",[848,2669,906],{"class":858},[848,2671,2672,2674,2676,2678,2680,2682,2684,2686],{"class":850,"line":862},[848,2673,855],{"class":854},[848,2675,1546],{"class":858},[848,2677,1121],{"class":865},[848,2679,1551],{"class":858},[848,2681,897],{"class":854},[848,2683,900],{"class":858},[848,2685,2364],{"class":903},[848,2687,906],{"class":858},[848,2689,2690],{"class":850,"line":872},[848,2691,913],{"emptyLinePlaceholder":912},[848,2693,2694,2696,2698,2701,2703,2706,2708,2711,2713,2715],{"class":850,"line":880},[848,2695,1114],{"class":854},[848,2697,2377],{"class":919},[848,2699,2700],{"class":865}," middleware",[848,2702,936],{"class":858},[848,2704,2705],{"class":923}," Route",[848,2707,1260],{"class":858},[848,2709,2710],{"class":923},"MiddlewareFunction",[848,2712,997],{"class":865},[848,2714,1000],{"class":858},[848,2716,1003],{"class":865},[848,2718,2719,2722,2724,2726,2728,2730,2732,2734,2736,2738],{"class":850,"line":891},[848,2720,2721],{"class":1120},"  evlog",[848,2723,1124],{"class":865},[848,2725,2518],{"class":858},[848,2727,2198],{"class":932},[848,2729,936],{"class":858},[848,2731,1121],{"class":1120},[848,2733,2527],{"class":865},[848,2735,894],{"class":858},[848,2737,1344],{"class":865},[848,2739,869],{"class":858},[848,2741,2742],{"class":850,"line":909},[848,2743,1103],{"class":865},[838,2745,2748],{"className":840,"code":2746,"filename":285,"language":843,"meta":2747,"style":844},"import { evlog } from 'evlog\u002Fhono'\nimport { createMyServiceDrain } from '.\u002Fmy-drain'\n\napp.use(evlog({ drain: createMyServiceDrain() }))\n","src\u002Findex.ts",[661,2749,2750,2769,2787,2791],{"__ignoreMap":844},[848,2751,2752,2754,2756,2758,2760,2762,2764,2767],{"class":850,"line":851},[848,2753,855],{"class":854},[848,2755,1546],{"class":858},[848,2757,2658],{"class":865},[848,2759,1551],{"class":858},[848,2761,897],{"class":854},[848,2763,900],{"class":858},[848,2765,2766],{"class":903},"evlog\u002Fhono",[848,2768,906],{"class":858},[848,2770,2771,2773,2775,2777,2779,2781,2783,2785],{"class":850,"line":862},[848,2772,855],{"class":854},[848,2774,1546],{"class":858},[848,2776,1121],{"class":865},[848,2778,1551],{"class":858},[848,2780,897],{"class":854},[848,2782,900],{"class":858},[848,2784,2364],{"class":903},[848,2786,906],{"class":858},[848,2788,2789],{"class":850,"line":872},[848,2790,913],{"emptyLinePlaceholder":912},[848,2792,2793,2796,2798,2801,2803,2806,2808,2810,2812,2814,2816,2818,2820],{"class":850,"line":880},[848,2794,2795],{"class":865},"app",[848,2797,1260],{"class":858},[848,2799,2800],{"class":1120},"use",[848,2802,1124],{"class":865},[848,2804,2805],{"class":1120},"evlog",[848,2807,1124],{"class":865},[848,2809,2518],{"class":858},[848,2811,2198],{"class":932},[848,2813,936],{"class":858},[848,2815,1121],{"class":1120},[848,2817,2527],{"class":865},[848,2819,894],{"class":858},[848,2821,2822],{"class":865},"))\n",[838,2824,2826],{"className":840,"code":2825,"filename":280,"language":843,"meta":2747,"style":844},"import { evlog } from 'evlog\u002Fexpress'\nimport { createMyServiceDrain } from '.\u002Fmy-drain'\n\napp.use(evlog({ drain: createMyServiceDrain() }))\n",[661,2827,2828,2847,2865,2869],{"__ignoreMap":844},[848,2829,2830,2832,2834,2836,2838,2840,2842,2845],{"class":850,"line":851},[848,2831,855],{"class":854},[848,2833,1546],{"class":858},[848,2835,2658],{"class":865},[848,2837,1551],{"class":858},[848,2839,897],{"class":854},[848,2841,900],{"class":858},[848,2843,2844],{"class":903},"evlog\u002Fexpress",[848,2846,906],{"class":858},[848,2848,2849,2851,2853,2855,2857,2859,2861,2863],{"class":850,"line":862},[848,2850,855],{"class":854},[848,2852,1546],{"class":858},[848,2854,1121],{"class":865},[848,2856,1551],{"class":858},[848,2858,897],{"class":854},[848,2860,900],{"class":858},[848,2862,2364],{"class":903},[848,2864,906],{"class":858},[848,2866,2867],{"class":850,"line":872},[848,2868,913],{"emptyLinePlaceholder":912},[848,2870,2871,2873,2875,2877,2879,2881,2883,2885,2887,2889,2891,2893,2895],{"class":850,"line":880},[848,2872,2795],{"class":865},[848,2874,1260],{"class":858},[848,2876,2800],{"class":1120},[848,2878,1124],{"class":865},[848,2880,2805],{"class":1120},[848,2882,1124],{"class":865},[848,2884,2518],{"class":858},[848,2886,2198],{"class":932},[848,2888,936],{"class":858},[848,2890,1121],{"class":1120},[848,2892,2527],{"class":865},[848,2894,894],{"class":858},[848,2896,2822],{"class":865},[838,2898,2900],{"className":840,"code":2899,"filename":290,"language":843,"meta":2747,"style":844},"await app.register(evlog, { drain: createMyServiceDrain() })\n",[661,2901,2902],{"__ignoreMap":844},[848,2903,2904,2907,2910,2912,2915,2918,2920,2922,2924,2926,2928,2930,2932],{"class":850,"line":851},[848,2905,2906],{"class":854},"await",[848,2908,2909],{"class":865}," app",[848,2911,1260],{"class":858},[848,2913,2914],{"class":1120},"register",[848,2916,2917],{"class":865},"(evlog",[848,2919,1024],{"class":858},[848,2921,1546],{"class":858},[848,2923,2198],{"class":932},[848,2925,936],{"class":858},[848,2927,1121],{"class":1120},[848,2929,2527],{"class":865},[848,2931,894],{"class":858},[848,2933,1242],{"class":865},[838,2935,2937],{"className":840,"code":2936,"filename":295,"language":843,"meta":2747,"style":844},"import { evlog } from 'evlog\u002Felysia'\nimport { createMyServiceDrain } from '.\u002Fmy-drain'\n\napp.use(evlog({ drain: createMyServiceDrain() }))\n",[661,2938,2939,2958,2976,2980],{"__ignoreMap":844},[848,2940,2941,2943,2945,2947,2949,2951,2953,2956],{"class":850,"line":851},[848,2942,855],{"class":854},[848,2944,1546],{"class":858},[848,2946,2658],{"class":865},[848,2948,1551],{"class":858},[848,2950,897],{"class":854},[848,2952,900],{"class":858},[848,2954,2955],{"class":903},"evlog\u002Felysia",[848,2957,906],{"class":858},[848,2959,2960,2962,2964,2966,2968,2970,2972,2974],{"class":850,"line":862},[848,2961,855],{"class":854},[848,2963,1546],{"class":858},[848,2965,1121],{"class":865},[848,2967,1551],{"class":858},[848,2969,897],{"class":854},[848,2971,900],{"class":858},[848,2973,2364],{"class":903},[848,2975,906],{"class":858},[848,2977,2978],{"class":850,"line":872},[848,2979,913],{"emptyLinePlaceholder":912},[848,2981,2982,2984,2986,2988,2990,2992,2994,2996,2998,3000,3002,3004,3006],{"class":850,"line":880},[848,2983,2795],{"class":865},[848,2985,1260],{"class":858},[848,2987,2800],{"class":1120},[848,2989,1124],{"class":865},[848,2991,2805],{"class":1120},[848,2993,1124],{"class":865},[848,2995,2518],{"class":858},[848,2997,2198],{"class":932},[848,2999,936],{"class":858},[848,3001,1121],{"class":1120},[848,3003,2527],{"class":865},[848,3005,894],{"class":858},[848,3007,2822],{"class":865},[838,3009,3012],{"className":840,"code":3010,"filename":275,"language":843,"meta":3011,"style":844},"EvlogModule.forRoot({ drain: createMyServiceDrain() })\n","src\u002Fapp.module.ts",[661,3013,3014],{"__ignoreMap":844},[848,3015,3016,3019,3021,3024,3026,3028,3030,3032,3034,3036,3038],{"class":850,"line":851},[848,3017,3018],{"class":865},"EvlogModule",[848,3020,1260],{"class":858},[848,3022,3023],{"class":1120},"forRoot",[848,3025,1124],{"class":865},[848,3027,2518],{"class":858},[848,3029,2198],{"class":932},[848,3031,936],{"class":858},[848,3033,1121],{"class":1120},[848,3035,2527],{"class":865},[848,3037,894],{"class":858},[848,3039,1242],{"class":865},[838,3041,3044],{"className":840,"code":3042,"filename":319,"language":843,"meta":3043,"style":844},"import { withEvlog } from 'evlog\u002Forpc'\nimport { createMyServiceDrain } from '.\u002Fmy-drain'\n\nconst handler = withEvlog(new RPCHandler(router), { drain: createMyServiceDrain() })\n","server\u002Forpc.ts",[661,3045,3046,3065,3083,3087],{"__ignoreMap":844},[848,3047,3048,3050,3052,3054,3056,3058,3060,3063],{"class":850,"line":851},[848,3049,855],{"class":854},[848,3051,1546],{"class":858},[848,3053,2382],{"class":865},[848,3055,1551],{"class":858},[848,3057,897],{"class":854},[848,3059,900],{"class":858},[848,3061,3062],{"class":903},"evlog\u002Forpc",[848,3064,906],{"class":858},[848,3066,3067,3069,3071,3073,3075,3077,3079,3081],{"class":850,"line":862},[848,3068,855],{"class":854},[848,3070,1546],{"class":858},[848,3072,1121],{"class":865},[848,3074,1551],{"class":858},[848,3076,897],{"class":854},[848,3078,900],{"class":858},[848,3080,2364],{"class":903},[848,3082,906],{"class":858},[848,3084,3085],{"class":850,"line":872},[848,3086,913],{"emptyLinePlaceholder":912},[848,3088,3089,3091,3094,3096,3098,3100,3103,3106,3109,3111,3113,3115,3117,3119,3121,3123],{"class":850,"line":880},[848,3090,978],{"class":919},[848,3092,3093],{"class":865}," handler ",[848,3095,1000],{"class":858},[848,3097,2382],{"class":1120},[848,3099,1124],{"class":865},[848,3101,3102],{"class":858},"new",[848,3104,3105],{"class":1120}," RPCHandler",[848,3107,3108],{"class":865},"(router)",[848,3110,1024],{"class":858},[848,3112,1546],{"class":858},[848,3114,2198],{"class":932},[848,3116,936],{"class":858},[848,3118,1121],{"class":1120},[848,3120,2527],{"class":865},[848,3122,894],{"class":858},[848,3124,1242],{"class":865},[838,3126,3129],{"className":840,"code":3127,"filename":305,"language":843,"meta":3128,"style":844},"import { withEvlog } from 'evlog\u002Fworkers'\nimport { createMyServiceDrain } from '.\u002Fmy-drain'\n\nexport default withEvlog(handler, { drain: createMyServiceDrain() })\n","src\u002Fworker.ts",[661,3130,3131,3150,3168,3172],{"__ignoreMap":844},[848,3132,3133,3135,3137,3139,3141,3143,3145,3148],{"class":850,"line":851},[848,3134,855],{"class":854},[848,3136,1546],{"class":858},[848,3138,2382],{"class":865},[848,3140,1551],{"class":858},[848,3142,897],{"class":854},[848,3144,900],{"class":858},[848,3146,3147],{"class":903},"evlog\u002Fworkers",[848,3149,906],{"class":858},[848,3151,3152,3154,3156,3158,3160,3162,3164,3166],{"class":850,"line":862},[848,3153,855],{"class":854},[848,3155,1546],{"class":858},[848,3157,1121],{"class":865},[848,3159,1551],{"class":858},[848,3161,897],{"class":854},[848,3163,900],{"class":858},[848,3165,2364],{"class":903},[848,3167,906],{"class":858},[848,3169,3170],{"class":850,"line":872},[848,3171,913],{"emptyLinePlaceholder":912},[848,3173,3174,3176,3178,3180,3183,3185,3187,3189,3191,3193,3195,3197],{"class":850,"line":880},[848,3175,1114],{"class":854},[848,3177,2153],{"class":854},[848,3179,2382],{"class":1120},[848,3181,3182],{"class":865},"(handler",[848,3184,1024],{"class":858},[848,3186,1546],{"class":858},[848,3188,2198],{"class":932},[848,3190,936],{"class":858},[848,3192,1121],{"class":1120},[848,3194,2527],{"class":865},[848,3196,894],{"class":858},[848,3198,1242],{"class":865},[838,3200,3202],{"className":840,"code":3201,"filename":310,"language":843,"meta":844,"style":844},"import { initLogger } from 'evlog'\nimport { createMyServiceDrain } from '.\u002Fmy-drain'\n\ninitLogger({ drain: createMyServiceDrain() })\n",[661,3203,3204,3223,3241,3245],{"__ignoreMap":844},[848,3205,3206,3208,3210,3213,3215,3217,3219,3221],{"class":850,"line":851},[848,3207,855],{"class":854},[848,3209,1546],{"class":858},[848,3211,3212],{"class":865}," initLogger",[848,3214,1551],{"class":858},[848,3216,897],{"class":854},[848,3218,900],{"class":858},[848,3220,2805],{"class":903},[848,3222,906],{"class":858},[848,3224,3225,3227,3229,3231,3233,3235,3237,3239],{"class":850,"line":862},[848,3226,855],{"class":854},[848,3228,1546],{"class":858},[848,3230,1121],{"class":865},[848,3232,1551],{"class":858},[848,3234,897],{"class":854},[848,3236,900],{"class":858},[848,3238,2364],{"class":903},[848,3240,906],{"class":858},[848,3242,3243],{"class":850,"line":872},[848,3244,913],{"emptyLinePlaceholder":912},[848,3246,3247,3250,3252,3254,3256,3258,3260,3262,3264],{"class":850,"line":880},[848,3248,3249],{"class":1120},"initLogger",[848,3251,1124],{"class":865},[848,3253,2518],{"class":858},[848,3255,2198],{"class":932},[848,3257,936],{"class":858},[848,3259,1121],{"class":1120},[848,3261,2527],{"class":865},[848,3263,894],{"class":858},[848,3265,1242],{"class":865},[619,3267,3268,3269,3273],{},"For production, wrap it once in ",[628,3270,3271],{"href":545},[661,3272,799],{}," so events are batched and retried.",[815,3275,3277],{"id":3276},"filter-or-transform-before-sending","Filter or transform before sending",[619,3279,3280,3282,3283,3286,3287,3289],{},[661,3281,832],{}," receives the full batch of ",[661,3284,3285],{},"WideEvent[]"," plus the resolved config. Filter or transform inline, and returning ",[661,3288,777],{}," is a clean opt-out for that batch:",[838,3291,3293],{"className":840,"code":3292,"language":843,"meta":844,"style":844},"encode: (events, cfg) => {\n  const filtered = events.filter(e => e.level === 'error' && e.path !== '\u002Fhealth')\n  if (filtered.length === 0) return null\n\n  const payload = filtered.map(e => ({\n    ts: new Date(e.timestamp).getTime(),\n    severity: e.level.toUpperCase(),\n    attributes: { method: e.method, path: e.path, status: e.status, durationMs: e.durationMs },\n  }))\n\n  return {\n    url: `${cfg.endpoint}\u002Fv1\u002Fpush`,\n    headers: { 'Content-Type': 'application\u002Fjson' },\n    body: JSON.stringify(payload),\n  }\n}\n",[661,3294,3295,3316,3376,3403,3407,3432,3464,3486,3550,3556,3560,3566,3590,3615,3637,3642],{"__ignoreMap":844},[848,3296,3297,3300,3302,3304,3306,3308,3310,3312,3314],{"class":850,"line":851},[848,3298,3299],{"class":923},"encode",[848,3301,936],{"class":858},[848,3303,1251],{"class":858},[848,3305,1337],{"class":1127},[848,3307,1024],{"class":858},[848,3309,1207],{"class":1127},[848,3311,1344],{"class":858},[848,3313,1196],{"class":919},[848,3315,859],{"class":858},[848,3317,3318,3321,3324,3326,3328,3330,3333,3335,3337,3339,3341,3343,3345,3348,3350,3352,3354,3357,3359,3361,3364,3367,3369,3372,3374],{"class":850,"line":862},[848,3319,3320],{"class":919},"  const",[848,3322,3323],{"class":865}," filtered",[848,3325,1210],{"class":858},[848,3327,1855],{"class":865},[848,3329,1260],{"class":858},[848,3331,3332],{"class":1120},"filter",[848,3334,1124],{"class":932},[848,3336,1864],{"class":1127},[848,3338,1196],{"class":919},[848,3340,1887],{"class":865},[848,3342,1260],{"class":858},[848,3344,1906],{"class":865},[848,3346,3347],{"class":858}," ===",[848,3349,900],{"class":858},[848,3351,1278],{"class":903},[848,3353,1021],{"class":858},[848,3355,3356],{"class":858}," &&",[848,3358,1887],{"class":865},[848,3360,1260],{"class":858},[848,3362,3363],{"class":865},"path",[848,3365,3366],{"class":858}," !==",[848,3368,900],{"class":858},[848,3370,3371],{"class":903},"\u002Fhealth",[848,3373,1021],{"class":858},[848,3375,1242],{"class":932},[848,3377,3378,3381,3383,3386,3388,3391,3393,3396,3398,3401],{"class":850,"line":872},[848,3379,3380],{"class":854},"  if",[848,3382,1251],{"class":932},[848,3384,3385],{"class":865},"filtered",[848,3387,1260],{"class":858},[848,3389,3390],{"class":865},"length",[848,3392,3347],{"class":858},[848,3394,3395],{"class":1948}," 0",[848,3397,1265],{"class":932},[848,3399,3400],{"class":854},"return",[848,3402,1298],{"class":858},[848,3404,3405],{"class":850,"line":880},[848,3406,913],{"emptyLinePlaceholder":912},[848,3408,3409,3411,3414,3416,3418,3420,3422,3424,3426,3428,3430],{"class":850,"line":891},[848,3410,3320],{"class":919},[848,3412,3413],{"class":865}," payload",[848,3415,1210],{"class":858},[848,3417,3323],{"class":865},[848,3419,1260],{"class":858},[848,3421,109],{"class":1120},[848,3423,1124],{"class":932},[848,3425,1864],{"class":1127},[848,3427,1196],{"class":919},[848,3429,1251],{"class":932},[848,3431,1162],{"class":858},[848,3433,3434,3437,3439,3442,3445,3447,3449,3451,3453,3455,3457,3460,3462],{"class":850,"line":909},[848,3435,3436],{"class":932},"    ts",[848,3438,936],{"class":858},[848,3440,3441],{"class":858}," new",[848,3443,3444],{"class":1120}," Date",[848,3446,1124],{"class":932},[848,3448,1864],{"class":865},[848,3450,1260],{"class":858},[848,3452,1940],{"class":865},[848,3454,1344],{"class":932},[848,3456,1260],{"class":858},[848,3458,3459],{"class":1120},"getTime",[848,3461,2435],{"class":932},[848,3463,869],{"class":858},[848,3465,3466,3469,3471,3473,3475,3477,3479,3482,3484],{"class":850,"line":916},[848,3467,3468],{"class":932},"    severity",[848,3470,936],{"class":858},[848,3472,1887],{"class":865},[848,3474,1260],{"class":858},[848,3476,1906],{"class":865},[848,3478,1260],{"class":858},[848,3480,3481],{"class":1120},"toUpperCase",[848,3483,2435],{"class":932},[848,3485,869],{"class":858},[848,3487,3488,3491,3493,3495,3498,3500,3502,3504,3507,3509,3512,3514,3516,3518,3520,3522,3525,3527,3529,3531,3534,3536,3539,3541,3543,3545,3548],{"class":850,"line":929},[848,3489,3490],{"class":932},"    attributes",[848,3492,936],{"class":858},[848,3494,1546],{"class":858},[848,3496,3497],{"class":932}," method",[848,3499,936],{"class":858},[848,3501,1887],{"class":865},[848,3503,1260],{"class":858},[848,3505,3506],{"class":865},"method",[848,3508,1024],{"class":858},[848,3510,3511],{"class":932}," path",[848,3513,936],{"class":858},[848,3515,1887],{"class":865},[848,3517,1260],{"class":858},[848,3519,3363],{"class":865},[848,3521,1024],{"class":858},[848,3523,3524],{"class":932}," status",[848,3526,936],{"class":858},[848,3528,1887],{"class":865},[848,3530,1260],{"class":858},[848,3532,3533],{"class":865},"status",[848,3535,1024],{"class":858},[848,3537,3538],{"class":932}," durationMs",[848,3540,936],{"class":858},[848,3542,1887],{"class":865},[848,3544,1260],{"class":858},[848,3546,3547],{"class":865},"durationMs",[848,3549,1097],{"class":858},[848,3551,3552,3554],{"class":850,"line":942},[848,3553,1493],{"class":858},[848,3555,2822],{"class":932},[848,3557,3558],{"class":850,"line":953},[848,3559,913],{"emptyLinePlaceholder":912},[848,3561,3562,3564],{"class":850,"line":964},[848,3563,1148],{"class":854},[848,3565,859],{"class":858},[848,3567,3568,3571,3573,3575,3577,3579,3581,3583,3586,3588],{"class":850,"line":970},[848,3569,3570],{"class":932},"    url",[848,3572,936],{"class":858},[848,3574,1361],{"class":858},[848,3576,1257],{"class":865},[848,3578,1260],{"class":858},[848,3580,755],{"class":865},[848,3582,894],{"class":858},[848,3584,3585],{"class":903},"\u002Fv1\u002Fpush",[848,3587,1385],{"class":858},[848,3589,869],{"class":858},[848,3591,3592,3595,3597,3599,3601,3603,3605,3607,3609,3611,3613],{"class":850,"line":975},[848,3593,3594],{"class":932},"    headers",[848,3596,936],{"class":858},[848,3598,1546],{"class":858},[848,3600,900],{"class":858},[848,3602,1406],{"class":932},[848,3604,1021],{"class":858},[848,3606,936],{"class":858},[848,3608,900],{"class":858},[848,3610,1415],{"class":903},[848,3612,1021],{"class":858},[848,3614,1097],{"class":858},[848,3616,3617,3620,3622,3624,3626,3628,3630,3633,3635],{"class":850,"line":1006},[848,3618,3619],{"class":932},"    body",[848,3621,936],{"class":858},[848,3623,1464],{"class":865},[848,3625,1260],{"class":858},[848,3627,1469],{"class":1120},[848,3629,1124],{"class":932},[848,3631,3632],{"class":865},"payload",[848,3634,1344],{"class":932},[848,3636,869],{"class":858},[848,3638,3639],{"class":850,"line":1048},[848,3640,3641],{"class":858},"  }\n",[848,3643,3644],{"class":850,"line":1082},[848,3645,967],{"class":858},[815,3647,3649,3651],{"id":3648},"definedrain-non-http-transports",[661,3650,685],{}," (non-HTTP transports)",[619,3653,3654,3655,3657],{},"If your destination requires gRPC, a vendor SDK, a queue client, a WebSocket, or a raw socket, drop one level lower with ",[661,3656,685],{},". You own the transport; the toolkit still gives you config resolution, error isolation, and a consistent shape.",[838,3659,3661],{"className":840,"code":3660,"language":843,"meta":844,"style":844},"import { defineDrain } from 'evlog\u002Ftoolkit'\n\nexport const createCustomTransportDrain = () =>\n  defineDrain\u003C{ apiKey: string }>({\n    name: 'custom',\n    resolve: async () => ({ apiKey: process.env.MY_KEY! }),\n    send: async (events, cfg) => {\n      await myVendorSdk.publish(events, { token: cfg.apiKey })\n    },\n  })\n",[661,3662,3663,3682,3686,3702,3722,3737,3776,3799,3834,3838],{"__ignoreMap":844},[848,3664,3665,3667,3669,3672,3674,3676,3678,3680],{"class":850,"line":851},[848,3666,855],{"class":854},[848,3668,1546],{"class":858},[848,3670,3671],{"class":865}," defineDrain",[848,3673,1551],{"class":858},[848,3675,897],{"class":854},[848,3677,900],{"class":858},[848,3679,691],{"class":903},[848,3681,906],{"class":858},[848,3683,3684],{"class":850,"line":862},[848,3685,913],{"emptyLinePlaceholder":912},[848,3687,3688,3690,3692,3695,3697,3699],{"class":850,"line":872},[848,3689,1114],{"class":854},[848,3691,2377],{"class":919},[848,3693,3694],{"class":865}," createCustomTransportDrain ",[848,3696,1000],{"class":858},[848,3698,1193],{"class":858},[848,3700,3701],{"class":919}," =>\n",[848,3703,3704,3707,3709,3712,3714,3716,3718,3720],{"class":850,"line":880},[848,3705,3706],{"class":1120},"  defineDrain",[848,3708,1611],{"class":858},[848,3710,3711],{"class":932}," apiKey",[848,3713,936],{"class":858},[848,3715,1588],{"class":923},[848,3717,1628],{"class":858},[848,3719,1124],{"class":865},[848,3721,1162],{"class":858},[848,3723,3724,3726,3728,3730,3733,3735],{"class":850,"line":891},[848,3725,1168],{"class":932},[848,3727,936],{"class":858},[848,3729,900],{"class":858},[848,3731,3732],{"class":903},"custom",[848,3734,1021],{"class":858},[848,3736,869],{"class":858},[848,3738,3739,3741,3743,3745,3747,3749,3751,3753,3755,3757,3759,3761,3763,3765,3768,3770,3772,3774],{"class":850,"line":909},[848,3740,1185],{"class":1120},[848,3742,936],{"class":858},[848,3744,1190],{"class":919},[848,3746,1193],{"class":858},[848,3748,1196],{"class":919},[848,3750,1251],{"class":865},[848,3752,2518],{"class":858},[848,3754,3711],{"class":932},[848,3756,936],{"class":858},[848,3758,1681],{"class":865},[848,3760,1260],{"class":858},[848,3762,1686],{"class":865},[848,3764,1260],{"class":858},[848,3766,3767],{"class":865},"MY_KEY",[848,3769,1254],{"class":858},[848,3771,1551],{"class":858},[848,3773,1344],{"class":865},[848,3775,869],{"class":858},[848,3777,3778,3781,3783,3785,3787,3789,3791,3793,3795,3797],{"class":850,"line":916},[848,3779,3780],{"class":1120},"    send",[848,3782,936],{"class":858},[848,3784,1190],{"class":919},[848,3786,1251],{"class":858},[848,3788,1337],{"class":1127},[848,3790,1024],{"class":858},[848,3792,1207],{"class":1127},[848,3794,1344],{"class":858},[848,3796,1196],{"class":919},[848,3798,859],{"class":858},[848,3800,3801,3804,3807,3809,3812,3814,3816,3818,3820,3822,3824,3826,3828,3830,3832],{"class":850,"line":929},[848,3802,3803],{"class":854},"      await",[848,3805,3806],{"class":865}," myVendorSdk",[848,3808,1260],{"class":858},[848,3810,3811],{"class":1120},"publish",[848,3813,1124],{"class":932},[848,3815,1337],{"class":865},[848,3817,1024],{"class":858},[848,3819,1546],{"class":858},[848,3821,1593],{"class":932},[848,3823,936],{"class":858},[848,3825,1207],{"class":865},[848,3827,1260],{"class":858},[848,3829,751],{"class":865},[848,3831,1551],{"class":858},[848,3833,1242],{"class":932},[848,3835,3836],{"class":850,"line":942},[848,3837,1324],{"class":858},[848,3839,3840,3842],{"class":850,"line":953},[848,3841,1493],{"class":858},[848,3843,1242],{"class":865},[619,3845,3846,3847,3850,3851,3853,3854,3856,3857,3860,3861,3864,3865,3867],{},"Let ",[661,3848,3849],{},"send"," throw on failure. ",[661,3852,685],{}," handles the isolation: a direct call swallows the error and logs it with your drain's name, while the ",[661,3855,1522],{}," variant on the returned function rejects, which is how ",[628,3858,3859],{"href":545},"the pipeline","'s retry and ",[661,3862,3863],{},"onDropped"," observe failures. A ",[661,3866,3849],{}," that swallows its own errors makes your drain unretryable.",[815,3869,3871],{"id":3870},"what-a-draincontext-carries","What a DrainContext carries",[619,3873,3874,3875,3877,3878,3881],{},"When evlog calls your drain through ",[661,3876,2191],{},", it passes a ",[661,3879,3880],{},"DrainContext"," per event:",[838,3883,3886],{"className":840,"code":3884,"filename":3885,"language":843,"meta":844,"style":844},"interface DrainContext {\n  \u002F** The complete wide event with all accumulated context *\u002F\n  event: WideEvent\n\n  \u002F** Request metadata *\u002F\n  request?: {\n    method: string\n    path: string\n    requestId: string\n  }\n\n  \u002F** Safe HTTP headers (sensitive headers filtered) *\u002F\n  headers?: Record\u003Cstring, string>\n}\n\ninterface WideEvent {\n  timestamp: string\n  level: 'debug' | 'info' | 'warn' | 'error'\n  service: string\n  environment?: string\n  version?: string\n  region?: string\n  commitHash?: string\n  requestId?: string\n  \u002F\u002F ... plus all fields added via log.set()\n  [key: string]: unknown\n}\n","types.ts",[661,3887,3888,3897,3903,3913,3917,3922,3931,3940,3949,3958,3962,3966,3971,3993,3997,4001,4010,4019,4060,4068,4077,4086,4095,4104,4113,4118,4138],{"__ignoreMap":844},[848,3889,3890,3892,3895],{"class":850,"line":851},[848,3891,920],{"class":919},[848,3893,3894],{"class":923}," DrainContext",[848,3896,859],{"class":858},[848,3898,3899],{"class":850,"line":862},[848,3900,3902],{"class":3901},"sHwdD","  \u002F** The complete wide event with all accumulated context *\u002F\n",[848,3904,3905,3908,3910],{"class":850,"line":872},[848,3906,3907],{"class":932},"  event",[848,3909,936],{"class":858},[848,3911,3912],{"class":923}," WideEvent\n",[848,3914,3915],{"class":850,"line":880},[848,3916,913],{"emptyLinePlaceholder":912},[848,3918,3919],{"class":850,"line":891},[848,3920,3921],{"class":3901},"  \u002F** Request metadata *\u002F\n",[848,3923,3924,3927,3929],{"class":850,"line":909},[848,3925,3926],{"class":932},"  request",[848,3928,948],{"class":858},[848,3930,859],{"class":858},[848,3932,3933,3936,3938],{"class":850,"line":916},[848,3934,3935],{"class":932},"    method",[848,3937,936],{"class":858},[848,3939,939],{"class":923},[848,3941,3942,3945,3947],{"class":850,"line":929},[848,3943,3944],{"class":932},"    path",[848,3946,936],{"class":858},[848,3948,939],{"class":923},[848,3950,3951,3954,3956],{"class":850,"line":942},[848,3952,3953],{"class":932},"    requestId",[848,3955,936],{"class":858},[848,3957,939],{"class":923},[848,3959,3960],{"class":850,"line":953},[848,3961,3641],{"class":858},[848,3963,3964],{"class":850,"line":964},[848,3965,913],{"emptyLinePlaceholder":912},[848,3967,3968],{"class":850,"line":970},[848,3969,3970],{"class":3901},"  \u002F** Safe HTTP headers (sensitive headers filtered) *\u002F\n",[848,3972,3973,3976,3978,3981,3983,3986,3988,3990],{"class":850,"line":975},[848,3974,3975],{"class":932},"  headers",[848,3977,948],{"class":858},[848,3979,3980],{"class":923}," Record",[848,3982,988],{"class":858},[848,3984,3985],{"class":923},"string",[848,3987,1024],{"class":858},[848,3989,1588],{"class":923},[848,3991,3992],{"class":858},">\n",[848,3994,3995],{"class":850,"line":1006},[848,3996,967],{"class":858},[848,3998,3999],{"class":850,"line":1048},[848,4000,913],{"emptyLinePlaceholder":912},[848,4002,4003,4005,4008],{"class":850,"line":1082},[848,4004,920],{"class":919},[848,4006,4007],{"class":923}," WideEvent",[848,4009,859],{"class":858},[848,4011,4012,4015,4017],{"class":850,"line":1100},[848,4013,4014],{"class":932},"  timestamp",[848,4016,936],{"class":858},[848,4018,939],{"class":923},[848,4020,4021,4024,4026,4028,4031,4033,4036,4038,4041,4043,4045,4047,4050,4052,4054,4056,4058],{"class":850,"line":1106},[848,4022,4023],{"class":932},"  level",[848,4025,936],{"class":858},[848,4027,900],{"class":858},[848,4029,4030],{"class":903},"debug",[848,4032,1021],{"class":858},[848,4034,4035],{"class":858}," |",[848,4037,900],{"class":858},[848,4039,4040],{"class":903},"info",[848,4042,1021],{"class":858},[848,4044,4035],{"class":858},[848,4046,900],{"class":858},[848,4048,4049],{"class":903},"warn",[848,4051,1021],{"class":858},[848,4053,4035],{"class":858},[848,4055,900],{"class":858},[848,4057,1278],{"class":903},[848,4059,906],{"class":858},[848,4061,4062,4064,4066],{"class":850,"line":1111},[848,4063,2412],{"class":932},[848,4065,936],{"class":858},[848,4067,939],{"class":923},[848,4069,4070,4073,4075],{"class":850,"line":1145},[848,4071,4072],{"class":932},"  environment",[848,4074,948],{"class":858},[848,4076,939],{"class":923},[848,4078,4079,4082,4084],{"class":850,"line":1165},[848,4080,4081],{"class":932},"  version",[848,4083,948],{"class":858},[848,4085,939],{"class":923},[848,4087,4088,4091,4093],{"class":850,"line":1182},[848,4089,4090],{"class":932},"  region",[848,4092,948],{"class":858},[848,4094,939],{"class":923},[848,4096,4097,4100,4102],{"class":850,"line":1201},[848,4098,4099],{"class":932},"  commitHash",[848,4101,948],{"class":858},[848,4103,939],{"class":923},[848,4105,4106,4109,4111],{"class":850,"line":1245},[848,4107,4108],{"class":932},"  requestId",[848,4110,948],{"class":858},[848,4112,939],{"class":923},[848,4114,4115],{"class":850,"line":1270},[848,4116,4117],{"class":3901},"  \u002F\u002F ... plus all fields added via log.set()\n",[848,4119,4120,4123,4126,4128,4130,4133,4135],{"class":850,"line":1292},[848,4121,4122],{"class":865},"  [",[848,4124,4125],{"class":1127},"key",[848,4127,936],{"class":858},[848,4129,1588],{"class":923},[848,4131,4132],{"class":865},"]",[848,4134,936],{"class":858},[848,4136,4137],{"class":923}," unknown\n",[848,4139,4140],{"class":850,"line":1301},[848,4141,967],{"class":858},[619,4143,4144,4145,4147,4148,4151,4152,4154,4155,4158],{},"In the batched form your ",[661,4146,832],{}," \u002F ",[661,4149,4150],{},"send()"," receives, you get ",[661,4153,3285],{}," directly (the toolkit unwraps ",[661,4156,4157],{},"event"," from each context).",[815,4160,4162],{"id":4161},"reach-for-a-toolkit-helper","Reach for a toolkit helper",[619,4164,4165,4167],{},[661,4166,691],{}," exposes the same helpers every built-in adapter uses. The ones relevant to drains:",[636,4169,4170,4180],{},[639,4171,4172],{},[642,4173,4174,4177],{},[645,4175,4176],{},"Export",[645,4178,4179],{},"Purpose",[652,4181,4182,4192,4202,4214,4224,4237,4247,4261],{},[642,4183,4184,4189],{},[657,4185,4186],{},[661,4187,4188],{},"defineHttpDrain(spec)",[657,4190,4191],{},"The HTTP recipe — auto retries, timeouts, identity headers, error isolation",[642,4193,4194,4199],{},[657,4195,4196],{},[661,4197,4198],{},"defineDrain(spec)",[657,4200,4201],{},"Same contract for non-HTTP transports",[642,4203,4204,4209],{},[657,4205,4206],{},[661,4207,4208],{},"resolveAdapterConfig(ns, fields, overrides)",[657,4210,4211,4212,745],{},"Standard config priority chain (overrides → ",[661,4213,744],{},[642,4215,4216,4221],{},[657,4217,4218],{},[661,4219,4220],{},"httpPost(opts)",[657,4222,4223],{},"The retried POST helper used by every built-in HTTP adapter — handles timeout, retries, redacted error messages",[642,4225,4226,4231],{},[657,4227,4228],{},[661,4229,4230],{},"composeDrains(drains)",[657,4232,4233,4234,1344],{},"Combine multiple drains into one (errors isolated, runs concurrently with ",[661,4235,4236],{},"Promise.allSettled",[642,4238,4239,4244],{},[657,4240,4241],{},[661,4242,4243],{},"toTypedAttributeValue(value)",[657,4245,4246],{},"Convert any value to the typed attribute shape used by Axiom \u002F Sentry",[642,4248,4249,4254],{},[657,4250,4251],{},[661,4252,4253],{},"toOtlpAttributeValue(value)",[657,4255,4256,4257,4260],{},"Convert any value to the OTLP ",[661,4258,4259],{},"AnyValue"," shape (used by OTLP \u002F HyperDX \u002F PostHog logs)",[642,4262,4263,4271],{},[657,4264,4265,760,4268],{},[661,4266,4267],{},"OTEL_SEVERITY_NUMBER",[661,4269,4270],{},"OTEL_SEVERITY_TEXT",[657,4272,4273],{},"OTEL log severity tables",[815,4275,4277],{"id":4276},"identify-your-traffic-to-the-receiver","Identify your traffic to the receiver",[619,4279,4280,4282],{},[661,4281,672],{}," automatically tags every request with two headers so receivers can identify the traffic:",[636,4284,4285,4295],{},[639,4286,4287],{},[642,4288,4289,4292],{},[645,4290,4291],{},"Header",[645,4293,4294],{},"Value",[652,4296,4297,4310],{},[642,4298,4299,4304],{},[657,4300,4301],{},[661,4302,4303],{},"User-Agent",[657,4305,4306,4309],{},[661,4307,4308],{},"evlog\u002F\u003Cversion>"," (Node \u002F server runtimes only — browsers strip this header)",[642,4311,4312,4317],{},[657,4313,4314],{},[661,4315,4316],{},"X-Evlog-Source",[657,4318,4319,4320,4323],{},"The drain ",[661,4321,4322],{},"name"," you provided",[619,4325,4326,4327,4330,4331,1260],{},"If you build a drain on top of ",[661,4328,4329],{},"httpPost"," directly, you can override or suppress them. See ",[628,4332,534],{"href":535},[815,4334,4336],{"id":4335},"errors-are-already-handled-for-you","Errors are already handled for you",[619,4338,4339,4341],{},[661,4340,672],{}," enforces every best practice automatically:",[2016,4343,4344,4354,4364,4372],{},[706,4345,4346,4349,4350,4353],{},[623,4347,4348],{},"Never throws",": failures are caught and logged with the ",[661,4351,4352],{},"[evlog\u002F\u003Cname>]"," prefix.",[706,4355,4356,4359,4360,4363],{},[623,4357,4358],{},"Retries",": defaults to 2 attempts on transient errors (configurable via ",[661,4361,4362],{},"retries",").",[706,4365,4366,4369,4370,4363],{},[623,4367,4368],{},"Timeouts",": defaults to 5000ms (configurable via ",[661,4371,763],{},[706,4373,4374,4377,4378,4380,4381,4383],{},[623,4375,4376],{},"Graceful degradation",": ",[661,4379,736],{}," returning ",[661,4382,777],{}," makes the drain a no-op.",[619,4385,4386,4387,4389],{},"If you fall back to ",[661,4388,685],{},", follow the same rules manually.",[815,4391,4393],{"id":4392},"publish-it-as-a-community-package","Publish it as a community package",[619,4395,4396],{},"Recommended structure for a community drain:",[838,4398,4403],{"className":4399,"code":4401,"language":4402,"meta":844},[4400],"language-text","my-evlog-drain\u002F\n├─ src\u002F\n│  ├─ drain.ts        # createMyDrain via defineHttpDrain\n│  └─ index.ts        # re-exports\n├─ test\u002F              # vitest, mock fetch\n├─ package.json       # peerDependency: \"evlog\"\n└─ README.md\n","text",[661,4404,4401],{"__ignoreMap":844},[619,4406,4407,4408,4410,4411,4414,4415,4418],{},"Add ",[661,4409,2805],{}," as a ",[661,4412,4413],{},"peerDependency"," (not a ",[661,4416,4417],{},"dependency","), so your package will not pull in a copy of evlog at install time.",[4420,4421,4424,4425,4430],"callout",{"color":4422,"icon":4423},"neutral","i-lucide-heart","Built something great? ",[628,4426,4429],{"href":4427,"rel":4428},"https:\u002F\u002Fgithub.com\u002Fevloghq\u002Fevlog\u002Fpulls",[808],"Open a PR"," to add a row to the Adapters table. The community will thank you.",[815,4432,4434],{"id":4433},"next-steps","Next steps",[703,4436,4437,4443,4451,4457,4463],{},[706,4438,4439,4442],{},[628,4440,4441],{"href":545},"Drain Pipeline",": wrap your drain in batch + retry + fanout for production",[706,4444,4445,4448,4449],{},[628,4446,4447],{"href":163},"Adapters Overview",": see how the built-in adapters use ",[661,4450,672],{},[706,4452,4453,4456],{},[628,4454,4455],{"href":527},"Custom Enrichers",": same toolkit shape for derived event fields",[706,4458,4459,4462],{},[628,4460,4461],{"href":505},"Custom Framework Integration",": same toolkit shape for HTTP frameworks",[706,4464,4465,4467],{},[628,4466,570],{"href":571},": security and production tips",[4469,4470,4471],"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 .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sTEyZ, html code.shiki .sTEyZ{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html pre.shiki code .spNyl, html code.shiki .spNyl{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .sBMFI, html code.shiki .sBMFI{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .s2Zo4, html code.shiki .s2Zo4{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .sHdIc, html code.shiki .sHdIc{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#EEFFFF;--shiki-default-font-style:italic;--shiki-dark:#BABED8;--shiki-dark-font-style:italic}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .sbssI, html code.shiki .sbssI{--shiki-light:#F76D47;--shiki-default:#F78C6C;--shiki-dark:#F78C6C}html pre.shiki code .sHwdD, html code.shiki .sHwdD{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#546E7A;--shiki-default-font-style:italic;--shiki-dark:#676E95;--shiki-dark-font-style:italic}",{"title":844,"searchDepth":862,"depth":862,"links":4473},[4474,4478,4479,4480,4481,4483,4484,4485,4486,4487,4488],{"id":817,"depth":862,"text":4475,"children":4476},"defineHttpDrain (the HTTP recipe)",[4477],{"id":1527,"depth":872,"text":1528},{"id":2008,"depth":862,"text":2009},{"id":2088,"depth":862,"text":2089},{"id":3276,"depth":862,"text":3277},{"id":3648,"depth":862,"text":4482},"defineDrain (non-HTTP transports)",{"id":3870,"depth":862,"text":3871},{"id":4161,"depth":862,"text":4162},{"id":4276,"depth":862,"text":4277},{"id":4335,"depth":862,"text":4336},{"id":4392,"depth":862,"text":4393},{"id":4433,"depth":862,"text":4434},"Build a drain for any backend without a built-in adapter. Config resolution, retries, timeouts, and identity headers are handled for you.","md",[4492,4494,4496],{"label":4441,"icon":547,"to":545,"color":4422,"variant":4493},"subtle",{"label":4447,"icon":4495,"to":163,"color":4422,"variant":4493},"i-custom-plug",{"label":570,"icon":398,"to":571,"color":4422,"variant":4493},{},{"title":539,"icon":542},{"title":614,"description":4489},"xLyeGKOCxsUnIonmrSvEKRLoo6yXM_TTULXpuUJVXyg",[4502,4504],{"title":534,"path":535,"stem":536,"description":4503,"icon":537,"children":-1},"Every drain request carries User-Agent and X-Evlog-Source so receivers can triage the traffic. Override or suppress them when you need to.",{"title":544,"path":545,"stem":546,"description":4505,"icon":547,"children":-1},"The pipeline wraps every drain: it batches events, retries on failure, fans out to several destinations, and ships browser logs.",1791636501305]