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OpenTelemetry","\u002Fcompare\u002Fopentelemetry","8.compare\u002F2.opentelemetry",{"title":601,"path":602,"stem":603,"icon":577},"evlog vs LogTape","\u002Fcompare\u002Flogtape","8.compare\u002F3.logtape",{"title":605,"path":606,"stem":607,"icon":577},"evlog vs Winston: formats and request events","\u002Fcompare\u002Fwinston","8.compare\u002F4.winston",{"title":609,"path":610,"stem":611,"icon":577},"evlog vs Consola: reporters and request context","\u002Fcompare\u002Fconsola","8.compare\u002F5.consola",{"id":613,"title":614,"body":615,"description":2462,"extension":2463,"links":2464,"meta":2469,"navigation":2470,"path":426,"seo":2471,"stem":427,"__hash__":2472},"docs\u002F5.use-cases\u002F4.audit\u002F06.recipes.md","Recipes & Reference",{"type":616,"value":617,"toc":2455},"minimark",[618,635,640,1248,1257,1261,1559,1562,1566,1941,1951,1955,1971,2217,2231,2242,2246,2445,2451],[619,620,621,622,626,627,630,631,634],"p",{},"Pick the recipe that matches your drain, drop it in, and you have a tamper-evident audit log. Each recipe composes the same primitives (",[623,624,625],"code",{},"auditOnly",", ",[623,628,629],{},"signed",", optional ",[623,632,633],{},"await: true",") over different drains.",[636,637,639],"h2",{"id":638},"audit-logs-on-disk","Audit logs on disk",[641,642,643,849],"code-group",{},[644,645,651],"pre",{"className":646,"code":647,"filename":648,"language":649,"meta":650,"style":650},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { auditOnly, signed } from 'evlog'\nimport { createFsDrain } from 'evlog\u002Ffs'\n\nnitro.hooks.hook('evlog:drain', auditOnly(\n  signed(createFsDrain({ dir: '.audit', maxFiles: 30 }), { strategy: 'hash-chain' }),\n  { await: true },\n))\n","Input — server\u002Fplugins\u002Fevlog.ts","typescript","",[623,652,653,692,713,720,756,825,843],{"__ignoreMap":650},[654,655,658,662,666,670,673,676,679,682,685,689],"span",{"class":656,"line":657},"line",1,[654,659,661],{"class":660},"s7zQu","import",[654,663,665],{"class":664},"sMK4o"," {",[654,667,669],{"class":668},"sTEyZ"," auditOnly",[654,671,672],{"class":664},",",[654,674,675],{"class":668}," signed",[654,677,678],{"class":664}," }",[654,680,681],{"class":660}," from",[654,683,684],{"class":664}," '",[654,686,688],{"class":687},"sfazB","evlog",[654,690,691],{"class":664},"'\n",[654,693,695,697,699,702,704,706,708,711],{"class":656,"line":694},2,[654,696,661],{"class":660},[654,698,665],{"class":664},[654,700,701],{"class":668}," createFsDrain",[654,703,678],{"class":664},[654,705,681],{"class":660},[654,707,684],{"class":664},[654,709,710],{"class":687},"evlog\u002Ffs",[654,712,691],{"class":664},[654,714,716],{"class":656,"line":715},3,[654,717,719],{"emptyLinePlaceholder":718},true,"\n",[654,721,723,726,729,732,734,738,741,744,747,749,751,753],{"class":656,"line":722},4,[654,724,725],{"class":668},"nitro",[654,727,728],{"class":664},".",[654,730,731],{"class":668},"hooks",[654,733,728],{"class":664},[654,735,737],{"class":736},"s2Zo4","hook",[654,739,740],{"class":668},"(",[654,742,743],{"class":664},"'",[654,745,746],{"class":687},"evlog:drain",[654,748,743],{"class":664},[654,750,672],{"class":664},[654,752,669],{"class":736},[654,754,755],{"class":668},"(\n",[654,757,759,762,764,767,769,772,776,779,781,784,786,788,791,793,797,799,802,804,806,809,811,813,816,818,820,822],{"class":656,"line":758},5,[654,760,761],{"class":736},"  signed",[654,763,740],{"class":668},[654,765,766],{"class":736},"createFsDrain",[654,768,740],{"class":668},[654,770,771],{"class":664},"{",[654,773,775],{"class":774},"swJcz"," dir",[654,777,778],{"class":664},":",[654,780,684],{"class":664},[654,782,783],{"class":687},".audit",[654,785,743],{"class":664},[654,787,672],{"class":664},[654,789,790],{"class":774}," maxFiles",[654,792,778],{"class":664},[654,794,796],{"class":795},"sbssI"," 30",[654,798,678],{"class":664},[654,800,801],{"class":668},")",[654,803,672],{"class":664},[654,805,665],{"class":664},[654,807,808],{"class":774}," strategy",[654,810,778],{"class":664},[654,812,684],{"class":664},[654,814,815],{"class":687},"hash-chain",[654,817,743],{"class":664},[654,819,678],{"class":664},[654,821,801],{"class":668},[654,823,824],{"class":664},",\n",[654,826,828,831,834,836,840],{"class":656,"line":827},6,[654,829,830],{"class":664},"  {",[654,832,833],{"class":774}," await",[654,835,778],{"class":664},[654,837,839],{"class":838},"sfNiH"," true",[654,841,842],{"class":664}," },\n",[654,844,846],{"class":656,"line":845},7,[654,847,848],{"class":668},"))\n",[644,850,855],{"className":851,"code":852,"filename":853,"language":854,"meta":650,"style":650},"language-jsonl shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","{\"audit\":{\"action\":\"invoice.refund\",\"actor\":{\"type\":\"user\",\"id\":\"usr_42\"},\"target\":{\"type\":\"invoice\",\"id\":\"inv_889\"},\"outcome\":\"success\",\"version\":1,\"idempotencyKey\":\"ak_8f3c4b2a1e5d6f7c\",\"prevHash\":null,\"hash\":\"3f2c8e1a...\"}}\n{\"audit\":{\"action\":\"user.update\",\"actor\":{\"type\":\"user\",\"id\":\"usr_42\"},\"target\":{\"type\":\"user\",\"id\":\"usr_99\"},\"outcome\":\"success\",\"version\":1,\"idempotencyKey\":\"ak_5e7d8f9a0b1c2d3e\",\"prevHash\":\"3f2c8e1a...\",\"hash\":\"9a1b4d7c...\"}}\n","Output — .audit\u002F2026-04-24.ndjson","jsonl",[623,856,857,1060],{"__ignoreMap":650},[654,858,859,861,864,868,870,873,875,879,881,883,885,888,890,892,894,897,899,901,903,906,908,910,912,915,917,919,921,924,926,928,930,933,935,938,940,943,945,947,949,951,953,955,957,960,962,964,966,968,970,972,974,977,979,981,983,986,988,990,992,995,997,999,1001,1004,1006,1008,1011,1013,1015,1018,1020,1022,1024,1027,1029,1031,1033,1036,1038,1041,1043,1046,1048,1050,1052,1055,1057],{"class":656,"line":657},[654,860,771],{"class":664},[654,862,863],{"class":664},"\"",[654,865,867],{"class":866},"spNyl","audit",[654,869,863],{"class":664},[654,871,872],{"class":664},":{",[654,874,863],{"class":664},[654,876,878],{"class":877},"sBMFI","action",[654,880,863],{"class":664},[654,882,778],{"class":664},[654,884,863],{"class":664},[654,886,887],{"class":687},"invoice.refund",[654,889,863],{"class":664},[654,891,672],{"class":664},[654,893,863],{"class":664},[654,895,896],{"class":877},"actor",[654,898,863],{"class":664},[654,900,872],{"class":664},[654,902,863],{"class":664},[654,904,905],{"class":795},"type",[654,907,863],{"class":664},[654,909,778],{"class":664},[654,911,863],{"class":664},[654,913,914],{"class":687},"user",[654,916,863],{"class":664},[654,918,672],{"class":664},[654,920,863],{"class":664},[654,922,923],{"class":795},"id",[654,925,863],{"class":664},[654,927,778],{"class":664},[654,929,863],{"class":664},[654,931,932],{"class":687},"usr_42",[654,934,863],{"class":664},[654,936,937],{"class":664},"},",[654,939,863],{"class":664},[654,941,942],{"class":877},"target",[654,944,863],{"class":664},[654,946,872],{"class":664},[654,948,863],{"class":664},[654,950,905],{"class":795},[654,952,863],{"class":664},[654,954,778],{"class":664},[654,956,863],{"class":664},[654,958,959],{"class":687},"invoice",[654,961,863],{"class":664},[654,963,672],{"class":664},[654,965,863],{"class":664},[654,967,923],{"class":795},[654,969,863],{"class":664},[654,971,778],{"class":664},[654,973,863],{"class":664},[654,975,976],{"class":687},"inv_889",[654,978,863],{"class":664},[654,980,937],{"class":664},[654,982,863],{"class":664},[654,984,985],{"class":877},"outcome",[654,987,863],{"class":664},[654,989,778],{"class":664},[654,991,863],{"class":664},[654,993,994],{"class":687},"success",[654,996,863],{"class":664},[654,998,672],{"class":664},[654,1000,863],{"class":664},[654,1002,1003],{"class":877},"version",[654,1005,863],{"class":664},[654,1007,778],{"class":664},[654,1009,1010],{"class":795},"1",[654,1012,672],{"class":664},[654,1014,863],{"class":664},[654,1016,1017],{"class":877},"idempotencyKey",[654,1019,863],{"class":664},[654,1021,778],{"class":664},[654,1023,863],{"class":664},[654,1025,1026],{"class":687},"ak_8f3c4b2a1e5d6f7c",[654,1028,863],{"class":664},[654,1030,672],{"class":664},[654,1032,863],{"class":664},[654,1034,1035],{"class":877},"prevHash",[654,1037,863],{"class":664},[654,1039,1040],{"class":664},":null,",[654,1042,863],{"class":664},[654,1044,1045],{"class":877},"hash",[654,1047,863],{"class":664},[654,1049,778],{"class":664},[654,1051,863],{"class":664},[654,1053,1054],{"class":687},"3f2c8e1a...",[654,1056,863],{"class":664},[654,1058,1059],{"class":664},"}}\n",[654,1061,1062,1064,1066,1068,1070,1072,1074,1076,1078,1080,1082,1085,1087,1089,1091,1093,1095,1097,1099,1101,1103,1105,1107,1109,1111,1113,1115,1117,1119,1121,1123,1125,1127,1129,1131,1133,1135,1137,1139,1141,1143,1145,1147,1149,1151,1153,1155,1157,1159,1161,1163,1166,1168,1170,1172,1174,1176,1178,1180,1182,1184,1186,1188,1190,1192,1194,1196,1198,1200,1202,1204,1206,1208,1211,1213,1215,1217,1219,1221,1223,1225,1227,1229,1231,1233,1235,1237,1239,1241,1244,1246],{"class":656,"line":694},[654,1063,771],{"class":664},[654,1065,863],{"class":664},[654,1067,867],{"class":866},[654,1069,863],{"class":664},[654,1071,872],{"class":664},[654,1073,863],{"class":664},[654,1075,878],{"class":877},[654,1077,863],{"class":664},[654,1079,778],{"class":664},[654,1081,863],{"class":664},[654,1083,1084],{"class":687},"user.update",[654,1086,863],{"class":664},[654,1088,672],{"class":664},[654,1090,863],{"class":664},[654,1092,896],{"class":877},[654,1094,863],{"class":664},[654,1096,872],{"class":664},[654,1098,863],{"class":664},[654,1100,905],{"class":795},[654,1102,863],{"class":664},[654,1104,778],{"class":664},[654,1106,863],{"class":664},[654,1108,914],{"class":687},[654,1110,863],{"class":664},[654,1112,672],{"class":664},[654,1114,863],{"class":664},[654,1116,923],{"class":795},[654,1118,863],{"class":664},[654,1120,778],{"class":664},[654,1122,863],{"class":664},[654,1124,932],{"class":687},[654,1126,863],{"class":664},[654,1128,937],{"class":664},[654,1130,863],{"class":664},[654,1132,942],{"class":877},[654,1134,863],{"class":664},[654,1136,872],{"class":664},[654,1138,863],{"class":664},[654,1140,905],{"class":795},[654,1142,863],{"class":664},[654,1144,778],{"class":664},[654,1146,863],{"class":664},[654,1148,914],{"class":687},[654,1150,863],{"class":664},[654,1152,672],{"class":664},[654,1154,863],{"class":664},[654,1156,923],{"class":795},[654,1158,863],{"class":664},[654,1160,778],{"class":664},[654,1162,863],{"class":664},[654,1164,1165],{"class":687},"usr_99",[654,1167,863],{"class":664},[654,1169,937],{"class":664},[654,1171,863],{"class":664},[654,1173,985],{"class":877},[654,1175,863],{"class":664},[654,1177,778],{"class":664},[654,1179,863],{"class":664},[654,1181,994],{"class":687},[654,1183,863],{"class":664},[654,1185,672],{"class":664},[654,1187,863],{"class":664},[654,1189,1003],{"class":877},[654,1191,863],{"class":664},[654,1193,778],{"class":664},[654,1195,1010],{"class":795},[654,1197,672],{"class":664},[654,1199,863],{"class":664},[654,1201,1017],{"class":877},[654,1203,863],{"class":664},[654,1205,778],{"class":664},[654,1207,863],{"class":664},[654,1209,1210],{"class":687},"ak_5e7d8f9a0b1c2d3e",[654,1212,863],{"class":664},[654,1214,672],{"class":664},[654,1216,863],{"class":664},[654,1218,1035],{"class":877},[654,1220,863],{"class":664},[654,1222,778],{"class":664},[654,1224,863],{"class":664},[654,1226,1054],{"class":687},[654,1228,863],{"class":664},[654,1230,672],{"class":664},[654,1232,863],{"class":664},[654,1234,1045],{"class":877},[654,1236,863],{"class":664},[654,1238,778],{"class":664},[654,1240,863],{"class":664},[654,1242,1243],{"class":687},"9a1b4d7c...",[654,1245,863],{"class":664},[654,1247,1059],{"class":664},[619,1249,1250,1251,1253,1254,1256],{},"Each line's ",[623,1252,1035],{}," matches the previous line's ",[623,1255,1045],{},". Tampering with any row breaks the chain forward of that point, and a verifier replays the hashes and reports the first mismatch.",[636,1258,1260],{"id":1259},"audit-logs-to-a-dedicated-axiom-dataset","Audit logs to a dedicated Axiom dataset",[641,1262,1263,1429,1497],{},[644,1264,1266],{"className":646,"code":1265,"filename":648,"language":649,"meta":650,"style":650},"import { auditOnly } from 'evlog'\nimport { createAxiomDrain } from 'evlog\u002Faxiom'\n\nnitro.hooks.hook('evlog:drain', createAxiomDrain({ dataset: 'logs' }))\nnitro.hooks.hook('evlog:drain', auditOnly(\n  createAxiomDrain({ dataset: 'audit', apiKey: process.env.AXIOM_AUDIT_API_KEY }),\n))\n",[623,1267,1268,1286,1306,1310,1353,1379,1425],{"__ignoreMap":650},[654,1269,1270,1272,1274,1276,1278,1280,1282,1284],{"class":656,"line":657},[654,1271,661],{"class":660},[654,1273,665],{"class":664},[654,1275,669],{"class":668},[654,1277,678],{"class":664},[654,1279,681],{"class":660},[654,1281,684],{"class":664},[654,1283,688],{"class":687},[654,1285,691],{"class":664},[654,1287,1288,1290,1292,1295,1297,1299,1301,1304],{"class":656,"line":694},[654,1289,661],{"class":660},[654,1291,665],{"class":664},[654,1293,1294],{"class":668}," createAxiomDrain",[654,1296,678],{"class":664},[654,1298,681],{"class":660},[654,1300,684],{"class":664},[654,1302,1303],{"class":687},"evlog\u002Faxiom",[654,1305,691],{"class":664},[654,1307,1308],{"class":656,"line":715},[654,1309,719],{"emptyLinePlaceholder":718},[654,1311,1312,1314,1316,1318,1320,1322,1324,1326,1328,1330,1332,1334,1336,1338,1341,1343,1345,1347,1349,1351],{"class":656,"line":722},[654,1313,725],{"class":668},[654,1315,728],{"class":664},[654,1317,731],{"class":668},[654,1319,728],{"class":664},[654,1321,737],{"class":736},[654,1323,740],{"class":668},[654,1325,743],{"class":664},[654,1327,746],{"class":687},[654,1329,743],{"class":664},[654,1331,672],{"class":664},[654,1333,1294],{"class":736},[654,1335,740],{"class":668},[654,1337,771],{"class":664},[654,1339,1340],{"class":774}," dataset",[654,1342,778],{"class":664},[654,1344,684],{"class":664},[654,1346,99],{"class":687},[654,1348,743],{"class":664},[654,1350,678],{"class":664},[654,1352,848],{"class":668},[654,1354,1355,1357,1359,1361,1363,1365,1367,1369,1371,1373,1375,1377],{"class":656,"line":758},[654,1356,725],{"class":668},[654,1358,728],{"class":664},[654,1360,731],{"class":668},[654,1362,728],{"class":664},[654,1364,737],{"class":736},[654,1366,740],{"class":668},[654,1368,743],{"class":664},[654,1370,746],{"class":687},[654,1372,743],{"class":664},[654,1374,672],{"class":664},[654,1376,669],{"class":736},[654,1378,755],{"class":668},[654,1380,1381,1384,1386,1388,1390,1392,1394,1396,1398,1400,1403,1405,1408,1410,1413,1415,1418,1421,1423],{"class":656,"line":827},[654,1382,1383],{"class":736},"  createAxiomDrain",[654,1385,740],{"class":668},[654,1387,771],{"class":664},[654,1389,1340],{"class":774},[654,1391,778],{"class":664},[654,1393,684],{"class":664},[654,1395,867],{"class":687},[654,1397,743],{"class":664},[654,1399,672],{"class":664},[654,1401,1402],{"class":774}," apiKey",[654,1404,778],{"class":664},[654,1406,1407],{"class":668}," process",[654,1409,728],{"class":664},[654,1411,1412],{"class":668},"env",[654,1414,728],{"class":664},[654,1416,1417],{"class":668},"AXIOM_AUDIT_API_KEY ",[654,1419,1420],{"class":664},"}",[654,1422,801],{"class":668},[654,1424,824],{"class":664},[654,1426,1427],{"class":656,"line":845},[654,1428,848],{"class":668},[644,1430,1435],{"className":1431,"code":1432,"filename":1433,"language":1434,"meta":650,"style":650},"language-kusto shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","['audit']\n| where audit.action == \"invoice.refund\"\n| summarize count() by audit.outcome, bin(_time, 1h)\n","Output — Axiom query","kusto",[623,1436,1437,1451,1469],{"__ignoreMap":650},[654,1438,1439,1442,1444,1446,1448],{"class":656,"line":657},[654,1440,1441],{"class":668},"[",[654,1443,743],{"class":664},[654,1445,867],{"class":687},[654,1447,743],{"class":664},[654,1449,1450],{"class":668},"]\n",[654,1452,1453,1456,1459,1462,1464,1466],{"class":656,"line":694},[654,1454,1455],{"class":668},"| ",[654,1457,1458],{"class":795},"where",[654,1460,1461],{"class":668}," audit.action == ",[654,1463,863],{"class":664},[654,1465,887],{"class":687},[654,1467,1468],{"class":664},"\"\n",[654,1470,1471,1473,1476,1479,1482,1485,1488,1491,1494],{"class":656,"line":715},[654,1472,1455],{"class":668},[654,1474,1475],{"class":795},"summarize",[654,1477,1478],{"class":736}," count()",[654,1480,1481],{"class":795}," by",[654,1483,1484],{"class":668}," audit.outcome, ",[654,1486,1487],{"class":736},"bin",[654,1489,1490],{"class":668},"(_time, ",[654,1492,1493],{"class":795},"1h",[654,1495,1496],{"class":668},")\n",[644,1498,1501],{"className":1431,"code":1499,"filename":1500,"language":1434,"meta":650,"style":650},"['audit']\n| where audit.outcome == \"denied\"\n| summarize count() by audit.actor.id, audit.action\n| order by count_ desc\n","Output — denials by actor",[623,1502,1503,1515,1531,1544],{"__ignoreMap":650},[654,1504,1505,1507,1509,1511,1513],{"class":656,"line":657},[654,1506,1441],{"class":668},[654,1508,743],{"class":664},[654,1510,867],{"class":687},[654,1512,743],{"class":664},[654,1514,1450],{"class":668},[654,1516,1517,1519,1521,1524,1526,1529],{"class":656,"line":694},[654,1518,1455],{"class":668},[654,1520,1458],{"class":795},[654,1522,1523],{"class":668}," audit.outcome == ",[654,1525,863],{"class":664},[654,1527,1528],{"class":687},"denied",[654,1530,1468],{"class":664},[654,1532,1533,1535,1537,1539,1541],{"class":656,"line":715},[654,1534,1455],{"class":668},[654,1536,1475],{"class":795},[654,1538,1478],{"class":736},[654,1540,1481],{"class":795},[654,1542,1543],{"class":668}," audit.actor.id, audit.action\n",[654,1545,1546,1548,1551,1553,1556],{"class":656,"line":722},[654,1547,1455],{"class":668},[654,1549,1550],{"class":795},"order",[654,1552,1481],{"class":795},[654,1554,1555],{"class":668}," count_ ",[654,1557,1558],{"class":795},"desc\n",[619,1560,1561],{},"Splitting datasets means the audit dataset can have a longer retention (7y), tighter access controls, and a separate billing line, without touching the rest of your pipeline.",[636,1563,1565],{"id":1564},"audit-logs-in-postgres","Audit logs in Postgres",[641,1567,1568,1821],{},[644,1569,1571],{"className":646,"code":1570,"filename":648,"language":649,"meta":650,"style":650},"import { auditOnly } from 'evlog'\nimport type { DrainContext } from 'evlog'\n\nconst postgresAudit = async (ctx: DrainContext) => {\n  await db.insert(auditEvents).values({\n    id: ctx.event.audit!.idempotencyKey,\n    timestamp: new Date(ctx.event.timestamp),\n    payload: ctx.event,\n  }).onConflictDoNothing()\n}\n\nnitro.hooks.hook('evlog:drain', auditOnly(postgresAudit, { await: true }))\n",[623,1572,1573,1591,1613,1617,1650,1680,1706,1736,1752,1768,1774,1779],{"__ignoreMap":650},[654,1574,1575,1577,1579,1581,1583,1585,1587,1589],{"class":656,"line":657},[654,1576,661],{"class":660},[654,1578,665],{"class":664},[654,1580,669],{"class":668},[654,1582,678],{"class":664},[654,1584,681],{"class":660},[654,1586,684],{"class":664},[654,1588,688],{"class":687},[654,1590,691],{"class":664},[654,1592,1593,1595,1598,1600,1603,1605,1607,1609,1611],{"class":656,"line":694},[654,1594,661],{"class":660},[654,1596,1597],{"class":660}," type",[654,1599,665],{"class":664},[654,1601,1602],{"class":668}," DrainContext",[654,1604,678],{"class":664},[654,1606,681],{"class":660},[654,1608,684],{"class":664},[654,1610,688],{"class":687},[654,1612,691],{"class":664},[654,1614,1615],{"class":656,"line":715},[654,1616,719],{"emptyLinePlaceholder":718},[654,1618,1619,1622,1625,1628,1631,1634,1638,1640,1642,1644,1647],{"class":656,"line":722},[654,1620,1621],{"class":866},"const",[654,1623,1624],{"class":668}," postgresAudit ",[654,1626,1627],{"class":664},"=",[654,1629,1630],{"class":866}," async",[654,1632,1633],{"class":664}," (",[654,1635,1637],{"class":1636},"sHdIc","ctx",[654,1639,778],{"class":664},[654,1641,1602],{"class":877},[654,1643,801],{"class":664},[654,1645,1646],{"class":866}," =>",[654,1648,1649],{"class":664}," {\n",[654,1651,1652,1655,1658,1660,1663,1665,1668,1670,1672,1675,1677],{"class":656,"line":758},[654,1653,1654],{"class":660},"  await",[654,1656,1657],{"class":668}," db",[654,1659,728],{"class":664},[654,1661,1662],{"class":736},"insert",[654,1664,740],{"class":774},[654,1666,1667],{"class":668},"auditEvents",[654,1669,801],{"class":774},[654,1671,728],{"class":664},[654,1673,1674],{"class":736},"values",[654,1676,740],{"class":774},[654,1678,1679],{"class":664},"{\n",[654,1681,1682,1685,1687,1690,1692,1695,1697,1699,1702,1704],{"class":656,"line":827},[654,1683,1684],{"class":774},"    id",[654,1686,778],{"class":664},[654,1688,1689],{"class":668}," ctx",[654,1691,728],{"class":664},[654,1693,1694],{"class":668},"event",[654,1696,728],{"class":664},[654,1698,867],{"class":668},[654,1700,1701],{"class":664},"!.",[654,1703,1017],{"class":668},[654,1705,824],{"class":664},[654,1707,1708,1711,1713,1716,1719,1721,1723,1725,1727,1729,1732,1734],{"class":656,"line":845},[654,1709,1710],{"class":774},"    timestamp",[654,1712,778],{"class":664},[654,1714,1715],{"class":664}," new",[654,1717,1718],{"class":736}," Date",[654,1720,740],{"class":774},[654,1722,1637],{"class":668},[654,1724,728],{"class":664},[654,1726,1694],{"class":668},[654,1728,728],{"class":664},[654,1730,1731],{"class":668},"timestamp",[654,1733,801],{"class":774},[654,1735,824],{"class":664},[654,1737,1739,1742,1744,1746,1748,1750],{"class":656,"line":1738},8,[654,1740,1741],{"class":774},"    payload",[654,1743,778],{"class":664},[654,1745,1689],{"class":668},[654,1747,728],{"class":664},[654,1749,1694],{"class":668},[654,1751,824],{"class":664},[654,1753,1755,1758,1760,1762,1765],{"class":656,"line":1754},9,[654,1756,1757],{"class":664},"  }",[654,1759,801],{"class":774},[654,1761,728],{"class":664},[654,1763,1764],{"class":736},"onConflictDoNothing",[654,1766,1767],{"class":774},"()\n",[654,1769,1771],{"class":656,"line":1770},10,[654,1772,1773],{"class":664},"}\n",[654,1775,1777],{"class":656,"line":1776},11,[654,1778,719],{"emptyLinePlaceholder":718},[654,1780,1782,1784,1786,1788,1790,1792,1794,1796,1798,1800,1802,1804,1807,1809,1811,1813,1815,1817,1819],{"class":656,"line":1781},12,[654,1783,725],{"class":668},[654,1785,728],{"class":664},[654,1787,731],{"class":668},[654,1789,728],{"class":664},[654,1791,737],{"class":736},[654,1793,740],{"class":668},[654,1795,743],{"class":664},[654,1797,746],{"class":687},[654,1799,743],{"class":664},[654,1801,672],{"class":664},[654,1803,669],{"class":736},[654,1805,1806],{"class":668},"(postgresAudit",[654,1808,672],{"class":664},[654,1810,665],{"class":664},[654,1812,833],{"class":774},[654,1814,778],{"class":664},[654,1816,839],{"class":838},[654,1818,678],{"class":664},[654,1820,848],{"class":668},[644,1822,1827],{"className":1823,"code":1824,"filename":1825,"language":1826,"meta":650,"style":650},"language-sql shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","SELECT id, timestamp, payload->'audit'->>'action' AS action,\n       payload->'audit'->>'outcome' AS outcome\nFROM audit_events\nWHERE id = 'ak_8f3c4b2a1e5d6f7c';\n\n--          id          |       timestamp       |     action      | outcome\n-- ---------------------+-----------------------+-----------------+---------\n--  ak_8f3c4b2a1e5d6f7c | 2026-04-24 10:23:45.6 | invoice.refund  | success\n","Output — audit_events row","sql",[623,1828,1829,1868,1894,1902,1921,1925,1931,1936],{"__ignoreMap":650},[654,1830,1831,1834,1837,1839,1842,1845,1847,1849,1851,1854,1856,1858,1860,1863,1866],{"class":656,"line":657},[654,1832,1833],{"class":795},"SELECT",[654,1835,1836],{"class":668}," id, ",[654,1838,1731],{"class":866},[654,1840,1841],{"class":668},", payload",[654,1843,1844],{"class":664},"->",[654,1846,743],{"class":664},[654,1848,867],{"class":687},[654,1850,743],{"class":664},[654,1852,1853],{"class":664},"->>",[654,1855,743],{"class":664},[654,1857,878],{"class":687},[654,1859,743],{"class":664},[654,1861,1862],{"class":795}," AS",[654,1864,1865],{"class":795}," action",[654,1867,824],{"class":668},[654,1869,1870,1873,1875,1877,1879,1881,1883,1885,1887,1889,1891],{"class":656,"line":694},[654,1871,1872],{"class":668},"       payload",[654,1874,1844],{"class":664},[654,1876,743],{"class":664},[654,1878,867],{"class":687},[654,1880,743],{"class":664},[654,1882,1853],{"class":664},[654,1884,743],{"class":664},[654,1886,985],{"class":687},[654,1888,743],{"class":664},[654,1890,1862],{"class":795},[654,1892,1893],{"class":668}," outcome\n",[654,1895,1896,1899],{"class":656,"line":715},[654,1897,1898],{"class":795},"FROM",[654,1900,1901],{"class":668}," audit_events\n",[654,1903,1904,1907,1910,1912,1914,1916,1918],{"class":656,"line":722},[654,1905,1906],{"class":795},"WHERE",[654,1908,1909],{"class":668}," id ",[654,1911,1627],{"class":664},[654,1913,684],{"class":664},[654,1915,1026],{"class":687},[654,1917,743],{"class":664},[654,1919,1920],{"class":668},";\n",[654,1922,1923],{"class":656,"line":758},[654,1924,719],{"emptyLinePlaceholder":718},[654,1926,1927],{"class":656,"line":827},[654,1928,1930],{"class":1929},"sHwdD","--          id          |       timestamp       |     action      | outcome\n",[654,1932,1933],{"class":656,"line":845},[654,1934,1935],{"class":1929},"-- ---------------------+-----------------------+-----------------+---------\n",[654,1937,1938],{"class":656,"line":1738},[654,1939,1940],{"class":1929},"--  ak_8f3c4b2a1e5d6f7c | 2026-04-24 10:23:45.6 | invoice.refund  | success\n",[619,1942,1943,1944,1946,1947,1950],{},"The deterministic ",[623,1945,1017],{}," makes retries safe: duplicate inserts collapse via ",[623,1948,1949],{},"ON CONFLICT DO NOTHING",". Without it, a transient network blip during a retry would create a duplicate audit row, which is exactly what you don't want.",[636,1952,1954],{"id":1953},"test-what-you-recorded","Test what you recorded",[619,1956,1957,1960,1961,626,1964,1967,1968,778],{},[623,1958,1959],{},"mockAudit()"," captures every audit event on emit, from standalone ",[623,1962,1963],{},"audit()",[623,1965,1966],{},"log.audit()",", and ",[623,1969,1970],{},"log.set({ audit })",[644,1972,1974],{"className":646,"code":1973,"language":649,"meta":650,"style":650},"import { mockAudit } from 'evlog'\n\nit('refunds the invoice and records an audit', async () => {\n  const captured = mockAudit()\n\n  await refundInvoice({ id: 'inv_889' }, { actor: { type: 'user', id: 'u1' } })\n\n  captured.assertAudit({\n    action: 'invoice.refund',\n    target: { type: 'invoice', id: 'inv_889' },\n    outcome: 'success',\n  })\n\n  captured.restore()\n})\n",[623,1975,1976,1995,1999,2024,2039,2043,2106,2110,2124,2139,2172,2187,2193,2198,2210],{"__ignoreMap":650},[654,1977,1978,1980,1982,1985,1987,1989,1991,1993],{"class":656,"line":657},[654,1979,661],{"class":660},[654,1981,665],{"class":664},[654,1983,1984],{"class":668}," mockAudit",[654,1986,678],{"class":664},[654,1988,681],{"class":660},[654,1990,684],{"class":664},[654,1992,688],{"class":687},[654,1994,691],{"class":664},[654,1996,1997],{"class":656,"line":694},[654,1998,719],{"emptyLinePlaceholder":718},[654,2000,2001,2004,2006,2008,2011,2013,2015,2017,2020,2022],{"class":656,"line":715},[654,2002,2003],{"class":736},"it",[654,2005,740],{"class":668},[654,2007,743],{"class":664},[654,2009,2010],{"class":687},"refunds the invoice and records an audit",[654,2012,743],{"class":664},[654,2014,672],{"class":664},[654,2016,1630],{"class":866},[654,2018,2019],{"class":664}," ()",[654,2021,1646],{"class":866},[654,2023,1649],{"class":664},[654,2025,2026,2029,2032,2035,2037],{"class":656,"line":722},[654,2027,2028],{"class":866},"  const",[654,2030,2031],{"class":668}," captured",[654,2033,2034],{"class":664}," =",[654,2036,1984],{"class":736},[654,2038,1767],{"class":774},[654,2040,2041],{"class":656,"line":758},[654,2042,719],{"emptyLinePlaceholder":718},[654,2044,2045,2047,2050,2052,2054,2057,2059,2061,2063,2065,2068,2070,2073,2075,2077,2079,2081,2083,2085,2087,2089,2091,2093,2095,2098,2100,2102,2104],{"class":656,"line":827},[654,2046,1654],{"class":660},[654,2048,2049],{"class":736}," refundInvoice",[654,2051,740],{"class":774},[654,2053,771],{"class":664},[654,2055,2056],{"class":774}," id",[654,2058,778],{"class":664},[654,2060,684],{"class":664},[654,2062,976],{"class":687},[654,2064,743],{"class":664},[654,2066,2067],{"class":664}," },",[654,2069,665],{"class":664},[654,2071,2072],{"class":774}," actor",[654,2074,778],{"class":664},[654,2076,665],{"class":664},[654,2078,1597],{"class":774},[654,2080,778],{"class":664},[654,2082,684],{"class":664},[654,2084,914],{"class":687},[654,2086,743],{"class":664},[654,2088,672],{"class":664},[654,2090,2056],{"class":774},[654,2092,778],{"class":664},[654,2094,684],{"class":664},[654,2096,2097],{"class":687},"u1",[654,2099,743],{"class":664},[654,2101,678],{"class":664},[654,2103,678],{"class":664},[654,2105,1496],{"class":774},[654,2107,2108],{"class":656,"line":845},[654,2109,719],{"emptyLinePlaceholder":718},[654,2111,2112,2115,2117,2120,2122],{"class":656,"line":1738},[654,2113,2114],{"class":668},"  captured",[654,2116,728],{"class":664},[654,2118,2119],{"class":736},"assertAudit",[654,2121,740],{"class":774},[654,2123,1679],{"class":664},[654,2125,2126,2129,2131,2133,2135,2137],{"class":656,"line":1754},[654,2127,2128],{"class":774},"    action",[654,2130,778],{"class":664},[654,2132,684],{"class":664},[654,2134,887],{"class":687},[654,2136,743],{"class":664},[654,2138,824],{"class":664},[654,2140,2141,2144,2146,2148,2150,2152,2154,2156,2158,2160,2162,2164,2166,2168,2170],{"class":656,"line":1770},[654,2142,2143],{"class":774},"    target",[654,2145,778],{"class":664},[654,2147,665],{"class":664},[654,2149,1597],{"class":774},[654,2151,778],{"class":664},[654,2153,684],{"class":664},[654,2155,959],{"class":687},[654,2157,743],{"class":664},[654,2159,672],{"class":664},[654,2161,2056],{"class":774},[654,2163,778],{"class":664},[654,2165,684],{"class":664},[654,2167,976],{"class":687},[654,2169,743],{"class":664},[654,2171,842],{"class":664},[654,2173,2174,2177,2179,2181,2183,2185],{"class":656,"line":1776},[654,2175,2176],{"class":774},"    outcome",[654,2178,778],{"class":664},[654,2180,684],{"class":664},[654,2182,994],{"class":687},[654,2184,743],{"class":664},[654,2186,824],{"class":664},[654,2188,2189,2191],{"class":656,"line":1781},[654,2190,1757],{"class":664},[654,2192,1496],{"class":774},[654,2194,2196],{"class":656,"line":2195},13,[654,2197,719],{"emptyLinePlaceholder":718},[654,2199,2201,2203,2205,2208],{"class":656,"line":2200},14,[654,2202,2114],{"class":668},[654,2204,728],{"class":664},[654,2206,2207],{"class":736},"restore",[654,2209,1767],{"class":774},[654,2211,2213,2215],{"class":656,"line":2212},15,[654,2214,1420],{"class":664},[654,2216,1496],{"class":668},[619,2218,2219,2220,2223,2224,2227,2228,728],{},"Prefer ",[623,2221,2222],{},"assertAudit()"," when a missing audit should fail the test with a readable message. 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