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Initialize and register the plugin",[582,663,668],{"className":664,"code":665,"filename":666,"language":667,"meta":588,"style":588},"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",[510,669,670,693,717,736,743,756,784,793,798,832,837,855,860,902,938,957,964,969],{"__ignoreMap":588},[592,671,672,676,680,683,687,690],{"class":594,"line":595},[592,673,675],{"class":674},"s7zQu","import",[592,677,679],{"class":678},"sTEyZ"," Fastify ",[592,681,682],{"class":674},"from",[592,684,686],{"class":685},"sMK4o"," '",[592,688,689],{"class":601},"fastify",[592,691,692],{"class":685},"'\n",[592,694,696,698,701,704,707,710,712,715],{"class":594,"line":695},2,[592,697,675],{"class":674},[592,699,700],{"class":685}," {",[592,702,703],{"class":678}," initLogger",[592,705,706],{"class":685}," }",[592,708,709],{"class":674}," 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=>",[592,900,901],{"class":685}," {\n",[592,903,905,908,910,913,915,918,920,922,925,927,929,932,934,936],{"class":594,"line":904},14,[592,906,907],{"class":678},"  request",[592,909,848],{"class":685},[592,911,912],{"class":678},"log",[592,914,848],{"class":685},[592,916,917],{"class":748},"set",[592,919,752],{"class":761},[592,921,818],{"class":685},[592,923,924],{"class":761}," route",[592,926,765],{"class":685},[592,928,686],{"class":685},[592,930,931],{"class":601},"health",[592,933,780],{"class":685},[592,935,706],{"class":685},[592,937,792],{"class":761},[592,939,941,944,946,949,951,954],{"class":594,"line":940},15,[592,942,943],{"class":674},"  return",[592,945,700],{"class":685},[592,947,948],{"class":761}," ok",[592,950,765],{"class":685},[592,952,953],{"class":826}," true",[592,955,956],{"class":685}," }\n",[592,958,960,962],{"class":594,"line":959},16,[592,961,789],{"class":685},[592,963,792],{"class":678},[592,965,967],{"class":594,"line":966},17,[592,968,742],{"emptyLinePlaceholder":741},[592,970,972,974,976,978,981,983,985,988,990,994,996],{"class":594,"line":971},18,[592,973,842],{"class":674},[592,975,845],{"class":678},[592,977,848],{"class":685},[592,979,980],{"class":748},"listen",[592,982,752],{"class":678},[592,984,818],{"class":685},[592,986,987],{"class":761}," port",[592,989,765],{"class":685},[592,991,993],{"class":992},"sbssI"," 3000",[592,995,706],{"class":685},[592,997,792],{"class":678},[999,1000,1002,1006,1007,1013,1014,1017,1018,1021],"callout",{"color":1001,"icon":486},"info",[1003,1004,1005],"strong",{},"Using Vite?"," The ",[559,1008,1009,1012],{"href":484},[510,1010,1011],{},"evlog\u002Fvite"," plugin"," replaces the ",[510,1015,1016],{},"initLogger()"," call with compile-time auto-initialization, strips ",[510,1019,1020],{},"log.debug()"," from production builds, and injects source locations.",[506,1023,1024,1026,1027,1030],{},[510,1025,516],{}," is the evlog wide-event logger and shadows Fastify's built-in pino logger on the request. The pino logger remains accessible via ",[510,1028,1029],{},"fastify.log"," for server-level structured logging.",[570,1032,46],{"id":1033},"wide-events",[506,1035,1036],{},"Build up context progressively through your handler. One request = one wide event:",[582,1038,1040],{"className":664,"code":1039,"filename":666,"language":667,"meta":588,"style":588},"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",[510,1041,1042,1073,1110,1114,1145,1149,1175,1229,1233,1257,1315,1319,1333],{"__ignoreMap":588},[592,1043,1044,1046,1048,1050,1052,1054,1057,1059,1061,1063,1065,1067,1069,1071],{"class":594,"line":595},[592,1045,865],{"class":678},[592,1047,848],{"class":685},[592,1049,870],{"class":748},[592,1051,752],{"class":678},[592,1053,780],{"class":685},[592,1055,1056],{"class":601},"\u002Fusers\u002F:id",[592,1058,780],{"class":685},[592,1060,882],{"class":685},[592,1062,885],{"class":803},[592,1064,888],{"class":685},[592,1066,892],{"class":891},[592,1068,895],{"class":685},[592,1070,898],{"class":803},[592,1072,901],{"class":685},[592,1074,1075,1078,1080,1083,1085,1088,1091,1093,1096,1099,1101,1103,1105,1108],{"class":594,"line":695},[592,1076,1077],{"class":803},"  const",[592,1079,700],{"class":685},[592,1081,1082],{"class":678}," id",[592,1084,706],{"class":685},[592,1086,1087],{"class":685}," =",[592,1089,1090],{"class":678}," 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totalRevenue",[592,1297,765],{"class":685},[592,1299,1300],{"class":748}," sum",[592,1302,752],{"class":761},[592,1304,1305],{"class":678},"orders",[592,1307,1308],{"class":761},") ",[592,1310,789],{"class":685},[592,1312,706],{"class":685},[592,1314,792],{"class":761},[592,1316,1317],{"class":594,"line":839},[592,1318,742],{"emptyLinePlaceholder":741},[592,1320,1321,1323,1325,1327,1329,1331],{"class":594,"line":857},[592,1322,943],{"class":674},[592,1324,700],{"class":685},[592,1326,1132],{"class":678},[592,1328,882],{"class":685},[592,1330,1239],{"class":678},[592,1332,956],{"class":685},[592,1334,1335,1337],{"class":594,"line":862},[592,1336,789],{"class":685},[592,1338,792],{"class":678},[506,1340,1341],{},"All fields are merged into a single wide event emitted when the request completes:",[582,1343,1346],{"className":584,"code":1344,"filename":1345,"language":587,"meta":588,"style":588},"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",[510,1347,1348,1359,1379,1395],{"__ignoreMap":588},[592,1349,1350,1353,1356],{"class":594,"line":595},[592,1351,1352],{"class":598},"14:58:15",[592,1354,1355],{"class":601}," INFO",[592,1357,1358],{"class":678}," [my-api] GET \u002Fusers\u002Fusr_123 200 in 12ms\n",[592,1360,1361,1364,1367,1370,1373,1376],{"class":594,"line":695},[592,1362,1363],{"class":598},"  ├─",[592,1365,1366],{"class":601}," orders:",[592,1368,1369],{"class":601}," count=",[592,1371,1372],{"class":992},"2",[592,1374,1375],{"class":601}," totalRevenue=",[592,1377,1378],{"class":992},"6298\n",[592,1380,1381,1383,1386,1389,1392],{"class":594,"line":719},[592,1382,1363],{"class":598},[592,1384,1385],{"class":601}," user:",[592,1387,1388],{"class":601}," id=usr_123",[592,1390,1391],{"class":601}," name=Alice",[592,1393,1394],{"class":601}," plan=pro\n",[592,1396,1397,1400,1403],{"class":594,"line":738},[592,1398,1399],{"class":598},"  └─",[592,1401,1402],{"class":601}," requestId:",[592,1404,1405],{"class":601}," 4a8ff3a8-...\n",[570,1407,520],{"id":1408},"uselogger",[506,1410,1411,1412,1414],{},"Use ",[510,1413,520],{}," to access the request-scoped logger from anywhere in the call stack without passing the request object through your service layer:",[582,1416,1419],{"className":664,"code":1417,"filename":1418,"language":667,"meta":588,"style":588},"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",[510,1420,1421,1440,1444,1469,1483,1510,1514,1536,1582,1586,1593],{"__ignoreMap":588},[592,1422,1423,1425,1427,1430,1432,1434,1436,1438],{"class":594,"line":595},[592,1424,675],{"class":674},[592,1426,700],{"class":685},[592,1428,1429],{"class":678}," useLogger",[592,1431,706],{"class":685},[592,1433,709],{"class":674},[592,1435,686],{"class":685},[592,1437,512],{"class":601},[592,1439,692],{"class":685},[592,1441,1442],{"class":594,"line":695},[592,1443,742],{"emptyLinePlaceholder":741},[592,1445,1446,1449,1451,1454,1457,1459,1461,1463,1465,1467],{"class":594,"line":719},[592,1447,1448],{"class":674},"export",[592,1450,885],{"class":803},[592,1452,1453],{"class":803}," function",[592,1455,1456],{"class":748}," findUser",[592,1458,752],{"class":685},[592,1460,1172],{"class":891},[592,1462,765],{"class":685},[592,1464,1107],{"class":598},[592,1466,895],{"class":685},[592,1468,901],{"class":685},[592,1470,1471,1473,1476,1478,1480],{"class":594,"line":738},[592,1472,1077],{"class":803},[592,1474,1475],{"class":678}," log",[592,1477,1087],{"class":685},[592,1479,1429],{"class":748},[592,1481,1482],{"class":761},"()\n",[592,1484,1485,1488,1490,1492,1494,1496,1498,1500,1502,1504,1506,1508],{"class":594,"line":745},[592,1486,1487],{"class":678},"  log",[592,1489,848],{"class":685},[592,1491,917],{"class":748},[592,1493,752],{"class":761},[592,1495,818],{"class":685},[592,1497,1132],{"class":761},[592,1499,765],{"class":685},[592,1501,700],{"class":685},[592,1503,1082],{"class":678},[592,1505,706],{"class":685},[592,1507,706],{"class":685},[592,1509,792],{"class":761},[592,1511,1512],{"class":594,"line":758},[592,1513,742],{"emptyLinePlaceholder":741},[592,1515,1516,1518,1520,1522,1524,1526,1528,1530,1532,1534],{"class":594,"line":786},[592,1517,1077],{"class":803},[592,1519,1132],{"class":678},[592,1521,1087],{"class":685},[592,1523,1159],{"class":674},[592,1525,1162],{"class":678},[592,1527,848],{"class":685},[592,1529,1167],{"class":748},[592,1531,752],{"class":761},[592,1533,1172],{"class":678},[592,1535,792],{"class":761},[592,1537,1538,1540,1542,1544,1546,1548,1550,1552,1554,1556,1558,1560,1562,1564,1566,1568,1570,1572,1574,1576,1578,1580],{"class":594,"line":795},[592,1539,1487],{"class":678},[592,1541,848],{"class":685},[592,1543,917],{"class":748},[592,1545,752],{"class":761},[592,1547,818],{"class":685},[592,1549,1132],{"class":761},[592,1551,765],{"class":685},[592,1553,700],{"class":685},[592,1555,1199],{"class":761},[592,1557,765],{"class":685},[592,1559,1132],{"class":678},[592,1561,848],{"class":685},[592,1563,1208],{"class":678},[592,1565,882],{"class":685},[592,1567,1213],{"class":761},[592,1569,765],{"class":685},[592,1571,1132],{"class":678},[592,1573,848],{"class":685},[592,1575,1222],{"class":678},[592,1577,706],{"class":685},[592,1579,706],{"class":685},[592,1581,792],{"class":761},[592,1583,1584],{"class":594,"line":800},[592,1585,742],{"emptyLinePlaceholder":741},[592,1587,1588,1590],{"class":594,"line":834},[592,1589,943],{"class":674},[592,1591,1592],{"class":678}," user\n",[592,1594,1595],{"class":594,"line":839},[592,1596,1597],{"class":685},"}\n",[582,1599,1601],{"className":664,"code":1600,"filename":666,"language":667,"meta":588,"style":588},"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",[510,1602,1603,1622,1626,1656,1686,1704,1710],{"__ignoreMap":588},[592,1604,1605,1607,1609,1611,1613,1615,1617,1620],{"class":594,"line":595},[592,1606,675],{"class":674},[592,1608,700],{"class":685},[592,1610,1456],{"class":678},[592,1612,706],{"class":685},[592,1614,709],{"class":674},[592,1616,686],{"class":685},[592,1618,1619],{"class":601},".\u002Fservices\u002Fuser",[592,1621,692],{"class":685},[592,1623,1624],{"class":594,"line":695},[592,1625,742],{"emptyLinePlaceholder":741},[592,1627,1628,1630,1632,1634,1636,1638,1640,1642,1644,1646,1648,1650,1652,1654],{"class":594,"line":719},[592,1629,865],{"class":678},[592,1631,848],{"class":685},[592,1633,870],{"class":748},[592,1635,752],{"class":678},[592,1637,780],{"class":685},[592,1639,1056],{"class":601},[592,1641,780],{"class":685},[592,1643,882],{"class":685},[592,1645,885],{"class":803},[592,1647,888],{"class":685},[592,1649,892],{"class":891},[592,1651,895],{"class":685},[592,1653,898],{"class":803},[592,1655,901],{"class":685},[592,1657,1658,1660,1662,1664,1666,1668,1670,1672,1674,1676,1678,1680,1682,1684],{"class":594,"line":738},[592,1659,1077],{"class":803},[592,1661,700],{"class":685},[592,1663,1082],{"class":678},[592,1665,706],{"class":685},[592,1667,1087],{"class":685},[592,1669,1090],{"class":678},[592,1671,848],{"class":685},[592,1673,1095],{"class":678},[592,1675,1098],{"class":674},[592,1677,700],{"class":685},[592,1679,1082],{"class":761},[592,1681,765],{"class":685},[592,1683,1107],{"class":598},[592,1685,956],{"class":685},[592,1687,1688,1690,1692,1694,1696,1698,1700,1702],{"class":594,"line":745},[592,1689,1077],{"class":803},[592,1691,1132],{"class":678},[592,1693,1087],{"class":685},[592,1695,1159],{"class":674},[592,1697,1456],{"class":748},[592,1699,752],{"class":761},[592,1701,1172],{"class":678},[592,1703,792],{"class":761},[592,1705,1706,1708],{"class":594,"line":758},[592,1707,943],{"class":674},[592,1709,1592],{"class":678},[592,1711,1712,1714],{"class":594,"line":786},[592,1713,789],{"class":685},[592,1715,792],{"class":678},[506,1717,1718,1719,517,1721,1723,1724,1726,1727,1730],{},"Both ",[510,1720,516],{},[510,1722,520],{}," return the same logger instance. ",[510,1725,520],{}," uses ",[510,1728,1729],{},"AsyncLocalStorage"," to propagate the logger across async boundaries.",[570,1732,1734,1735,895],{"id":1733},"background-work-logfork","Background work (",[510,1736,1737],{},"log.fork",[506,1739,1411,1740,1743,1744,1747,1748,848],{},[510,1741,1742],{},"request.log.fork(label, fn)"," for async work that should emit a ",[1003,1745,1746],{},"separate"," child wide event after the response. See ",[559,1749,1751],{"href":1750},"\u002Flearn\u002Fwide-events#after-emit-sealing-and-background-work","Wide events — After emit",[582,1753,1755],{"className":664,"code":1754,"filename":666,"language":667,"meta":588,"style":588},"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",[510,1756,1757,1779,1783,1820,1856,1869,1898,1905,1919],{"__ignoreMap":588},[592,1758,1759,1761,1763,1765,1767,1769,1771,1773,1775,1777],{"class":594,"line":595},[592,1760,675],{"class":674},[592,1762,700],{"class":685},[592,1764,605],{"class":678},[592,1766,882],{"class":685},[592,1768,1429],{"class":678},[592,1770,706],{"class":685},[592,1772,709],{"class":674},[592,1774,686],{"class":685},[592,1776,512],{"class":601},[592,1778,692],{"class":685},[592,1780,1781],{"class":594,"line":695},[592,1782,742],{"emptyLinePlaceholder":741},[592,1784,1785,1787,1789,1792,1794,1796,1799,1801,1803,1805,1807,1809,1811,1814,1816,1818],{"class":594,"line":719},[592,1786,865],{"class":678},[592,1788,848],{"class":685},[592,1790,1791],{"class":748},"post",[592,1793,752],{"class":678},[592,1795,780],{"class":685},[592,1797,1798],{"class":601},"\u002Forders",[592,1800,780],{"class":685},[592,1802,882],{"class":685},[592,1804,885],{"class":803},[592,1806,888],{"class":685},[592,1808,892],{"class":891},[592,1810,882],{"class":685},[592,1812,1813],{"class":891}," reply",[592,1815,895],{"class":685},[592,1817,898],{"class":803},[592,1819,901],{"class":685},[592,1821,1822,1824,1826,1828,1830,1833,1836,1838,1840,1843,1845,1847,1849,1852,1854],{"class":594,"line":738},[592,1823,907],{"class":678},[592,1825,848],{"class":685},[592,1827,912],{"class":678},[592,1829,848],{"class":685},[592,1831,1832],{"class":748},"fork",[592,1834,1835],{"class":685},"!",[592,1837,752],{"class":761},[592,1839,780],{"class":685},[592,1841,1842],{"class":601},"fulfill",[592,1844,780],{"class":685},[592,1846,882],{"class":685},[592,1848,885],{"class":803},[592,1850,1851],{"class":685}," ()",[592,1853,898],{"class":803},[592,1855,901],{"class":685},[592,1857,1858,1861,1863,1865,1867],{"class":594,"line":745},[592,1859,1860],{"class":803},"    const",[592,1862,1475],{"class":678},[592,1864,1087],{"class":685},[592,1866,1429],{"class":748},[592,1868,1482],{"class":761},[592,1870,1871,1874,1876,1878,1880,1882,1885,1887,1889,1892,1894,1896],{"class":594,"line":758},[592,1872,1873],{"class":678},"    log",[592,1875,848],{"class":685},[592,1877,917],{"class":748},[592,1879,752],{"class":761},[592,1881,818],{"class":685},[592,1883,1884],{"class":761}," step",[592,1886,765],{"class":685},[592,1888,686],{"class":685},[592,1890,1891],{"class":601},"ok",[592,1893,780],{"class":685},[592,1895,706],{"class":685},[592,1897,792],{"class":761},[592,1899,1900,1903],{"class":594,"line":786},[592,1901,1902],{"class":685},"  }",[592,1904,792],{"class":761},[592,1906,1907,1909,1911,1913,1915,1917],{"class":594,"line":795},[592,1908,943],{"class":674},[592,1910,700],{"class":685},[592,1912,948],{"class":761},[592,1914,765],{"class":685},[592,1916,953],{"class":826},[592,1918,956],{"class":685},[592,1920,1921,1923],{"class":594,"line":800},[592,1922,789],{"class":685},[592,1924,792],{"class":678},[570,1926,1928],{"id":1927},"error-handling","Error Handling",[506,1930,1411,1931,1934,1935,1938,1939,1942,1943,1946,1947,765],{},[510,1932,1933],{},"createError"," for structured errors with ",[510,1936,1937],{},"why",", ",[510,1940,1941],{},"fix",", and ",[510,1944,1945],{},"link"," fields. Fastify captures thrown errors via ",[510,1948,1949],{},"onError",[582,1951,1953],{"className":664,"code":1952,"filename":666,"language":667,"meta":588,"style":588},"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",[510,1954,1955,1979,1983,2019,2030,2047,2059,2075,2091,2107,2113,2119,2123,2154,2171,2201,2216,2230,2244,2259,2266],{"__ignoreMap":588},[592,1956,1957,1959,1961,1964,1966,1969,1971,1973,1975,1977],{"class":594,"line":595},[592,1958,675],{"class":674},[592,1960,700],{"class":685},[592,1962,1963],{"class":678}," createError",[592,1965,882],{"class":685},[592,1967,1968],{"class":678}," parseError",[592,1970,706],{"class":685},[592,1972,709],{"class":674},[592,1974,686],{"class":685},[592,1976,714],{"class":601},[592,1978,692],{"class":685},[592,1980,1981],{"class":594,"line":695},[592,1982,742],{"emptyLinePlaceholder":741},[592,1984,1985,1987,1989,1991,1993,1995,1998,2000,2002,2004,2006,2009,2011,2013,2015,2017],{"class":594,"line":719},[592,1986,865],{"class":678},[592,1988,848],{"class":685},[592,1990,870],{"class":748},[592,1992,752],{"class":678},[592,1994,780],{"class":685},[592,1996,1997],{"class":601},"\u002Fcheckout",[592,1999,780],{"class":685},[592,2001,882],{"class":685},[592,2003,885],{"class":803},[592,2005,888],{"class":685},[592,2007,2008],{"class":891},"_request",[592,2010,882],{"class":685},[592,2012,1813],{"class":891},[592,2014,895],{"class":685},[592,2016,898],{"class":803},[592,2018,901],{"class":685},[592,2020,2021,2024,2026,2028],{"class":594,"line":738},[592,2022,2023],{"class":674},"  throw",[592,2025,1963],{"class":748},[592,2027,752],{"class":761},[592,2029,755],{"class":685},[592,2031,2032,2035,2037,2039,2042,2044],{"class":594,"line":745},[592,2033,2034],{"class":761},"    message",[592,2036,765],{"class":685},[592,2038,686],{"class":685},[592,2040,2041],{"class":601},"Payment failed",[592,2043,780],{"class":685},[592,2045,2046],{"class":685},",\n",[592,2048,2049,2052,2054,2057],{"class":594,"line":758},[592,2050,2051],{"class":761},"    status",[592,2053,765],{"class":685},[592,2055,2056],{"class":992}," 402",[592,2058,2046],{"class":685},[592,2060,2061,2064,2066,2068,2071,2073],{"class":594,"line":786},[592,2062,2063],{"class":761},"    why",[592,2065,765],{"class":685},[592,2067,686],{"class":685},[592,2069,2070],{"class":601},"Card declined by issuer",[592,2072,780],{"class":685},[592,2074,2046],{"class":685},[592,2076,2077,2080,2082,2084,2087,2089],{"class":594,"line":795},[592,2078,2079],{"class":761},"    fix",[592,2081,765],{"class":685},[592,2083,686],{"class":685},[592,2085,2086],{"class":601},"Try a different payment method",[592,2088,780],{"class":685},[592,2090,2046],{"class":685},[592,2092,2093,2096,2098,2100,2103,2105],{"class":594,"line":800},[592,2094,2095],{"class":761},"    link",[592,2097,765],{"class":685},[592,2099,686],{"class":685},[592,2101,2102],{"class":601},"https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined",[592,2104,780],{"class":685},[592,2106,2046],{"class":685},[592,2108,2109,2111],{"class":594,"line":834},[592,2110,1902],{"class":685},[592,2112,792],{"class":761},[592,2114,2115,2117],{"class":594,"line":839},[592,2116,789],{"class":685},[592,2118,792],{"class":678},[592,2120,2121],{"class":594,"line":857},[592,2122,742],{"emptyLinePlaceholder":741},[592,2124,2125,2127,2129,2132,2134,2136,2139,2141,2144,2146,2148,2150,2152],{"class":594,"line":862},[592,2126,865],{"class":678},[592,2128,848],{"class":685},[592,2130,2131],{"class":748},"setErrorHandler",[592,2133,752],{"class":678},[592,2135,752],{"class":685},[592,2137,2138],{"class":891},"error",[592,2140,882],{"class":685},[592,2142,2143],{"class":891}," _request",[592,2145,882],{"class":685},[592,2147,1813],{"class":891},[592,2149,895],{"class":685},[592,2151,898],{"class":803},[592,2153,901],{"class":685},[592,2155,2156,2158,2161,2163,2165,2167,2169],{"class":594,"line":904},[592,2157,1077],{"class":803},[592,2159,2160],{"class":678}," parsed",[592,2162,1087],{"class":685},[592,2164,1968],{"class":748},[592,2166,752],{"class":761},[592,2168,2138],{"class":678},[592,2170,792],{"class":761},[592,2172,2173,2176,2178,2181,2183,2186,2188,2190,2192,2194,2197,2199],{"class":594,"line":940},[592,2174,2175],{"class":678},"  reply",[592,2177,848],{"class":685},[592,2179,2180],{"class":748},"status",[592,2182,752],{"class":761},[592,2184,2185],{"class":678},"parsed",[592,2187,848],{"class":685},[592,2189,2180],{"class":678},[592,2191,895],{"class":761},[592,2193,848],{"class":685},[592,2195,2196],{"class":748},"send",[592,2198,752],{"class":761},[592,2200,755],{"class":685},[592,2202,2203,2205,2207,2209,2211,2214],{"class":594,"line":959},[592,2204,2034],{"class":761},[592,2206,765],{"class":685},[592,2208,2160],{"class":678},[592,2210,848],{"class":685},[592,2212,2213],{"class":678},"message",[592,2215,2046],{"class":685},[592,2217,2218,2220,2222,2224,2226,2228],{"class":594,"line":966},[592,2219,2063],{"class":761},[592,2221,765],{"class":685},[592,2223,2160],{"class":678},[592,2225,848],{"class":685},[592,2227,1937],{"class":678},[592,2229,2046],{"class":685},[592,2231,2232,2234,2236,2238,2240,2242],{"class":594,"line":971},[592,2233,2079],{"class":761},[592,2235,765],{"class":685},[592,2237,2160],{"class":678},[592,2239,848],{"class":685},[592,2241,1941],{"class":678},[592,2243,2046],{"class":685},[592,2245,2247,2249,2251,2253,2255,2257],{"class":594,"line":2246},19,[592,2248,2095],{"class":761},[592,2250,765],{"class":685},[592,2252,2160],{"class":678},[592,2254,848],{"class":685},[592,2256,1945],{"class":678},[592,2258,2046],{"class":685},[592,2260,2262,2264],{"class":594,"line":2261},20,[592,2263,1902],{"class":685},[592,2265,792],{"class":761},[592,2267,2269,2271],{"class":594,"line":2268},21,[592,2270,789],{"class":685},[592,2272,792],{"class":678},[506,2274,2275],{},"The error is captured and logged with both the custom context and structured error fields:",[582,2277,2279],{"className":584,"code":2278,"filename":1345,"language":587,"meta":588,"style":588},"14:58:20 ERROR [my-api] GET \u002Fcheckout 402 in 3ms\n  ├─ error: name=EvlogError message=Payment failed status=402\n  └─ requestId: 880a50ac-...\n",[510,2280,2281,2292,2314],{"__ignoreMap":588},[592,2282,2283,2286,2289],{"class":594,"line":595},[592,2284,2285],{"class":598},"14:58:20",[592,2287,2288],{"class":601}," ERROR",[592,2290,2291],{"class":678}," [my-api] GET \u002Fcheckout 402 in 3ms\n",[592,2293,2294,2296,2299,2302,2305,2308,2311],{"class":594,"line":695},[592,2295,1363],{"class":598},[592,2297,2298],{"class":601}," error:",[592,2300,2301],{"class":601}," name=EvlogError",[592,2303,2304],{"class":601}," message=Payment",[592,2306,2307],{"class":601}," failed",[592,2309,2310],{"class":601}," status=",[592,2312,2313],{"class":992},"402\n",[592,2315,2316,2318,2320],{"class":594,"line":719},[592,2317,1399],{"class":598},[592,2319,1402],{"class":601},[592,2321,2322],{"class":601}," 880a50ac-...\n",[570,2324,475],{"id":2325},"configuration",[506,2327,2328,2329,2332,2333,2335],{},"See the ",[559,2330,2331],{"href":476},"Configuration reference"," for all available options (",[510,2334,749],{},", middleware options, sampling, silent mode, etc.).",[570,2337,2339],{"id":2338},"drain-enrichers","Drain & Enrichers",[506,2341,2342],{},"Configure drain adapters and enrichers directly in the plugin options:",[582,2344,2346],{"className":664,"code":2345,"filename":666,"language":667,"meta":588,"style":588},"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",[510,2347,2348,2368,2388,2392,2405,2409,2426,2440,2458,2469,2499,2504],{"__ignoreMap":588},[592,2349,2350,2352,2354,2357,2359,2361,2363,2366],{"class":594,"line":595},[592,2351,675],{"class":674},[592,2353,700],{"class":685},[592,2355,2356],{"class":678}," createAxiomDrain",[592,2358,706],{"class":685},[592,2360,709],{"class":674},[592,2362,686],{"class":685},[592,2364,2365],{"class":601},"evlog\u002Faxiom",[592,2367,692],{"class":685},[592,2369,2370,2372,2374,2377,2379,2381,2383,2386],{"class":594,"line":695},[592,2371,675],{"class":674},[592,2373,700],{"class":685},[592,2375,2376],{"class":678}," createUserAgentEnricher",[592,2378,706],{"class":685},[592,2380,709],{"class":674},[592,2382,686],{"class":685},[592,2384,2385],{"class":601},"evlog\u002Fenrichers",[592,2387,692],{"class":685},[592,2389,2390],{"class":594,"line":719},[592,2391,742],{"emptyLinePlaceholder":741},[592,2393,2394,2396,2399,2401,2403],{"class":594,"line":738},[592,2395,804],{"class":803},[592,2397,2398],{"class":678}," userAgent ",[592,2400,810],{"class":685},[592,2402,2376],{"class":748},[592,2404,1482],{"class":678},[592,2406,2407],{"class":594,"line":745},[592,2408,742],{"emptyLinePlaceholder":741},[592,2410,2411,2413,2415,2417,2419,2422,2424],{"class":594,"line":758},[592,2412,842],{"class":674},[592,2414,845],{"class":678},[592,2416,848],{"class":685},[592,2418,851],{"class":748},[592,2420,2421],{"class":678},"(evlog",[592,2423,882],{"class":685},[592,2425,901],{"class":685},[592,2427,2428,2431,2433,2435,2438],{"class":594,"line":786},[592,2429,2430],{"class":761},"  drain",[592,2432,765],{"class":685},[592,2434,2356],{"class":748},[592,2436,2437],{"class":678},"()",[592,2439,2046],{"class":685},[592,2441,2442,2445,2447,2449,2452,2454,2456],{"class":594,"line":795},[592,2443,2444],{"class":748},"  enrich",[592,2446,765],{"class":685},[592,2448,888],{"class":685},[592,2450,2451],{"class":891},"ctx",[592,2453,895],{"class":685},[592,2455,898],{"class":803},[592,2457,901],{"class":685},[592,2459,2460,2463,2465,2467],{"class":594,"line":800},[592,2461,2462],{"class":748},"    userAgent",[592,2464,752],{"class":761},[592,2466,2451],{"class":678},[592,2468,792],{"class":761},[592,2470,2471,2474,2476,2479,2481,2484,2486,2489,2491,2494,2496],{"class":594,"line":834},[592,2472,2473],{"class":678},"    ctx",[592,2475,848],{"class":685},[592,2477,2478],{"class":678},"event",[592,2480,848],{"class":685},[592,2482,2483],{"class":678},"region",[592,2485,1087],{"class":685},[592,2487,2488],{"class":678}," process",[592,2490,848],{"class":685},[592,2492,2493],{"class":678},"env",[592,2495,848],{"class":685},[592,2497,2498],{"class":678},"FLY_REGION\n",[592,2500,2501],{"class":594,"line":839},[592,2502,2503],{"class":685},"  },\n",[592,2505,2506,2508],{"class":594,"line":857},[592,2507,789],{"class":685},[592,2509,792],{"class":678},[574,2511,2513],{"id":2512},"pipeline-batching-retry","Pipeline (Batching & Retry)",[506,2515,2516,2517,2520],{},"For production, wrap your adapter with ",[510,2518,2519],{},"createDrainPipeline"," to batch events and retry on failure:",[582,2522,2524],{"className":664,"code":2523,"filename":666,"language":667,"meta":588,"style":588},"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",[510,2525,2526,2548,2566,2586,2590,2614,2643,2662,2668,2688,2692],{"__ignoreMap":588},[592,2527,2528,2530,2533,2535,2538,2540,2542,2544,2546],{"class":594,"line":595},[592,2529,675],{"class":674},[592,2531,2532],{"class":674}," type",[592,2534,700],{"class":685},[592,2536,2537],{"class":678}," DrainContext",[592,2539,706],{"class":685},[592,2541,709],{"class":674},[592,2543,686],{"class":685},[592,2545,714],{"class":601},[592,2547,692],{"class":685},[592,2549,2550,2552,2554,2556,2558,2560,2562,2564],{"class":594,"line":695},[592,2551,675],{"class":674},[592,2553,700],{"class":685},[592,2555,2356],{"class":678},[592,2557,706],{"class":685},[592,2559,709],{"class":674},[592,2561,686],{"class":685},[592,2563,2365],{"class":601},[592,2565,692],{"class":685},[592,2567,2568,2570,2572,2575,2577,2579,2581,2584],{"class":594,"line":719},[592,2569,675],{"class":674},[592,2571,700],{"class":685},[592,2573,2574],{"class":678}," createDrainPipeline",[592,2576,706],{"class":685},[592,2578,709],{"class":674},[592,2580,686],{"class":685},[592,2582,2583],{"class":601},"evlog\u002Fpipeline",[592,2585,692],{"class":685},[592,2587,2588],{"class":594,"line":738},[592,2589,742],{"emptyLinePlaceholder":741},[592,2591,2592,2594,2597,2599,2601,2604,2607,2610,2612],{"class":594,"line":745},[592,2593,804],{"class":803},[592,2595,2596],{"class":678}," pipeline ",[592,2598,810],{"class":685},[592,2600,2574],{"class":748},[592,2602,2603],{"class":685},"\u003C",[592,2605,2606],{"class":598},"DrainContext",[592,2608,2609],{"class":685},">",[592,2611,752],{"class":678},[592,2613,755],{"class":685},[592,2615,2616,2619,2621,2623,2626,2628,2631,2633,2636,2638,2641],{"class":594,"line":758},[592,2617,2618],{"class":761},"  batch",[592,2620,765],{"class":685},[592,2622,700],{"class":685},[592,2624,2625],{"class":761}," size",[592,2627,765],{"class":685},[592,2629,2630],{"class":992}," 50",[592,2632,882],{"class":685},[592,2634,2635],{"class":761}," intervalMs",[592,2637,765],{"class":685},[592,2639,2640],{"class":992}," 5000",[592,2642,783],{"class":685},[592,2644,2645,2648,2650,2652,2655,2657,2660],{"class":594,"line":786},[592,2646,2647],{"class":761},"  retry",[592,2649,765],{"class":685},[592,2651,700],{"class":685},[592,2653,2654],{"class":761}," maxAttempts",[592,2656,765],{"class":685},[592,2658,2659],{"class":992}," 3",[592,2661,783],{"class":685},[592,2663,2664,2666],{"class":594,"line":795},[592,2665,789],{"class":685},[592,2667,792],{"class":678},[592,2669,2670,2672,2675,2677,2680,2682,2685],{"class":594,"line":800},[592,2671,804],{"class":803},[592,2673,2674],{"class":678}," drain ",[592,2676,810],{"class":685},[592,2678,2679],{"class":748}," pipeline",[592,2681,752],{"class":678},[592,2683,2684],{"class":748},"createAxiomDrain",[592,2686,2687],{"class":678},"())\n",[592,2689,2690],{"class":594,"line":834},[592,2691,742],{"emptyLinePlaceholder":741},[592,2693,2694,2696,2698,2700,2702,2704,2706,2708,2710,2712],{"class":594,"line":839},[592,2695,842],{"class":674},[592,2697,845],{"class":678},[592,2699,848],{"class":685},[592,2701,851],{"class":748},[592,2703,2421],{"class":678},[592,2705,882],{"class":685},[592,2707,700],{"class":685},[592,2709,2674],{"class":678},[592,2711,789],{"class":685},[592,2713,792],{"class":678},[999,2715,2716,2717,2720,2721,2724],{"color":1001,"icon":13},"Call ",[510,2718,2719],{},"drain.flush()"," on server shutdown to ensure all buffered events are sent. See the ",[559,2722,2723],{"href":467},"Pipeline docs"," for all options.",[570,2726,2728],{"id":2727},"tail-sampling","Tail Sampling",[506,2730,1411,2731,2734],{},[510,2732,2733],{},"keep"," to force-retain specific events regardless of head sampling:",[582,2736,2738],{"className":664,"code":2737,"filename":666,"language":667,"meta":588,"style":588},"await app.register(evlog, {\n  drain: createAxiomDrain(),\n  keep: (ctx) => {\n    if (ctx.duration && ctx.duration > 2000) ctx.shouldKeep = true\n  },\n})\n",[510,2739,2740,2756,2768,2785,2829,2833],{"__ignoreMap":588},[592,2741,2742,2744,2746,2748,2750,2752,2754],{"class":594,"line":595},[592,2743,842],{"class":674},[592,2745,845],{"class":678},[592,2747,848],{"class":685},[592,2749,851],{"class":748},[592,2751,2421],{"class":678},[592,2753,882],{"class":685},[592,2755,901],{"class":685},[592,2757,2758,2760,2762,2764,2766],{"class":594,"line":695},[592,2759,2430],{"class":761},[592,2761,765],{"class":685},[592,2763,2356],{"class":748},[592,2765,2437],{"class":678},[592,2767,2046],{"class":685},[592,2769,2770,2773,2775,2777,2779,2781,2783],{"class":594,"line":719},[592,2771,2772],{"class":748},"  keep",[592,2774,765],{"class":685},[592,2776,888],{"class":685},[592,2778,2451],{"class":891},[592,2780,895],{"class":685},[592,2782,898],{"class":803},[592,2784,901],{"class":685},[592,2786,2787,2790,2792,2794,2796,2799,2802,2805,2807,2809,2812,2815,2817,2819,2821,2824,2826],{"class":594,"line":738},[592,2788,2789],{"class":674},"    if",[592,2791,888],{"class":761},[592,2793,2451],{"class":678},[592,2795,848],{"class":685},[592,2797,2798],{"class":678},"duration",[592,2800,2801],{"class":685}," &&",[592,2803,2804],{"class":678}," ctx",[592,2806,848],{"class":685},[592,2808,2798],{"class":678},[592,2810,2811],{"class":685}," >",[592,2813,2814],{"class":992}," 2000",[592,2816,1308],{"class":761},[592,2818,2451],{"class":678},[592,2820,848],{"class":685},[592,2822,2823],{"class":678},"shouldKeep",[592,2825,1087],{"class":685},[592,2827,2828],{"class":826}," true\n",[592,2830,2831],{"class":594,"line":745},[592,2832,2503],{"class":685},[592,2834,2835,2837],{"class":594,"line":758},[592,2836,789],{"class":685},[592,2838,792],{"class":678},[570,2840,2842],{"id":2841},"route-filtering","Route Filtering",[506,2844,2845,2846,517,2849,2852],{},"Control which routes are logged with ",[510,2847,2848],{},"include",[510,2850,2851],{},"exclude"," patterns:",[582,2854,2856],{"className":664,"code":2855,"filename":666,"language":667,"meta":588,"style":588},"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",[510,2857,2858,2874,2896,2924,2933,2960,2986,2990],{"__ignoreMap":588},[592,2859,2860,2862,2864,2866,2868,2870,2872],{"class":594,"line":595},[592,2861,842],{"class":674},[592,2863,845],{"class":678},[592,2865,848],{"class":685},[592,2867,851],{"class":748},[592,2869,2421],{"class":678},[592,2871,882],{"class":685},[592,2873,901],{"class":685},[592,2875,2876,2879,2881,2884,2886,2889,2891,2894],{"class":594,"line":695},[592,2877,2878],{"class":761},"  include",[592,2880,765],{"class":685},[592,2882,2883],{"class":678}," [",[592,2885,780],{"class":685},[592,2887,2888],{"class":601},"\u002Fapi\u002F**",[592,2890,780],{"class":685},[592,2892,2893],{"class":678},"]",[592,2895,2046],{"class":685},[592,2897,2898,2901,2903,2905,2907,2910,2912,2914,2916,2918,2920,2922],{"class":594,"line":719},[592,2899,2900],{"class":761},"  exclude",[592,2902,765],{"class":685},[592,2904,2883],{"class":678},[592,2906,780],{"class":685},[592,2908,2909],{"class":601},"\u002F_internal\u002F**",[592,2911,780],{"class":685},[592,2913,882],{"class":685},[592,2915,686],{"class":685},[592,2917,877],{"class":601},[592,2919,780],{"class":685},[592,2921,2893],{"class":678},[592,2923,2046],{"class":685},[592,2925,2926,2929,2931],{"class":594,"line":738},[592,2927,2928],{"class":761},"  routes",[592,2930,765],{"class":685},[592,2932,901],{"class":685},[592,2934,2935,2938,2941,2943,2945,2947,2949,2951,2953,2956,2958],{"class":594,"line":745},[592,2936,2937],{"class":685},"    '",[592,2939,2940],{"class":761},"\u002Fapi\u002Fauth\u002F**",[592,2942,780],{"class":685},[592,2944,765],{"class":685},[592,2946,700],{"class":685},[592,2948,770],{"class":761},[592,2950,765],{"class":685},[592,2952,686],{"class":685},[592,2954,2955],{"class":601},"auth-service",[592,2957,780],{"class":685},[592,2959,783],{"class":685},[592,2961,2962,2964,2967,2969,2971,2973,2975,2977,2979,2982,2984],{"class":594,"line":758},[592,2963,2937],{"class":685},[592,2965,2966],{"class":761},"\u002Fapi\u002Fpayment\u002F**",[592,2968,780],{"class":685},[592,2970,765],{"class":685},[592,2972,700],{"class":685},[592,2974,770],{"class":761},[592,2976,765],{"class":685},[592,2978,686],{"class":685},[592,2980,2981],{"class":601},"payment-service",[592,2983,780],{"class":685},[592,2985,783],{"class":685},[592,2987,2988],{"class":594,"line":786},[592,2989,2503],{"class":685},[592,2991,2992,2994],{"class":594,"line":795},[592,2993,789],{"class":685},[592,2995,792],{"class":678},[570,2997,2999],{"id":2998},"run-locally","Run Locally",[582,3001,3004],{"className":584,"code":3002,"filename":3003,"language":587,"meta":588,"style":588},"git clone https:\u002F\u002Fgithub.com\u002Fhugorcd\u002Fevlog.git\ncd evlog\npnpm install\npnpm run example:fastify\n","Terminal",[510,3005,3006,3017,3025,3032],{"__ignoreMap":588},[592,3007,3008,3011,3014],{"class":594,"line":595},[592,3009,3010],{"class":598},"git",[592,3012,3013],{"class":601}," clone",[592,3015,3016],{"class":601}," https:\u002F\u002Fgithub.com\u002Fhugorcd\u002Fevlog.git\n",[592,3018,3019,3022],{"class":594,"line":695},[592,3020,3021],{"class":748},"cd",[592,3023,3024],{"class":601}," evlog\n",[592,3026,3027,3029],{"class":594,"line":719},[592,3028,586],{"class":598},[592,3030,3031],{"class":601}," install\n",[592,3033,3034,3036,3039],{"class":594,"line":738},[592,3035,586],{"class":598},[592,3037,3038],{"class":601}," run",[592,3040,3041],{"class":601}," example:fastify\n",[506,3043,3044,3045,3049],{},"Open ",[559,3046,3047],{"href":3047,"rel":3048},"http:\u002F\u002Flocalhost:3000",[563]," to explore the interactive test UI.",[3051,3052,3053],"card-group",{},[3054,3055,3059],"card",{"icon":3056,"title":3057,"to":3058},"i-simple-icons-github","Source Code","https:\u002F\u002Fgithub.com\u002Fhugorcd\u002Fevlog\u002Ftree\u002Fmain\u002Fexamples\u002Ffastify","Browse the complete Fastify example source on GitHub.",[570,3061,3063],{"id":3062},"next-steps","Next Steps",[531,3065,3066,3071,3076,3081],{},[534,3067,3068,3070],{},[559,3069,46],{"href":47},": Design comprehensive events with context layering",[534,3072,3073,3075],{},[559,3074,128],{"href":133},": Send logs to Axiom, Sentry, PostHog, and more",[534,3077,3078,3080],{},[559,3079,61],{"href":62},": Control log volume with head and tail sampling",[534,3082,3083,3085,3086,1938,3088,1942,3090,3092],{},[559,3084,51],{"href":52},": Throw errors with ",[510,3087,1937],{},[510,3089,1941],{},[510,3091,1945],{}," 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