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Install",[614,615,616,650,670,690],"code-group",{},[617,618,624],"pre",{"className":619,"code":620,"filename":621,"language":622,"meta":623,"style":623},"language-bash shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","pnpm add evlog @nestjs\u002Fcommon @nestjs\u002Fcore @nestjs\u002Fplatform-express\n","pnpm","bash","",[544,625,626],{"__ignoreMap":623},[627,628,631,634,638,641,644,647],"span",{"class":629,"line":630},"line",1,[627,632,621],{"class":633},"sBMFI",[627,635,637],{"class":636},"sfazB"," add",[627,639,640],{"class":636}," evlog",[627,642,643],{"class":636}," @nestjs\u002Fcommon",[627,645,646],{"class":636}," @nestjs\u002Fcore",[627,648,649],{"class":636}," @nestjs\u002Fplatform-express\n",[617,651,654],{"className":619,"code":652,"filename":653,"language":622,"meta":623,"style":623},"bun add evlog @nestjs\u002Fcommon @nestjs\u002Fcore @nestjs\u002Fplatform-express\n","bun",[544,655,656],{"__ignoreMap":623},[627,657,658,660,662,664,666,668],{"class":629,"line":630},[627,659,653],{"class":633},[627,661,637],{"class":636},[627,663,640],{"class":636},[627,665,643],{"class":636},[627,667,646],{"class":636},[627,669,649],{"class":636},[617,671,674],{"className":619,"code":672,"filename":673,"language":622,"meta":623,"style":623},"yarn add evlog @nestjs\u002Fcommon @nestjs\u002Fcore @nestjs\u002Fplatform-express\n","yarn",[544,675,676],{"__ignoreMap":623},[627,677,678,680,682,684,686,688],{"class":629,"line":630},[627,679,673],{"class":633},[627,681,637],{"class":636},[627,683,640],{"class":636},[627,685,643],{"class":636},[627,687,646],{"class":636},[627,689,649],{"class":636},[617,691,694],{"className":619,"code":692,"filename":693,"language":622,"meta":623,"style":623},"npm install evlog @nestjs\u002Fcommon @nestjs\u002Fcore @nestjs\u002Fplatform-express\n","npm",[544,695,696],{"__ignoreMap":623},[627,697,698,700,703,705,707,709],{"class":629,"line":630},[627,699,693],{"class":633},[627,701,702],{"class":636}," install",[627,704,640],{"class":636},[627,706,643],{"class":636},[627,708,646],{"class":636},[627,710,649],{"class":636},[609,712,714],{"id":713},"_2-register-the-module","2. 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Bootstrap with evlog",[617,864,867],{"className":717,"code":865,"filename":866,"language":720,"meta":623,"style":623},"import 'reflect-metadata'\nimport { NestFactory } from '@nestjs\u002Fcore'\nimport { initLogger } from 'evlog'\nimport { AppModule } from '.\u002Fapp.module'\n\ninitLogger({\n  env: { service: 'my-api' },\n})\n\nconst app = await NestFactory.create(AppModule)\nawait app.listen(3000)\n","src\u002Fmain.ts",[544,868,869,880,900,920,939,943,952,977,983,987,1012],{"__ignoreMap":623},[627,870,871,873,875,878],{"class":629,"line":630},[627,872,728],{"class":727},[627,874,745],{"class":731},[627,876,877],{"class":636},"reflect-metadata",[627,879,751],{"class":731},[627,881,882,884,886,889,891,893,895,898],{"class":629,"line":754},[627,883,728],{"class":727},[627,885,732],{"class":731},[627,887,888],{"class":735}," NestFactory",[627,890,739],{"class":731},[627,892,742],{"class":727},[627,894,745],{"class":731},[627,896,897],{"class":636},"@nestjs\u002Fcore",[627,899,751],{"class":731},[627,901,902,904,906,909,911,913,915,918],{"class":629,"line":774},[627,903,728],{"class":727},[627,905,732],{"class":731},[627,907,908],{"class":735}," initLogger",[627,910,739],{"class":731},[627,912,742],{"class":727},[627,914,745],{"class":731},[627,916,917],{"class":636},"evlog",[627,919,751],{"class":731},[627,921,922,924,926,928,930,932,934,937],{"class":629,"line":781},[627,923,728],{"class":727},[627,925,732],{"class":731},[627,927,855],{"class":735},[627,929,739],{"class":731},[627,931,742],{"class":727},[627,933,745],{"class":731},[627,935,936],{"class":636},".\u002Fapp.module",[627,938,751],{"class":731},[627,940,941],{"class":629,"line":797},[627,942,778],{"emptyLinePlaceholder":777},[627,944,945,948,950],{"class":629,"line":810},[627,946,947],{"class":787},"initLogger",[627,949,791],{"class":735},[627,951,794],{"class":731},[627,953,954,957,959,961,964,966,968,971,974],{"class":629,"line":828},[627,955,956],{"class":800},"  env",[627,958,804],{"class":731},[627,960,732],{"class":731},[627,962,963],{"class":800}," service",[627,965,804],{"class":731},[627,967,745],{"class":731},[627,969,970],{"class":636},"my-api",[627,972,973],{"class":731},"'",[627,975,976],{"class":731}," },\n",[627,978,979,981],{"class":629,"line":836},[627,980,839],{"class":731},[627,982,842],{"class":735},[627,984,985],{"class":629,"line":845},[627,986,778],{"emptyLinePlaceholder":777},[627,988,990,993,996,999,1002,1004,1006,1009],{"class":629,"line":989},10,[627,991,992],{"class":851},"const",[627,994,995],{"class":735}," app ",[627,997,998],{"class":731},"=",[627,1000,1001],{"class":727}," await",[627,1003,888],{"class":735},[627,1005,816],{"class":731},[627,1007,1008],{"class":787},"create",[627,1010,1011],{"class":735},"(AppModule)\n",[627,1013,1015,1018,1021,1023,1026,1028,1032],{"class":629,"line":1014},11,[627,1016,1017],{"class":727},"await",[627,1019,1020],{"class":735}," app",[627,1022,816],{"class":731},[627,1024,1025],{"class":787},"listen",[627,1027,791],{"class":735},[627,1029,1031],{"class":1030},"sbssI","3000",[627,1033,842],{"class":735},[540,1035,1036,1038],{},[544,1037,550],{}," registers as a global module, so the middleware is automatically applied to all routes.",[605,1040,46],{"id":1041},"wide-events",[540,1043,1044],{},"Build up context progressively through your controllers and services. One request = one wide event:",[617,1046,1049],{"className":717,"code":1047,"filename":1048,"language":720,"meta":623,"style":623},"import { Controller, Get, Param } from '@nestjs\u002Fcommon'\nimport { useLogger } from 'evlog\u002Fnestjs'\n\n@Controller('users')\nexport class UsersController {\n  @Get(':id')\n  async findOne(@Param('id') id: string) {\n    const log = useLogger()\n\n    log.set({ user: { id } })\n\n    const user = await db.findUser(id)\n    log.set({ user: { name: user.name, plan: user.plan } })\n\n    const orders = await db.findOrders(id)\n    log.set({ orders: { count: orders.length, totalRevenue: sum(orders) } })\n\n    return { user, orders }\n  }\n}\n","src\u002Fusers.controller.ts",[544,1050,1051,1081,1100,1104,1122,1134,1153,1192,1208,1212,1243,1247,1272,1323,1328,1353,1407,1412,1429,1435],{"__ignoreMap":623},[627,1052,1053,1055,1057,1060,1063,1066,1068,1071,1073,1075,1077,1079],{"class":629,"line":630},[627,1054,728],{"class":727},[627,1056,732],{"class":731},[627,1058,1059],{"class":735}," Controller",[627,1061,1062],{"class":731},",",[627,1064,1065],{"class":735}," Get",[627,1067,1062],{"class":731},[627,1069,1070],{"class":735}," Param",[627,1072,739],{"class":731},[627,1074,742],{"class":727},[627,1076,745],{"class":731},[627,1078,748],{"class":636},[627,1080,751],{"class":731},[627,1082,1083,1085,1087,1090,1092,1094,1096,1098],{"class":629,"line":754},[627,1084,728],{"class":727},[627,1086,732],{"class":731},[627,1088,1089],{"class":735}," useLogger",[627,1091,739],{"class":731},[627,1093,742],{"class":727},[627,1095,745],{"class":731},[627,1097,546],{"class":636},[627,1099,751],{"class":731},[627,1101,1102],{"class":629,"line":774},[627,1103,778],{"emptyLinePlaceholder":777},[627,1105,1106,1108,1111,1113,1115,1118,1120],{"class":629,"line":781},[627,1107,784],{"class":731},[627,1109,1110],{"class":787},"Controller",[627,1112,791],{"class":735},[627,1114,973],{"class":731},[627,1116,1117],{"class":636},"users",[627,1119,973],{"class":731},[627,1121,842],{"class":735},[627,1123,1124,1126,1128,1131],{"class":629,"line":797},[627,1125,848],{"class":727},[627,1127,852],{"class":851},[627,1129,1130],{"class":633}," UsersController",[627,1132,1133],{"class":731}," {\n",[627,1135,1136,1139,1142,1144,1146,1149,1151],{"class":629,"line":810},[627,1137,1138],{"class":731},"  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sum",[627,1395,791],{"class":800},[627,1397,1398],{"class":735},"orders",[627,1400,1178],{"class":800},[627,1402,839],{"class":731},[627,1404,739],{"class":731},[627,1406,842],{"class":800},[627,1408,1410],{"class":629,"line":1409},17,[627,1411,778],{"emptyLinePlaceholder":777},[627,1413,1415,1418,1420,1422,1424,1426],{"class":629,"line":1414},18,[627,1416,1417],{"class":727},"    return",[627,1419,732],{"class":731},[627,1421,1229],{"class":735},[627,1423,1062],{"class":731},[627,1425,1335],{"class":735},[627,1427,1428],{"class":731}," }\n",[627,1430,1432],{"class":629,"line":1431},19,[627,1433,1434],{"class":731},"  }\n",[627,1436,1438],{"class":629,"line":1437},20,[627,1439,1440],{"class":731},"}\n",[540,1442,1443],{},"All fields are merged into a single wide event emitted when the request completes:",[617,1445,1448],{"className":619,"code":1446,"filename":1447,"language":622,"meta":623,"style":623},"14:58:15 INFO [my-api] GET \u002Fusers\u002Fusr_123 200 in 12ms\n  ├─ orders: count=2 totalRevenue=6298\n  ├─ user: id=usr_123 name=Alice plan=pro\n  └─ requestId: 4a8ff3a8-...\n","Terminal output",[544,1449,1450,1461,1481,1497],{"__ignoreMap":623},[627,1451,1452,1455,1458],{"class":629,"line":630},[627,1453,1454],{"class":633},"14:58:15",[627,1456,1457],{"class":636}," INFO",[627,1459,1460],{"class":735}," [my-api] GET \u002Fusers\u002Fusr_123 200 in 12ms\n",[627,1462,1463,1466,1469,1472,1475,1478],{"class":629,"line":754},[627,1464,1465],{"class":633},"  ├─",[627,1467,1468],{"class":636}," orders:",[627,1470,1471],{"class":636}," count=",[627,1473,1474],{"class":1030},"2",[627,1476,1477],{"class":636}," totalRevenue=",[627,1479,1480],{"class":1030},"6298\n",[627,1482,1483,1485,1488,1491,1494],{"class":629,"line":774},[627,1484,1465],{"class":633},[627,1486,1487],{"class":636}," user:",[627,1489,1490],{"class":636}," id=usr_123",[627,1492,1493],{"class":636}," name=Alice",[627,1495,1496],{"class":636}," plan=pro\n",[627,1498,1499,1502,1505],{"class":629,"line":781},[627,1500,1501],{"class":633},"  └─",[627,1503,1504],{"class":636}," requestId:",[627,1506,1507],{"class":636}," 4a8ff3a8-...\n",[605,1509,554],{"id":1510},"uselogger",[540,1512,1513,1514,1516],{},"Use ",[544,1515,554],{}," to access the request-scoped logger from anywhere in the call stack without injecting the request object through your service layer:",[617,1518,1521],{"className":717,"code":1519,"filename":1520,"language":720,"meta":623,"style":623},"import { useLogger } from 'evlog\u002Fnestjs'\n\nexport class UsersService {\n  async findUser(id: string) {\n    const log = useLogger()\n    log.set({ user: { id } })\n\n    const user = await db.findUser(id)\n    log.set({ user: { name: user.name, plan: user.plan } })\n\n    return user\n  }\n}\n","src\u002Fusers.service.ts",[544,1522,1523,1541,1545,1556,1575,1587,1613,1617,1639,1685,1689,1696,1700],{"__ignoreMap":623},[627,1524,1525,1527,1529,1531,1533,1535,1537,1539],{"class":629,"line":630},[627,1526,728],{"class":727},[627,1528,732],{"class":731},[627,1530,1089],{"class":735},[627,1532,739],{"class":731},[627,1534,742],{"class":727},[627,1536,745],{"class":731},[627,1538,546],{"class":636},[627,1540,751],{"class":731},[627,1542,1543],{"class":629,"line":754},[627,1544,778],{"emptyLinePlaceholder":777},[627,1546,1547,1549,1551,1554],{"class":629,"line":774},[627,1548,848],{"class":727},[627,1550,852],{"class":851},[627,1552,1553],{"class":633}," UsersService",[627,1555,1133],{"class":731},[627,1557,1558,1560,1563,1565,1567,1569,1571,1573],{"class":629,"line":781},[627,1559,1157],{"class":851},[627,1561,1562],{"class":800}," findUser",[627,1564,791],{"class":731},[627,1566,1173],{"class":1181},[627,1568,804],{"class":731},[627,1570,1186],{"class":633},[627,1572,1189],{"class":731},[627,1574,1133],{"class":731},[627,1576,1577,1579,1581,1583,1585],{"class":629,"line":797},[627,1578,1196],{"class":851},[627,1580,1199],{"class":735},[627,1582,1202],{"class":731},[627,1584,1089],{"class":787},[627,1586,1207],{"class":800},[627,1588,1589,1591,1593,1595,1597,1599,1601,1603,1605,1607,1609,1611],{"class":629,"line":810},[627,1590,1216],{"class":735},[627,1592,816],{"class":731},[627,1594,1221],{"class":787},[627,1596,791],{"class":800},[627,1598,1226],{"class":731},[627,1600,1229],{"class":800},[627,1602,804],{"class":731},[627,1604,732],{"class":731},[627,1606,1236],{"class":735},[627,1608,739],{"class":731},[627,1610,739],{"class":731},[627,1612,842],{"class":800},[627,1614,1615],{"class":629,"line":828},[627,1616,778],{"emptyLinePlaceholder":777},[627,1618,1619,1621,1623,1625,1627,1629,1631,1633,1635,1637],{"class":629,"line":836},[627,1620,1196],{"class":851},[627,1622,1229],{"class":735},[627,1624,1202],{"class":731},[627,1626,1001],{"class":727},[627,1628,1260],{"class":735},[627,1630,816],{"class":731},[627,1632,1265],{"class":787},[627,1634,791],{"class":800},[627,1636,1173],{"class":735},[627,1638,842],{"class":800},[627,1640,1641,1643,1645,1647,1649,1651,1653,1655,1657,1659,1661,1663,1665,1667,1669,1671,1673,1675,1677,1679,1681,1683],{"class":629,"line":845},[627,1642,1216],{"class":735},[627,1644,816],{"class":731},[627,1646,1221],{"class":787},[627,1648,791],{"class":800},[627,1650,1226],{"class":731},[627,1652,1229],{"class":800},[627,1654,804],{"class":731},[627,1656,732],{"class":731},[627,1658,1293],{"class":800},[627,1660,804],{"class":731},[627,1662,1229],{"class":735},[627,1664,816],{"class":731},[627,1666,1302],{"class":735},[627,1668,1062],{"class":731},[627,1670,1307],{"class":800},[627,1672,804],{"class":731},[627,1674,1229],{"class":735},[627,1676,816],{"class":731},[627,1678,1316],{"class":735},[627,1680,739],{"class":731},[627,1682,739],{"class":731},[627,1684,842],{"class":800},[627,1686,1687],{"class":629,"line":989},[627,1688,778],{"emptyLinePlaceholder":777},[627,1690,1691,1693],{"class":629,"line":1014},[627,1692,1417],{"class":727},[627,1694,1695],{"class":735}," user\n",[627,1697,1698],{"class":629,"line":1249},[627,1699,1434],{"class":731},[627,1701,1702],{"class":629,"line":1274},[627,1703,1440],{"class":731},[617,1705,1707],{"className":717,"code":1706,"filename":1048,"language":720,"meta":623,"style":623},"@Controller('users')\nexport class UsersController {\n  @Get(':id')\n  findOne(@Param('id') id: string) {\n    return this.usersService.findUser(id)\n  }\n}\n",[544,1708,1709,1725,1735,1751,1780,1800,1804],{"__ignoreMap":623},[627,1710,1711,1713,1715,1717,1719,1721,1723],{"class":629,"line":630},[627,1712,784],{"class":731},[627,1714,1110],{"class":787},[627,1716,791],{"class":735},[627,1718,973],{"class":731},[627,1720,1117],{"class":636},[627,1722,973],{"class":731},[627,1724,842],{"class":735},[627,1726,1727,1729,1731,1733],{"class":629,"line":754},[627,1728,848],{"class":727},[627,1730,852],{"class":851},[627,1732,1130],{"class":633},[627,1734,1133],{"class":731},[627,1736,1737,1739,1741,1743,1745,1747,1749],{"class":629,"line":774},[627,1738,1138],{"class":731},[627,1740,1141],{"class":787},[627,1742,791],{"class":735},[627,1744,973],{"class":731},[627,1746,1148],{"class":636},[627,1748,973],{"class":731},[627,1750,842],{"class":735},[627,1752,1753,1756,1758,1760,1762,1764,1766,1768,1770,1772,1774,1776,1778],{"class":629,"line":781},[627,1754,1755],{"class":800},"  findOne",[627,1757,1163],{"class":731},[627,1759,1166],{"class":787},[627,1761,791],{"class":735},[627,1763,973],{"class":731},[627,1765,1173],{"class":636},[627,1767,973],{"class":731},[627,1769,1178],{"class":735},[627,1771,1173],{"class":1181},[627,1773,804],{"class":731},[627,1775,1186],{"class":633},[627,1777,1189],{"class":731},[627,1779,1133],{"class":731},[627,1781,1782,1784,1787,1790,1792,1794,1796,1798],{"class":629,"line":797},[627,1783,1417],{"class":727},[627,1785,1786],{"class":731}," this.",[627,1788,1789],{"class":735},"usersService",[627,1791,816],{"class":731},[627,1793,1265],{"class":787},[627,1795,791],{"class":800},[627,1797,1173],{"class":735},[627,1799,842],{"class":800},[627,1801,1802],{"class":629,"line":810},[627,1803,1434],{"class":731},[627,1805,1806],{"class":629,"line":828},[627,1807,1440],{"class":731},[540,1809,1810,1811,1813,1814,1816,1817,1819,1820,1823],{},"Both ",[544,1812,558],{}," and ",[544,1815,554],{}," return the same logger instance. ",[544,1818,554],{}," uses ",[544,1821,1822],{},"AsyncLocalStorage"," to propagate the logger across async boundaries.",[605,1825,1827,1828,1189],{"id":1826},"background-work-logfork","Background work (",[544,1829,1830],{},"log.fork",[540,1832,1513,1833,1836,1837,1839,1840,1844],{},[544,1834,1835],{},"req.log.fork(label, fn)"," (or the logger from ",[544,1838,554],{}," in the same request) for child wide events. See ",[594,1841,1843],{"href":1842},"\u002Flearn\u002Fwide-events#after-emit-sealing-and-background-work","After emit"," in Wide events.",[617,1846,1849],{"className":717,"code":1847,"filename":1848,"language":720,"meta":623,"style":623},"import { useLogger } from 'evlog\u002Fnestjs'\n\n@Post()\ncreate(@Req() req: Express.Request) {\n  req.log.fork!('enqueue', async () => {\n    const log = useLogger()\n    log.set({ queued: true })\n  })\n  return { ok: true }\n}\n","src\u002Forders.controller.ts",[544,1850,1851,1869,1873,1882,1901,1941,1953,1978,1985,2001],{"__ignoreMap":623},[627,1852,1853,1855,1857,1859,1861,1863,1865,1867],{"class":629,"line":630},[627,1854,728],{"class":727},[627,1856,732],{"class":731},[627,1858,1089],{"class":735},[627,1860,739],{"class":731},[627,1862,742],{"class":727},[627,1864,745],{"class":731},[627,1866,546],{"class":636},[627,1868,751],{"class":731},[627,1870,1871],{"class":629,"line":754},[627,1872,778],{"emptyLinePlaceholder":777},[627,1874,1875,1877,1880],{"class":629,"line":774},[627,1876,784],{"class":731},[627,1878,1879],{"class":787},"Post",[627,1881,1207],{"class":735},[627,1883,1884,1886,1888,1891,1894,1896,1899],{"class":629,"line":781},[627,1885,1008],{"class":787},[627,1887,1163],{"class":735},[627,1889,1890],{"class":787},"Req",[627,1892,1893],{"class":735},"() req: Express",[627,1895,816],{"class":731},[627,1897,1898],{"class":735},"Request) ",[627,1900,794],{"class":731},[627,1902,1903,1906,1908,1911,1913,1916,1919,1921,1923,1926,1928,1930,1933,1936,1939],{"class":629,"line":797},[627,1904,1905],{"class":735},"  req",[627,1907,816],{"class":731},[627,1909,1910],{"class":735},"log",[627,1912,816],{"class":731},[627,1914,1915],{"class":787},"fork",[627,1917,1918],{"class":731},"!",[627,1920,791],{"class":800},[627,1922,973],{"class":731},[627,1924,1925],{"class":636},"enqueue",[627,1927,973],{"class":731},[627,1929,1062],{"class":731},[627,1931,1932],{"class":851}," async",[627,1934,1935],{"class":731}," ()",[627,1937,1938],{"class":851}," =>",[627,1940,1133],{"class":731},[627,1942,1943,1945,1947,1949,1951],{"class":629,"line":810},[627,1944,1196],{"class":851},[627,1946,1199],{"class":735},[627,1948,1202],{"class":731},[627,1950,1089],{"class":787},[627,1952,1207],{"class":800},[627,1954,1955,1957,1959,1961,1963,1965,1968,1970,1974,1976],{"class":629,"line":828},[627,1956,1216],{"class":735},[627,1958,816],{"class":731},[627,1960,1221],{"class":787},[627,1962,791],{"class":800},[627,1964,1226],{"class":731},[627,1966,1967],{"class":800}," queued",[627,1969,804],{"class":731},[627,1971,1973],{"class":1972},"sfNiH"," true",[627,1975,739],{"class":731},[627,1977,842],{"class":800},[627,1979,1980,1983],{"class":629,"line":836},[627,1981,1982],{"class":731},"  }",[627,1984,842],{"class":800},[627,1986,1987,1990,1992,1995,1997,1999],{"class":629,"line":845},[627,1988,1989],{"class":727},"  return",[627,1991,732],{"class":731},[627,1993,1994],{"class":800}," ok",[627,1996,804],{"class":731},[627,1998,1973],{"class":1972},[627,2000,1428],{"class":731},[627,2002,2003],{"class":629,"line":989},[627,2004,1440],{"class":731},[605,2006,2008],{"id":2007},"error-handling","Error Handling",[540,2010,1513,2011,2014,2015,2018,2019,2022,2023,2026],{},[544,2012,2013],{},"createError"," for structured errors with ",[544,2016,2017],{},"why",", ",[544,2020,2021],{},"fix",", and ",[544,2024,2025],{},"link"," fields. Create a NestJS exception filter to log and format errors:",[617,2028,2031],{"className":717,"code":2029,"filename":2030,"language":720,"meta":623,"style":623},"import { Catch } from '@nestjs\u002Fcommon'\nimport type { ExceptionFilter, ArgumentsHost } from '@nestjs\u002Fcommon'\nimport { parseError } from 'evlog'\nimport { useLogger } from 'evlog\u002Fnestjs'\n\n@Catch()\nexport class EvlogExceptionFilter implements ExceptionFilter {\n  catch(exception: unknown, host: ArgumentsHost) {\n    const response = host.switchToHttp().getResponse()\n    const error = exception instanceof Error ? exception : new Error(String(exception))\n\n    try {\n      useLogger().error(error)\n    } catch {\n      \u002F\u002F Outside an evlog request scope — log is unavailable\n    }\n\n    const parsed = parseError(error)\n    response.status(parsed.status).json({\n      message: parsed.message,\n      why: parsed.why,\n      fix: parsed.fix,\n      link: parsed.link,\n    })\n  }\n}\n","src\u002Fevlog-exception.filter.ts",[544,2032,2033,2052,2079,2098,2116,2120,2129,2145,2173,2198,2241,2245,2252,2270,2280,2286,2291,2295,2312,2342,2358,2374,2390,2406,2413,2418],{"__ignoreMap":623},[627,2034,2035,2037,2039,2042,2044,2046,2048,2050],{"class":629,"line":630},[627,2036,728],{"class":727},[627,2038,732],{"class":731},[627,2040,2041],{"class":735}," Catch",[627,2043,739],{"class":731},[627,2045,742],{"class":727},[627,2047,745],{"class":731},[627,2049,748],{"class":636},[627,2051,751],{"class":731},[627,2053,2054,2056,2059,2061,2064,2066,2069,2071,2073,2075,2077],{"class":629,"line":754},[627,2055,728],{"class":727},[627,2057,2058],{"class":727}," type",[627,2060,732],{"class":731},[627,2062,2063],{"class":735}," ExceptionFilter",[627,2065,1062],{"class":731},[627,2067,2068],{"class":735}," ArgumentsHost",[627,2070,739],{"class":731},[627,2072,742],{"class":727},[627,2074,745],{"class":731},[627,2076,748],{"class":636},[627,2078,751],{"class":731},[627,2080,2081,2083,2085,2088,2090,2092,2094,2096],{"class":629,"line":774},[627,2082,728],{"class":727},[627,2084,732],{"class":731},[627,2086,2087],{"class":735}," parseError",[627,2089,739],{"class":731},[627,2091,742],{"class":727},[627,2093,745],{"class":731},[627,2095,917],{"class":636},[627,2097,751],{"class":731},[627,2099,2100,2102,2104,2106,2108,2110,2112,2114],{"class":629,"line":781},[627,2101,728],{"class":727},[627,2103,732],{"class":731},[627,2105,1089],{"class":735},[627,2107,739],{"class":731},[627,2109,742],{"class":727},[627,2111,745],{"class":731},[627,2113,546],{"class":636},[627,2115,751],{"class":731},[627,2117,2118],{"class":629,"line":797},[627,2119,778],{"emptyLinePlaceholder":777},[627,2121,2122,2124,2127],{"class":629,"line":810},[627,2123,784],{"class":731},[627,2125,2126],{"class":787},"Catch",[627,2128,1207],{"class":735},[627,2130,2131,2133,2135,2138,2141,2143],{"class":629,"line":828},[627,2132,848],{"class":727},[627,2134,852],{"class":851},[627,2136,2137],{"class":633}," EvlogExceptionFilter",[627,2139,2140],{"class":851}," implements",[627,2142,2063],{"class":633},[627,2144,1133],{"class":731},[627,2146,2147,2150,2152,2155,2157,2160,2162,2165,2167,2169,2171],{"class":629,"line":836},[627,2148,2149],{"class":800},"  catch",[627,2151,791],{"class":731},[627,2153,2154],{"class":1181},"exception",[627,2156,804],{"class":731},[627,2158,2159],{"class":633}," unknown",[627,2161,1062],{"class":731},[627,2163,2164],{"class":1181}," host",[627,2166,804],{"class":731},[627,2168,2068],{"class":633},[627,2170,1189],{"class":731},[627,2172,1133],{"class":731},[627,2174,2175,2177,2180,2182,2184,2186,2189,2191,2193,2196],{"class":629,"line":845},[627,2176,1196],{"class":851},[627,2178,2179],{"class":735}," response",[627,2181,1202],{"class":731},[627,2183,2164],{"class":735},[627,2185,816],{"class":731},[627,2187,2188],{"class":787},"switchToHttp",[627,2190,822],{"class":800},[627,2192,816],{"class":731},[627,2194,2195],{"class":787},"getResponse",[627,2197,1207],{"class":800},[627,2199,2200,2202,2205,2207,2210,2213,2216,2219,2221,2224,2227,2229,2231,2234,2236,2238],{"class":629,"line":989},[627,2201,1196],{"class":851},[627,2203,2204],{"class":735}," error",[627,2206,1202],{"class":731},[627,2208,2209],{"class":735}," exception",[627,2211,2212],{"class":731}," instanceof",[627,2214,2215],{"class":633}," Error",[627,2217,2218],{"class":731}," ?",[627,2220,2209],{"class":735},[627,2222,2223],{"class":731}," :",[627,2225,2226],{"class":731}," new",[627,2228,2215],{"class":787},[627,2230,791],{"class":800},[627,2232,2233],{"class":787},"String",[627,2235,791],{"class":800},[627,2237,2154],{"class":735},[627,2239,2240],{"class":800},"))\n",[627,2242,2243],{"class":629,"line":1014},[627,2244,778],{"emptyLinePlaceholder":777},[627,2246,2247,2250],{"class":629,"line":1249},[627,2248,2249],{"class":727},"    try",[627,2251,1133],{"class":731},[627,2253,2254,2257,2259,2261,2264,2266,2268],{"class":629,"line":1274},[627,2255,2256],{"class":787},"      useLogger",[627,2258,822],{"class":800},[627,2260,816],{"class":731},[627,2262,2263],{"class":787},"error",[627,2265,791],{"class":800},[627,2267,2263],{"class":735},[627,2269,842],{"class":800},[627,2271,2272,2275,2278],{"class":629,"line":1325},[627,2273,2274],{"class":731},"    }",[627,2276,2277],{"class":727}," catch",[627,2279,1133],{"class":731},[627,2281,2282],{"class":629,"line":1330},[627,2283,2285],{"class":2284},"sHwdD","      \u002F\u002F Outside an evlog request scope — log is unavailable\n",[627,2287,2288],{"class":629,"line":1355},[627,2289,2290],{"class":731},"    }\n",[627,2292,2293],{"class":629,"line":1409},[627,2294,778],{"emptyLinePlaceholder":777},[627,2296,2297,2299,2302,2304,2306,2308,2310],{"class":629,"line":1414},[627,2298,1196],{"class":851},[627,2300,2301],{"class":735}," parsed",[627,2303,1202],{"class":731},[627,2305,2087],{"class":787},[627,2307,791],{"class":800},[627,2309,2263],{"class":735},[627,2311,842],{"class":800},[627,2313,2314,2317,2319,2322,2324,2327,2329,2331,2333,2335,2338,2340],{"class":629,"line":1431},[627,2315,2316],{"class":735},"    response",[627,2318,816],{"class":731},[627,2320,2321],{"class":787},"status",[627,2323,791],{"class":800},[627,2325,2326],{"class":735},"parsed",[627,2328,816],{"class":731},[627,2330,2321],{"class":735},[627,2332,1189],{"class":800},[627,2334,816],{"class":731},[627,2336,2337],{"class":787},"json",[627,2339,791],{"class":800},[627,2341,794],{"class":731},[627,2343,2344,2347,2349,2351,2353,2356],{"class":629,"line":1437},[627,2345,2346],{"class":800},"      message",[627,2348,804],{"class":731},[627,2350,2301],{"class":735},[627,2352,816],{"class":731},[627,2354,2355],{"class":735},"message",[627,2357,825],{"class":731},[627,2359,2361,2364,2366,2368,2370,2372],{"class":629,"line":2360},21,[627,2362,2363],{"class":800},"      why",[627,2365,804],{"class":731},[627,2367,2301],{"class":735},[627,2369,816],{"class":731},[627,2371,2017],{"class":735},[627,2373,825],{"class":731},[627,2375,2377,2380,2382,2384,2386,2388],{"class":629,"line":2376},22,[627,2378,2379],{"class":800},"      fix",[627,2381,804],{"class":731},[627,2383,2301],{"class":735},[627,2385,816],{"class":731},[627,2387,2021],{"class":735},[627,2389,825],{"class":731},[627,2391,2393,2396,2398,2400,2402,2404],{"class":629,"line":2392},23,[627,2394,2395],{"class":800},"      link",[627,2397,804],{"class":731},[627,2399,2301],{"class":735},[627,2401,816],{"class":731},[627,2403,2025],{"class":735},[627,2405,825],{"class":731},[627,2407,2409,2411],{"class":629,"line":2408},24,[627,2410,2274],{"class":731},[627,2412,842],{"class":800},[627,2414,2416],{"class":629,"line":2415},25,[627,2417,1434],{"class":731},[627,2419,2421],{"class":629,"line":2420},26,[627,2422,1440],{"class":731},[540,2424,2425],{},"Apply it to your controllers:",[617,2427,2430],{"className":717,"code":2428,"filename":2429,"language":720,"meta":623,"style":623},"import { Controller, Get, UseFilters } from '@nestjs\u002Fcommon'\nimport { createError } from 'evlog'\nimport { EvlogExceptionFilter } from '.\u002Fevlog-exception.filter'\n\n@Controller()\n@UseFilters(new EvlogExceptionFilter())\nexport class CheckoutController {\n  @Get('checkout')\n  checkout() {\n    throw createError({\n      message: 'Payment failed',\n      status: 402,\n      why: 'Card declined by issuer',\n      fix: 'Try a different payment method',\n      link: 'https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined',\n    })\n  }\n}\n","src\u002Fcheckout.controller.ts",[544,2431,2432,2459,2478,2497,2501,2509,2526,2537,2554,2563,2574,2589,2601,2616,2631,2646,2652,2656],{"__ignoreMap":623},[627,2433,2434,2436,2438,2440,2442,2444,2446,2449,2451,2453,2455,2457],{"class":629,"line":630},[627,2435,728],{"class":727},[627,2437,732],{"class":731},[627,2439,1059],{"class":735},[627,2441,1062],{"class":731},[627,2443,1065],{"class":735},[627,2445,1062],{"class":731},[627,2447,2448],{"class":735}," UseFilters",[627,2450,739],{"class":731},[627,2452,742],{"class":727},[627,2454,745],{"class":731},[627,2456,748],{"class":636},[627,2458,751],{"class":731},[627,2460,2461,2463,2465,2468,2470,2472,2474,2476],{"class":629,"line":754},[627,2462,728],{"class":727},[627,2464,732],{"class":731},[627,2466,2467],{"class":735}," createError",[627,2469,739],{"class":731},[627,2471,742],{"class":727},[627,2473,745],{"class":731},[627,2475,917],{"class":636},[627,2477,751],{"class":731},[627,2479,2480,2482,2484,2486,2488,2490,2492,2495],{"class":629,"line":774},[627,2481,728],{"class":727},[627,2483,732],{"class":731},[627,2485,2137],{"class":735},[627,2487,739],{"class":731},[627,2489,742],{"class":727},[627,2491,745],{"class":731},[627,2493,2494],{"class":636},".\u002Fevlog-exception.filter",[627,2496,751],{"class":731},[627,2498,2499],{"class":629,"line":781},[627,2500,778],{"emptyLinePlaceholder":777},[627,2502,2503,2505,2507],{"class":629,"line":797},[627,2504,784],{"class":731},[627,2506,1110],{"class":787},[627,2508,1207],{"class":735},[627,2510,2511,2513,2516,2518,2521,2523],{"class":629,"line":810},[627,2512,784],{"class":731},[627,2514,2515],{"class":787},"UseFilters",[627,2517,791],{"class":735},[627,2519,2520],{"class":731},"new",[627,2522,2137],{"class":787},[627,2524,2525],{"class":735},"())\n",[627,2527,2528,2530,2532,2535],{"class":629,"line":828},[627,2529,848],{"class":727},[627,2531,852],{"class":851},[627,2533,2534],{"class":633}," CheckoutController",[627,2536,1133],{"class":731},[627,2538,2539,2541,2543,2545,2547,2550,2552],{"class":629,"line":836},[627,2540,1138],{"class":731},[627,2542,1141],{"class":787},[627,2544,791],{"class":735},[627,2546,973],{"class":731},[627,2548,2549],{"class":636},"checkout",[627,2551,973],{"class":731},[627,2553,842],{"class":735},[627,2555,2556,2559,2561],{"class":629,"line":845},[627,2557,2558],{"class":800},"  checkout",[627,2560,822],{"class":731},[627,2562,1133],{"class":731},[627,2564,2565,2568,2570,2572],{"class":629,"line":989},[627,2566,2567],{"class":727},"    throw",[627,2569,2467],{"class":787},[627,2571,791],{"class":800},[627,2573,794],{"class":731},[627,2575,2576,2578,2580,2582,2585,2587],{"class":629,"line":1014},[627,2577,2346],{"class":800},[627,2579,804],{"class":731},[627,2581,745],{"class":731},[627,2583,2584],{"class":636},"Payment failed",[627,2586,973],{"class":731},[627,2588,825],{"class":731},[627,2590,2591,2594,2596,2599],{"class":629,"line":1249},[627,2592,2593],{"class":800},"      status",[627,2595,804],{"class":731},[627,2597,2598],{"class":1030}," 402",[627,2600,825],{"class":731},[627,2602,2603,2605,2607,2609,2612,2614],{"class":629,"line":1274},[627,2604,2363],{"class":800},[627,2606,804],{"class":731},[627,2608,745],{"class":731},[627,2610,2611],{"class":636},"Card declined by issuer",[627,2613,973],{"class":731},[627,2615,825],{"class":731},[627,2617,2618,2620,2622,2624,2627,2629],{"class":629,"line":1325},[627,2619,2379],{"class":800},[627,2621,804],{"class":731},[627,2623,745],{"class":731},[627,2625,2626],{"class":636},"Try a different payment method",[627,2628,973],{"class":731},[627,2630,825],{"class":731},[627,2632,2633,2635,2637,2639,2642,2644],{"class":629,"line":1330},[627,2634,2395],{"class":800},[627,2636,804],{"class":731},[627,2638,745],{"class":731},[627,2640,2641],{"class":636},"https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined",[627,2643,973],{"class":731},[627,2645,825],{"class":731},[627,2647,2648,2650],{"class":629,"line":1355},[627,2649,2274],{"class":731},[627,2651,842],{"class":800},[627,2653,2654],{"class":629,"line":1409},[627,2655,1434],{"class":731},[627,2657,2658],{"class":629,"line":1414},[627,2659,1440],{"class":731},[540,2661,2662],{},"The error is captured and logged with both the custom context and structured error fields:",[617,2664,2666],{"className":619,"code":2665,"filename":1447,"language":622,"meta":623,"style":623},"14:58:20 ERROR [my-api] GET \u002Fcheckout 402 in 3ms\n  ├─ error: name=EvlogError message=Payment failed status=402\n  └─ requestId: 880a50ac-...\n",[544,2667,2668,2679,2701],{"__ignoreMap":623},[627,2669,2670,2673,2676],{"class":629,"line":630},[627,2671,2672],{"class":633},"14:58:20",[627,2674,2675],{"class":636}," ERROR",[627,2677,2678],{"class":735}," [my-api] GET \u002Fcheckout 402 in 3ms\n",[627,2680,2681,2683,2686,2689,2692,2695,2698],{"class":629,"line":754},[627,2682,1465],{"class":633},[627,2684,2685],{"class":636}," error:",[627,2687,2688],{"class":636}," name=EvlogError",[627,2690,2691],{"class":636}," message=Payment",[627,2693,2694],{"class":636}," failed",[627,2696,2697],{"class":636}," status=",[627,2699,2700],{"class":1030},"402\n",[627,2702,2703,2705,2707],{"class":629,"line":774},[627,2704,1501],{"class":633},[627,2706,1504],{"class":636},[627,2708,2709],{"class":636}," 880a50ac-...\n",[605,2711,504],{"id":2712},"configuration",[540,2714,2715,2716,2719,2720,2722],{},"See the ",[594,2717,2718],{"href":505},"Configuration reference"," for all available options (",[544,2721,947],{},", middleware options, sampling, silent mode, etc.).",[605,2724,2726],{"id":2725},"drain-enrichers","Drain & Enrichers",[540,2728,2729,2730,804],{},"Configure drain adapters and enrichers in ",[544,2731,550],{},[617,2733,2735],{"className":717,"code":2734,"filename":719,"language":720,"meta":623,"style":623},"import { Module } from '@nestjs\u002Fcommon'\nimport { EvlogModule } from 'evlog\u002Fnestjs'\nimport { createAxiomDrain } from 'evlog\u002Faxiom'\nimport { createUserAgentEnricher } from 'evlog\u002Fenrichers'\n\nconst userAgent = createUserAgentEnricher()\n\n@Module({\n  imports: [\n    EvlogModule.forRoot({\n      drain: createAxiomDrain(),\n      enrich: (ctx) => {\n        userAgent(ctx)\n        ctx.event.region = process.env.FLY_REGION\n      },\n    }),\n  ],\n})\nexport class AppModule {}\n",[544,2736,2737,2755,2773,2793,2813,2817,2830,2834,2844,2852,2864,2877,2896,2907,2937,2942,2950,2956,2962],{"__ignoreMap":623},[627,2738,2739,2741,2743,2745,2747,2749,2751,2753],{"class":629,"line":630},[627,2740,728],{"class":727},[627,2742,732],{"class":731},[627,2744,736],{"class":735},[627,2746,739],{"class":731},[627,2748,742],{"class":727},[627,2750,745],{"class":731},[627,2752,748],{"class":636},[627,2754,751],{"class":731},[627,2756,2757,2759,2761,2763,2765,2767,2769,2771],{"class":629,"line":754},[627,2758,728],{"class":727},[627,2760,732],{"class":731},[627,2762,761],{"class":735},[627,2764,739],{"class":731},[627,2766,742],{"class":727},[627,2768,745],{"class":731},[627,2770,546],{"class":636},[627,2772,751],{"class":731},[627,2774,2775,2777,2779,2782,2784,2786,2788,2791],{"class":629,"line":774},[627,2776,728],{"class":727},[627,2778,732],{"class":731},[627,2780,2781],{"class":735}," createAxiomDrain",[627,2783,739],{"class":731},[627,2785,742],{"class":727},[627,2787,745],{"class":731},[627,2789,2790],{"class":636},"evlog\u002Faxiom",[627,2792,751],{"class":731},[627,2794,2795,2797,2799,2802,2804,2806,2808,2811],{"class":629,"line":781},[627,2796,728],{"class":727},[627,2798,732],{"class":731},[627,2800,2801],{"class":735}," createUserAgentEnricher",[627,2803,739],{"class":731},[627,2805,742],{"class":727},[627,2807,745],{"class":731},[627,2809,2810],{"class":636},"evlog\u002Fenrichers",[627,2812,751],{"class":731},[627,2814,2815],{"class":629,"line":797},[627,2816,778],{"emptyLinePlaceholder":777},[627,2818,2819,2821,2824,2826,2828],{"class":629,"line":810},[627,2820,992],{"class":851},[627,2822,2823],{"class":735}," userAgent ",[627,2825,998],{"class":731},[627,2827,2801],{"class":787},[627,2829,1207],{"class":735},[627,2831,2832],{"class":629,"line":828},[627,2833,778],{"emptyLinePlaceholder":777},[627,2835,2836,2838,2840,2842],{"class":629,"line":836},[627,2837,784],{"class":731},[627,2839,788],{"class":787},[627,2841,791],{"class":735},[627,2843,794],{"class":731},[627,2845,2846,2848,2850],{"class":629,"line":845},[627,2847,801],{"class":800},[627,2849,804],{"class":731},[627,2851,807],{"class":735},[627,2853,2854,2856,2858,2860,2862],{"class":629,"line":989},[627,2855,813],{"class":735},[627,2857,816],{"class":731},[627,2859,819],{"class":787},[627,2861,791],{"class":735},[627,2863,794],{"class":731},[627,2865,2866,2869,2871,2873,2875],{"class":629,"line":1014},[627,2867,2868],{"class":800},"      drain",[627,2870,804],{"class":731},[627,2872,2781],{"class":787},[627,2874,822],{"class":735},[627,2876,825],{"class":731},[627,2878,2879,2882,2884,2887,2890,2892,2894],{"class":629,"line":1249},[627,2880,2881],{"class":787},"      enrich",[627,2883,804],{"class":731},[627,2885,2886],{"class":731}," (",[627,2888,2889],{"class":1181},"ctx",[627,2891,1189],{"class":731},[627,2893,1938],{"class":851},[627,2895,1133],{"class":731},[627,2897,2898,2901,2903,2905],{"class":629,"line":1274},[627,2899,2900],{"class":787},"        userAgent",[627,2902,791],{"class":800},[627,2904,2889],{"class":735},[627,2906,842],{"class":800},[627,2908,2909,2912,2914,2917,2919,2922,2924,2927,2929,2932,2934],{"class":629,"line":1325},[627,2910,2911],{"class":735},"        ctx",[627,2913,816],{"class":731},[627,2915,2916],{"class":735},"event",[627,2918,816],{"class":731},[627,2920,2921],{"class":735},"region",[627,2923,1202],{"class":731},[627,2925,2926],{"class":735}," process",[627,2928,816],{"class":731},[627,2930,2931],{"class":735},"env",[627,2933,816],{"class":731},[627,2935,2936],{"class":735},"FLY_REGION\n",[627,2938,2939],{"class":629,"line":1330},[627,2940,2941],{"class":731},"      },\n",[627,2943,2944,2946,2948],{"class":629,"line":1355},[627,2945,2274],{"class":731},[627,2947,1189],{"class":735},[627,2949,825],{"class":731},[627,2951,2952,2954],{"class":629,"line":1409},[627,2953,831],{"class":735},[627,2955,825],{"class":731},[627,2957,2958,2960],{"class":629,"line":1414},[627,2959,839],{"class":731},[627,2961,842],{"class":735},[627,2963,2964,2966,2968,2970],{"class":629,"line":1431},[627,2965,848],{"class":727},[627,2967,852],{"class":851},[627,2969,855],{"class":633},[627,2971,858],{"class":731},[609,2973,2975],{"id":2974},"async-configuration","Async Configuration",[540,2977,1513,2978,2981,2982,2985],{},[544,2979,2980],{},"forRootAsync()"," when options depend on other providers (e.g. ",[544,2983,2984],{},"ConfigService","):",[617,2987,2989],{"className":717,"code":2988,"filename":719,"language":720,"meta":623,"style":623},"import { Module } from '@nestjs\u002Fcommon'\nimport { ConfigModule, ConfigService } from '@nestjs\u002Fconfig'\nimport { EvlogModule } from 'evlog\u002Fnestjs'\nimport { createAxiomDrain } from 'evlog\u002Faxiom'\n\n@Module({\n  imports: [\n    ConfigModule.forRoot(),\n    EvlogModule.forRootAsync({\n      imports: [ConfigModule],\n      inject: [ConfigService],\n      useFactory: (config: ConfigService) => ({\n        drain: createAxiomDrain({ apiKey: config.get('AXIOM_API_KEY') }),\n      }),\n    }),\n  ],\n})\nexport class AppModule 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