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OpenTelemetry","\u002Fcompare\u002Fopentelemetry","8.compare\u002F2.opentelemetry",{"title":596,"path":597,"stem":598,"icon":572},"evlog vs LogTape","\u002Fcompare\u002Flogtape","8.compare\u002F3.logtape",{"title":600,"path":601,"stem":602,"icon":572},"evlog vs Winston: formats and request events","\u002Fcompare\u002Fwinston","8.compare\u002F4.winston",{"title":604,"path":605,"stem":606,"icon":572},"evlog vs Consola: reporters and request context","\u002Fcompare\u002Fconsola","8.compare\u002F5.consola",{"id":608,"title":609,"body":610,"description":2458,"extension":2459,"links":2460,"meta":2465,"navigation":2466,"path":421,"seo":2467,"stem":422,"__hash__":2468},"docs\u002F5.use-cases\u002F4.audit\u002F06.recipes.md","Recipes & Reference",{"type":611,"value":612,"toc":2451},"minimark",[613,630,635,1243,1252,1256,1554,1557,1561,1936,1946,1950,1966,2212,2226,2237,2241,2441,2447],[614,615,616,617,621,622,625,626,629],"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 (",[618,619,620],"code",{},"auditOnly",", ",[618,623,624],{},"signed",", optional ",[618,627,628],{},"await: true",") over different drains.",[631,632,634],"h2",{"id":633},"audit-logs-on-disk","Audit logs on disk",[636,637,638,844],"code-group",{},[639,640,646],"pre",{"className":641,"code":642,"filename":643,"language":644,"meta":645,"style":645},"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","",[618,647,648,687,708,715,751,820,838],{"__ignoreMap":645},[649,650,653,657,661,665,668,671,674,677,680,684],"span",{"class":651,"line":652},"line",1,[649,654,656],{"class":655},"s7zQu","import",[649,658,660],{"class":659},"sMK4o"," {",[649,662,664],{"class":663},"sTEyZ"," auditOnly",[649,666,667],{"class":659},",",[649,669,670],{"class":663}," signed",[649,672,673],{"class":659}," }",[649,675,676],{"class":655}," from",[649,678,679],{"class":659}," '",[649,681,683],{"class":682},"sfazB","evlog",[649,685,686],{"class":659},"'\n",[649,688,690,692,694,697,699,701,703,706],{"class":651,"line":689},2,[649,691,656],{"class":655},[649,693,660],{"class":659},[649,695,696],{"class":663}," createFsDrain",[649,698,673],{"class":659},[649,700,676],{"class":655},[649,702,679],{"class":659},[649,704,705],{"class":682},"evlog\u002Ffs",[649,707,686],{"class":659},[649,709,711],{"class":651,"line":710},3,[649,712,714],{"emptyLinePlaceholder":713},true,"\n",[649,716,718,721,724,727,729,733,736,739,742,744,746,748],{"class":651,"line":717},4,[649,719,720],{"class":663},"nitro",[649,722,723],{"class":659},".",[649,725,726],{"class":663},"hooks",[649,728,723],{"class":659},[649,730,732],{"class":731},"s2Zo4","hook",[649,734,735],{"class":663},"(",[649,737,738],{"class":659},"'",[649,740,741],{"class":682},"evlog:drain",[649,743,738],{"class":659},[649,745,667],{"class":659},[649,747,664],{"class":731},[649,749,750],{"class":663},"(\n",[649,752,754,757,759,762,764,767,771,774,776,779,781,783,786,788,792,794,797,799,801,804,806,808,811,813,815,817],{"class":651,"line":753},5,[649,755,756],{"class":731},"  signed",[649,758,735],{"class":663},[649,760,761],{"class":731},"createFsDrain",[649,763,735],{"class":663},[649,765,766],{"class":659},"{",[649,768,770],{"class":769},"swJcz"," dir",[649,772,773],{"class":659},":",[649,775,679],{"class":659},[649,777,778],{"class":682},".audit",[649,780,738],{"class":659},[649,782,667],{"class":659},[649,784,785],{"class":769}," maxFiles",[649,787,773],{"class":659},[649,789,791],{"class":790},"sbssI"," 30",[649,793,673],{"class":659},[649,795,796],{"class":663},")",[649,798,667],{"class":659},[649,800,660],{"class":659},[649,802,803],{"class":769}," strategy",[649,805,773],{"class":659},[649,807,679],{"class":659},[649,809,810],{"class":682},"hash-chain",[649,812,738],{"class":659},[649,814,673],{"class":659},[649,816,796],{"class":663},[649,818,819],{"class":659},",\n",[649,821,823,826,829,831,835],{"class":651,"line":822},6,[649,824,825],{"class":659},"  {",[649,827,828],{"class":769}," await",[649,830,773],{"class":659},[649,832,834],{"class":833},"sfNiH"," true",[649,836,837],{"class":659}," },\n",[649,839,841],{"class":651,"line":840},7,[649,842,843],{"class":663},"))\n",[639,845,850],{"className":846,"code":847,"filename":848,"language":849,"meta":645,"style":645},"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",[618,851,852,1055],{"__ignoreMap":645},[649,853,854,856,859,863,865,868,870,874,876,878,880,883,885,887,889,892,894,896,898,901,903,905,907,910,912,914,916,919,921,923,925,928,930,933,935,938,940,942,944,946,948,950,952,955,957,959,961,963,965,967,969,972,974,976,978,981,983,985,987,990,992,994,996,999,1001,1003,1006,1008,1010,1013,1015,1017,1019,1022,1024,1026,1028,1031,1033,1036,1038,1041,1043,1045,1047,1050,1052],{"class":651,"line":652},[649,855,766],{"class":659},[649,857,858],{"class":659},"\"",[649,860,862],{"class":861},"spNyl","audit",[649,864,858],{"class":659},[649,866,867],{"class":659},":{",[649,869,858],{"class":659},[649,871,873],{"class":872},"sBMFI","action",[649,875,858],{"class":659},[649,877,773],{"class":659},[649,879,858],{"class":659},[649,881,882],{"class":682},"invoice.refund",[649,884,858],{"class":659},[649,886,667],{"class":659},[649,888,858],{"class":659},[649,890,891],{"class":872},"actor",[649,893,858],{"class":659},[649,895,867],{"class":659},[649,897,858],{"class":659},[649,899,900],{"class":790},"type",[649,902,858],{"class":659},[649,904,773],{"class":659},[649,906,858],{"class":659},[649,908,909],{"class":682},"user",[649,911,858],{"class":659},[649,913,667],{"class":659},[649,915,858],{"class":659},[649,917,918],{"class":790},"id",[649,920,858],{"class":659},[649,922,773],{"class":659},[649,924,858],{"class":659},[649,926,927],{"class":682},"usr_42",[649,929,858],{"class":659},[649,931,932],{"class":659},"},",[649,934,858],{"class":659},[649,936,937],{"class":872},"target",[649,939,858],{"class":659},[649,941,867],{"class":659},[649,943,858],{"class":659},[649,945,900],{"class":790},[649,947,858],{"class":659},[649,949,773],{"class":659},[649,951,858],{"class":659},[649,953,954],{"class":682},"invoice",[649,956,858],{"class":659},[649,958,667],{"class":659},[649,960,858],{"class":659},[649,962,918],{"class":790},[649,964,858],{"class":659},[649,966,773],{"class":659},[649,968,858],{"class":659},[649,970,971],{"class":682},"inv_889",[649,973,858],{"class":659},[649,975,932],{"class":659},[649,977,858],{"class":659},[649,979,980],{"class":872},"outcome",[649,982,858],{"class":659},[649,984,773],{"class":659},[649,986,858],{"class":659},[649,988,989],{"class":682},"success",[649,991,858],{"class":659},[649,993,667],{"class":659},[649,995,858],{"class":659},[649,997,998],{"class":872},"version",[649,1000,858],{"class":659},[649,1002,773],{"class":659},[649,1004,1005],{"class":790},"1",[649,1007,667],{"class":659},[649,1009,858],{"class":659},[649,1011,1012],{"class":872},"idempotencyKey",[649,1014,858],{"class":659},[649,1016,773],{"class":659},[649,1018,858],{"class":659},[649,1020,1021],{"class":682},"ak_8f3c4b2a1e5d6f7c",[649,1023,858],{"class":659},[649,1025,667],{"class":659},[649,1027,858],{"class":659},[649,1029,1030],{"class":872},"prevHash",[649,1032,858],{"class":659},[649,1034,1035],{"class":659},":null,",[649,1037,858],{"class":659},[649,1039,1040],{"class":872},"hash",[649,1042,858],{"class":659},[649,1044,773],{"class":659},[649,1046,858],{"class":659},[649,1048,1049],{"class":682},"3f2c8e1a...",[649,1051,858],{"class":659},[649,1053,1054],{"class":659},"}}\n",[649,1056,1057,1059,1061,1063,1065,1067,1069,1071,1073,1075,1077,1080,1082,1084,1086,1088,1090,1092,1094,1096,1098,1100,1102,1104,1106,1108,1110,1112,1114,1116,1118,1120,1122,1124,1126,1128,1130,1132,1134,1136,1138,1140,1142,1144,1146,1148,1150,1152,1154,1156,1158,1161,1163,1165,1167,1169,1171,1173,1175,1177,1179,1181,1183,1185,1187,1189,1191,1193,1195,1197,1199,1201,1203,1206,1208,1210,1212,1214,1216,1218,1220,1222,1224,1226,1228,1230,1232,1234,1236,1239,1241],{"class":651,"line":689},[649,1058,766],{"class":659},[649,1060,858],{"class":659},[649,1062,862],{"class":861},[649,1064,858],{"class":659},[649,1066,867],{"class":659},[649,1068,858],{"class":659},[649,1070,873],{"class":872},[649,1072,858],{"class":659},[649,1074,773],{"class":659},[649,1076,858],{"class":659},[649,1078,1079],{"class":682},"user.update",[649,1081,858],{"class":659},[649,1083,667],{"class":659},[649,1085,858],{"class":659},[649,1087,891],{"class":872},[649,1089,858],{"class":659},[649,1091,867],{"class":659},[649,1093,858],{"class":659},[649,1095,900],{"class":790},[649,1097,858],{"class":659},[649,1099,773],{"class":659},[649,1101,858],{"class":659},[649,1103,909],{"class":682},[649,1105,858],{"class":659},[649,1107,667],{"class":659},[649,1109,858],{"class":659},[649,1111,918],{"class":790},[649,1113,858],{"class":659},[649,1115,773],{"class":659},[649,1117,858],{"class":659},[649,1119,927],{"class":682},[649,1121,858],{"class":659},[649,1123,932],{"class":659},[649,1125,858],{"class":659},[649,1127,937],{"class":872},[649,1129,858],{"class":659},[649,1131,867],{"class":659},[649,1133,858],{"class":659},[649,1135,900],{"class":790},[649,1137,858],{"class":659},[649,1139,773],{"class":659},[649,1141,858],{"class":659},[649,1143,909],{"class":682},[649,1145,858],{"class":659},[649,1147,667],{"class":659},[649,1149,858],{"class":659},[649,1151,918],{"class":790},[649,1153,858],{"class":659},[649,1155,773],{"class":659},[649,1157,858],{"class":659},[649,1159,1160],{"class":682},"usr_99",[649,1162,858],{"class":659},[649,1164,932],{"class":659},[649,1166,858],{"class":659},[649,1168,980],{"class":872},[649,1170,858],{"class":659},[649,1172,773],{"class":659},[649,1174,858],{"class":659},[649,1176,989],{"class":682},[649,1178,858],{"class":659},[649,1180,667],{"class":659},[649,1182,858],{"class":659},[649,1184,998],{"class":872},[649,1186,858],{"class":659},[649,1188,773],{"class":659},[649,1190,1005],{"class":790},[649,1192,667],{"class":659},[649,1194,858],{"class":659},[649,1196,1012],{"class":872},[649,1198,858],{"class":659},[649,1200,773],{"class":659},[649,1202,858],{"class":659},[649,1204,1205],{"class":682},"ak_5e7d8f9a0b1c2d3e",[649,1207,858],{"class":659},[649,1209,667],{"class":659},[649,1211,858],{"class":659},[649,1213,1030],{"class":872},[649,1215,858],{"class":659},[649,1217,773],{"class":659},[649,1219,858],{"class":659},[649,1221,1049],{"class":682},[649,1223,858],{"class":659},[649,1225,667],{"class":659},[649,1227,858],{"class":659},[649,1229,1040],{"class":872},[649,1231,858],{"class":659},[649,1233,773],{"class":659},[649,1235,858],{"class":659},[649,1237,1238],{"class":682},"9a1b4d7c...",[649,1240,858],{"class":659},[649,1242,1054],{"class":659},[614,1244,1245,1246,1248,1249,1251],{},"Each line's ",[618,1247,1030],{}," matches the previous line's ",[618,1250,1040],{},". Tampering with any row breaks the chain forward of that point, and a verifier replays the hashes and reports the first mismatch.",[631,1253,1255],{"id":1254},"audit-logs-to-a-dedicated-axiom-dataset","Audit logs to a dedicated Axiom dataset",[636,1257,1258,1424,1492],{},[639,1259,1261],{"className":641,"code":1260,"filename":643,"language":644,"meta":645,"style":645},"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",[618,1262,1263,1281,1301,1305,1348,1374,1420],{"__ignoreMap":645},[649,1264,1265,1267,1269,1271,1273,1275,1277,1279],{"class":651,"line":652},[649,1266,656],{"class":655},[649,1268,660],{"class":659},[649,1270,664],{"class":663},[649,1272,673],{"class":659},[649,1274,676],{"class":655},[649,1276,679],{"class":659},[649,1278,683],{"class":682},[649,1280,686],{"class":659},[649,1282,1283,1285,1287,1290,1292,1294,1296,1299],{"class":651,"line":689},[649,1284,656],{"class":655},[649,1286,660],{"class":659},[649,1288,1289],{"class":663}," createAxiomDrain",[649,1291,673],{"class":659},[649,1293,676],{"class":655},[649,1295,679],{"class":659},[649,1297,1298],{"class":682},"evlog\u002Faxiom",[649,1300,686],{"class":659},[649,1302,1303],{"class":651,"line":710},[649,1304,714],{"emptyLinePlaceholder":713},[649,1306,1307,1309,1311,1313,1315,1317,1319,1321,1323,1325,1327,1329,1331,1333,1336,1338,1340,1342,1344,1346],{"class":651,"line":717},[649,1308,720],{"class":663},[649,1310,723],{"class":659},[649,1312,726],{"class":663},[649,1314,723],{"class":659},[649,1316,732],{"class":731},[649,1318,735],{"class":663},[649,1320,738],{"class":659},[649,1322,741],{"class":682},[649,1324,738],{"class":659},[649,1326,667],{"class":659},[649,1328,1289],{"class":731},[649,1330,735],{"class":663},[649,1332,766],{"class":659},[649,1334,1335],{"class":769}," dataset",[649,1337,773],{"class":659},[649,1339,679],{"class":659},[649,1341,99],{"class":682},[649,1343,738],{"class":659},[649,1345,673],{"class":659},[649,1347,843],{"class":663},[649,1349,1350,1352,1354,1356,1358,1360,1362,1364,1366,1368,1370,1372],{"class":651,"line":753},[649,1351,720],{"class":663},[649,1353,723],{"class":659},[649,1355,726],{"class":663},[649,1357,723],{"class":659},[649,1359,732],{"class":731},[649,1361,735],{"class":663},[649,1363,738],{"class":659},[649,1365,741],{"class":682},[649,1367,738],{"class":659},[649,1369,667],{"class":659},[649,1371,664],{"class":731},[649,1373,750],{"class":663},[649,1375,1376,1379,1381,1383,1385,1387,1389,1391,1393,1395,1398,1400,1403,1405,1408,1410,1413,1416,1418],{"class":651,"line":822},[649,1377,1378],{"class":731},"  createAxiomDrain",[649,1380,735],{"class":663},[649,1382,766],{"class":659},[649,1384,1335],{"class":769},[649,1386,773],{"class":659},[649,1388,679],{"class":659},[649,1390,862],{"class":682},[649,1392,738],{"class":659},[649,1394,667],{"class":659},[649,1396,1397],{"class":769}," apiKey",[649,1399,773],{"class":659},[649,1401,1402],{"class":663}," process",[649,1404,723],{"class":659},[649,1406,1407],{"class":663},"env",[649,1409,723],{"class":659},[649,1411,1412],{"class":663},"AXIOM_AUDIT_API_KEY ",[649,1414,1415],{"class":659},"}",[649,1417,796],{"class":663},[649,1419,819],{"class":659},[649,1421,1422],{"class":651,"line":840},[649,1423,843],{"class":663},[639,1425,1430],{"className":1426,"code":1427,"filename":1428,"language":1429,"meta":645,"style":645},"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",[618,1431,1432,1446,1464],{"__ignoreMap":645},[649,1433,1434,1437,1439,1441,1443],{"class":651,"line":652},[649,1435,1436],{"class":663},"[",[649,1438,738],{"class":659},[649,1440,862],{"class":682},[649,1442,738],{"class":659},[649,1444,1445],{"class":663},"]\n",[649,1447,1448,1451,1454,1457,1459,1461],{"class":651,"line":689},[649,1449,1450],{"class":663},"| ",[649,1452,1453],{"class":790},"where",[649,1455,1456],{"class":663}," audit.action == ",[649,1458,858],{"class":659},[649,1460,882],{"class":682},[649,1462,1463],{"class":659},"\"\n",[649,1465,1466,1468,1471,1474,1477,1480,1483,1486,1489],{"class":651,"line":710},[649,1467,1450],{"class":663},[649,1469,1470],{"class":790},"summarize",[649,1472,1473],{"class":731}," count()",[649,1475,1476],{"class":790}," by",[649,1478,1479],{"class":663}," audit.outcome, ",[649,1481,1482],{"class":731},"bin",[649,1484,1485],{"class":663},"(_time, ",[649,1487,1488],{"class":790},"1h",[649,1490,1491],{"class":663},")\n",[639,1493,1496],{"className":1426,"code":1494,"filename":1495,"language":1429,"meta":645,"style":645},"['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",[618,1497,1498,1510,1526,1539],{"__ignoreMap":645},[649,1499,1500,1502,1504,1506,1508],{"class":651,"line":652},[649,1501,1436],{"class":663},[649,1503,738],{"class":659},[649,1505,862],{"class":682},[649,1507,738],{"class":659},[649,1509,1445],{"class":663},[649,1511,1512,1514,1516,1519,1521,1524],{"class":651,"line":689},[649,1513,1450],{"class":663},[649,1515,1453],{"class":790},[649,1517,1518],{"class":663}," audit.outcome == ",[649,1520,858],{"class":659},[649,1522,1523],{"class":682},"denied",[649,1525,1463],{"class":659},[649,1527,1528,1530,1532,1534,1536],{"class":651,"line":710},[649,1529,1450],{"class":663},[649,1531,1470],{"class":790},[649,1533,1473],{"class":731},[649,1535,1476],{"class":790},[649,1537,1538],{"class":663}," audit.actor.id, audit.action\n",[649,1540,1541,1543,1546,1548,1551],{"class":651,"line":717},[649,1542,1450],{"class":663},[649,1544,1545],{"class":790},"order",[649,1547,1476],{"class":790},[649,1549,1550],{"class":663}," count_ ",[649,1552,1553],{"class":790},"desc\n",[614,1555,1556],{},"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.",[631,1558,1560],{"id":1559},"audit-logs-in-postgres","Audit logs in Postgres",[636,1562,1563,1816],{},[639,1564,1566],{"className":641,"code":1565,"filename":643,"language":644,"meta":645,"style":645},"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",[618,1567,1568,1586,1608,1612,1645,1675,1701,1731,1747,1763,1769,1774],{"__ignoreMap":645},[649,1569,1570,1572,1574,1576,1578,1580,1582,1584],{"class":651,"line":652},[649,1571,656],{"class":655},[649,1573,660],{"class":659},[649,1575,664],{"class":663},[649,1577,673],{"class":659},[649,1579,676],{"class":655},[649,1581,679],{"class":659},[649,1583,683],{"class":682},[649,1585,686],{"class":659},[649,1587,1588,1590,1593,1595,1598,1600,1602,1604,1606],{"class":651,"line":689},[649,1589,656],{"class":655},[649,1591,1592],{"class":655}," type",[649,1594,660],{"class":659},[649,1596,1597],{"class":663}," DrainContext",[649,1599,673],{"class":659},[649,1601,676],{"class":655},[649,1603,679],{"class":659},[649,1605,683],{"class":682},[649,1607,686],{"class":659},[649,1609,1610],{"class":651,"line":710},[649,1611,714],{"emptyLinePlaceholder":713},[649,1613,1614,1617,1620,1623,1626,1629,1633,1635,1637,1639,1642],{"class":651,"line":717},[649,1615,1616],{"class":861},"const",[649,1618,1619],{"class":663}," postgresAudit ",[649,1621,1622],{"class":659},"=",[649,1624,1625],{"class":861}," async",[649,1627,1628],{"class":659}," (",[649,1630,1632],{"class":1631},"sHdIc","ctx",[649,1634,773],{"class":659},[649,1636,1597],{"class":872},[649,1638,796],{"class":659},[649,1640,1641],{"class":861}," =>",[649,1643,1644],{"class":659}," {\n",[649,1646,1647,1650,1653,1655,1658,1660,1663,1665,1667,1670,1672],{"class":651,"line":753},[649,1648,1649],{"class":655},"  await",[649,1651,1652],{"class":663}," db",[649,1654,723],{"class":659},[649,1656,1657],{"class":731},"insert",[649,1659,735],{"class":769},[649,1661,1662],{"class":663},"auditEvents",[649,1664,796],{"class":769},[649,1666,723],{"class":659},[649,1668,1669],{"class":731},"values",[649,1671,735],{"class":769},[649,1673,1674],{"class":659},"{\n",[649,1676,1677,1680,1682,1685,1687,1690,1692,1694,1697,1699],{"class":651,"line":822},[649,1678,1679],{"class":769},"    id",[649,1681,773],{"class":659},[649,1683,1684],{"class":663}," ctx",[649,1686,723],{"class":659},[649,1688,1689],{"class":663},"event",[649,1691,723],{"class":659},[649,1693,862],{"class":663},[649,1695,1696],{"class":659},"!.",[649,1698,1012],{"class":663},[649,1700,819],{"class":659},[649,1702,1703,1706,1708,1711,1714,1716,1718,1720,1722,1724,1727,1729],{"class":651,"line":840},[649,1704,1705],{"class":769},"    timestamp",[649,1707,773],{"class":659},[649,1709,1710],{"class":659}," new",[649,1712,1713],{"class":731}," Date",[649,1715,735],{"class":769},[649,1717,1632],{"class":663},[649,1719,723],{"class":659},[649,1721,1689],{"class":663},[649,1723,723],{"class":659},[649,1725,1726],{"class":663},"timestamp",[649,1728,796],{"class":769},[649,1730,819],{"class":659},[649,1732,1734,1737,1739,1741,1743,1745],{"class":651,"line":1733},8,[649,1735,1736],{"class":769},"    payload",[649,1738,773],{"class":659},[649,1740,1684],{"class":663},[649,1742,723],{"class":659},[649,1744,1689],{"class":663},[649,1746,819],{"class":659},[649,1748,1750,1753,1755,1757,1760],{"class":651,"line":1749},9,[649,1751,1752],{"class":659},"  }",[649,1754,796],{"class":769},[649,1756,723],{"class":659},[649,1758,1759],{"class":731},"onConflictDoNothing",[649,1761,1762],{"class":769},"()\n",[649,1764,1766],{"class":651,"line":1765},10,[649,1767,1768],{"class":659},"}\n",[649,1770,1772],{"class":651,"line":1771},11,[649,1773,714],{"emptyLinePlaceholder":713},[649,1775,1777,1779,1781,1783,1785,1787,1789,1791,1793,1795,1797,1799,1802,1804,1806,1808,1810,1812,1814],{"class":651,"line":1776},12,[649,1778,720],{"class":663},[649,1780,723],{"class":659},[649,1782,726],{"class":663},[649,1784,723],{"class":659},[649,1786,732],{"class":731},[649,1788,735],{"class":663},[649,1790,738],{"class":659},[649,1792,741],{"class":682},[649,1794,738],{"class":659},[649,1796,667],{"class":659},[649,1798,664],{"class":731},[649,1800,1801],{"class":663},"(postgresAudit",[649,1803,667],{"class":659},[649,1805,660],{"class":659},[649,1807,828],{"class":769},[649,1809,773],{"class":659},[649,1811,834],{"class":833},[649,1813,673],{"class":659},[649,1815,843],{"class":663},[639,1817,1822],{"className":1818,"code":1819,"filename":1820,"language":1821,"meta":645,"style":645},"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",[618,1823,1824,1863,1889,1897,1916,1920,1926,1931],{"__ignoreMap":645},[649,1825,1826,1829,1832,1834,1837,1840,1842,1844,1846,1849,1851,1853,1855,1858,1861],{"class":651,"line":652},[649,1827,1828],{"class":790},"SELECT",[649,1830,1831],{"class":663}," id, ",[649,1833,1726],{"class":861},[649,1835,1836],{"class":663},", payload",[649,1838,1839],{"class":659},"->",[649,1841,738],{"class":659},[649,1843,862],{"class":682},[649,1845,738],{"class":659},[649,1847,1848],{"class":659},"->>",[649,1850,738],{"class":659},[649,1852,873],{"class":682},[649,1854,738],{"class":659},[649,1856,1857],{"class":790}," AS",[649,1859,1860],{"class":790}," action",[649,1862,819],{"class":663},[649,1864,1865,1868,1870,1872,1874,1876,1878,1880,1882,1884,1886],{"class":651,"line":689},[649,1866,1867],{"class":663},"       payload",[649,1869,1839],{"class":659},[649,1871,738],{"class":659},[649,1873,862],{"class":682},[649,1875,738],{"class":659},[649,1877,1848],{"class":659},[649,1879,738],{"class":659},[649,1881,980],{"class":682},[649,1883,738],{"class":659},[649,1885,1857],{"class":790},[649,1887,1888],{"class":663}," outcome\n",[649,1890,1891,1894],{"class":651,"line":710},[649,1892,1893],{"class":790},"FROM",[649,1895,1896],{"class":663}," audit_events\n",[649,1898,1899,1902,1905,1907,1909,1911,1913],{"class":651,"line":717},[649,1900,1901],{"class":790},"WHERE",[649,1903,1904],{"class":663}," id ",[649,1906,1622],{"class":659},[649,1908,679],{"class":659},[649,1910,1021],{"class":682},[649,1912,738],{"class":659},[649,1914,1915],{"class":663},";\n",[649,1917,1918],{"class":651,"line":753},[649,1919,714],{"emptyLinePlaceholder":713},[649,1921,1922],{"class":651,"line":822},[649,1923,1925],{"class":1924},"sHwdD","--          id          |       timestamp       |     action      | outcome\n",[649,1927,1928],{"class":651,"line":840},[649,1929,1930],{"class":1924},"-- ---------------------+-----------------------+-----------------+---------\n",[649,1932,1933],{"class":651,"line":1733},[649,1934,1935],{"class":1924},"--  ak_8f3c4b2a1e5d6f7c | 2026-04-24 10:23:45.6 | invoice.refund  | success\n",[614,1937,1938,1939,1941,1942,1945],{},"The deterministic ",[618,1940,1012],{}," makes retries safe: duplicate inserts collapse via ",[618,1943,1944],{},"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.",[631,1947,1949],{"id":1948},"test-what-you-recorded","Test what you recorded",[614,1951,1952,1955,1956,621,1959,1962,1963,773],{},[618,1953,1954],{},"mockAudit()"," captures every audit event on emit, from standalone ",[618,1957,1958],{},"audit()",[618,1960,1961],{},"log.audit()",", and ",[618,1964,1965],{},"log.set({ audit })",[639,1967,1969],{"className":641,"code":1968,"language":644,"meta":645,"style":645},"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",[618,1970,1971,1990,1994,2019,2034,2038,2101,2105,2119,2134,2167,2182,2188,2193,2205],{"__ignoreMap":645},[649,1972,1973,1975,1977,1980,1982,1984,1986,1988],{"class":651,"line":652},[649,1974,656],{"class":655},[649,1976,660],{"class":659},[649,1978,1979],{"class":663}," mockAudit",[649,1981,673],{"class":659},[649,1983,676],{"class":655},[649,1985,679],{"class":659},[649,1987,683],{"class":682},[649,1989,686],{"class":659},[649,1991,1992],{"class":651,"line":689},[649,1993,714],{"emptyLinePlaceholder":713},[649,1995,1996,1999,2001,2003,2006,2008,2010,2012,2015,2017],{"class":651,"line":710},[649,1997,1998],{"class":731},"it",[649,2000,735],{"class":663},[649,2002,738],{"class":659},[649,2004,2005],{"class":682},"refunds the invoice and records an audit",[649,2007,738],{"class":659},[649,2009,667],{"class":659},[649,2011,1625],{"class":861},[649,2013,2014],{"class":659}," ()",[649,2016,1641],{"class":861},[649,2018,1644],{"class":659},[649,2020,2021,2024,2027,2030,2032],{"class":651,"line":717},[649,2022,2023],{"class":861},"  const",[649,2025,2026],{"class":663}," captured",[649,2028,2029],{"class":659}," =",[649,2031,1979],{"class":731},[649,2033,1762],{"class":769},[649,2035,2036],{"class":651,"line":753},[649,2037,714],{"emptyLinePlaceholder":713},[649,2039,2040,2042,2045,2047,2049,2052,2054,2056,2058,2060,2063,2065,2068,2070,2072,2074,2076,2078,2080,2082,2084,2086,2088,2090,2093,2095,2097,2099],{"class":651,"line":822},[649,2041,1649],{"class":655},[649,2043,2044],{"class":731}," refundInvoice",[649,2046,735],{"class":769},[649,2048,766],{"class":659},[649,2050,2051],{"class":769}," id",[649,2053,773],{"class":659},[649,2055,679],{"class":659},[649,2057,971],{"class":682},[649,2059,738],{"class":659},[649,2061,2062],{"class":659}," },",[649,2064,660],{"class":659},[649,2066,2067],{"class":769}," actor",[649,2069,773],{"class":659},[649,2071,660],{"class":659},[649,2073,1592],{"class":769},[649,2075,773],{"class":659},[649,2077,679],{"class":659},[649,2079,909],{"class":682},[649,2081,738],{"class":659},[649,2083,667],{"class":659},[649,2085,2051],{"class":769},[649,2087,773],{"class":659},[649,2089,679],{"class":659},[649,2091,2092],{"class":682},"u1",[649,2094,738],{"class":659},[649,2096,673],{"class":659},[649,2098,673],{"class":659},[649,2100,1491],{"class":769},[649,2102,2103],{"class":651,"line":840},[649,2104,714],{"emptyLinePlaceholder":713},[649,2106,2107,2110,2112,2115,2117],{"class":651,"line":1733},[649,2108,2109],{"class":663},"  captured",[649,2111,723],{"class":659},[649,2113,2114],{"class":731},"assertAudit",[649,2116,735],{"class":769},[649,2118,1674],{"class":659},[649,2120,2121,2124,2126,2128,2130,2132],{"class":651,"line":1749},[649,2122,2123],{"class":769},"    action",[649,2125,773],{"class":659},[649,2127,679],{"class":659},[649,2129,882],{"class":682},[649,2131,738],{"class":659},[649,2133,819],{"class":659},[649,2135,2136,2139,2141,2143,2145,2147,2149,2151,2153,2155,2157,2159,2161,2163,2165],{"class":651,"line":1765},[649,2137,2138],{"class":769},"    target",[649,2140,773],{"class":659},[649,2142,660],{"class":659},[649,2144,1592],{"class":769},[649,2146,773],{"class":659},[649,2148,679],{"class":659},[649,2150,954],{"class":682},[649,2152,738],{"class":659},[649,2154,667],{"class":659},[649,2156,2051],{"class":769},[649,2158,773],{"class":659},[649,2160,679],{"class":659},[649,2162,971],{"class":682},[649,2164,738],{"class":659},[649,2166,837],{"class":659},[649,2168,2169,2172,2174,2176,2178,2180],{"class":651,"line":1771},[649,2170,2171],{"class":769},"    outcome",[649,2173,773],{"class":659},[649,2175,679],{"class":659},[649,2177,989],{"class":682},[649,2179,738],{"class":659},[649,2181,819],{"class":659},[649,2183,2184,2186],{"class":651,"line":1776},[649,2185,1752],{"class":659},[649,2187,1491],{"class":769},[649,2189,2191],{"class":651,"line":2190},13,[649,2192,714],{"emptyLinePlaceholder":713},[649,2194,2196,2198,2200,2203],{"class":651,"line":2195},14,[649,2197,2109],{"class":663},[649,2199,723],{"class":659},[649,2201,2202],{"class":731},"restore",[649,2204,1762],{"class":769},[649,2206,2208,2210],{"class":651,"line":2207},15,[649,2209,1415],{"class":659},[649,2211,1491],{"class":663},[614,2213,2214,2215,2218,2219,2222,2223,723],{},"Prefer ",[618,2216,2217],{},"assertAudit()"," when a missing audit should fail the test with a readable message. 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