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Install",[619,620,621,652,670,688],"code-group",{},[622,623,629],"pre",{"className":624,"code":625,"filename":626,"language":627,"meta":628,"style":628},"language-bash shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","pnpm add evlog hono @hono\u002Fnode-server\n","pnpm","bash","",[544,630,631],{"__ignoreMap":628},[632,633,636,639,643,646,649],"span",{"class":634,"line":635},"line",1,[632,637,626],{"class":638},"sBMFI",[632,640,642],{"class":641},"sfazB"," add",[632,644,645],{"class":641}," evlog",[632,647,648],{"class":641}," hono",[632,650,651],{"class":641}," @hono\u002Fnode-server\n",[622,653,656],{"className":624,"code":654,"filename":655,"language":627,"meta":628,"style":628},"bun add evlog hono @hono\u002Fnode-server\n","bun",[544,657,658],{"__ignoreMap":628},[632,659,660,662,664,666,668],{"class":634,"line":635},[632,661,655],{"class":638},[632,663,642],{"class":641},[632,665,645],{"class":641},[632,667,648],{"class":641},[632,669,651],{"class":641},[622,671,674],{"className":624,"code":672,"filename":673,"language":627,"meta":628,"style":628},"yarn add evlog hono @hono\u002Fnode-server\n","yarn",[544,675,676],{"__ignoreMap":628},[632,677,678,680,682,684,686],{"class":634,"line":635},[632,679,673],{"class":638},[632,681,642],{"class":641},[632,683,645],{"class":641},[632,685,648],{"class":641},[632,687,651],{"class":641},[622,689,692],{"className":624,"code":690,"filename":691,"language":627,"meta":628,"style":628},"npm install evlog hono @hono\u002Fnode-server\n","npm",[544,693,694],{"__ignoreMap":628},[632,695,696,698,701,703,705],{"class":634,"line":635},[632,697,691],{"class":638},[632,699,700],{"class":641}," install",[632,702,645],{"class":641},[632,704,648],{"class":641},[632,706,651],{"class":641},[614,708,710],{"id":709},"_2-initialize-and-register-the-middleware","2. Initialize and register the middleware",[622,712,717],{"className":713,"code":714,"filename":715,"language":716,"meta":628,"style":628},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { serve } from '@hono\u002Fnode-server'\nimport { Hono } from 'hono'\nimport { initLogger } from 'evlog'\nimport { evlog, type EvlogVariables } from 'evlog\u002Fhono'\n\ninitLogger({\n  env: { service: 'my-api' },\n})\n\nconst app = new Hono\u003CEvlogVariables>()\n\napp.use(evlog())\n\napp.get('\u002Fhealth', (c) => {\n  c.get('log').set({ route: 'health' })\n  return c.json({ ok: true })\n})\n\nserve({ fetch: app.fetch, port: 3000 })\n","src\u002Findex.ts","typescript",[544,718,719,748,769,790,818,825,838,866,875,880,910,915,934,939,976,1023,1054,1061,1066],{"__ignoreMap":628},[632,720,721,725,729,733,736,739,742,745],{"class":634,"line":635},[632,722,724],{"class":723},"s7zQu","import",[632,726,728],{"class":727},"sMK4o"," 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return",[632,1030,1031],{"class":731}," c",[632,1033,923],{"class":727},[632,1035,1036],{"class":830},"json",[632,1038,834],{"class":843},[632,1040,1006],{"class":727},[632,1042,1043],{"class":843}," ok",[632,1045,847],{"class":727},[632,1047,1049],{"class":1048},"sfNiH"," true",[632,1051,735],{"class":727},[632,1053,874],{"class":843},[632,1055,1057,1059],{"class":634,"line":1056},17,[632,1058,871],{"class":727},[632,1060,874],{"class":731},[632,1062,1064],{"class":634,"line":1063},18,[632,1065,824],{"emptyLinePlaceholder":823},[632,1067,1069,1072,1074,1076,1079,1081,1084,1086,1089,1091,1094,1096,1100,1102],{"class":634,"line":1068},19,[632,1070,1071],{"class":830},"serve",[632,1073,834],{"class":731},[632,1075,1006],{"class":727},[632,1077,1078],{"class":843}," fetch",[632,1080,847],{"class":727},[632,1082,1083],{"class":731}," app",[632,1085,923],{"class":727},[632,1087,1088],{"class":731},"fetch",[632,1090,801],{"class":727},[632,1092,1093],{"class":843}," 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One request = one wide event:",[622,1143,1145],{"className":713,"code":1144,"filename":715,"language":716,"meta":628,"style":628},"app.get('\u002Fusers\u002F:id', async (c) => {\n  const log = c.get('log')\n  const userId = c.req.param('id')\n\n  log.set({ user: { id: userId } })\n\n  const user = await db.findUser(userId)\n  log.set({ user: { name: user.name, plan: user.plan } })\n\n  const orders = await db.findOrders(userId)\n  log.set({ orders: { count: orders.length, totalRevenue: sum(orders) } })\n\n  return c.json({ user, orders })\n})\n",[544,1146,1147,1179,1206,1238,1242,1275,1279,1305,1355,1359,1383,1437,1441,1465],{"__ignoreMap":628},[632,1148,1149,1151,1153,1155,1157,1159,1162,1164,1166,1169,1171,1173,1175,1177],{"class":634,"line":635},[632,1150,920],{"class":731},[632,1152,923],{"class":727},[632,1154,948],{"class":830},[632,1156,834],{"class":731},[632,1158,862],{"class":727},[632,1160,1161],{"class":641},"\u002Fusers\u002F:id",[632,1163,862],{"class":727},[632,1165,801],{"class":727},[632,1167,1168],{"class":885}," async",[632,1170,962],{"class":727},[632,1172,966],{"class":965},[632,1174,969],{"class":727},[632,1176,972],{"class":885},[632,1178,975],{"class":727},[632,1180,1181,1184,1187,1190,1192,1194,1196,1198,1200,1202,1204],{"class":634,"line":750},[632,1182,1183],{"class":885},"  const",[632,1185,1186],{"class":731}," log",[632,1188,1189],{"class":727}," 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sum",[632,1424,834],{"class":843},[632,1426,1427],{"class":731},"orders",[632,1429,1430],{"class":843},") ",[632,1432,871],{"class":727},[632,1434,735],{"class":727},[632,1436,874],{"class":843},[632,1438,1439],{"class":634,"line":917},[632,1440,824],{"emptyLinePlaceholder":823},[632,1442,1443,1445,1447,1449,1451,1453,1455,1457,1459,1461,1463],{"class":634,"line":936},[632,1444,1028],{"class":723},[632,1446,1031],{"class":731},[632,1448,923],{"class":727},[632,1450,1036],{"class":830},[632,1452,834],{"class":843},[632,1454,1006],{"class":727},[632,1456,1257],{"class":731},[632,1458,801],{"class":727},[632,1460,1365],{"class":731},[632,1462,735],{"class":727},[632,1464,874],{"class":843},[632,1466,1467,1469],{"class":634,"line":941},[632,1468,871],{"class":727},[632,1470,874],{"class":731},[540,1472,1473],{},"All fields are merged into a single wide event emitted when the request completes:",[622,1475,1478],{"className":624,"code":1476,"filename":1477,"language":627,"meta":628,"style":628},"14:58:15 INFO [my-api] GET \u002Fusers\u002Fusr_123 200 in 12ms\n  ├─ orders: count=2 totalRevenue=6298\n  ├─ user: id=usr_123 name=Alice plan=pro\n  └─ requestId: 4a8ff3a8-...\n","Terminal output",[544,1479,1480,1491,1511,1527],{"__ignoreMap":628},[632,1481,1482,1485,1488],{"class":634,"line":635},[632,1483,1484],{"class":638},"14:58:15",[632,1486,1487],{"class":641}," INFO",[632,1489,1490],{"class":731}," [my-api] GET \u002Fusers\u002Fusr_123 200 in 12ms\n",[632,1492,1493,1496,1499,1502,1505,1508],{"class":634,"line":750},[632,1494,1495],{"class":638},"  ├─",[632,1497,1498],{"class":641}," orders:",[632,1500,1501],{"class":641}," count=",[632,1503,1504],{"class":1098},"2",[632,1506,1507],{"class":641}," totalRevenue=",[632,1509,1510],{"class":1098},"6298\n",[632,1512,1513,1515,1518,1521,1524],{"class":634,"line":771},[632,1514,1495],{"class":638},[632,1516,1517],{"class":641}," user:",[632,1519,1520],{"class":641}," id=usr_123",[632,1522,1523],{"class":641}," name=Alice",[632,1525,1526],{"class":641}," plan=pro\n",[632,1528,1529,1532,1535],{"class":634,"line":792},[632,1530,1531],{"class":638},"  └─",[632,1533,1534],{"class":641}," requestId:",[632,1536,1537],{"class":641}," 4a8ff3a8-...\n",[610,1539,1541],{"id":1540},"accessing-the-logger-deeper-in-the-stack","Accessing the logger deeper in the stack",[540,1543,1544,1546,1547,1549,1550,1552],{},[544,1545,550],{}," is the idiomatic accessor inside a route handler. Once you are a few\nlayers down — a service, a repository — threading ",[544,1548,966],{}," everywhere gets noisy. ",[544,1551,554],{},"\nresolves the same request logger without it:",[622,1554,1557],{"className":713,"code":1555,"filename":1556,"language":716,"meta":628,"style":628},"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",[544,1558,1559,1578,1582,1609,1621,1649],{"__ignoreMap":628},[632,1560,1561,1563,1565,1568,1570,1572,1574,1576],{"class":634,"line":635},[632,1562,724],{"class":723},[632,1564,728],{"class":727},[632,1566,1567],{"class":731}," useLogger",[632,1569,735],{"class":727},[632,1571,738],{"class":723},[632,1573,741],{"class":727},[632,1575,546],{"class":641},[632,1577,747],{"class":727},[632,1579,1580],{"class":634,"line":750},[632,1581,824],{"emptyLinePlaceholder":823},[632,1583,1584,1587,1589,1592,1595,1597,1600,1602,1605,1607],{"class":634,"line":771},[632,1585,1586],{"class":723},"export",[632,1588,1168],{"class":885},[632,1590,1591],{"class":885}," function",[632,1593,1594],{"class":830}," chargeCard",[632,1596,834],{"class":727},[632,1598,1599],{"class":965},"amount",[632,1601,847],{"class":727},[632,1603,1604],{"class":638}," number",[632,1606,969],{"class":727},[632,1608,975],{"class":727},[632,1610,1611,1613,1615,1617,1619],{"class":634,"line":792},[632,1612,1183],{"class":885},[632,1614,1186],{"class":731},[632,1616,1189],{"class":727},[632,1618,1567],{"class":830},[632,1620,909],{"class":843},[632,1622,1623,1625,1627,1629,1631,1633,1636,1638,1640,1643,1645,1647],{"class":634,"line":820},[632,1624,1246],{"class":731},[632,1626,923],{"class":727},[632,1628,1001],{"class":830},[632,1630,834],{"class":843},[632,1632,1006],{"class":727},[632,1634,1635],{"class":843}," payment",[632,1637,847],{"class":727},[632,1639,728],{"class":727},[632,1641,1642],{"class":731}," amount",[632,1644,735],{"class":727},[632,1646,735],{"class":727},[632,1648,874],{"class":843},[632,1650,1651],{"class":634,"line":827},[632,1652,1653],{"class":727},"}\n",[540,1655,1656],{},"Both return the same logger — pick whichever reads better at the call site.",[1105,1658,1659,1661,1662,1665,1666,1669,1670,1673,1674,1677,1678,1680],{"color":1107,"icon":13},[544,1660,554],{}," is backed by ",[544,1663,1664],{},"AsyncLocalStorage",". On Cloudflare Workers this requires the\n",[544,1667,1668],{},"nodejs_compat"," (or ",[544,1671,1672],{},"nodejs_als",") compatibility flag in ",[544,1675,1676],{},"wrangler.toml",". ",[544,1679,550],{},"\nworks with or without it, so deployments that cannot enable the flag keep using it.",[614,1682,1684],{"id":1683},"background-work","Background work",[540,1686,1687,1692,1693,847],{},[1109,1688,1689],{},[544,1690,1691],{},"log.fork()"," runs work under a child logger that emits its own wide event, correlated\nto the request via ",[544,1694,1695],{},"_parentRequestId",[622,1697,1699],{"className":713,"code":1698,"filename":715,"language":716,"meta":628,"style":628},"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",[544,1700,1701,1731,1774,1784,1820,1827,1851],{"__ignoreMap":628},[632,1702,1703,1705,1707,1710,1712,1714,1717,1719,1721,1723,1725,1727,1729],{"class":634,"line":635},[632,1704,920],{"class":731},[632,1706,923],{"class":727},[632,1708,1709],{"class":830},"post",[632,1711,834],{"class":731},[632,1713,862],{"class":727},[632,1715,1716],{"class":641},"\u002Fapi\u002Forders",[632,1718,862],{"class":727},[632,1720,801],{"class":727},[632,1722,962],{"class":727},[632,1724,966],{"class":965},[632,1726,969],{"class":727},[632,1728,972],{"class":885},[632,1730,975],{"class":727},[632,1732,1733,1735,1737,1739,1741,1743,1745,1747,1749,1751,1754,1756,1758,1761,1763,1765,1767,1770,1772],{"class":634,"line":750},[632,1734,981],{"class":731},[632,1736,923],{"class":727},[632,1738,948],{"class":830},[632,1740,834],{"class":843},[632,1742,862],{"class":727},[632,1744,992],{"class":641},[632,1746,862],{"class":727},[632,1748,969],{"class":843},[632,1750,923],{"class":727},[632,1752,1753],{"class":830},"fork",[632,1755,834],{"class":843},[632,1757,862],{"class":727},[632,1759,1760],{"class":641},"send-receipt",[632,1762,862],{"class":727},[632,1764,801],{"class":727},[632,1766,1168],{"class":885},[632,1768,1769],{"class":727}," ()",[632,1771,972],{"class":885},[632,1773,975],{"class":727},[632,1775,1776,1779,1782],{"class":634,"line":771},[632,1777,1778],{"class":723},"    await",[632,1780,1781],{"class":830}," sendReceipt",[632,1783,909],{"class":843},[632,1785,1786,1789,1792,1794,1796,1798,1800,1803,1805,1807,1810,1812,1814,1816,1818],{"class":634,"line":792},[632,1787,1788],{"class":830},"    useLogger",[632,1790,1791],{"class":843},"()",[632,1793,923],{"class":727},[632,1795,1001],{"class":830},[632,1797,834],{"class":843},[632,1799,1006],{"class":727},[632,1801,1802],{"class":843}," email",[632,1804,847],{"class":727},[632,1806,728],{"class":727},[632,1808,1809],{"class":843}," sent",[632,1811,847],{"class":727},[632,1813,1049],{"class":1048},[632,1815,735],{"class":727},[632,1817,735],{"class":727},[632,1819,874],{"class":843},[632,1821,1822,1825],{"class":634,"line":820},[632,1823,1824],{"class":727},"  }",[632,1826,874],{"class":843},[632,1828,1829,1831,1833,1835,1837,1839,1841,1843,1845,1847,1849],{"class":634,"line":827},[632,1830,1028],{"class":723},[632,1832,1031],{"class":731},[632,1834,923],{"class":727},[632,1836,1036],{"class":830},[632,1838,834],{"class":843},[632,1840,1006],{"class":727},[632,1842,1043],{"class":843},[632,1844,847],{"class":727},[632,1846,1049],{"class":1048},[632,1848,735],{"class":727},[632,1850,874],{"class":843},[632,1852,1853,1855],{"class":634,"line":840},[632,1854,871],{"class":727},[632,1856,874],{"class":731},[540,1858,1859,1860,1866,1867,1870,1871,923],{},"If you schedule async work after the response without forking, post-emit ",[1109,1861,1862,1865],{},[544,1863,1864],{},"[evlog]"," warnings","\nhelp you notice stale ",[544,1868,1869],{},"set()"," calls. See ",[599,1872,1874],{"href":1873},"\u002Flearn\u002Fwide-events#after-emit-sealing-and-background-work","Wide events — After emit",[610,1876,1878],{"id":1877},"error-handling","Error Handling",[540,1880,1881,1882,1885,1886,1889,1890,1893,1894,1897],{},"Use ",[544,1883,1884],{},"createError"," for structured errors with ",[544,1887,1888],{},"why",", ",[544,1891,1892],{},"fix",", and ",[544,1895,1896],{},"link"," fields:",[622,1899,1901],{"className":713,"code":1900,"filename":715,"language":716,"meta":628,"style":628},"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",[544,1902,1903,1927,1931,1960,1984,2027,2031,2042,2059,2071,2087,2103,2119,2125],{"__ignoreMap":628},[632,1904,1905,1907,1909,1912,1914,1917,1919,1921,1923,1925],{"class":634,"line":635},[632,1906,724],{"class":723},[632,1908,728],{"class":727},[632,1910,1911],{"class":731}," createError",[632,1913,801],{"class":727},[632,1915,1916],{"class":731}," parseError",[632,1918,735],{"class":727},[632,1920,738],{"class":723},[632,1922,741],{"class":727},[632,1924,787],{"class":641},[632,1926,747],{"class":727},[632,1928,1929],{"class":634,"line":750},[632,1930,824],{"emptyLinePlaceholder":823},[632,1932,1933,1935,1937,1939,1941,1943,1946,1948,1950,1952,1954,1956,1958],{"class":634,"line":771},[632,1934,920],{"class":731},[632,1936,923],{"class":727},[632,1938,948],{"class":830},[632,1940,834],{"class":731},[632,1942,862],{"class":727},[632,1944,1945],{"class":641},"\u002Fcheckout",[632,1947,862],{"class":727},[632,1949,801],{"class":727},[632,1951,962],{"class":727},[632,1953,966],{"class":965},[632,1955,969],{"class":727},[632,1957,972],{"class":885},[632,1959,975],{"class":727},[632,1961,1962,1964,1966,1968,1970,1972,1974,1976,1978,1980,1982],{"class":634,"line":792},[632,1963,1183],{"class":885},[632,1965,1186],{"class":731},[632,1967,1189],{"class":727},[632,1969,1031],{"class":731},[632,1971,923],{"class":727},[632,1973,948],{"class":830},[632,1975,834],{"class":843},[632,1977,862],{"class":727},[632,1979,992],{"class":641},[632,1981,862],{"class":727},[632,1983,874],{"class":843},[632,1985,1986,1988,1990,1992,1994,1996,1999,2001,2003,2006,2008,2011,2013,2016,2018,2021,2023,2025],{"class":634,"line":820},[632,1987,1246],{"class":731},[632,1989,923],{"class":727},[632,1991,1001],{"class":830},[632,1993,834],{"class":843},[632,1995,1006],{"class":727},[632,1997,1998],{"class":843}," cart",[632,2000,847],{"class":727},[632,2002,728],{"class":727},[632,2004,2005],{"class":843}," items",[632,2007,847],{"class":727},[632,2009,2010],{"class":1098}," 3",[632,2012,801],{"class":727},[632,2014,2015],{"class":843}," total",[632,2017,847],{"class":727},[632,2019,2020],{"class":1098}," 9999",[632,2022,735],{"class":727},[632,2024,735],{"class":727},[632,2026,874],{"class":843},[632,2028,2029],{"class":634,"line":827},[632,2030,824],{"emptyLinePlaceholder":823},[632,2032,2033,2036,2038,2040],{"class":634,"line":840},[632,2034,2035],{"class":723},"  throw",[632,2037,1911],{"class":830},[632,2039,834],{"class":843},[632,2041,837],{"class":727},[632,2043,2044,2047,2049,2051,2054,2056],{"class":634,"line":868},[632,2045,2046],{"class":843},"    message",[632,2048,847],{"class":727},[632,2050,741],{"class":727},[632,2052,2053],{"class":641},"Payment failed",[632,2055,862],{"class":727},[632,2057,2058],{"class":727},",\n",[632,2060,2061,2064,2066,2069],{"class":634,"line":877},[632,2062,2063],{"class":843},"    status",[632,2065,847],{"class":727},[632,2067,2068],{"class":1098}," 402",[632,2070,2058],{"class":727},[632,2072,2073,2076,2078,2080,2083,2085],{"class":634,"line":882},[632,2074,2075],{"class":843},"    why",[632,2077,847],{"class":727},[632,2079,741],{"class":727},[632,2081,2082],{"class":641},"Card declined by issuer",[632,2084,862],{"class":727},[632,2086,2058],{"class":727},[632,2088,2089,2092,2094,2096,2099,2101],{"class":634,"line":912},[632,2090,2091],{"class":843},"    fix",[632,2093,847],{"class":727},[632,2095,741],{"class":727},[632,2097,2098],{"class":641},"Try a different payment method",[632,2100,862],{"class":727},[632,2102,2058],{"class":727},[632,2104,2105,2108,2110,2112,2115,2117],{"class":634,"line":917},[632,2106,2107],{"class":843},"    link",[632,2109,847],{"class":727},[632,2111,741],{"class":727},[632,2113,2114],{"class":641},"https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined",[632,2116,862],{"class":727},[632,2118,2058],{"class":727},[632,2120,2121,2123],{"class":634,"line":936},[632,2122,1824],{"class":727},[632,2124,874],{"class":843},[632,2126,2127,2129],{"class":634,"line":941},[632,2128,871],{"class":727},[632,2130,874],{"class":731},[540,2132,2133,2134,2137],{},"Handle errors globally with ",[544,2135,2136],{},"app.onError"," to return structured JSON responses:",[622,2139,2141],{"className":713,"code":2140,"filename":715,"language":716,"meta":628,"style":628},"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",[544,2142,2143,2165,2169,2195,2223,2240,2244,2257,2262,2278,2293,2308,2323,2328,2345,2350],{"__ignoreMap":628},[632,2144,2145,2147,2149,2151,2154,2156,2158,2160,2163],{"class":634,"line":635},[632,2146,724],{"class":723},[632,2148,804],{"class":723},[632,2150,728],{"class":727},[632,2152,2153],{"class":731}," ContentfulStatusCode",[632,2155,735],{"class":727},[632,2157,738],{"class":723},[632,2159,741],{"class":727},[632,2161,2162],{"class":641},"hono\u002Futils\u002Fhttp-status",[632,2164,747],{"class":727},[632,2166,2167],{"class":634,"line":750},[632,2168,824],{"emptyLinePlaceholder":823},[632,2170,2171,2173,2175,2178,2180,2182,2185,2187,2189,2191,2193],{"class":634,"line":771},[632,2172,920],{"class":731},[632,2174,923],{"class":727},[632,2176,2177],{"class":830},"onError",[632,2179,834],{"class":731},[632,2181,834],{"class":727},[632,2183,2184],{"class":965},"error",[632,2186,801],{"class":727},[632,2188,1031],{"class":965},[632,2190,969],{"class":727},[632,2192,972],{"class":885},[632,2194,975],{"class":727},[632,2196,2197,2199,2201,2203,2205,2207,2209,2211,2213,2215,2217,2219,2221],{"class":634,"line":792},[632,2198,981],{"class":731},[632,2200,923],{"class":727},[632,2202,948],{"class":830},[632,2204,834],{"class":843},[632,2206,862],{"class":727},[632,2208,992],{"class":641},[632,2210,862],{"class":727},[632,2212,969],{"class":843},[632,2214,923],{"class":727},[632,2216,2184],{"class":830},[632,2218,834],{"class":843},[632,2220,2184],{"class":731},[632,2222,874],{"class":843},[632,2224,2225,2227,2230,2232,2234,2236,2238],{"class":634,"line":820},[632,2226,1183],{"class":885},[632,2228,2229],{"class":731}," parsed",[632,2231,1189],{"class":727},[632,2233,1916],{"class":830},[632,2235,834],{"class":843},[632,2237,2184],{"class":731},[632,2239,874],{"class":843},[632,2241,2242],{"class":634,"line":827},[632,2243,824],{"emptyLinePlaceholder":823},[632,2245,2246,2248,2250,2252,2254],{"class":634,"line":840},[632,2247,1028],{"class":723},[632,2249,1031],{"class":731},[632,2251,923],{"class":727},[632,2253,1036],{"class":830},[632,2255,2256],{"class":843},"(\n",[632,2258,2259],{"class":634,"line":868},[632,2260,2261],{"class":727},"    {\n",[632,2263,2264,2267,2269,2271,2273,2276],{"class":634,"line":877},[632,2265,2266],{"class":843},"      message",[632,2268,847],{"class":727},[632,2270,2229],{"class":731},[632,2272,923],{"class":727},[632,2274,2275],{"class":731},"message",[632,2277,2058],{"class":727},[632,2279,2280,2283,2285,2287,2289,2291],{"class":634,"line":882},[632,2281,2282],{"class":843},"      why",[632,2284,847],{"class":727},[632,2286,2229],{"class":731},[632,2288,923],{"class":727},[632,2290,1888],{"class":731},[632,2292,2058],{"class":727},[632,2294,2295,2298,2300,2302,2304,2306],{"class":634,"line":912},[632,2296,2297],{"class":843},"      fix",[632,2299,847],{"class":727},[632,2301,2229],{"class":731},[632,2303,923],{"class":727},[632,2305,1892],{"class":731},[632,2307,2058],{"class":727},[632,2309,2310,2313,2315,2317,2319,2321],{"class":634,"line":917},[632,2311,2312],{"class":843},"      link",[632,2314,847],{"class":727},[632,2316,2229],{"class":731},[632,2318,923],{"class":727},[632,2320,1896],{"class":731},[632,2322,2058],{"class":727},[632,2324,2325],{"class":634,"line":936},[632,2326,2327],{"class":727},"    },\n",[632,2329,2330,2333,2335,2338,2341,2343],{"class":634,"line":941},[632,2331,2332],{"class":731},"    parsed",[632,2334,923],{"class":727},[632,2336,2337],{"class":731},"status",[632,2339,2340],{"class":723}," as",[632,2342,2153],{"class":638},[632,2344,2058],{"class":727},[632,2346,2347],{"class":634,"line":978},[632,2348,2349],{"class":843},"  )\n",[632,2351,2352,2354],{"class":634,"line":1025},[632,2353,871],{"class":727},[632,2355,874],{"class":731},[540,2357,2358,2361,2362,2364,2365,2368,2369,2372,2373,2376],{},[544,2359,2360],{},"parseError()"," types ",[544,2363,2337],{}," as a ",[544,2366,2367],{},"number",", while Hono’s ",[544,2370,2371],{},"c.json()"," second argument expects ",[544,2374,2375],{},"ContentfulStatusCode",". The cast matches what you already return at runtime and satisfies TypeScript.",[540,2378,2379],{},"The error is captured and logged with both the custom context and structured error fields:",[622,2381,2383],{"className":624,"code":2382,"filename":1477,"language":627,"meta":628,"style":628},"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",[544,2384,2385,2396,2418,2437],{"__ignoreMap":628},[632,2386,2387,2390,2393],{"class":634,"line":635},[632,2388,2389],{"class":638},"14:58:20",[632,2391,2392],{"class":641}," ERROR",[632,2394,2395],{"class":731}," [my-api] GET \u002Fcheckout 402 in 3ms\n",[632,2397,2398,2400,2403,2406,2409,2412,2415],{"class":634,"line":750},[632,2399,1495],{"class":638},[632,2401,2402],{"class":641}," error:",[632,2404,2405],{"class":641}," name=EvlogError",[632,2407,2408],{"class":641}," message=Payment",[632,2410,2411],{"class":641}," failed",[632,2413,2414],{"class":641}," status=",[632,2416,2417],{"class":1098},"402\n",[632,2419,2420,2422,2425,2428,2431,2434],{"class":634,"line":771},[632,2421,1495],{"class":638},[632,2423,2424],{"class":641}," cart:",[632,2426,2427],{"class":641}," items=",[632,2429,2430],{"class":1098},"3",[632,2432,2433],{"class":641}," total=",[632,2435,2436],{"class":1098},"9999\n",[632,2438,2439,2441,2443],{"class":634,"line":792},[632,2440,1531],{"class":638},[632,2442,1534],{"class":641},[632,2444,2445],{"class":641}," 880a50ac-...\n",[610,2447,504],{"id":2448},"configuration",[540,2450,2451,2452,2455,2456,2458],{},"See the ",[599,2453,2454],{"href":505},"Configuration reference"," for all available options (",[544,2457,831],{},", middleware options, sampling, silent mode, etc.).",[610,2460,2462],{"id":2461},"drain-enrichers","Drain & Enrichers",[540,2464,2465],{},"Configure drain adapters and enrichers directly in the middleware options:",[622,2467,2469],{"className":713,"code":2468,"filename":715,"language":716,"meta":628,"style":628},"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",[544,2470,2471,2491,2511,2515,2528,2532,2548,2561,2579,2590,2620,2625],{"__ignoreMap":628},[632,2472,2473,2475,2477,2480,2482,2484,2486,2489],{"class":634,"line":635},[632,2474,724],{"class":723},[632,2476,728],{"class":727},[632,2478,2479],{"class":731}," createAxiomDrain",[632,2481,735],{"class":727},[632,2483,738],{"class":723},[632,2485,741],{"class":727},[632,2487,2488],{"class":641},"evlog\u002Faxiom",[632,2490,747],{"class":727},[632,2492,2493,2495,2497,2500,2502,2504,2506,2509],{"class":634,"line":750},[632,2494,724],{"class":723},[632,2496,728],{"class":727},[632,2498,2499],{"class":731}," createUserAgentEnricher",[632,2501,735],{"class":727},[632,2503,738],{"class":723},[632,2505,741],{"class":727},[632,2507,2508],{"class":641},"evlog\u002Fenrichers",[632,2510,747],{"class":727},[632,2512,2513],{"class":634,"line":771},[632,2514,824],{"emptyLinePlaceholder":823},[632,2516,2517,2519,2522,2524,2526],{"class":634,"line":792},[632,2518,886],{"class":885},[632,2520,2521],{"class":731}," userAgent ",[632,2523,892],{"class":727},[632,2525,2499],{"class":830},[632,2527,909],{"class":731},[632,2529,2530],{"class":634,"line":820},[632,2531,824],{"emptyLinePlaceholder":823},[632,2533,2534,2536,2538,2540,2542,2544,2546],{"class":634,"line":827},[632,2535,920],{"class":731},[632,2537,923],{"class":727},[632,2539,926],{"class":830},[632,2541,834],{"class":731},[632,2543,787],{"class":830},[632,2545,834],{"class":731},[632,2547,837],{"class":727},[632,2549,2550,2553,2555,2557,2559],{"class":634,"line":840},[632,2551,2552],{"class":843},"  drain",[632,2554,847],{"class":727},[632,2556,2479],{"class":830},[632,2558,1791],{"class":731},[632,2560,2058],{"class":727},[632,2562,2563,2566,2568,2570,2573,2575,2577],{"class":634,"line":868},[632,2564,2565],{"class":830},"  enrich",[632,2567,847],{"class":727},[632,2569,962],{"class":727},[632,2571,2572],{"class":965},"ctx",[632,2574,969],{"class":727},[632,2576,972],{"class":885},[632,2578,975],{"class":727},[632,2580,2581,2584,2586,2588],{"class":634,"line":877},[632,2582,2583],{"class":830},"    userAgent",[632,2585,834],{"class":843},[632,2587,2572],{"class":731},[632,2589,874],{"class":843},[632,2591,2592,2595,2597,2600,2602,2605,2607,2610,2612,2615,2617],{"class":634,"line":882},[632,2593,2594],{"class":731},"    ctx",[632,2596,923],{"class":727},[632,2598,2599],{"class":731},"event",[632,2601,923],{"class":727},[632,2603,2604],{"class":731},"region",[632,2606,1189],{"class":727},[632,2608,2609],{"class":731}," process",[632,2611,923],{"class":727},[632,2613,2614],{"class":731},"env",[632,2616,923],{"class":727},[632,2618,2619],{"class":731},"FLY_REGION\n",[632,2621,2622],{"class":634,"line":912},[632,2623,2624],{"class":727},"  },\n",[632,2626,2627,2629],{"class":634,"line":917},[632,2628,871],{"class":727},[632,2630,2631],{"class":731},"))\n",[614,2633,2635],{"id":2634},"pipeline-batching-retry","Pipeline (Batching & Retry)",[540,2637,2638,2639,2642],{},"For production, wrap your adapter with ",[544,2640,2641],{},"createDrainPipeline"," to batch events and retry on failure:",[622,2644,2646],{"className":713,"code":2645,"filename":715,"language":716,"meta":628,"style":628},"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",[544,2647,2648,2669,2687,2707,2711,2733,2762,2780,2786,2805,2809],{"__ignoreMap":628},[632,2649,2650,2652,2654,2656,2659,2661,2663,2665,2667],{"class":634,"line":635},[632,2651,724],{"class":723},[632,2653,804],{"class":723},[632,2655,728],{"class":727},[632,2657,2658],{"class":731}," DrainContext",[632,2660,735],{"class":727},[632,2662,738],{"class":723},[632,2664,741],{"class":727},[632,2666,787],{"class":641},[632,2668,747],{"class":727},[632,2670,2671,2673,2675,2677,2679,2681,2683,2685],{"class":634,"line":750},[632,2672,724],{"class":723},[632,2674,728],{"class":727},[632,2676,2479],{"class":731},[632,2678,735],{"class":727},[632,2680,738],{"class":723},[632,2682,741],{"class":727},[632,2684,2488],{"class":641},[632,2686,747],{"class":727},[632,2688,2689,2691,2693,2696,2698,2700,2702,2705],{"class":634,"line":771},[632,2690,724],{"class":723},[632,2692,728],{"class":727},[632,2694,2695],{"class":731}," createDrainPipeline",[632,2697,735],{"class":727},[632,2699,738],{"class":723},[632,2701,741],{"class":727},[632,2703,2704],{"class":641},"evlog\u002Fpipeline",[632,2706,747],{"class":727},[632,2708,2709],{"class":634,"line":792},[632,2710,824],{"emptyLinePlaceholder":823},[632,2712,2713,2715,2718,2720,2722,2724,2727,2729,2731],{"class":634,"line":820},[632,2714,886],{"class":885},[632,2716,2717],{"class":731}," pipeline ",[632,2719,892],{"class":727},[632,2721,2695],{"class":830},[632,2723,900],{"class":727},[632,2725,2726],{"class":638},"DrainContext",[632,2728,906],{"class":727},[632,2730,834],{"class":731},[632,2732,837],{"class":727},[632,2734,2735,2738,2740,2742,2745,2747,2750,2752,2755,2757,2760],{"class":634,"line":827},[632,2736,2737],{"class":843},"  batch",[632,2739,847],{"class":727},[632,2741,728],{"class":727},[632,2743,2744],{"class":843}," size",[632,2746,847],{"class":727},[632,2748,2749],{"class":1098}," 50",[632,2751,801],{"class":727},[632,2753,2754],{"class":843}," intervalMs",[632,2756,847],{"class":727},[632,2758,2759],{"class":1098}," 5000",[632,2761,865],{"class":727},[632,2763,2764,2767,2769,2771,2774,2776,2778],{"class":634,"line":840},[632,2765,2766],{"class":843},"  retry",[632,2768,847],{"class":727},[632,2770,728],{"class":727},[632,2772,2773],{"class":843}," maxAttempts",[632,2775,847],{"class":727},[632,2777,2010],{"class":1098},[632,2779,865],{"class":727},[632,2781,2782,2784],{"class":634,"line":868},[632,2783,871],{"class":727},[632,2785,874],{"class":731},[632,2787,2788,2790,2793,2795,2798,2800,2803],{"class":634,"line":877},[632,2789,886],{"class":885},[632,2791,2792],{"class":731}," drain ",[632,2794,892],{"class":727},[632,2796,2797],{"class":830}," pipeline",[632,2799,834],{"class":731},[632,2801,2802],{"class":830},"createAxiomDrain",[632,2804,933],{"class":731},[632,2806,2807],{"class":634,"line":882},[632,2808,824],{"emptyLinePlaceholder":823},[632,2810,2811,2813,2815,2817,2819,2821,2823,2825,2827,2829],{"class":634,"line":912},[632,2812,920],{"class":731},[632,2814,923],{"class":727},[632,2816,926],{"class":830},[632,2818,834],{"class":731},[632,2820,787],{"class":830},[632,2822,834],{"class":731},[632,2824,1006],{"class":727},[632,2826,2792],{"class":731},[632,2828,871],{"class":727},[632,2830,2631],{"class":731},[1105,2832,2833,2834,2837,2838,2841],{"color":1107,"icon":13},"Call ",[544,2835,2836],{},"drain.flush()"," on server shutdown to ensure all buffered events are sent. See the ",[599,2839,2840],{"href":496},"Pipeline docs"," for all options.",[610,2843,2845],{"id":2844},"tail-sampling","Tail Sampling",[540,2847,1881,2848,2851],{},[544,2849,2850],{},"keep"," to force-retain specific events regardless of head sampling:",[622,2853,2855],{"className":713,"code":2854,"filename":715,"language":716,"meta":628,"style":628},"app.use(evlog({\n  drain: createAxiomDrain(),\n  keep: (ctx) => {\n    if (ctx.duration && ctx.duration > 2000) ctx.shouldKeep = true\n  },\n}))\n",[544,2856,2857,2873,2885,2902,2946,2950],{"__ignoreMap":628},[632,2858,2859,2861,2863,2865,2867,2869,2871],{"class":634,"line":635},[632,2860,920],{"class":731},[632,2862,923],{"class":727},[632,2864,926],{"class":830},[632,2866,834],{"class":731},[632,2868,787],{"class":830},[632,2870,834],{"class":731},[632,2872,837],{"class":727},[632,2874,2875,2877,2879,2881,2883],{"class":634,"line":750},[632,2876,2552],{"class":843},[632,2878,847],{"class":727},[632,2880,2479],{"class":830},[632,2882,1791],{"class":731},[632,2884,2058],{"class":727},[632,2886,2887,2890,2892,2894,2896,2898,2900],{"class":634,"line":771},[632,2888,2889],{"class":830},"  keep",[632,2891,847],{"class":727},[632,2893,962],{"class":727},[632,2895,2572],{"class":965},[632,2897,969],{"class":727},[632,2899,972],{"class":885},[632,2901,975],{"class":727},[632,2903,2904,2907,2909,2911,2913,2916,2919,2922,2924,2926,2929,2932,2934,2936,2938,2941,2943],{"class":634,"line":792},[632,2905,2906],{"class":723},"    if",[632,2908,962],{"class":843},[632,2910,2572],{"class":731},[632,2912,923],{"class":727},[632,2914,2915],{"class":731},"duration",[632,2917,2918],{"class":727}," &&",[632,2920,2921],{"class":731}," ctx",[632,2923,923],{"class":727},[632,2925,2915],{"class":731},[632,2927,2928],{"class":727}," >",[632,2930,2931],{"class":1098}," 2000",[632,2933,1430],{"class":843},[632,2935,2572],{"class":731},[632,2937,923],{"class":727},[632,2939,2940],{"class":731},"shouldKeep",[632,2942,1189],{"class":727},[632,2944,2945],{"class":1048}," true\n",[632,2947,2948],{"class":634,"line":820},[632,2949,2624],{"class":727},[632,2951,2952,2954],{"class":634,"line":827},[632,2953,871],{"class":727},[632,2955,2631],{"class":731},[610,2957,2959],{"id":2958},"route-filtering","Route Filtering",[540,2961,2962,2963,2966,2967,2970],{},"Control which routes are logged with ",[544,2964,2965],{},"include"," and ",[544,2968,2969],{},"exclude"," patterns:",[622,2972,2974],{"className":713,"code":2973,"filename":715,"language":716,"meta":628,"style":628},"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",[544,2975,2976,2992,3014,3042,3051,3078,3104,3108],{"__ignoreMap":628},[632,2977,2978,2980,2982,2984,2986,2988,2990],{"class":634,"line":635},[632,2979,920],{"class":731},[632,2981,923],{"class":727},[632,2983,926],{"class":830},[632,2985,834],{"class":731},[632,2987,787],{"class":830},[632,2989,834],{"class":731},[632,2991,837],{"class":727},[632,2993,2994,2997,2999,3002,3004,3007,3009,3012],{"class":634,"line":750},[632,2995,2996],{"class":843},"  include",[632,2998,847],{"class":727},[632,3000,3001],{"class":731}," [",[632,3003,862],{"class":727},[632,3005,3006],{"class":641},"\u002Fapi\u002F**",[632,3008,862],{"class":727},[632,3010,3011],{"class":731},"]",[632,3013,2058],{"class":727},[632,3015,3016,3019,3021,3023,3025,3028,3030,3032,3034,3036,3038,3040],{"class":634,"line":771},[632,3017,3018],{"class":843},"  exclude",[632,3020,847],{"class":727},[632,3022,3001],{"class":731},[632,3024,862],{"class":727},[632,3026,3027],{"class":641},"\u002F_internal\u002F**",[632,3029,862],{"class":727},[632,3031,801],{"class":727},[632,3033,741],{"class":727},[632,3035,955],{"class":641},[632,3037,862],{"class":727},[632,3039,3011],{"class":731},[632,3041,2058],{"class":727},[632,3043,3044,3047,3049],{"class":634,"line":792},[632,3045,3046],{"class":843},"  routes",[632,3048,847],{"class":727},[632,3050,975],{"class":727},[632,3052,3053,3056,3059,3061,3063,3065,3067,3069,3071,3074,3076],{"class":634,"line":820},[632,3054,3055],{"class":727},"    '",[632,3057,3058],{"class":843},"\u002Fapi\u002Fauth\u002F**",[632,3060,862],{"class":727},[632,3062,847],{"class":727},[632,3064,728],{"class":727},[632,3066,852],{"class":843},[632,3068,847],{"class":727},[632,3070,741],{"class":727},[632,3072,3073],{"class":641},"auth-service",[632,3075,862],{"class":727},[632,3077,865],{"class":727},[632,3079,3080,3082,3085,3087,3089,3091,3093,3095,3097,3100,3102],{"class":634,"line":827},[632,3081,3055],{"class":727},[632,3083,3084],{"class":843},"\u002Fapi\u002Fpayment\u002F**",[632,3086,862],{"class":727},[632,3088,847],{"class":727},[632,3090,728],{"class":727},[632,3092,852],{"class":843},[632,3094,847],{"class":727},[632,3096,741],{"class":727},[632,3098,3099],{"class":641},"payment-service",[632,3101,862],{"class":727},[632,3103,865],{"class":727},[632,3105,3106],{"class":634,"line":840},[632,3107,2624],{"class":727},[632,3109,3110,3112],{"class":634,"line":868},[632,3111,871],{"class":727},[632,3113,2631],{"class":731},[610,3115,3117],{"id":3116},"client-side-logging","Client-Side Logging",[540,3119,1881,3120,3123],{},[544,3121,3122],{},"evlog\u002Fhttp"," to send structured logs from any frontend to your Hono server. This works with any client framework (React, Vue, Svelte, vanilla JS).",[614,3125,3127],{"id":3126},"browser-setup","Browser setup",[622,3129,3132],{"className":713,"code":3130,"filename":3131,"language":716,"meta":628,"style":628},"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 })\n","client.ts",[544,3133,3134,3156,3175,3179,3193,3215,3221,3235,3239],{"__ignoreMap":628},[632,3135,3136,3138,3140,3142,3144,3146,3148,3150,3152,3154],{"class":634,"line":635},[632,3137,724],{"class":723},[632,3139,728],{"class":727},[632,3141,778],{"class":731},[632,3143,801],{"class":727},[632,3145,1186],{"class":731},[632,3147,735],{"class":727},[632,3149,738],{"class":723},[632,3151,741],{"class":727},[632,3153,787],{"class":641},[632,3155,747],{"class":727},[632,3157,3158,3160,3162,3165,3167,3169,3171,3173],{"class":634,"line":750},[632,3159,724],{"class":723},[632,3161,728],{"class":727},[632,3163,3164],{"class":731}," createHttpLogDrain",[632,3166,735],{"class":727},[632,3168,738],{"class":723},[632,3170,741],{"class":727},[632,3172,3122],{"class":641},[632,3174,747],{"class":727},[632,3176,3177],{"class":634,"line":771},[632,3178,824],{"emptyLinePlaceholder":823},[632,3180,3181,3183,3185,3187,3189,3191],{"class":634,"line":792},[632,3182,886],{"class":885},[632,3184,2792],{"class":731},[632,3186,892],{"class":727},[632,3188,3164],{"class":830},[632,3190,834],{"class":731},[632,3192,837],{"class":727},[632,3194,3195,3197,3199,3201,3204,3206,3208,3211,3213],{"class":634,"line":820},[632,3196,2552],{"class":843},[632,3198,847],{"class":727},[632,3200,728],{"class":727},[632,3202,3203],{"class":843}," endpoint",[632,3205,847],{"class":727},[632,3207,741],{"class":727},[632,3209,3210],{"class":641},"\u002Fv1\u002Fingest",[632,3212,862],{"class":727},[632,3214,865],{"class":727},[632,3216,3217,3219],{"class":634,"line":827},[632,3218,871],{"class":727},[632,3220,874],{"class":731},[632,3222,3223,3225,3227,3229,3231,3233],{"class":634,"line":840},[632,3224,831],{"class":830},[632,3226,834],{"class":731},[632,3228,1006],{"class":727},[632,3230,2792],{"class":731},[632,3232,871],{"class":727},[632,3234,874],{"class":731},[632,3236,3237],{"class":634,"line":868},[632,3238,824],{"emptyLinePlaceholder":823},[632,3240,3241,3243,3245,3247,3249,3251,3254,3256,3258,3261,3263,3265,3268,3270,3273,3275,3278,3280],{"class":634,"line":877},[632,3242,992],{"class":731},[632,3244,923],{"class":727},[632,3246,1107],{"class":830},[632,3248,834],{"class":731},[632,3250,1006],{"class":727},[632,3252,3253],{"class":843}," 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