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Install",[618,619,620,651,669,687],"code-group",{},[621,622,628],"pre",{"className":623,"code":624,"filename":625,"language":626,"meta":627,"style":627},"language-bash shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","pnpm add evlog hono @hono\u002Fnode-server\n","pnpm","bash","",[543,629,630],{"__ignoreMap":627},[631,632,635,638,642,645,648],"span",{"class":633,"line":634},"line",1,[631,636,625],{"class":637},"sBMFI",[631,639,641],{"class":640},"sfazB"," add",[631,643,644],{"class":640}," evlog",[631,646,647],{"class":640}," hono",[631,649,650],{"class":640}," @hono\u002Fnode-server\n",[621,652,655],{"className":623,"code":653,"filename":654,"language":626,"meta":627,"style":627},"bun add evlog hono @hono\u002Fnode-server\n","bun",[543,656,657],{"__ignoreMap":627},[631,658,659,661,663,665,667],{"class":633,"line":634},[631,660,654],{"class":637},[631,662,641],{"class":640},[631,664,644],{"class":640},[631,666,647],{"class":640},[631,668,650],{"class":640},[621,670,673],{"className":623,"code":671,"filename":672,"language":626,"meta":627,"style":627},"yarn add evlog hono @hono\u002Fnode-server\n","yarn",[543,674,675],{"__ignoreMap":627},[631,676,677,679,681,683,685],{"class":633,"line":634},[631,678,672],{"class":637},[631,680,641],{"class":640},[631,682,644],{"class":640},[631,684,647],{"class":640},[631,686,650],{"class":640},[621,688,691],{"className":623,"code":689,"filename":690,"language":626,"meta":627,"style":627},"npm install evlog hono @hono\u002Fnode-server\n","npm",[543,692,693],{"__ignoreMap":627},[631,694,695,697,700,702,704],{"class":633,"line":634},[631,696,690],{"class":637},[631,698,699],{"class":640}," install",[631,701,644],{"class":640},[631,703,647],{"class":640},[631,705,650],{"class":640},[613,707,709],{"id":708},"_2-initialize-and-register-the-middleware","2. 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})\n})\n",[543,1145,1146,1178,1205,1237,1241,1274,1278,1304,1354,1358,1382,1436,1440,1464],{"__ignoreMap":627},[631,1147,1148,1150,1152,1154,1156,1158,1161,1163,1165,1168,1170,1172,1174,1176],{"class":633,"line":634},[631,1149,919],{"class":730},[631,1151,922],{"class":726},[631,1153,947],{"class":829},[631,1155,833],{"class":730},[631,1157,861],{"class":726},[631,1159,1160],{"class":640},"\u002Fusers\u002F:id",[631,1162,861],{"class":726},[631,1164,800],{"class":726},[631,1166,1167],{"class":884}," async",[631,1169,961],{"class":726},[631,1171,965],{"class":964},[631,1173,968],{"class":726},[631,1175,971],{"class":884},[631,1177,974],{"class":726},[631,1179,1180,1183,1186,1189,1191,1193,1195,1197,1199,1201,1203],{"class":633,"line":749},[631,1181,1182],{"class":884},"  const",[631,1184,1185],{"class":730}," log",[631,1187,1188],{"class":726}," 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sum",[631,1423,833],{"class":842},[631,1425,1426],{"class":730},"orders",[631,1428,1429],{"class":842},") ",[631,1431,870],{"class":726},[631,1433,734],{"class":726},[631,1435,873],{"class":842},[631,1437,1438],{"class":633,"line":916},[631,1439,823],{"emptyLinePlaceholder":822},[631,1441,1442,1444,1446,1448,1450,1452,1454,1456,1458,1460,1462],{"class":633,"line":935},[631,1443,1027],{"class":722},[631,1445,1030],{"class":730},[631,1447,922],{"class":726},[631,1449,1035],{"class":829},[631,1451,833],{"class":842},[631,1453,1005],{"class":726},[631,1455,1256],{"class":730},[631,1457,800],{"class":726},[631,1459,1364],{"class":730},[631,1461,734],{"class":726},[631,1463,873],{"class":842},[631,1465,1466,1468],{"class":633,"line":940},[631,1467,870],{"class":726},[631,1469,873],{"class":730},[539,1471,1472],{},"All fields are merged into a single wide event emitted when the request completes:",[621,1474,1477],{"className":623,"code":1475,"filename":1476,"language":626,"meta":627,"style":627},"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",[543,1478,1479,1490,1510,1526],{"__ignoreMap":627},[631,1480,1481,1484,1487],{"class":633,"line":634},[631,1482,1483],{"class":637},"14:58:15",[631,1485,1486],{"class":640}," INFO",[631,1488,1489],{"class":730}," [my-api] GET \u002Fusers\u002Fusr_123 200 in 12ms\n",[631,1491,1492,1495,1498,1501,1504,1507],{"class":633,"line":749},[631,1493,1494],{"class":637},"  ├─",[631,1496,1497],{"class":640}," orders:",[631,1499,1500],{"class":640}," count=",[631,1502,1503],{"class":1097},"2",[631,1505,1506],{"class":640}," totalRevenue=",[631,1508,1509],{"class":1097},"6298\n",[631,1511,1512,1514,1517,1520,1523],{"class":633,"line":770},[631,1513,1494],{"class":637},[631,1515,1516],{"class":640}," user:",[631,1518,1519],{"class":640}," id=usr_123",[631,1521,1522],{"class":640}," name=Alice",[631,1524,1525],{"class":640}," plan=pro\n",[631,1527,1528,1531,1534],{"class":633,"line":791},[631,1529,1530],{"class":637},"  └─",[631,1532,1533],{"class":640}," requestId:",[631,1535,1536],{"class":640}," 4a8ff3a8-...\n",[609,1538,1540],{"id":1539},"accessing-the-logger-deeper-in-the-stack","Accessing the logger deeper in the stack",[539,1542,1543,1545,1546,1548,1549,1551],{},[543,1544,549],{}," is the idiomatic accessor inside a route handler. Once you are a few\nlayers down (a service, a repository), threading ",[543,1547,965],{}," everywhere gets noisy. ",[543,1550,553],{},"\nresolves the same request logger without it:",[621,1553,1556],{"className":712,"code":1554,"filename":1555,"language":715,"meta":627,"style":627},"import { useLogger } from 'evlog\u002Fhono'\n\nexport async function chargeCard(amount: number) {\n  const log = useLogger()\n  log.set({ payment: { amount } })\n}\n","src\u002Fservices\u002Fpayment.ts",[543,1557,1558,1577,1581,1608,1620,1648],{"__ignoreMap":627},[631,1559,1560,1562,1564,1567,1569,1571,1573,1575],{"class":633,"line":634},[631,1561,723],{"class":722},[631,1563,727],{"class":726},[631,1565,1566],{"class":730}," useLogger",[631,1568,734],{"class":726},[631,1570,737],{"class":722},[631,1572,740],{"class":726},[631,1574,545],{"class":640},[631,1576,746],{"class":726},[631,1578,1579],{"class":633,"line":749},[631,1580,823],{"emptyLinePlaceholder":822},[631,1582,1583,1586,1588,1591,1594,1596,1599,1601,1604,1606],{"class":633,"line":770},[631,1584,1585],{"class":722},"export",[631,1587,1167],{"class":884},[631,1589,1590],{"class":884}," function",[631,1592,1593],{"class":829}," chargeCard",[631,1595,833],{"class":726},[631,1597,1598],{"class":964},"amount",[631,1600,846],{"class":726},[631,1602,1603],{"class":637}," number",[631,1605,968],{"class":726},[631,1607,974],{"class":726},[631,1609,1610,1612,1614,1616,1618],{"class":633,"line":791},[631,1611,1182],{"class":884},[631,1613,1185],{"class":730},[631,1615,1188],{"class":726},[631,1617,1566],{"class":829},[631,1619,908],{"class":842},[631,1621,1622,1624,1626,1628,1630,1632,1635,1637,1639,1642,1644,1646],{"class":633,"line":819},[631,1623,1245],{"class":730},[631,1625,922],{"class":726},[631,1627,1000],{"class":829},[631,1629,833],{"class":842},[631,1631,1005],{"class":726},[631,1633,1634],{"class":842}," payment",[631,1636,846],{"class":726},[631,1638,727],{"class":726},[631,1640,1641],{"class":730}," amount",[631,1643,734],{"class":726},[631,1645,734],{"class":726},[631,1647,873],{"class":842},[631,1649,1650],{"class":633,"line":826},[631,1651,1652],{"class":726},"}\n",[539,1654,1655],{},"Both return the same logger, so pick whichever reads better at the call site.",[1104,1657,1659,1661,1662,1665,1666,1669,1670,1673,1674,1677,1678,1680],{"color":1106,"icon":1658},"i-lucide-info",[543,1660,553],{}," is backed by ",[543,1663,1664],{},"AsyncLocalStorage",". On Cloudflare Workers this requires the\n",[543,1667,1668],{},"nodejs_compat"," (or ",[543,1671,1672],{},"nodejs_als",") compatibility flag in ",[543,1675,1676],{},"wrangler.toml",". ",[543,1679,549],{},"\nworks with or without it, so deployments that cannot enable the flag keep using it.",[613,1682,1684],{"id":1683},"background-work","Background work",[539,1686,1687,1692,1693,846],{},[1108,1688,1689],{},[543,1690,1691],{},"log.fork()"," runs work under a forked logger that emits its own wide event, correlated\nto the request via ",[543,1694,1695],{},"_parentRequestId",[621,1697,1699],{"className":712,"code":1698,"filename":714,"language":715,"meta":627,"style":627},"app.post('\u002Fapi\u002Forders', (c) => {\n  c.get('log').fork('send-receipt', async () => {\n    await sendReceipt()\n    useLogger().set({ email: { sent: true } })\n  })\n  return c.json({ ok: true })\n})\n",[543,1700,1701,1731,1774,1784,1820,1827,1851],{"__ignoreMap":627},[631,1702,1703,1705,1707,1710,1712,1714,1717,1719,1721,1723,1725,1727,1729],{"class":633,"line":634},[631,1704,919],{"class":730},[631,1706,922],{"class":726},[631,1708,1709],{"class":829},"post",[631,1711,833],{"class":730},[631,1713,861],{"class":726},[631,1715,1716],{"class":640},"\u002Fapi\u002Forders",[631,1718,861],{"class":726},[631,1720,800],{"class":726},[631,1722,961],{"class":726},[631,1724,965],{"class":964},[631,1726,968],{"class":726},[631,1728,971],{"class":884},[631,1730,974],{"class":726},[631,1732,1733,1735,1737,1739,1741,1743,1745,1747,1749,1751,1754,1756,1758,1761,1763,1765,1767,1770,1772],{"class":633,"line":749},[631,1734,980],{"class":730},[631,1736,922],{"class":726},[631,1738,947],{"class":829},[631,1740,833],{"class":842},[631,1742,861],{"class":726},[631,1744,991],{"class":640},[631,1746,861],{"class":726},[631,1748,968],{"class":842},[631,1750,922],{"class":726},[631,1752,1753],{"class":829},"fork",[631,1755,833],{"class":842},[631,1757,861],{"class":726},[631,1759,1760],{"class":640},"send-receipt",[631,1762,861],{"class":726},[631,1764,800],{"class":726},[631,1766,1167],{"class":884},[631,1768,1769],{"class":726}," ()",[631,1771,971],{"class":884},[631,1773,974],{"class":726},[631,1775,1776,1779,1782],{"class":633,"line":770},[631,1777,1778],{"class":722},"    await",[631,1780,1781],{"class":829}," sendReceipt",[631,1783,908],{"class":842},[631,1785,1786,1789,1792,1794,1796,1798,1800,1803,1805,1807,1810,1812,1814,1816,1818],{"class":633,"line":791},[631,1787,1788],{"class":829},"    useLogger",[631,1790,1791],{"class":842},"()",[631,1793,922],{"class":726},[631,1795,1000],{"class":829},[631,1797,833],{"class":842},[631,1799,1005],{"class":726},[631,1801,1802],{"class":842}," email",[631,1804,846],{"class":726},[631,1806,727],{"class":726},[631,1808,1809],{"class":842}," sent",[631,1811,846],{"class":726},[631,1813,1048],{"class":1047},[631,1815,734],{"class":726},[631,1817,734],{"class":726},[631,1819,873],{"class":842},[631,1821,1822,1825],{"class":633,"line":819},[631,1823,1824],{"class":726},"  }",[631,1826,873],{"class":842},[631,1828,1829,1831,1833,1835,1837,1839,1841,1843,1845,1847,1849],{"class":633,"line":826},[631,1830,1027],{"class":722},[631,1832,1030],{"class":730},[631,1834,922],{"class":726},[631,1836,1035],{"class":829},[631,1838,833],{"class":842},[631,1840,1005],{"class":726},[631,1842,1042],{"class":842},[631,1844,846],{"class":726},[631,1846,1048],{"class":1047},[631,1848,734],{"class":726},[631,1850,873],{"class":842},[631,1852,1853,1855],{"class":633,"line":839},[631,1854,870],{"class":726},[631,1856,873],{"class":730},[539,1858,1859,1860,1866,1867,1870,1871,1875],{},"If you schedule async work after the response without forking, post-emit ",[1108,1861,1862,1865],{},[543,1863,1864],{},"[evlog]"," warnings","\nhelp you notice stale ",[543,1868,1869],{},"set()"," calls. See ",[598,1872,1874],{"href":1873},"\u002Flearn\u002Fwide-events#after-emit-sealing-and-background-work","After emit"," in Wide events.",[609,1877,1879],{"id":1878},"error-handling","Error Handling",[539,1881,1882,1883,1886,1887,1890,1891,1894,1895,1898],{},"Use ",[543,1884,1885],{},"createError"," for structured errors with ",[543,1888,1889],{},"why",", ",[543,1892,1893],{},"fix",", and ",[543,1896,1897],{},"link"," fields:",[621,1900,1902],{"className":712,"code":1901,"filename":714,"language":715,"meta":627,"style":627},"import { createError, parseError } from 'evlog'\n\napp.get('\u002Fcheckout', (c) => {\n  const log = c.get('log')\n  log.set({ cart: { items: 3, total: 9999 } })\n\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",[543,1903,1904,1928,1932,1961,1985,2028,2032,2043,2060,2072,2088,2104,2120,2126],{"__ignoreMap":627},[631,1905,1906,1908,1910,1913,1915,1918,1920,1922,1924,1926],{"class":633,"line":634},[631,1907,723],{"class":722},[631,1909,727],{"class":726},[631,1911,1912],{"class":730}," createError",[631,1914,800],{"class":726},[631,1916,1917],{"class":730}," parseError",[631,1919,734],{"class":726},[631,1921,737],{"class":722},[631,1923,740],{"class":726},[631,1925,786],{"class":640},[631,1927,746],{"class":726},[631,1929,1930],{"class":633,"line":749},[631,1931,823],{"emptyLinePlaceholder":822},[631,1933,1934,1936,1938,1940,1942,1944,1947,1949,1951,1953,1955,1957,1959],{"class":633,"line":770},[631,1935,919],{"class":730},[631,1937,922],{"class":726},[631,1939,947],{"class":829},[631,1941,833],{"class":730},[631,1943,861],{"class":726},[631,1945,1946],{"class":640},"\u002Fcheckout",[631,1948,861],{"class":726},[631,1950,800],{"class":726},[631,1952,961],{"class":726},[631,1954,965],{"class":964},[631,1956,968],{"class":726},[631,1958,971],{"class":884},[631,1960,974],{"class":726},[631,1962,1963,1965,1967,1969,1971,1973,1975,1977,1979,1981,1983],{"class":633,"line":791},[631,1964,1182],{"class":884},[631,1966,1185],{"class":730},[631,1968,1188],{"class":726},[631,1970,1030],{"class":730},[631,1972,922],{"class":726},[631,1974,947],{"class":829},[631,1976,833],{"class":842},[631,1978,861],{"class":726},[631,1980,991],{"class":640},[631,1982,861],{"class":726},[631,1984,873],{"class":842},[631,1986,1987,1989,1991,1993,1995,1997,2000,2002,2004,2007,2009,2012,2014,2017,2019,2022,2024,2026],{"class":633,"line":819},[631,1988,1245],{"class":730},[631,1990,922],{"class":726},[631,1992,1000],{"class":829},[631,1994,833],{"class":842},[631,1996,1005],{"class":726},[631,1998,1999],{"class":842}," cart",[631,2001,846],{"class":726},[631,2003,727],{"class":726},[631,2005,2006],{"class":842}," items",[631,2008,846],{"class":726},[631,2010,2011],{"class":1097}," 3",[631,2013,800],{"class":726},[631,2015,2016],{"class":842}," total",[631,2018,846],{"class":726},[631,2020,2021],{"class":1097}," 9999",[631,2023,734],{"class":726},[631,2025,734],{"class":726},[631,2027,873],{"class":842},[631,2029,2030],{"class":633,"line":826},[631,2031,823],{"emptyLinePlaceholder":822},[631,2033,2034,2037,2039,2041],{"class":633,"line":839},[631,2035,2036],{"class":722},"  throw",[631,2038,1912],{"class":829},[631,2040,833],{"class":842},[631,2042,836],{"class":726},[631,2044,2045,2048,2050,2052,2055,2057],{"class":633,"line":867},[631,2046,2047],{"class":842},"    message",[631,2049,846],{"class":726},[631,2051,740],{"class":726},[631,2053,2054],{"class":640},"Payment failed",[631,2056,861],{"class":726},[631,2058,2059],{"class":726},",\n",[631,2061,2062,2065,2067,2070],{"class":633,"line":876},[631,2063,2064],{"class":842},"    status",[631,2066,846],{"class":726},[631,2068,2069],{"class":1097}," 402",[631,2071,2059],{"class":726},[631,2073,2074,2077,2079,2081,2084,2086],{"class":633,"line":881},[631,2075,2076],{"class":842},"    why",[631,2078,846],{"class":726},[631,2080,740],{"class":726},[631,2082,2083],{"class":640},"Card declined by issuer",[631,2085,861],{"class":726},[631,2087,2059],{"class":726},[631,2089,2090,2093,2095,2097,2100,2102],{"class":633,"line":911},[631,2091,2092],{"class":842},"    fix",[631,2094,846],{"class":726},[631,2096,740],{"class":726},[631,2098,2099],{"class":640},"Try a different payment method",[631,2101,861],{"class":726},[631,2103,2059],{"class":726},[631,2105,2106,2109,2111,2113,2116,2118],{"class":633,"line":916},[631,2107,2108],{"class":842},"    link",[631,2110,846],{"class":726},[631,2112,740],{"class":726},[631,2114,2115],{"class":640},"https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined",[631,2117,861],{"class":726},[631,2119,2059],{"class":726},[631,2121,2122,2124],{"class":633,"line":935},[631,2123,1824],{"class":726},[631,2125,873],{"class":842},[631,2127,2128,2130],{"class":633,"line":940},[631,2129,870],{"class":726},[631,2131,873],{"class":730},[539,2133,2134,2135,2138],{},"Handle errors globally with ",[543,2136,2137],{},"app.onError"," to return structured JSON responses:",[621,2140,2142],{"className":712,"code":2141,"filename":714,"language":715,"meta":627,"style":627},"import type { ContentfulStatusCode } from 'hono\u002Futils\u002Fhttp-status'\n\napp.onError((error, c) => {\n  c.get('log').error(error)\n  const parsed = parseError(error)\n\n  return c.json(\n    {\n      message: parsed.message,\n      why: parsed.why,\n      fix: parsed.fix,\n      link: parsed.link,\n    },\n    parsed.status as ContentfulStatusCode,\n  )\n})\n",[543,2143,2144,2166,2170,2196,2224,2241,2245,2258,2263,2279,2294,2309,2324,2329,2346,2351],{"__ignoreMap":627},[631,2145,2146,2148,2150,2152,2155,2157,2159,2161,2164],{"class":633,"line":634},[631,2147,723],{"class":722},[631,2149,803],{"class":722},[631,2151,727],{"class":726},[631,2153,2154],{"class":730}," ContentfulStatusCode",[631,2156,734],{"class":726},[631,2158,737],{"class":722},[631,2160,740],{"class":726},[631,2162,2163],{"class":640},"hono\u002Futils\u002Fhttp-status",[631,2165,746],{"class":726},[631,2167,2168],{"class":633,"line":749},[631,2169,823],{"emptyLinePlaceholder":822},[631,2171,2172,2174,2176,2179,2181,2183,2186,2188,2190,2192,2194],{"class":633,"line":770},[631,2173,919],{"class":730},[631,2175,922],{"class":726},[631,2177,2178],{"class":829},"onError",[631,2180,833],{"class":730},[631,2182,833],{"class":726},[631,2184,2185],{"class":964},"error",[631,2187,800],{"class":726},[631,2189,1030],{"class":964},[631,2191,968],{"class":726},[631,2193,971],{"class":884},[631,2195,974],{"class":726},[631,2197,2198,2200,2202,2204,2206,2208,2210,2212,2214,2216,2218,2220,2222],{"class":633,"line":791},[631,2199,980],{"class":730},[631,2201,922],{"class":726},[631,2203,947],{"class":829},[631,2205,833],{"class":842},[631,2207,861],{"class":726},[631,2209,991],{"class":640},[631,2211,861],{"class":726},[631,2213,968],{"class":842},[631,2215,922],{"class":726},[631,2217,2185],{"class":829},[631,2219,833],{"class":842},[631,2221,2185],{"class":730},[631,2223,873],{"class":842},[631,2225,2226,2228,2231,2233,2235,2237,2239],{"class":633,"line":819},[631,2227,1182],{"class":884},[631,2229,2230],{"class":730}," parsed",[631,2232,1188],{"class":726},[631,2234,1917],{"class":829},[631,2236,833],{"class":842},[631,2238,2185],{"class":730},[631,2240,873],{"class":842},[631,2242,2243],{"class":633,"line":826},[631,2244,823],{"emptyLinePlaceholder":822},[631,2246,2247,2249,2251,2253,2255],{"class":633,"line":839},[631,2248,1027],{"class":722},[631,2250,1030],{"class":730},[631,2252,922],{"class":726},[631,2254,1035],{"class":829},[631,2256,2257],{"class":842},"(\n",[631,2259,2260],{"class":633,"line":867},[631,2261,2262],{"class":726},"    {\n",[631,2264,2265,2268,2270,2272,2274,2277],{"class":633,"line":876},[631,2266,2267],{"class":842},"      message",[631,2269,846],{"class":726},[631,2271,2230],{"class":730},[631,2273,922],{"class":726},[631,2275,2276],{"class":730},"message",[631,2278,2059],{"class":726},[631,2280,2281,2284,2286,2288,2290,2292],{"class":633,"line":881},[631,2282,2283],{"class":842},"      why",[631,2285,846],{"class":726},[631,2287,2230],{"class":730},[631,2289,922],{"class":726},[631,2291,1889],{"class":730},[631,2293,2059],{"class":726},[631,2295,2296,2299,2301,2303,2305,2307],{"class":633,"line":911},[631,2297,2298],{"class":842},"      fix",[631,2300,846],{"class":726},[631,2302,2230],{"class":730},[631,2304,922],{"class":726},[631,2306,1893],{"class":730},[631,2308,2059],{"class":726},[631,2310,2311,2314,2316,2318,2320,2322],{"class":633,"line":916},[631,2312,2313],{"class":842},"      link",[631,2315,846],{"class":726},[631,2317,2230],{"class":730},[631,2319,922],{"class":726},[631,2321,1897],{"class":730},[631,2323,2059],{"class":726},[631,2325,2326],{"class":633,"line":935},[631,2327,2328],{"class":726},"    },\n",[631,2330,2331,2334,2336,2339,2342,2344],{"class":633,"line":940},[631,2332,2333],{"class":730},"    parsed",[631,2335,922],{"class":726},[631,2337,2338],{"class":730},"status",[631,2340,2341],{"class":722}," as",[631,2343,2154],{"class":637},[631,2345,2059],{"class":726},[631,2347,2348],{"class":633,"line":977},[631,2349,2350],{"class":842},"  )\n",[631,2352,2353,2355],{"class":633,"line":1024},[631,2354,870],{"class":726},[631,2356,873],{"class":730},[539,2358,2359,2362,2363,2365,2366,2369,2370,2373,2374,2377],{},[543,2360,2361],{},"parseError()"," types ",[543,2364,2338],{}," as a ",[543,2367,2368],{},"number",", while Hono’s ",[543,2371,2372],{},"c.json()"," second argument expects ",[543,2375,2376],{},"ContentfulStatusCode",". The cast matches what you already return at runtime and satisfies TypeScript.",[539,2379,2380],{},"The error is captured and logged with both the custom context and structured error fields:",[621,2382,2384],{"className":623,"code":2383,"filename":1476,"language":626,"meta":627,"style":627},"14:58:20 ERROR [my-api] GET \u002Fcheckout 402 in 3ms\n  ├─ error: name=EvlogError message=Payment failed status=402\n  ├─ cart: items=3 total=9999\n  └─ requestId: 880a50ac-...\n",[543,2385,2386,2397,2419,2438],{"__ignoreMap":627},[631,2387,2388,2391,2394],{"class":633,"line":634},[631,2389,2390],{"class":637},"14:58:20",[631,2392,2393],{"class":640}," ERROR",[631,2395,2396],{"class":730}," [my-api] GET \u002Fcheckout 402 in 3ms\n",[631,2398,2399,2401,2404,2407,2410,2413,2416],{"class":633,"line":749},[631,2400,1494],{"class":637},[631,2402,2403],{"class":640}," error:",[631,2405,2406],{"class":640}," name=EvlogError",[631,2408,2409],{"class":640}," message=Payment",[631,2411,2412],{"class":640}," failed",[631,2414,2415],{"class":640}," status=",[631,2417,2418],{"class":1097},"402\n",[631,2420,2421,2423,2426,2429,2432,2435],{"class":633,"line":770},[631,2422,1494],{"class":637},[631,2424,2425],{"class":640}," cart:",[631,2427,2428],{"class":640}," items=",[631,2430,2431],{"class":1097},"3",[631,2433,2434],{"class":640}," total=",[631,2436,2437],{"class":1097},"9999\n",[631,2439,2440,2442,2444],{"class":633,"line":791},[631,2441,1530],{"class":637},[631,2443,1533],{"class":640},[631,2445,2446],{"class":640}," 880a50ac-...\n",[609,2448,504],{"id":2449},"configuration",[539,2451,2452,2453,2456,2457,2459],{},"See the ",[598,2454,2455],{"href":505},"Configuration reference"," for all available options (",[543,2458,830],{},", middleware options, sampling, silent mode, etc.).",[609,2461,2463],{"id":2462},"drain-enrichers","Drain & Enrichers",[539,2465,2466],{},"Configure drain adapters and enrichers directly in the middleware options:",[621,2468,2470],{"className":712,"code":2469,"filename":714,"language":715,"meta":627,"style":627},"import { createAxiomDrain } from 'evlog\u002Faxiom'\nimport { createUserAgentEnricher } from 'evlog\u002Fenrichers'\n\nconst userAgent = createUserAgentEnricher()\n\napp.use(evlog({\n  drain: createAxiomDrain(),\n  enrich: (ctx) => {\n    userAgent(ctx)\n    ctx.event.region = process.env.FLY_REGION\n  },\n}))\n",[543,2471,2472,2492,2512,2516,2529,2533,2549,2562,2580,2591,2621,2626],{"__ignoreMap":627},[631,2473,2474,2476,2478,2481,2483,2485,2487,2490],{"class":633,"line":634},[631,2475,723],{"class":722},[631,2477,727],{"class":726},[631,2479,2480],{"class":730}," createAxiomDrain",[631,2482,734],{"class":726},[631,2484,737],{"class":722},[631,2486,740],{"class":726},[631,2488,2489],{"class":640},"evlog\u002Faxiom",[631,2491,746],{"class":726},[631,2493,2494,2496,2498,2501,2503,2505,2507,2510],{"class":633,"line":749},[631,2495,723],{"class":722},[631,2497,727],{"class":726},[631,2499,2500],{"class":730}," createUserAgentEnricher",[631,2502,734],{"class":726},[631,2504,737],{"class":722},[631,2506,740],{"class":726},[631,2508,2509],{"class":640},"evlog\u002Fenrichers",[631,2511,746],{"class":726},[631,2513,2514],{"class":633,"line":770},[631,2515,823],{"emptyLinePlaceholder":822},[631,2517,2518,2520,2523,2525,2527],{"class":633,"line":791},[631,2519,885],{"class":884},[631,2521,2522],{"class":730}," userAgent ",[631,2524,891],{"class":726},[631,2526,2500],{"class":829},[631,2528,908],{"class":730},[631,2530,2531],{"class":633,"line":819},[631,2532,823],{"emptyLinePlaceholder":822},[631,2534,2535,2537,2539,2541,2543,2545,2547],{"class":633,"line":826},[631,2536,919],{"class":730},[631,2538,922],{"class":726},[631,2540,925],{"class":829},[631,2542,833],{"class":730},[631,2544,786],{"class":829},[631,2546,833],{"class":730},[631,2548,836],{"class":726},[631,2550,2551,2554,2556,2558,2560],{"class":633,"line":839},[631,2552,2553],{"class":842},"  drain",[631,2555,846],{"class":726},[631,2557,2480],{"class":829},[631,2559,1791],{"class":730},[631,2561,2059],{"class":726},[631,2563,2564,2567,2569,2571,2574,2576,2578],{"class":633,"line":867},[631,2565,2566],{"class":829},"  enrich",[631,2568,846],{"class":726},[631,2570,961],{"class":726},[631,2572,2573],{"class":964},"ctx",[631,2575,968],{"class":726},[631,2577,971],{"class":884},[631,2579,974],{"class":726},[631,2581,2582,2585,2587,2589],{"class":633,"line":876},[631,2583,2584],{"class":829},"    userAgent",[631,2586,833],{"class":842},[631,2588,2573],{"class":730},[631,2590,873],{"class":842},[631,2592,2593,2596,2598,2601,2603,2606,2608,2611,2613,2616,2618],{"class":633,"line":881},[631,2594,2595],{"class":730},"    ctx",[631,2597,922],{"class":726},[631,2599,2600],{"class":730},"event",[631,2602,922],{"class":726},[631,2604,2605],{"class":730},"region",[631,2607,1188],{"class":726},[631,2609,2610],{"class":730}," process",[631,2612,922],{"class":726},[631,2614,2615],{"class":730},"env",[631,2617,922],{"class":726},[631,2619,2620],{"class":730},"FLY_REGION\n",[631,2622,2623],{"class":633,"line":911},[631,2624,2625],{"class":726},"  },\n",[631,2627,2628,2630],{"class":633,"line":916},[631,2629,870],{"class":726},[631,2631,2632],{"class":730},"))\n",[613,2634,2636],{"id":2635},"pipeline-batching-retry","Pipeline (Batching & Retry)",[539,2638,2639,2640,2643],{},"For production, wrap your adapter with ",[543,2641,2642],{},"createDrainPipeline"," to batch events and retry on failure:",[621,2645,2647],{"className":712,"code":2646,"filename":714,"language":715,"meta":627,"style":627},"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\napp.use(evlog({ drain }))\n",[543,2648,2649,2670,2688,2708,2712,2734,2763,2781,2787,2806,2810],{"__ignoreMap":627},[631,2650,2651,2653,2655,2657,2660,2662,2664,2666,2668],{"class":633,"line":634},[631,2652,723],{"class":722},[631,2654,803],{"class":722},[631,2656,727],{"class":726},[631,2658,2659],{"class":730}," DrainContext",[631,2661,734],{"class":726},[631,2663,737],{"class":722},[631,2665,740],{"class":726},[631,2667,786],{"class":640},[631,2669,746],{"class":726},[631,2671,2672,2674,2676,2678,2680,2682,2684,2686],{"class":633,"line":749},[631,2673,723],{"class":722},[631,2675,727],{"class":726},[631,2677,2480],{"class":730},[631,2679,734],{"class":726},[631,2681,737],{"class":722},[631,2683,740],{"class":726},[631,2685,2489],{"class":640},[631,2687,746],{"class":726},[631,2689,2690,2692,2694,2697,2699,2701,2703,2706],{"class":633,"line":770},[631,2691,723],{"class":722},[631,2693,727],{"class":726},[631,2695,2696],{"class":730}," createDrainPipeline",[631,2698,734],{"class":726},[631,2700,737],{"class":722},[631,2702,740],{"class":726},[631,2704,2705],{"class":640},"evlog\u002Fpipeline",[631,2707,746],{"class":726},[631,2709,2710],{"class":633,"line":791},[631,2711,823],{"emptyLinePlaceholder":822},[631,2713,2714,2716,2719,2721,2723,2725,2728,2730,2732],{"class":633,"line":819},[631,2715,885],{"class":884},[631,2717,2718],{"class":730}," pipeline ",[631,2720,891],{"class":726},[631,2722,2696],{"class":829},[631,2724,899],{"class":726},[631,2726,2727],{"class":637},"DrainContext",[631,2729,905],{"class":726},[631,2731,833],{"class":730},[631,2733,836],{"class":726},[631,2735,2736,2739,2741,2743,2746,2748,2751,2753,2756,2758,2761],{"class":633,"line":826},[631,2737,2738],{"class":842},"  batch",[631,2740,846],{"class":726},[631,2742,727],{"class":726},[631,2744,2745],{"class":842}," size",[631,2747,846],{"class":726},[631,2749,2750],{"class":1097}," 50",[631,2752,800],{"class":726},[631,2754,2755],{"class":842}," intervalMs",[631,2757,846],{"class":726},[631,2759,2760],{"class":1097}," 5000",[631,2762,864],{"class":726},[631,2764,2765,2768,2770,2772,2775,2777,2779],{"class":633,"line":839},[631,2766,2767],{"class":842},"  retry",[631,2769,846],{"class":726},[631,2771,727],{"class":726},[631,2773,2774],{"class":842}," maxAttempts",[631,2776,846],{"class":726},[631,2778,2011],{"class":1097},[631,2780,864],{"class":726},[631,2782,2783,2785],{"class":633,"line":867},[631,2784,870],{"class":726},[631,2786,873],{"class":730},[631,2788,2789,2791,2794,2796,2799,2801,2804],{"class":633,"line":876},[631,2790,885],{"class":884},[631,2792,2793],{"class":730}," drain ",[631,2795,891],{"class":726},[631,2797,2798],{"class":829}," pipeline",[631,2800,833],{"class":730},[631,2802,2803],{"class":829},"createAxiomDrain",[631,2805,932],{"class":730},[631,2807,2808],{"class":633,"line":881},[631,2809,823],{"emptyLinePlaceholder":822},[631,2811,2812,2814,2816,2818,2820,2822,2824,2826,2828,2830],{"class":633,"line":911},[631,2813,919],{"class":730},[631,2815,922],{"class":726},[631,2817,925],{"class":829},[631,2819,833],{"class":730},[631,2821,786],{"class":829},[631,2823,833],{"class":730},[631,2825,1005],{"class":726},[631,2827,2793],{"class":730},[631,2829,870],{"class":726},[631,2831,2632],{"class":730},[1104,2833,2834,2835,2838,2839,2842],{"color":1106,"icon":1658},"Call ",[543,2836,2837],{},"drain.flush()"," on server shutdown to ensure all buffered events are sent. See the ",[598,2840,2841],{"href":493},"Pipeline docs"," for all options.",[609,2844,2846],{"id":2845},"tail-sampling","Tail Sampling",[539,2848,1882,2849,2852],{},[543,2850,2851],{},"keep"," to force-retain specific events regardless of head sampling:",[621,2854,2856],{"className":712,"code":2855,"filename":714,"language":715,"meta":627,"style":627},"app.use(evlog({\n  drain: createAxiomDrain(),\n  keep: (ctx) => {\n    if (ctx.duration && ctx.duration > 2000) ctx.shouldKeep = true\n  },\n}))\n",[543,2857,2858,2874,2886,2903,2947,2951],{"__ignoreMap":627},[631,2859,2860,2862,2864,2866,2868,2870,2872],{"class":633,"line":634},[631,2861,919],{"class":730},[631,2863,922],{"class":726},[631,2865,925],{"class":829},[631,2867,833],{"class":730},[631,2869,786],{"class":829},[631,2871,833],{"class":730},[631,2873,836],{"class":726},[631,2875,2876,2878,2880,2882,2884],{"class":633,"line":749},[631,2877,2553],{"class":842},[631,2879,846],{"class":726},[631,2881,2480],{"class":829},[631,2883,1791],{"class":730},[631,2885,2059],{"class":726},[631,2887,2888,2891,2893,2895,2897,2899,2901],{"class":633,"line":770},[631,2889,2890],{"class":829},"  keep",[631,2892,846],{"class":726},[631,2894,961],{"class":726},[631,2896,2573],{"class":964},[631,2898,968],{"class":726},[631,2900,971],{"class":884},[631,2902,974],{"class":726},[631,2904,2905,2908,2910,2912,2914,2917,2920,2923,2925,2927,2930,2933,2935,2937,2939,2942,2944],{"class":633,"line":791},[631,2906,2907],{"class":722},"    if",[631,2909,961],{"class":842},[631,2911,2573],{"class":730},[631,2913,922],{"class":726},[631,2915,2916],{"class":730},"duration",[631,2918,2919],{"class":726}," &&",[631,2921,2922],{"class":730}," ctx",[631,2924,922],{"class":726},[631,2926,2916],{"class":730},[631,2928,2929],{"class":726}," >",[631,2931,2932],{"class":1097}," 2000",[631,2934,1429],{"class":842},[631,2936,2573],{"class":730},[631,2938,922],{"class":726},[631,2940,2941],{"class":730},"shouldKeep",[631,2943,1188],{"class":726},[631,2945,2946],{"class":1047}," true\n",[631,2948,2949],{"class":633,"line":819},[631,2950,2625],{"class":726},[631,2952,2953,2955],{"class":633,"line":826},[631,2954,870],{"class":726},[631,2956,2632],{"class":730},[609,2958,2960],{"id":2959},"route-filtering","Route Filtering",[539,2962,2963,2964,2967,2968,2971],{},"Control which routes are logged with ",[543,2965,2966],{},"include"," and ",[543,2969,2970],{},"exclude"," patterns:",[621,2973,2975],{"className":712,"code":2974,"filename":714,"language":715,"meta":627,"style":627},"app.use(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",[543,2976,2977,2993,3015,3043,3052,3079,3105,3109],{"__ignoreMap":627},[631,2978,2979,2981,2983,2985,2987,2989,2991],{"class":633,"line":634},[631,2980,919],{"class":730},[631,2982,922],{"class":726},[631,2984,925],{"class":829},[631,2986,833],{"class":730},[631,2988,786],{"class":829},[631,2990,833],{"class":730},[631,2992,836],{"class":726},[631,2994,2995,2998,3000,3003,3005,3008,3010,3013],{"class":633,"line":749},[631,2996,2997],{"class":842},"  include",[631,2999,846],{"class":726},[631,3001,3002],{"class":730}," 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'",[631,3058,3059],{"class":842},"\u002Fapi\u002Fauth\u002F**",[631,3061,861],{"class":726},[631,3063,846],{"class":726},[631,3065,727],{"class":726},[631,3067,851],{"class":842},[631,3069,846],{"class":726},[631,3071,740],{"class":726},[631,3073,3074],{"class":640},"auth-service",[631,3076,861],{"class":726},[631,3078,864],{"class":726},[631,3080,3081,3083,3086,3088,3090,3092,3094,3096,3098,3101,3103],{"class":633,"line":826},[631,3082,3056],{"class":726},[631,3084,3085],{"class":842},"\u002Fapi\u002Fpayment\u002F**",[631,3087,861],{"class":726},[631,3089,846],{"class":726},[631,3091,727],{"class":726},[631,3093,851],{"class":842},[631,3095,846],{"class":726},[631,3097,740],{"class":726},[631,3099,3100],{"class":640},"payment-service",[631,3102,861],{"class":726},[631,3104,864],{"class":726},[631,3106,3107],{"class":633,"line":839},[631,3108,2625],{"class":726},[631,3110,3111,3113],{"class":633,"line":867},[631,3112,870],{"class":726},[631,3114,2632],{"class":730},[609,3116,3118],{"id":3117},"client-side-logging","Client-Side Logging",[539,3120,1882,3121,3124],{},[543,3122,3123],{},"evlog\u002Fhttp"," to send structured logs from any frontend to your Hono server. This works with any client framework (React, Vue, Svelte, vanilla JS).",[613,3126,3128],{"id":3127},"browser-setup","Browser setup",[621,3130,3133],{"className":712,"code":3131,"filename":3132,"language":715,"meta":627,"style":627},"import { initLogger, log } from 'evlog'\nimport { createHttpLogDrain } from 'evlog\u002Fhttp'\n\nconst drain = createHttpLogDrain({\n  drain: { endpoint: '\u002Fv1\u002Fingest' },\n})\ninitLogger({ drain })\n\nlog.info({ action: 'page_view', path: location.pathname 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https:\u002F\u002Fgithub.com\u002Fhugorcd\u002Fevlog.git\n",[631,3506,3507,3510],{"class":633,"line":749},[631,3508,3509],{"class":829},"cd",[631,3511,3512],{"class":640}," evlog\n",[631,3514,3515,3517],{"class":633,"line":770},[631,3516,625],{"class":637},[631,3518,3519],{"class":640}," install\n",[631,3521,3522,3524,3527],{"class":633,"line":791},[631,3523,625],{"class":637},[631,3525,3526],{"class":640}," example",[631,3528,3529],{"class":640}," hono\n",[539,3531,3532,3533,3537],{},"Open ",[598,3534,3535],{"href":3535,"rel":3536},"http:\u002F\u002Flocalhost:3000",[602]," to explore the interactive test UI.",[3539,3540,3541],"card-group",{},[3542,3543,3547],"card",{"icon":3544,"title":3545,"to":3546},"i-simple-icons-github","Source Code","https:\u002F\u002Fgithub.com\u002Fhugorcd\u002Fevlog\u002Ftree\u002Fmain\u002Fexamples\u002Fhono","Browse the complete Hono example source on GitHub.",[609,3549,3551],{"id":3550},"next-steps","Next Steps",[539,3553,3554,3555,3557],{},"Deepen your 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