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request-scoped logger accessible via ",[591,596,597],{},"request.log"," and ",[591,600,601],{},"useLogger()",", emitting a wide event when the response completes.",[604,605,608,611,636],"prompt",{":actions":606,"description":607,"icon":283},"[\"copy\",\"cursor\",\"claude\"]","Set up evlog in my Fastify app",[587,609,610],{},"Set up evlog in my Fastify app.",[612,613,614,618,621,624,627,630,633],"ul",{},[615,616,617],"li",{},"Install evlog: pnpm add evlog",[615,619,620],{},"Call initLogger({ env: { service: 'my-api' } }) at startup",[615,622,623],{},"Alternatively, use evlog\u002Fvite plugin in vite.config.ts for auto-init (replaces initLogger)",[615,625,626],{},"Import evlog from 'evlog\u002Ffastify' and register with app.register(evlog)",[615,628,629],{},"Access the logger via request.log in route handlers or useLogger() anywhere",[615,631,632],{},"Use log.set() to accumulate context throughout the request",[615,634,635],{},"Optionally pass drain, enrich, include, and keep options when registering",[587,637,638,639,645,646],{},"Docs: ",[640,641,642],"a",{"href":642,"rel":643},"https:\u002F\u002Fwww.evlog.dev\u002Fintegrate\u002Fframeworks\u002Ffastify",[644],"nofollow","\nAdapters: ",[640,647,648],{"href":648,"rel":649},"https:\u002F\u002Fwww.evlog.dev\u002Fintegrate\u002Fadapters\u002Foverview",[644],[651,652,25],"h2",{"id":653},"quick-start",[655,656,658],"h3",{"id":657},"_1-install","1. Install",[660,661,662,690,706,722],"code-group",{},[663,664,670],"pre",{"className":665,"code":666,"filename":667,"language":668,"meta":669,"style":669},"language-bash shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","pnpm add evlog fastify\n","pnpm","bash","",[591,671,672],{"__ignoreMap":669},[673,674,677,680,684,687],"span",{"class":675,"line":676},"line",1,[673,678,667],{"class":679},"sBMFI",[673,681,683],{"class":682},"sfazB"," add",[673,685,686],{"class":682}," evlog",[673,688,689],{"class":682}," fastify\n",[663,691,694],{"className":665,"code":692,"filename":693,"language":668,"meta":669,"style":669},"bun add evlog fastify\n","bun",[591,695,696],{"__ignoreMap":669},[673,697,698,700,702,704],{"class":675,"line":676},[673,699,693],{"class":679},[673,701,683],{"class":682},[673,703,686],{"class":682},[673,705,689],{"class":682},[663,707,710],{"className":665,"code":708,"filename":709,"language":668,"meta":669,"style":669},"yarn add evlog fastify\n","yarn",[591,711,712],{"__ignoreMap":669},[673,713,714,716,718,720],{"class":675,"line":676},[673,715,709],{"class":679},[673,717,683],{"class":682},[673,719,686],{"class":682},[673,721,689],{"class":682},[663,723,726],{"className":665,"code":724,"filename":725,"language":668,"meta":669,"style":669},"npm install evlog fastify\n","npm",[591,727,728],{"__ignoreMap":669},[673,729,730,732,735,737],{"class":675,"line":676},[673,731,725],{"class":679},[673,733,734],{"class":682}," install",[673,736,686],{"class":682},[673,738,689],{"class":682},[655,740,742],{"id":741},"_2-initialize-and-register-the-plugin","2. Initialize and register the plugin",[663,744,749],{"className":745,"code":746,"filename":747,"language":748,"meta":669,"style":669},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import Fastify from 'fastify'\nimport { initLogger } from 'evlog'\nimport { evlog } from 'evlog\u002Ffastify'\n\ninitLogger({\n  env: { service: 'my-api' },\n})\n\nconst app = Fastify({ logger: false })\n\nawait app.register(evlog)\n\napp.get('\u002Fhealth', async (request) => {\n  request.log.set({ route: 'health' })\n  return { ok: true }\n})\n\nawait app.listen({ port: 3000 })\n","src\u002Findex.ts","typescript",[591,750,751,774,798,817,824,837,865,874,879,913,918,936,941,983,1019,1038,1045,1050],{"__ignoreMap":669},[673,752,753,757,761,764,768,771],{"class":675,"line":676},[673,754,756],{"class":755},"s7zQu","import",[673,758,760],{"class":759},"sTEyZ"," Fastify ",[673,762,763],{"class":755},"from",[673,765,767],{"class":766},"sMK4o"," 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}\n",[673,1039,1041,1043],{"class":675,"line":1040},16,[673,1042,870],{"class":766},[673,1044,873],{"class":759},[673,1046,1048],{"class":675,"line":1047},17,[673,1049,823],{"emptyLinePlaceholder":822},[673,1051,1053,1055,1057,1059,1062,1064,1066,1069,1071,1075,1077],{"class":675,"line":1052},18,[673,1054,923],{"class":755},[673,1056,926],{"class":759},[673,1058,929],{"class":766},[673,1060,1061],{"class":829},"listen",[673,1063,833],{"class":759},[673,1065,899],{"class":766},[673,1067,1068],{"class":842}," port",[673,1070,846],{"class":766},[673,1072,1074],{"class":1073},"sbssI"," 3000",[673,1076,787],{"class":766},[673,1078,873],{"class":759},[1080,1081,1083,1087,1088,1094,1095,1098,1099,1102],"callout",{"color":1082,"icon":537},"info",[1084,1085,1086],"strong",{},"Using Vite?"," The ",[640,1089,1090,1093],{"href":535},[591,1091,1092],{},"evlog\u002Fvite"," plugin"," replaces the ",[591,1096,1097],{},"initLogger()"," call with compile-time auto-initialization, strips ",[591,1100,1101],{},"log.debug()"," from production builds, and injects source locations.",[587,1104,1105,1107,1108,1111],{},[591,1106,597],{}," is the evlog wide-event logger and shadows Fastify's built-in pino logger on the request. The pino logger remains accessible via ",[591,1109,1110],{},"fastify.log"," for server-level structured logging.",[651,1113,51],{"id":1114},"wide-events",[587,1116,1117],{},"Build up context progressively through your handler. One request = one wide event:",[663,1119,1121],{"className":745,"code":1120,"filename":747,"language":748,"meta":669,"style":669},"app.get('\u002Fusers\u002F:id', async (request) => {\n  const { id } = request.params as { id: string }\n\n  request.log.set({ user: { id } })\n\n  const user = await db.findUser(id)\n  request.log.set({ user: { name: user.name, plan: user.plan } })\n\n  const orders = await db.findOrders(id)\n  request.log.set({ orders: { count: orders.length, totalRevenue: sum(orders) } })\n\n  return { user, orders }\n})\n",[591,1122,1123,1154,1191,1195,1226,1230,1256,1310,1314,1338,1396,1400,1414],{"__ignoreMap":669},[673,1124,1125,1127,1129,1131,1133,1135,1138,1140,1142,1144,1146,1148,1150,1152],{"class":675,"line":676},[673,1126,946],{"class":759},[673,1128,929],{"class":766},[673,1130,951],{"class":829},[673,1132,833],{"class":759},[673,1134,861],{"class":766},[673,1136,1137],{"class":682},"\u002Fusers\u002F:id",[673,1139,861],{"class":766},[673,1141,963],{"class":766},[673,1143,966],{"class":884},[673,1145,969],{"class":766},[673,1147,973],{"class":972},[673,1149,976],{"class":766},[673,1151,979],{"class":884},[673,1153,982],{"class":766},[673,1155,1156,1159,1161,1164,1166,1169,1172,1174,1177,1180,1182,1184,1186,1189],{"class":675,"line":776},[673,1157,1158],{"class":884},"  const",[673,1160,781],{"class":766},[673,1162,1163],{"class":759}," id",[673,1165,787],{"class":766},[673,1167,1168],{"class":766}," =",[673,1170,1171],{"class":759}," 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totalRevenue",[673,1378,846],{"class":766},[673,1380,1381],{"class":829}," sum",[673,1383,833],{"class":842},[673,1385,1386],{"class":759},"orders",[673,1388,1389],{"class":842},") ",[673,1391,870],{"class":766},[673,1393,787],{"class":766},[673,1395,873],{"class":842},[673,1397,1398],{"class":675,"line":920},[673,1399,823],{"emptyLinePlaceholder":822},[673,1401,1402,1404,1406,1408,1410,1412],{"class":675,"line":938},[673,1403,1024],{"class":755},[673,1405,781],{"class":766},[673,1407,1213],{"class":759},[673,1409,963],{"class":766},[673,1411,1320],{"class":759},[673,1413,1037],{"class":766},[673,1415,1416,1418],{"class":675,"line":943},[673,1417,870],{"class":766},[673,1419,873],{"class":759},[587,1421,1422],{},"All fields are merged into a single wide event emitted when the request completes:",[663,1424,1427],{"className":665,"code":1425,"filename":1426,"language":668,"meta":669,"style":669},"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",[591,1428,1429,1440,1460,1476],{"__ignoreMap":669},[673,1430,1431,1434,1437],{"class":675,"line":676},[673,1432,1433],{"class":679},"14:58:15",[673,1435,1436],{"class":682}," INFO",[673,1438,1439],{"class":759}," [my-api] GET \u002Fusers\u002Fusr_123 200 in 12ms\n",[673,1441,1442,1445,1448,1451,1454,1457],{"class":675,"line":776},[673,1443,1444],{"class":679},"  ├─",[673,1446,1447],{"class":682}," orders:",[673,1449,1450],{"class":682}," count=",[673,1452,1453],{"class":1073},"2",[673,1455,1456],{"class":682}," totalRevenue=",[673,1458,1459],{"class":1073},"6298\n",[673,1461,1462,1464,1467,1470,1473],{"class":675,"line":800},[673,1463,1444],{"class":679},[673,1465,1466],{"class":682}," user:",[673,1468,1469],{"class":682}," id=usr_123",[673,1471,1472],{"class":682}," name=Alice",[673,1474,1475],{"class":682}," plan=pro\n",[673,1477,1478,1481,1484],{"class":675,"line":819},[673,1479,1480],{"class":679},"  └─",[673,1482,1483],{"class":682}," requestId:",[673,1485,1486],{"class":682}," 4a8ff3a8-...\n",[651,1488,601],{"id":1489},"uselogger",[587,1491,1492,1493,1495],{},"Use ",[591,1494,601],{}," to access the request-scoped logger from anywhere in the call stack without passing the request object through your service layer:",[663,1497,1500],{"className":745,"code":1498,"filename":1499,"language":748,"meta":669,"style":669},"import { useLogger } from 'evlog\u002Ffastify'\n\nexport async function 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","src\u002Fservices\u002Fuser.ts",[591,1501,1502,1521,1525,1550,1564,1591,1595,1617,1663,1667,1674],{"__ignoreMap":669},[673,1503,1504,1506,1508,1511,1513,1515,1517,1519],{"class":675,"line":676},[673,1505,756],{"class":755},[673,1507,781],{"class":766},[673,1509,1510],{"class":759}," useLogger",[673,1512,787],{"class":766},[673,1514,790],{"class":755},[673,1516,767],{"class":766},[673,1518,593],{"class":682},[673,1520,773],{"class":766},[673,1522,1523],{"class":675,"line":776},[673,1524,823],{"emptyLinePlaceholder":822},[673,1526,1527,1530,1532,1535,1538,1540,1542,1544,1546,1548],{"class":675,"line":800},[673,1528,1529],{"class":755},"export",[673,1531,966],{"class":884},[673,1533,1534],{"class":884}," function",[673,1536,1537],{"class":829}," findUser",[673,1539,833],{"class":766},[673,1541,1253],{"class":972},[673,1543,846],{"class":766},[673,1545,1188],{"class":679},[673,1547,976],{"class":766},[673,1549,982],{"class":766},[673,1551,1552,1554,1557,1559,1561],{"class":675,"line":819},[673,1553,1158],{"class":884},[673,1555,1556],{"class":759}," log",[673,1558,1168],{"class":766},[673,1560,1510],{"class":829},[673,1562,1563],{"class":842},"()\n",[673,1565,1566,1569,1571,1573,1575,1577,1579,1581,1583,1585,1587,1589],{"class":675,"line":826},[673,1567,1568],{"class":759},"  log",[673,1570,929],{"class":766},[673,1572,998],{"class":829},[673,1574,833],{"class":842},[673,1576,899],{"class":766},[673,1578,1213],{"class":842},[673,1580,846],{"class":766},[673,1582,781],{"class":766},[673,1584,1163],{"class":759},[673,1586,787],{"class":766},[673,1588,787],{"class":766},[673,1590,873],{"class":842},[673,1592,1593],{"class":675,"line":839},[673,1594,823],{"emptyLinePlaceholder":822},[673,1596,1597,1599,1601,1603,1605,1607,1609,1611,1613,1615],{"class":675,"line":867},[673,1598,1158],{"class":884},[673,1600,1213],{"class":759},[673,1602,1168],{"class":766},[673,1604,1240],{"class":755},[673,1606,1243],{"class":759},[673,1608,929],{"class":766},[673,1610,1248],{"class":829},[673,1612,833],{"class":842},[673,1614,1253],{"class":759},[673,1616,873],{"class":842},[673,1618,1619,1621,1623,1625,1627,1629,1631,1633,1635,1637,1639,1641,1643,1645,1647,1649,1651,1653,1655,1657,1659,1661],{"class":675,"line":876},[673,1620,1568],{"class":759},[673,1622,929],{"class":766},[673,1624,998],{"class":829},[673,1626,833],{"class":842},[673,1628,899],{"class":766},[673,1630,1213],{"class":842},[673,1632,846],{"class":766},[673,1634,781],{"class":766},[673,1636,1280],{"class":842},[673,1638,846],{"class":766},[673,1640,1213],{"class":759},[673,1642,929],{"class":766},[673,1644,1289],{"class":759},[673,1646,963],{"class":766},[673,1648,1294],{"class":842},[673,1650,846],{"class":766},[673,1652,1213],{"class":759},[673,1654,929],{"class":766},[673,1656,1303],{"class":759},[673,1658,787],{"class":766},[673,1660,787],{"class":766},[673,1662,873],{"class":842},[673,1664,1665],{"class":675,"line":881},[673,1666,823],{"emptyLinePlaceholder":822},[673,1668,1669,1671],{"class":675,"line":915},[673,1670,1024],{"class":755},[673,1672,1673],{"class":759}," user\n",[673,1675,1676],{"class":675,"line":920},[673,1677,1678],{"class":766},"}\n",[663,1680,1682],{"className":745,"code":1681,"filename":747,"language":748,"meta":669,"style":669},"import { findUser } from '.\u002Fservices\u002Fuser'\n\napp.get('\u002Fusers\u002F:id', async (request) => {\n  const { id } = request.params as { id: string }\n  const user = await findUser(id)\n  return user\n})\n",[591,1683,1684,1703,1707,1737,1767,1785,1791],{"__ignoreMap":669},[673,1685,1686,1688,1690,1692,1694,1696,1698,1701],{"class":675,"line":676},[673,1687,756],{"class":755},[673,1689,781],{"class":766},[673,1691,1537],{"class":759},[673,1693,787],{"class":766},[673,1695,790],{"class":755},[673,1697,767],{"class":766},[673,1699,1700],{"class":682},".\u002Fservices\u002Fuser",[673,1702,773],{"class":766},[673,1704,1705],{"class":675,"line":776},[673,1706,823],{"emptyLinePlaceholder":822},[673,1708,1709,1711,1713,1715,1717,1719,1721,1723,1725,1727,1729,1731,1733,1735],{"class":675,"line":800},[673,1710,946],{"class":759},[673,1712,929],{"class":766},[673,1714,951],{"class":829},[673,1716,833],{"class":759},[673,1718,861],{"class":766},[673,1720,1137],{"class":682},[673,1722,861],{"class":766},[673,1724,963],{"class":766},[673,1726,966],{"class":884},[673,1728,969],{"class":766},[673,1730,973],{"class":972},[673,1732,976],{"class":766},[673,1734,979],{"class":884},[673,1736,982],{"class":766},[673,1738,1739,1741,1743,1745,1747,1749,1751,1753,1755,1757,1759,1761,1763,1765],{"class":675,"line":819},[673,1740,1158],{"class":884},[673,1742,781],{"class":766},[673,1744,1163],{"class":759},[673,1746,787],{"class":766},[673,1748,1168],{"class":766},[673,1750,1171],{"class":759},[673,1752,929],{"class":766},[673,1754,1176],{"class":759},[673,1756,1179],{"class":755},[673,1758,781],{"class":766},[673,1760,1163],{"class":842},[673,1762,846],{"class":766},[673,1764,1188],{"class":679},[673,1766,1037],{"class":766},[673,1768,1769,1771,1773,1775,1777,1779,1781,1783],{"class":675,"line":826},[673,1770,1158],{"class":884},[673,1772,1213],{"class":759},[673,1774,1168],{"class":766},[673,1776,1240],{"class":755},[673,1778,1537],{"class":829},[673,1780,833],{"class":842},[673,1782,1253],{"class":759},[673,1784,873],{"class":842},[673,1786,1787,1789],{"class":675,"line":839},[673,1788,1024],{"class":755},[673,1790,1673],{"class":759},[673,1792,1793,1795],{"class":675,"line":867},[673,1794,870],{"class":766},[673,1796,873],{"class":759},[587,1798,1799,1800,598,1802,1804,1805,1807,1808,1811],{},"Both ",[591,1801,597],{},[591,1803,601],{}," return the same logger instance. ",[591,1806,601],{}," uses ",[591,1809,1810],{},"AsyncLocalStorage"," to propagate the logger across async boundaries.",[651,1813,1815,1816,976],{"id":1814},"background-work-logfork","Background work (",[591,1817,1818],{},"log.fork",[587,1820,1492,1821,1824,1825,1828,1829,1833],{},[591,1822,1823],{},"request.log.fork(label, fn)"," for async work that should emit a ",[1084,1826,1827],{},"separate"," child wide event after the response. See ",[640,1830,1832],{"href":1831},"\u002Flearn\u002Fwide-events#after-emit-sealing-and-background-work","After emit"," in Wide events.",[663,1835,1837],{"className":745,"code":1836,"filename":747,"language":748,"meta":669,"style":669},"import { evlog, useLogger } from 'evlog\u002Ffastify'\n\napp.post('\u002Forders', async (request, reply) => {\n  request.log.fork!('fulfill', async () => {\n    const log = useLogger()\n    log.set({ step: 'ok' })\n  })\n  return { ok: true }\n})\n",[591,1838,1839,1861,1865,1902,1938,1951,1980,1987,2001],{"__ignoreMap":669},[673,1840,1841,1843,1845,1847,1849,1851,1853,1855,1857,1859],{"class":675,"line":676},[673,1842,756],{"class":755},[673,1844,781],{"class":766},[673,1846,686],{"class":759},[673,1848,963],{"class":766},[673,1850,1510],{"class":759},[673,1852,787],{"class":766},[673,1854,790],{"class":755},[673,1856,767],{"class":766},[673,1858,593],{"class":682},[673,1860,773],{"class":766},[673,1862,1863],{"class":675,"line":776},[673,1864,823],{"emptyLinePlaceholder":822},[673,1866,1867,1869,1871,1874,1876,1878,1881,1883,1885,1887,1889,1891,1893,1896,1898,1900],{"class":675,"line":800},[673,1868,946],{"class":759},[673,1870,929],{"class":766},[673,1872,1873],{"class":829},"post",[673,1875,833],{"class":759},[673,1877,861],{"class":766},[673,1879,1880],{"class":682},"\u002Forders",[673,1882,861],{"class":766},[673,1884,963],{"class":766},[673,1886,966],{"class":884},[673,1888,969],{"class":766},[673,1890,973],{"class":972},[673,1892,963],{"class":766},[673,1894,1895],{"class":972}," reply",[673,1897,976],{"class":766},[673,1899,979],{"class":884},[673,1901,982],{"class":766},[673,1903,1904,1906,1908,1910,1912,1915,1918,1920,1922,1925,1927,1929,1931,1934,1936],{"class":675,"line":819},[673,1905,988],{"class":759},[673,1907,929],{"class":766},[673,1909,993],{"class":759},[673,1911,929],{"class":766},[673,1913,1914],{"class":829},"fork",[673,1916,1917],{"class":766},"!",[673,1919,833],{"class":842},[673,1921,861],{"class":766},[673,1923,1924],{"class":682},"fulfill",[673,1926,861],{"class":766},[673,1928,963],{"class":766},[673,1930,966],{"class":884},[673,1932,1933],{"class":766}," ()",[673,1935,979],{"class":884},[673,1937,982],{"class":766},[673,1939,1940,1943,1945,1947,1949],{"class":675,"line":826},[673,1941,1942],{"class":884},"    const",[673,1944,1556],{"class":759},[673,1946,1168],{"class":766},[673,1948,1510],{"class":829},[673,1950,1563],{"class":842},[673,1952,1953,1956,1958,1960,1962,1964,1967,1969,1971,1974,1976,1978],{"class":675,"line":839},[673,1954,1955],{"class":759},"    log",[673,1957,929],{"class":766},[673,1959,998],{"class":829},[673,1961,833],{"class":842},[673,1963,899],{"class":766},[673,1965,1966],{"class":842}," step",[673,1968,846],{"class":766},[673,1970,767],{"class":766},[673,1972,1973],{"class":682},"ok",[673,1975,861],{"class":766},[673,1977,787],{"class":766},[673,1979,873],{"class":842},[673,1981,1982,1985],{"class":675,"line":867},[673,1983,1984],{"class":766},"  }",[673,1986,873],{"class":842},[673,1988,1989,1991,1993,1995,1997,1999],{"class":675,"line":876},[673,1990,1024],{"class":755},[673,1992,781],{"class":766},[673,1994,1029],{"class":842},[673,1996,846],{"class":766},[673,1998,1034],{"class":907},[673,2000,1037],{"class":766},[673,2002,2003,2005],{"class":675,"line":881},[673,2004,870],{"class":766},[673,2006,873],{"class":759},[651,2008,2010],{"id":2009},"error-handling","Error Handling",[587,2012,1492,2013,2016,2017,2020,2021,2024,2025,2028,2029,846],{},[591,2014,2015],{},"createError"," for structured errors with ",[591,2018,2019],{},"why",", ",[591,2022,2023],{},"fix",", and ",[591,2026,2027],{},"link"," fields. Fastify captures thrown errors via ",[591,2030,2031],{},"onError",[663,2033,2035],{"className":745,"code":2034,"filename":747,"language":748,"meta":669,"style":669},"import { createError, parseError } from 'evlog'\n\napp.get('\u002Fcheckout', async (_request, reply) => {\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\napp.setErrorHandler((error, _request, reply) => {\n  const parsed = parseError(error)\n  reply.status(parsed.status).send({\n    message: parsed.message,\n    why: parsed.why,\n    fix: parsed.fix,\n    link: parsed.link,\n  })\n})\n",[591,2036,2037,2061,2065,2101,2112,2129,2141,2157,2173,2189,2195,2201,2205,2236,2253,2283,2298,2312,2326,2341,2348],{"__ignoreMap":669},[673,2038,2039,2041,2043,2046,2048,2051,2053,2055,2057,2059],{"class":675,"line":676},[673,2040,756],{"class":755},[673,2042,781],{"class":766},[673,2044,2045],{"class":759}," createError",[673,2047,963],{"class":766},[673,2049,2050],{"class":759}," parseError",[673,2052,787],{"class":766},[673,2054,790],{"class":755},[673,2056,767],{"class":766},[673,2058,795],{"class":682},[673,2060,773],{"class":766},[673,2062,2063],{"class":675,"line":776},[673,2064,823],{"emptyLinePlaceholder":822},[673,2066,2067,2069,2071,2073,2075,2077,2080,2082,2084,2086,2088,2091,2093,2095,2097,2099],{"class":675,"line":800},[673,2068,946],{"class":759},[673,2070,929],{"class":766},[673,2072,951],{"class":829},[673,2074,833],{"class":759},[673,2076,861],{"class":766},[673,2078,2079],{"class":682},"\u002Fcheckout",[673,2081,861],{"class":766},[673,2083,963],{"class":766},[673,2085,966],{"class":884},[673,2087,969],{"class":766},[673,2089,2090],{"class":972},"_request",[673,2092,963],{"class":766},[673,2094,1895],{"class":972},[673,2096,976],{"class":766},[673,2098,979],{"class":884},[673,2100,982],{"class":766},[673,2102,2103,2106,2108,2110],{"class":675,"line":819},[673,2104,2105],{"class":755},"  throw",[673,2107,2045],{"class":829},[673,2109,833],{"class":842},[673,2111,836],{"class":766},[673,2113,2114,2117,2119,2121,2124,2126],{"class":675,"line":826},[673,2115,2116],{"class":842},"    message",[673,2118,846],{"class":766},[673,2120,767],{"class":766},[673,2122,2123],{"class":682},"Payment failed",[673,2125,861],{"class":766},[673,2127,2128],{"class":766},",\n",[673,2130,2131,2134,2136,2139],{"class":675,"line":839},[673,2132,2133],{"class":842},"    status",[673,2135,846],{"class":766},[673,2137,2138],{"class":1073}," 402",[673,2140,2128],{"class":766},[673,2142,2143,2146,2148,2150,2153,2155],{"class":675,"line":867},[673,2144,2145],{"class":842},"    why",[673,2147,846],{"class":766},[673,2149,767],{"class":766},[673,2151,2152],{"class":682},"Card declined by issuer",[673,2154,861],{"class":766},[673,2156,2128],{"class":766},[673,2158,2159,2162,2164,2166,2169,2171],{"class":675,"line":876},[673,2160,2161],{"class":842},"    fix",[673,2163,846],{"class":766},[673,2165,767],{"class":766},[673,2167,2168],{"class":682},"Try a different payment method",[673,2170,861],{"class":766},[673,2172,2128],{"class":766},[673,2174,2175,2178,2180,2182,2185,2187],{"class":675,"line":881},[673,2176,2177],{"class":842},"    link",[673,2179,846],{"class":766},[673,2181,767],{"class":766},[673,2183,2184],{"class":682},"https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined",[673,2186,861],{"class":766},[673,2188,2128],{"class":766},[673,2190,2191,2193],{"class":675,"line":915},[673,2192,1984],{"class":766},[673,2194,873],{"class":842},[673,2196,2197,2199],{"class":675,"line":920},[673,2198,870],{"class":766},[673,2200,873],{"class":759},[673,2202,2203],{"class":675,"line":938},[673,2204,823],{"emptyLinePlaceholder":822},[673,2206,2207,2209,2211,2214,2216,2218,2221,2223,2226,2228,2230,2232,2234],{"class":675,"line":943},[673,2208,946],{"class":759},[673,2210,929],{"class":766},[673,2212,2213],{"class":829},"setErrorHandler",[673,2215,833],{"class":759},[673,2217,833],{"class":766},[673,2219,2220],{"class":972},"error",[673,2222,963],{"class":766},[673,2224,2225],{"class":972}," _request",[673,2227,963],{"class":766},[673,2229,1895],{"class":972},[673,2231,976],{"class":766},[673,2233,979],{"class":884},[673,2235,982],{"class":766},[673,2237,2238,2240,2243,2245,2247,2249,2251],{"class":675,"line":985},[673,2239,1158],{"class":884},[673,2241,2242],{"class":759}," parsed",[673,2244,1168],{"class":766},[673,2246,2050],{"class":829},[673,2248,833],{"class":842},[673,2250,2220],{"class":759},[673,2252,873],{"class":842},[673,2254,2255,2258,2260,2263,2265,2268,2270,2272,2274,2276,2279,2281],{"class":675,"line":1021},[673,2256,2257],{"class":759},"  reply",[673,2259,929],{"class":766},[673,2261,2262],{"class":829},"status",[673,2264,833],{"class":842},[673,2266,2267],{"class":759},"parsed",[673,2269,929],{"class":766},[673,2271,2262],{"class":759},[673,2273,976],{"class":842},[673,2275,929],{"class":766},[673,2277,2278],{"class":829},"send",[673,2280,833],{"class":842},[673,2282,836],{"class":766},[673,2284,2285,2287,2289,2291,2293,2296],{"class":675,"line":1040},[673,2286,2116],{"class":842},[673,2288,846],{"class":766},[673,2290,2242],{"class":759},[673,2292,929],{"class":766},[673,2294,2295],{"class":759},"message",[673,2297,2128],{"class":766},[673,2299,2300,2302,2304,2306,2308,2310],{"class":675,"line":1047},[673,2301,2145],{"class":842},[673,2303,846],{"class":766},[673,2305,2242],{"class":759},[673,2307,929],{"class":766},[673,2309,2019],{"class":759},[673,2311,2128],{"class":766},[673,2313,2314,2316,2318,2320,2322,2324],{"class":675,"line":1052},[673,2315,2161],{"class":842},[673,2317,846],{"class":766},[673,2319,2242],{"class":759},[673,2321,929],{"class":766},[673,2323,2023],{"class":759},[673,2325,2128],{"class":766},[673,2327,2329,2331,2333,2335,2337,2339],{"class":675,"line":2328},19,[673,2330,2177],{"class":842},[673,2332,846],{"class":766},[673,2334,2242],{"class":759},[673,2336,929],{"class":766},[673,2338,2027],{"class":759},[673,2340,2128],{"class":766},[673,2342,2344,2346],{"class":675,"line":2343},20,[673,2345,1984],{"class":766},[673,2347,873],{"class":842},[673,2349,2351,2353],{"class":675,"line":2350},21,[673,2352,870],{"class":766},[673,2354,873],{"class":759},[587,2356,2357],{},"The error is captured and logged with both the custom context and structured error fields:",[663,2359,2361],{"className":665,"code":2360,"filename":1426,"language":668,"meta":669,"style":669},"14:58:20 ERROR [my-api] GET \u002Fcheckout 402 in 3ms\n  ├─ error: name=EvlogError message=Payment failed status=402\n  └─ requestId: 880a50ac-...\n",[591,2362,2363,2374,2396],{"__ignoreMap":669},[673,2364,2365,2368,2371],{"class":675,"line":676},[673,2366,2367],{"class":679},"14:58:20",[673,2369,2370],{"class":682}," ERROR",[673,2372,2373],{"class":759}," [my-api] GET \u002Fcheckout 402 in 3ms\n",[673,2375,2376,2378,2381,2384,2387,2390,2393],{"class":675,"line":776},[673,2377,1444],{"class":679},[673,2379,2380],{"class":682}," error:",[673,2382,2383],{"class":682}," name=EvlogError",[673,2385,2386],{"class":682}," message=Payment",[673,2388,2389],{"class":682}," failed",[673,2391,2392],{"class":682}," status=",[673,2394,2395],{"class":1073},"402\n",[673,2397,2398,2400,2402],{"class":675,"line":800},[673,2399,1480],{"class":679},[673,2401,1483],{"class":682},[673,2403,2404],{"class":682}," 880a50ac-...\n",[651,2406,526],{"id":2407},"configuration",[587,2409,2410,2411,2414,2415,2417],{},"See the ",[640,2412,2413],{"href":527},"Configuration reference"," for all available options (",[591,2416,830],{},", middleware options, sampling, silent mode, etc.).",[651,2419,2421],{"id":2420},"drain-enrichers","Drain & Enrichers",[587,2423,2424],{},"Configure drain adapters and enrichers directly in the plugin options:",[663,2426,2428],{"className":745,"code":2427,"filename":747,"language":748,"meta":669,"style":669},"import { createAxiomDrain } from 'evlog\u002Faxiom'\nimport { createUserAgentEnricher } from 'evlog\u002Fenrichers'\n\nconst userAgent = createUserAgentEnricher()\n\nawait app.register(evlog, {\n  drain: createAxiomDrain(),\n  enrich: (ctx) => {\n    userAgent(ctx)\n    ctx.event.region = process.env.FLY_REGION\n  },\n})\n",[591,2429,2430,2450,2470,2474,2487,2491,2508,2522,2540,2551,2581,2586],{"__ignoreMap":669},[673,2431,2432,2434,2436,2439,2441,2443,2445,2448],{"class":675,"line":676},[673,2433,756],{"class":755},[673,2435,781],{"class":766},[673,2437,2438],{"class":759}," createAxiomDrain",[673,2440,787],{"class":766},[673,2442,790],{"class":755},[673,2444,767],{"class":766},[673,2446,2447],{"class":682},"evlog\u002Faxiom",[673,2449,773],{"class":766},[673,2451,2452,2454,2456,2459,2461,2463,2465,2468],{"class":675,"line":776},[673,2453,756],{"class":755},[673,2455,781],{"class":766},[673,2457,2458],{"class":759}," createUserAgentEnricher",[673,2460,787],{"class":766},[673,2462,790],{"class":755},[673,2464,767],{"class":766},[673,2466,2467],{"class":682},"evlog\u002Fenrichers",[673,2469,773],{"class":766},[673,2471,2472],{"class":675,"line":800},[673,2473,823],{"emptyLinePlaceholder":822},[673,2475,2476,2478,2481,2483,2485],{"class":675,"line":819},[673,2477,885],{"class":884},[673,2479,2480],{"class":759}," userAgent ",[673,2482,891],{"class":766},[673,2484,2458],{"class":829},[673,2486,1563],{"class":759},[673,2488,2489],{"class":675,"line":826},[673,2490,823],{"emptyLinePlaceholder":822},[673,2492,2493,2495,2497,2499,2501,2504,2506],{"class":675,"line":839},[673,2494,923],{"class":755},[673,2496,926],{"class":759},[673,2498,929],{"class":766},[673,2500,932],{"class":829},[673,2502,2503],{"class":759},"(evlog",[673,2505,963],{"class":766},[673,2507,982],{"class":766},[673,2509,2510,2513,2515,2517,2520],{"class":675,"line":867},[673,2511,2512],{"class":842},"  drain",[673,2514,846],{"class":766},[673,2516,2438],{"class":829},[673,2518,2519],{"class":759},"()",[673,2521,2128],{"class":766},[673,2523,2524,2527,2529,2531,2534,2536,2538],{"class":675,"line":876},[673,2525,2526],{"class":829},"  enrich",[673,2528,846],{"class":766},[673,2530,969],{"class":766},[673,2532,2533],{"class":972},"ctx",[673,2535,976],{"class":766},[673,2537,979],{"class":884},[673,2539,982],{"class":766},[673,2541,2542,2545,2547,2549],{"class":675,"line":881},[673,2543,2544],{"class":829},"    userAgent",[673,2546,833],{"class":842},[673,2548,2533],{"class":759},[673,2550,873],{"class":842},[673,2552,2553,2556,2558,2561,2563,2566,2568,2571,2573,2576,2578],{"class":675,"line":915},[673,2554,2555],{"class":759},"    ctx",[673,2557,929],{"class":766},[673,2559,2560],{"class":759},"event",[673,2562,929],{"class":766},[673,2564,2565],{"class":759},"region",[673,2567,1168],{"class":766},[673,2569,2570],{"class":759}," process",[673,2572,929],{"class":766},[673,2574,2575],{"class":759},"env",[673,2577,929],{"class":766},[673,2579,2580],{"class":759},"FLY_REGION\n",[673,2582,2583],{"class":675,"line":920},[673,2584,2585],{"class":766},"  },\n",[673,2587,2588,2590],{"class":675,"line":938},[673,2589,870],{"class":766},[673,2591,873],{"class":759},[655,2593,2595],{"id":2594},"pipeline-batching-retry","Pipeline (Batching & Retry)",[587,2597,2598,2599,2602],{},"For production, wrap your adapter with ",[591,2600,2601],{},"createDrainPipeline"," to batch events and retry on failure:",[663,2604,2606],{"className":745,"code":2605,"filename":747,"language":748,"meta":669,"style":669},"import type { DrainContext } from 'evlog'\nimport { createAxiomDrain } from 'evlog\u002Faxiom'\nimport { createDrainPipeline } from 'evlog\u002Fpipeline'\n\nconst pipeline = createDrainPipeline\u003CDrainContext>({\n  batch: { size: 50, intervalMs: 5000 },\n  retry: { maxAttempts: 3 },\n})\nconst drain = pipeline(createAxiomDrain())\n\nawait app.register(evlog, { drain })\n",[591,2607,2608,2630,2648,2668,2672,2696,2725,2744,2750,2770,2774],{"__ignoreMap":669},[673,2609,2610,2612,2615,2617,2620,2622,2624,2626,2628],{"class":675,"line":676},[673,2611,756],{"class":755},[673,2613,2614],{"class":755}," type",[673,2616,781],{"class":766},[673,2618,2619],{"class":759}," DrainContext",[673,2621,787],{"class":766},[673,2623,790],{"class":755},[673,2625,767],{"class":766},[673,2627,795],{"class":682},[673,2629,773],{"class":766},[673,2631,2632,2634,2636,2638,2640,2642,2644,2646],{"class":675,"line":776},[673,2633,756],{"class":755},[673,2635,781],{"class":766},[673,2637,2438],{"class":759},[673,2639,787],{"class":766},[673,2641,790],{"class":755},[673,2643,767],{"class":766},[673,2645,2447],{"class":682},[673,2647,773],{"class":766},[673,2649,2650,2652,2654,2657,2659,2661,2663,2666],{"class":675,"line":800},[673,2651,756],{"class":755},[673,2653,781],{"class":766},[673,2655,2656],{"class":759}," createDrainPipeline",[673,2658,787],{"class":766},[673,2660,790],{"class":755},[673,2662,767],{"class":766},[673,2664,2665],{"class":682},"evlog\u002Fpipeline",[673,2667,773],{"class":766},[673,2669,2670],{"class":675,"line":819},[673,2671,823],{"emptyLinePlaceholder":822},[673,2673,2674,2676,2679,2681,2683,2686,2689,2692,2694],{"class":675,"line":826},[673,2675,885],{"class":884},[673,2677,2678],{"class":759}," pipeline ",[673,2680,891],{"class":766},[673,2682,2656],{"class":829},[673,2684,2685],{"class":766},"\u003C",[673,2687,2688],{"class":679},"DrainContext",[673,2690,2691],{"class":766},">",[673,2693,833],{"class":759},[673,2695,836],{"class":766},[673,2697,2698,2701,2703,2705,2708,2710,2713,2715,2718,2720,2723],{"class":675,"line":839},[673,2699,2700],{"class":842},"  batch",[673,2702,846],{"class":766},[673,2704,781],{"class":766},[673,2706,2707],{"class":842}," size",[673,2709,846],{"class":766},[673,2711,2712],{"class":1073}," 50",[673,2714,963],{"class":766},[673,2716,2717],{"class":842}," intervalMs",[673,2719,846],{"class":766},[673,2721,2722],{"class":1073}," 5000",[673,2724,864],{"class":766},[673,2726,2727,2730,2732,2734,2737,2739,2742],{"class":675,"line":867},[673,2728,2729],{"class":842},"  retry",[673,2731,846],{"class":766},[673,2733,781],{"class":766},[673,2735,2736],{"class":842}," maxAttempts",[673,2738,846],{"class":766},[673,2740,2741],{"class":1073}," 3",[673,2743,864],{"class":766},[673,2745,2746,2748],{"class":675,"line":876},[673,2747,870],{"class":766},[673,2749,873],{"class":759},[673,2751,2752,2754,2757,2759,2762,2764,2767],{"class":675,"line":881},[673,2753,885],{"class":884},[673,2755,2756],{"class":759}," drain ",[673,2758,891],{"class":766},[673,2760,2761],{"class":829}," pipeline",[673,2763,833],{"class":759},[673,2765,2766],{"class":829},"createAxiomDrain",[673,2768,2769],{"class":759},"())\n",[673,2771,2772],{"class":675,"line":915},[673,2773,823],{"emptyLinePlaceholder":822},[673,2775,2776,2778,2780,2782,2784,2786,2788,2790,2792,2794],{"class":675,"line":920},[673,2777,923],{"class":755},[673,2779,926],{"class":759},[673,2781,929],{"class":766},[673,2783,932],{"class":829},[673,2785,2503],{"class":759},[673,2787,963],{"class":766},[673,2789,781],{"class":766},[673,2791,2756],{"class":759},[673,2793,870],{"class":766},[673,2795,873],{"class":759},[1080,2797,2798,2799,2802,2803,2806],{"color":1082,"icon":13},"Call ",[591,2800,2801],{},"drain.flush()"," on server shutdown to ensure all buffered events are sent. See the ",[640,2804,2805],{"href":514},"Pipeline docs"," for all options.",[651,2808,2810],{"id":2809},"tail-sampling","Tail Sampling",[587,2812,1492,2813,2816],{},[591,2814,2815],{},"keep"," to force-retain specific events regardless of head sampling:",[663,2818,2820],{"className":745,"code":2819,"filename":747,"language":748,"meta":669,"style":669},"await app.register(evlog, {\n  drain: createAxiomDrain(),\n  keep: (ctx) => {\n    if (ctx.duration && ctx.duration > 2000) ctx.shouldKeep = true\n  },\n})\n",[591,2821,2822,2838,2850,2867,2911,2915],{"__ignoreMap":669},[673,2823,2824,2826,2828,2830,2832,2834,2836],{"class":675,"line":676},[673,2825,923],{"class":755},[673,2827,926],{"class":759},[673,2829,929],{"class":766},[673,2831,932],{"class":829},[673,2833,2503],{"class":759},[673,2835,963],{"class":766},[673,2837,982],{"class":766},[673,2839,2840,2842,2844,2846,2848],{"class":675,"line":776},[673,2841,2512],{"class":842},[673,2843,846],{"class":766},[673,2845,2438],{"class":829},[673,2847,2519],{"class":759},[673,2849,2128],{"class":766},[673,2851,2852,2855,2857,2859,2861,2863,2865],{"class":675,"line":800},[673,2853,2854],{"class":829},"  keep",[673,2856,846],{"class":766},[673,2858,969],{"class":766},[673,2860,2533],{"class":972},[673,2862,976],{"class":766},[673,2864,979],{"class":884},[673,2866,982],{"class":766},[673,2868,2869,2872,2874,2876,2878,2881,2884,2887,2889,2891,2894,2897,2899,2901,2903,2906,2908],{"class":675,"line":819},[673,2870,2871],{"class":755},"    if",[673,2873,969],{"class":842},[673,2875,2533],{"class":759},[673,2877,929],{"class":766},[673,2879,2880],{"class":759},"duration",[673,2882,2883],{"class":766}," &&",[673,2885,2886],{"class":759}," ctx",[673,2888,929],{"class":766},[673,2890,2880],{"class":759},[673,2892,2893],{"class":766}," >",[673,2895,2896],{"class":1073}," 2000",[673,2898,1389],{"class":842},[673,2900,2533],{"class":759},[673,2902,929],{"class":766},[673,2904,2905],{"class":759},"shouldKeep",[673,2907,1168],{"class":766},[673,2909,2910],{"class":907}," true\n",[673,2912,2913],{"class":675,"line":826},[673,2914,2585],{"class":766},[673,2916,2917,2919],{"class":675,"line":839},[673,2918,870],{"class":766},[673,2920,873],{"class":759},[651,2922,2924],{"id":2923},"route-filtering","Route Filtering",[587,2926,2927,2928,598,2931,2934],{},"Control which routes are logged with ",[591,2929,2930],{},"include",[591,2932,2933],{},"exclude"," patterns:",[663,2936,2938],{"className":745,"code":2937,"filename":747,"language":748,"meta":669,"style":669},"await app.register(evlog, {\n  include: ['\u002Fapi\u002F**'],\n  exclude: ['\u002F_internal\u002F**', '\u002Fhealth'],\n  routes: {\n    '\u002Fapi\u002Fauth\u002F**': { service: 'auth-service' },\n    '\u002Fapi\u002Fpayment\u002F**': { service: 'payment-service' },\n  },\n})\n",[591,2939,2940,2956,2978,3006,3015,3042,3068,3072],{"__ignoreMap":669},[673,2941,2942,2944,2946,2948,2950,2952,2954],{"class":675,"line":676},[673,2943,923],{"class":755},[673,2945,926],{"class":759},[673,2947,929],{"class":766},[673,2949,932],{"class":829},[673,2951,2503],{"class":759},[673,2953,963],{"class":766},[673,2955,982],{"class":766},[673,2957,2958,2961,2963,2966,2968,2971,2973,2976],{"class":675,"line":776},[673,2959,2960],{"class":842},"  include",[673,2962,846],{"class":766},[673,2964,2965],{"class":759}," [",[673,2967,861],{"class":766},[673,2969,2970],{"class":682},"\u002Fapi\u002F**",[673,2972,861],{"class":766},[673,2974,2975],{"class":759},"]",[673,2977,2128],{"class":766},[673,2979,2980,2983,2985,2987,2989,2992,2994,2996,2998,3000,3002,3004],{"class":675,"line":800},[673,2981,2982],{"class":842},"  exclude",[673,2984,846],{"class":766},[673,2986,2965],{"class":759},[673,2988,861],{"class":766},[673,2990,2991],{"class":682},"\u002F_internal\u002F**",[673,2993,861],{"class":766},[673,2995,963],{"class":766},[673,2997,767],{"class":766},[673,2999,958],{"class":682},[673,3001,861],{"class":766},[673,3003,2975],{"class":759},[673,3005,2128],{"class":766},[673,3007,3008,3011,3013],{"class":675,"line":819},[673,3009,3010],{"class":842},"  routes",[673,3012,846],{"class":766},[673,3014,982],{"class":766},[673,3016,3017,3020,3023,3025,3027,3029,3031,3033,3035,3038,3040],{"class":675,"line":826},[673,3018,3019],{"class":766},"    '",[673,3021,3022],{"class":842},"\u002Fapi\u002Fauth\u002F**",[673,3024,861],{"class":766},[673,3026,846],{"class":766},[673,3028,781],{"class":766},[673,3030,851],{"class":842},[673,3032,846],{"class":766},[673,3034,767],{"class":766},[673,3036,3037],{"class":682},"auth-service",[673,3039,861],{"class":766},[673,3041,864],{"class":766},[673,3043,3044,3046,3049,3051,3053,3055,3057,3059,3061,3064,3066],{"class":675,"line":839},[673,3045,3019],{"class":766},[673,3047,3048],{"class":842},"\u002Fapi\u002Fpayment\u002F**",[673,3050,861],{"class":766},[673,3052,846],{"class":766},[673,3054,781],{"class":766},[673,3056,851],{"class":842},[673,3058,846],{"class":766},[673,3060,767],{"class":766},[673,3062,3063],{"class":682},"payment-service",[673,3065,861],{"class":766},[673,3067,864],{"class":766},[673,3069,3070],{"class":675,"line":867},[673,3071,2585],{"class":766},[673,3073,3074,3076],{"class":675,"line":876},[673,3075,870],{"class":766},[673,3077,873],{"class":759},[651,3079,3081],{"id":3080},"run-locally","Run 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