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= useLogger(event)\n\nlog.set({ user: { id: 1, plan: 'pro' } })\nlog.set({ cart: { id: 42, items: 3, total: 9999 } })\nlog.set({ payment: { method: 'card', status: 'success' } })\n","server\u002Fapi\u002Fcheckout.post.ts",[509,743,744,768,774,791,795,844,896],{"__ignoreMap":507},[512,745,746,750,752,755,757,760,762,765],{"class":514,"line":515},[512,747,749],{"class":748},"s7zQu","import",[512,751,566],{"class":522},[512,753,754],{"class":518}," useLogger",[512,756,624],{"class":522},[512,758,759],{"class":748}," from",[512,761,616],{"class":522},[512,763,764],{"class":536},"evlog",[512,766,767],{"class":522},"'\n",[512,769,770],{"class":514,"line":545},[512,771,773],{"emptyLinePlaceholder":772},true,"\n",[512,775,776,780,783,786,788],{"class":514,"line":589},[512,777,779],{"class":778},"spNyl","const",[512,781,782],{"class":518}," log ",[512,784,785],{"class":522},"=",[512,787,754],{"class":526},[512,789,790],{"class":518},"(event)\n",[512,792,793],{"class":514,"line":629},[512,794,773],{"emptyLinePlaceholder":772},[512,796,797,800,802,805,807,810,812,814,816,819,821,824,826,829,831,833,836,838,840,842],{"class":514,"line":649},[512,798,799],{"class":518},"log",[512,801,523],{"class":522},[512,803,804],{"class":526},"set",[512,806,530],{"class":518},[512,808,809],{"class":522},"{",[512,811,576],{"class":569},[512,813,573],{"class":522},[512,815,566],{"class":522},[512,817,818],{"class":569}," id",[512,820,573],{"class":522},[512,822,823],{"class":696}," 1",[512,825,563],{"class":522},[512,827,828],{"class":569}," plan",[512,830,573],{"class":522},[512,832,616],{"class":522},[512,834,835],{"class":536},"pro",[512,837,533],{"class":522},[512,839,624],{"class":522},[512,841,624],{"class":522},[512,843,542],{"class":518},[512,845,846,848,850,852,854,856,859,861,863,865,867,870,872,875,877,880,882,885,887,890,892,894],{"class":514,"line":669},[512,847,799],{"class":518},[512,849,523],{"class":522},[512,851,804],{"class":526},[512,853,530],{"class":518},[512,855,809],{"class":522},[512,857,858],{"class":569}," cart",[512,860,573],{"class":522},[512,862,566],{"class":522},[512,864,818],{"class":569},[512,866,573],{"class":522},[512,868,869],{"class":696}," 42",[512,871,563],{"class":522},[512,873,874],{"class":569}," items",[512,876,573],{"class":522},[512,878,879],{"class":696}," 3",[512,881,563],{"class":522},[512,883,884],{"class":569}," total",[512,886,573],{"class":522},[512,888,889],{"class":696}," 9999",[512,891,624],{"class":522},[512,893,624],{"class":522},[512,895,542],{"class":518},[512,897,899,901,903,905,907,909,912,914,916,919,921,923,926,928,930,933,935,937,940,942,944,946],{"class":514,"line":898},7,[512,900,799],{"class":518},[512,902,523],{"class":522},[512,904,804],{"class":526},[512,906,530],{"class":518},[512,908,809],{"class":522},[512,910,911],{"class":569}," payment",[512,913,573],{"class":522},[512,915,566],{"class":522},[512,917,918],{"class":569}," method",[512,920,573],{"class":522},[512,922,616],{"class":522},[512,924,925],{"class":536},"card",[512,927,533],{"class":522},[512,929,563],{"class":522},[512,931,932],{"class":569}," status",[512,934,573],{"class":522},[512,936,616],{"class":522},[512,938,939],{"class":536},"success",[512,941,533],{"class":522},[512,943,624],{"class":522},[512,945,624],{"class":522},[512,947,542],{"class":518},[501,949,952],{"className":503,"code":950,"filename":951,"language":506,"meta":507,"style":507},"import { createLogger } from 'evlog'\n\nconst log = createLogger({ jobId: 'sync-001', queue: 'emails' })\n\nlog.set({ source: 'postgres', target: 's3' })\nlog.set({ records: { found: 1250, synced: 1250 } })\nlog.emit()\n","scripts\u002Fsync-data.ts",[509,953,954,973,977,1021,1025,1065,1107],{"__ignoreMap":507},[512,955,956,958,960,963,965,967,969,971],{"class":514,"line":515},[512,957,749],{"class":748},[512,959,566],{"class":522},[512,961,962],{"class":518}," createLogger",[512,964,624],{"class":522},[512,966,759],{"class":748},[512,968,616],{"class":522},[512,970,764],{"class":536},[512,972,767],{"class":522},[512,974,975],{"class":514,"line":545},[512,976,773],{"emptyLinePlaceholder":772},[512,978,979,981,983,985,987,989,991,994,996,998,1001,1003,1005,1008,1010,1012,1015,1017,1019],{"class":514,"line":589},[512,980,779],{"class":778},[512,982,782],{"class":518},[512,984,785],{"class":522},[512,986,962],{"class":526},[512,988,530],{"class":518},[512,990,809],{"class":522},[512,992,993],{"class":569}," jobId",[512,995,573],{"class":522},[512,997,616],{"class":522},[512,999,1000],{"class":536},"sync-001",[512,1002,533],{"class":522},[512,1004,563],{"class":522},[512,1006,1007],{"class":569}," queue",[512,1009,573],{"class":522},[512,1011,616],{"class":522},[512,1013,1014],{"class":536},"emails",[512,1016,533],{"class":522},[512,1018,624],{"class":522},[512,1020,542],{"class":518},[512,1022,1023],{"class":514,"line":629},[512,1024,773],{"emptyLinePlaceholder":772},[512,1026,1027,1029,1031,1033,1035,1037,1039,1041,1043,1045,1047,1049,1052,1054,1056,1059,1061,1063],{"class":514,"line":649},[512,1028,799],{"class":518},[512,1030,523],{"class":522},[512,1032,804],{"class":526},[512,1034,530],{"class":518},[512,1036,809],{"class":522},[512,1038,611],{"class":569},[512,1040,573],{"class":522},[512,1042,616],{"class":522},[512,1044,619],{"class":536},[512,1046,533],{"class":522},[512,1048,563],{"class":522},[512,1050,1051],{"class":569}," target",[512,1053,573],{"class":522},[512,1055,616],{"class":522},[512,1057,1058],{"class":536},"s3",[512,1060,533],{"class":522},[512,1062,624],{"class":522},[512,1064,542],{"class":518},[512,1066,1067,1069,1071,1073,1075,1077,1080,1082,1084,1087,1089,1092,1094,1097,1099,1101,1103,1105],{"class":514,"line":669},[512,1068,799],{"class":518},[512,1070,523],{"class":522},[512,1072,804],{"class":526},[512,1074,530],{"class":518},[512,1076,809],{"class":522},[512,1078,1079],{"class":569}," records",[512,1081,573],{"class":522},[512,1083,566],{"class":522},[512,1085,1086],{"class":569}," found",[512,1088,573],{"class":522},[512,1090,1091],{"class":696}," 1250",[512,1093,563],{"class":522},[512,1095,1096],{"class":569}," synced",[512,1098,573],{"class":522},[512,1100,1091],{"class":696},[512,1102,624],{"class":522},[512,1104,624],{"class":522},[512,1106,542],{"class":518},[512,1108,1109,1111,1113,1116],{"class":514,"line":898},[512,1110,799],{"class":518},[512,1112,523],{"class":522},[512,1114,1115],{"class":526},"emit",[512,1117,1118],{"class":518},"()\n",[501,1120,1125],{"className":1121,"code":1122,"filename":1123,"language":1124,"meta":507,"style":507},"language-bash shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","[INFO] POST \u002Fapi\u002Fcheckout (234ms)\n  user: { id: 1, plan: 'pro' }\n  cart: { id: 42, items: 3, total: 9999 }\n  payment: { method: 'card', status: 'success' }\n  status: 200\n","Output","bash",[509,1126,1127,1147,1172,1197,1226],{"__ignoreMap":507},[512,1128,1129,1132,1135,1138,1141,1145],{"class":514,"line":515},[512,1130,1131],{"class":522},"[",[512,1133,1134],{"class":518},"INFO",[512,1136,1137],{"class":522},"]",[512,1139,1140],{"class":518}," POST \u002Fapi\u002Fcheckout (",[512,1142,1144],{"class":1143},"sBMFI","234ms",[512,1146,542],{"class":518},[512,1148,1149,1152,1154,1157,1160,1163,1165,1167,1169],{"class":514,"line":545},[512,1150,1151],{"class":1143},"  user:",[512,1153,566],{"class":536},[512,1155,1156],{"class":536}," id:",[512,1158,1159],{"class":536}," 1,",[512,1161,1162],{"class":536}," plan:",[512,1164,616],{"class":522},[512,1166,835],{"class":536},[512,1168,533],{"class":522},[512,1170,1171],{"class":536}," }\n",[512,1173,1174,1177,1179,1181,1184,1187,1190,1193,1195],{"class":514,"line":589},[512,1175,1176],{"class":1143},"  cart:",[512,1178,566],{"class":536},[512,1180,1156],{"class":536},[512,1182,1183],{"class":536}," 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Everything you need to understand what happened.",[490,1238,1240],{"id":1239},"creating-wide-events","Creating Wide Events",[1242,1243,1245,1248],"h3",{"id":1244},"createlogger-general-purpose",[509,1246,1247],{},"createLogger"," (General Purpose)",[427,1250,1251,1252,1255],{},"Use ",[509,1253,1254],{},"createLogger()"," for scripts, background jobs, queue workers, cron jobs, or any operation where you manage the lifecycle:",[501,1257,1260],{"className":503,"code":1258,"filename":1259,"language":506,"meta":507,"style":507},"import { initLogger, createLogger } from 'evlog'\n\ninitLogger({ env: { service: 'migrate' } })\n\nconst log = createLogger({ task: 'user-migration' })\n\nconst users = await db.query('SELECT * FROM legacy_users')\nlog.set({ found: users.length })\n\nlet migrated = 0\nfor (const user of users) {\n  await newDb.upsert({ id: user.id, email: user.email, plan: user.plan })\n  migrated++\n}\n\nlog.set({ migrated, status: 'complete' })\nlog.emit()\n","scripts\u002Fmigrate-users.ts",[509,1261,1262,1285,1289,1323,1327,1357,1361,1392,1421,1426,1440,1463,1523,1532,1538,1543,1576],{"__ignoreMap":507},[512,1263,1264,1266,1268,1271,1273,1275,1277,1279,1281,1283],{"class":514,"line":515},[512,1265,749],{"class":748},[512,1267,566],{"class":522},[512,1269,1270],{"class":518}," initLogger",[512,1272,563],{"class":522},[512,1274,962],{"class":518},[512,1276,624],{"class":522},[512,1278,759],{"class":748},[512,1280,616],{"class":522},[512,1282,764],{"class":536},[512,1284,767],{"class":522},[512,1286,1287],{"class":514,"line":545},[512,1288,773],{"emptyLinePlaceholder":772},[512,1290,1291,1294,1296,1298,1301,1303,1305,1308,1310,1312,1315,1317,1319,1321],{"class":514,"line":589},[512,1292,1293],{"class":526},"initLogger",[512,1295,530],{"class":518},[512,1297,809],{"class":522},[512,1299,1300],{"class":569}," env",[512,1302,573],{"class":522},[512,1304,566],{"class":522},[512,1306,1307],{"class":569}," 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email",[512,1498,573],{"class":522},[512,1500,576],{"class":518},[512,1502,523],{"class":522},[512,1504,1505],{"class":518},"email",[512,1507,563],{"class":522},[512,1509,828],{"class":569},[512,1511,573],{"class":522},[512,1513,576],{"class":518},[512,1515,523],{"class":522},[512,1517,1518],{"class":518},"plan",[512,1520,624],{"class":522},[512,1522,542],{"class":569},[512,1524,1526,1529],{"class":514,"line":1525},13,[512,1527,1528],{"class":518},"  migrated",[512,1530,1531],{"class":522},"++\n",[512,1533,1535],{"class":514,"line":1534},14,[512,1536,1537],{"class":522},"}\n",[512,1539,1541],{"class":514,"line":1540},15,[512,1542,773],{"emptyLinePlaceholder":772},[512,1544,1546,1548,1550,1552,1554,1556,1559,1561,1563,1565,1567,1570,1572,1574],{"class":514,"line":1545},16,[512,1547,799],{"class":518},[512,1549,523],{"class":522},[512,1551,804],{"class":526},[512,1553,530],{"class":518},[512,1555,809],{"class":522},[512,1557,1558],{"class":518}," migrated",[512,1560,563],{"class":522},[512,1562,932],{"class":569},[512,1564,573],{"class":522},[512,1566,616],{"class":522},[512,1568,1569],{"class":536},"complete",[512,1571,533],{"class":522},[512,1573,624],{"class":522},[512,1575,542],{"class":518},[512,1577,1579,1581,1583,1585],{"class":514,"line":1578},17,[512,1580,799],{"class":518},[512,1582,523],{"class":522},[512,1584,1115],{"class":526},[512,1586,1118],{"class":518},[1242,1588,1590,1593],{"id":1589},"createrequestlogger-http-contexts",[509,1591,1592],{},"createRequestLogger"," (HTTP Contexts)",[427,1595,1251,1596,1599,1600,1602,1603,1606,1607,1610,1611,573],{},[509,1597,1598],{},"createRequestLogger()"," when working with HTTP requests outside of a framework integration. It's a thin wrapper around ",[509,1601,1247],{}," that pre-populates ",[509,1604,1605],{},"method",", ",[509,1608,1609],{},"path",", and ",[509,1612,1613],{},"requestId",[501,1615,1618],{"className":503,"code":1616,"filename":1617,"language":506,"meta":507,"style":507},"import { initLogger, createRequestLogger } from 'evlog'\n\ninitLogger({ env: { service: 'my-worker' } })\n\nconst log = createRequestLogger({ method: 'POST', path: '\u002Fapi\u002Fcheckout' })\n\nlog.set({ user: { id: 1, plan: 'pro' } })\nlog.set({ cart: { items: 3, total: 9999 } })\n\nlog.emit()\n","src\u002Fworker.ts",[509,1619,1620,1643,1647,1678,1682,1725,1729,1771,1809,1813],{"__ignoreMap":507},[512,1621,1622,1624,1626,1628,1630,1633,1635,1637,1639,1641],{"class":514,"line":515},[512,1623,749],{"class":748},[512,1625,566],{"class":522},[512,1627,1270],{"class":518},[512,1629,563],{"class":522},[512,1631,1632],{"class":518}," createRequestLogger",[512,1634,624],{"class":522},[512,1636,759],{"class":748},[512,1638,616],{"class":522},[512,1640,764],{"class":536},[512,1642,767],{"class":522},[512,1644,1645],{"class":514,"line":545},[512,1646,773],{"emptyLinePlaceholder":772},[512,1648,1649,1651,1653,1655,1657,1659,1661,1663,1665,1667,1670,1672,1674,1676],{"class":514,"line":589},[512,1650,1293],{"class":526},[512,1652,530],{"class":518},[512,1654,809],{"class":522},[512,1656,1300],{"class":569},[512,1658,573],{"class":522},[512,1660,566],{"class":522},[512,1662,1307],{"class":569},[512,1664,573],{"class":522},[512,1666,616],{"class":522},[512,1668,1669],{"class":536},"my-worker",[512,1671,533],{"class":522},[512,1673,624],{"class":522},[512,1675,624],{"class":522},[512,1677,542],{"class":518},[512,1679,1680],{"class":514,"line":629},[512,1681,773],{"emptyLinePlaceholder":772},[512,1683,1684,1686,1688,1690,1692,1694,1696,1698,1700,1702,1705,1707,1709,1712,1714,1716,1719,1721,1723],{"class":514,"line":649},[512,1685,779],{"class":778},[512,1687,782],{"class":518},[512,1689,785],{"class":522},[512,1691,1632],{"class":526},[512,1693,530],{"class":518},[512,1695,809],{"class":522},[512,1697,918],{"class":569},[512,1699,573],{"class":522},[512,1701,616],{"class":522},[512,1703,1704],{"class":536},"POST",[512,1706,533],{"class":522},[512,1708,563],{"class":522},[512,1710,1711],{"class":569}," path",[512,1713,573],{"class":522},[512,1715,616],{"class":522},[512,1717,1718],{"class":536},"\u002Fapi\u002Fcheckout",[512,1720,533],{"class":522},[512,1722,624],{"class":522},[512,1724,542],{"class":518},[512,1726,1727],{"class":514,"line":669},[512,1728,773],{"emptyLinePlaceholder":772},[512,1730,1731,1733,1735,1737,1739,1741,1743,1745,1747,1749,1751,1753,1755,1757,1759,1761,1763,1765,1767,1769],{"class":514,"line":898},[512,1732,799],{"class":518},[512,1734,523],{"class":522},[512,1736,804],{"class":526},[512,1738,530],{"class":518},[512,1740,809],{"class":522},[512,1742,576],{"class":569},[512,1744,573],{"class":522},[512,1746,566],{"class":522},[512,1748,818],{"class":569},[512,1750,573],{"class":522},[512,1752,823],{"class":696},[512,1754,563],{"class":522},[512,1756,828],{"class":569},[512,1758,573],{"class":522},[512,1760,616],{"class":522},[512,1762,835],{"class":536},[512,1764,533],{"class":522},[512,1766,624],{"class":522},[512,1768,624],{"class":522},[512,1770,542],{"class":518},[512,1772,1773,1775,1777,1779,1781,1783,1785,1787,1789,1791,1793,1795,1797,1799,1801,1803,1805,1807],{"class":514,"line":1394},[512,1774,799],{"class":518},[512,1776,523],{"class":522},[512,1778,804],{"class":526},[512,1780,530],{"class":518},[512,1782,809],{"class":522},[512,1784,858],{"class":569},[512,1786,573],{"class":522},[512,1788,566],{"class":522},[512,1790,874],{"class":569},[512,1792,573],{"class":522},[512,1794,879],{"class":696},[512,1796,563],{"class":522},[512,1798,884],{"class":569},[512,1800,573],{"class":522},[512,1802,889],{"class":696},[512,1804,624],{"class":522},[512,1806,624],{"class":522},[512,1808,542],{"class":518},[512,1810,1811],{"class":514,"line":1423},[512,1812,773],{"emptyLinePlaceholder":772},[512,1814,1815,1817,1819,1821],{"class":514,"line":1428},[512,1816,799],{"class":518},[512,1818,523],{"class":522},[512,1820,1115],{"class":526},[512,1822,1118],{"class":518},[431,1824,1825,1826,439,1828,1830,1831,1834],{"color":527,"icon":13},"Both ",[509,1827,1247],{},[509,1829,1592],{}," require a manual ",[509,1832,1833],{},"log.emit()"," call. The event won't be emitted until you call it.",[1242,1836,1838,1841],{"id":1837},"uselogger-retrieving-the-request-logger",[509,1839,1840],{},"useLogger"," (Retrieving the Request Logger)",[427,1843,1844,1845,1848],{},"When using a framework integration (Nuxt, Hono, Express, etc.), the middleware creates a wide event logger automatically on each request. ",[509,1846,1847],{},"useLogger(event)"," retrieves that logger from the request context:",[501,1850,1852],{"className":503,"code":1851,"filename":741,"language":506,"meta":507,"style":507},"import { useLogger } from 'evlog'\n\nexport default defineEventHandler(async (event) => {\n  const log = useLogger(event)\n\n  log.set({ user: { id: 1, plan: 'pro' } })\n  log.set({ cart: { items: 3, total: 9999 } })\n\n  return { success: true }\n  \u002F\u002F auto-emitted on response end\n})\n",[509,1853,1854,1872,1876,1907,1926,1930,1973,2011,2015,2033,2039],{"__ignoreMap":507},[512,1855,1856,1858,1860,1862,1864,1866,1868,1870],{"class":514,"line":515},[512,1857,749],{"class":748},[512,1859,566],{"class":522},[512,1861,754],{"class":518},[512,1863,624],{"class":522},[512,1865,759],{"class":748},[512,1867,616],{"class":522},[512,1869,764],{"class":536},[512,1871,767],{"class":522},[512,1873,1874],{"class":514,"line":545},[512,1875,773],{"emptyLinePlaceholder":772},[512,1877,1878,1881,1884,1887,1889,1892,1894,1898,1901,1904],{"class":514,"line":589},[512,1879,1880],{"class":748},"export",[512,1882,1883],{"class":748}," default",[512,1885,1886],{"class":526}," defineEventHandler",[512,1888,530],{"class":518},[512,1890,1891],{"class":778},"async",[512,1893,1448],{"class":522},[512,1895,1897],{"class":1896},"sHdIc","event",[512,1899,1900],{"class":522},")",[512,1902,1903],{"class":778}," =>",[512,1905,1906],{"class":522}," {\n",[512,1908,1909,1912,1915,1918,1920,1922,1924],{"class":514,"line":629},[512,1910,1911],{"class":778},"  const",[512,1913,1914],{"class":518}," log",[512,1916,1917],{"class":522}," =",[512,1919,754],{"class":526},[512,1921,530],{"class":569},[512,1923,1897],{"class":518},[512,1925,542],{"class":569},[512,1927,1928],{"class":514,"line":649},[512,1929,773],{"emptyLinePlaceholder":772},[512,1931,1932,1935,1937,1939,1941,1943,1945,1947,1949,1951,1953,1955,1957,1959,1961,1963,1965,1967,1969,1971],{"class":514,"line":669},[512,1933,1934],{"class":518},"  log",[512,1936,523],{"class":522},[512,1938,804],{"class":526},[512,1940,530],{"class":569},[512,1942,809],{"class":522},[512,1944,576],{"class":569},[512,1946,573],{"class":522},[512,1948,566],{"class":522},[512,1950,818],{"class":569},[512,1952,573],{"class":522},[512,1954,823],{"class":696},[512,1956,563],{"class":522},[512,1958,828],{"class":569},[512,1960,573],{"class":522},[512,1962,616],{"class":522},[512,1964,835],{"class":536},[512,1966,533],{"class":522},[512,1968,624],{"class":522},[512,1970,624],{"class":522},[512,1972,542],{"class":569},[512,1974,1975,1977,1979,1981,1983,1985,1987,1989,1991,1993,1995,1997,1999,2001,2003,2005,2007,2009],{"class":514,"line":898},[512,1976,1934],{"class":518},[512,1978,523],{"class":522},[512,1980,804],{"class":526},[512,1982,530],{"class":569},[512,1984,809],{"class":522},[512,1986,858],{"class":569},[512,1988,573],{"class":522},[512,1990,566],{"class":522},[512,1992,874],{"class":569},[512,1994,573],{"class":522},[512,1996,879],{"class":696},[512,1998,563],{"class":522},[512,2000,884],{"class":569},[512,2002,573],{"class":522},[512,2004,889],{"class":696},[512,2006,624],{"class":522},[512,2008,624],{"class":522},[512,2010,542],{"class":569},[512,2012,2013],{"class":514,"line":1394},[512,2014,773],{"emptyLinePlaceholder":772},[512,2016,2017,2020,2022,2025,2027,2031],{"class":514,"line":1423},[512,2018,2019],{"class":748},"  return",[512,2021,566],{"class":522},[512,2023,2024],{"class":569}," success",[512,2026,573],{"class":522},[512,2028,2030],{"class":2029},"sfNiH"," true",[512,2032,1171],{"class":522},[512,2034,2035],{"class":514,"line":1428},[512,2036,2038],{"class":2037},"sHwdD","  \u002F\u002F auto-emitted on response end\n",[512,2040,2041,2043],{"class":514,"line":1442},[512,2042,584],{"class":522},[512,2044,542],{"class":518},[431,2046,2047,2049,2050,2052],{"color":527,"icon":13},[509,2048,1840],{}," doesn't create a logger, it retrieves the one the framework middleware already attached to the event. The middleware handles creation and emission automatically. In Nuxt, ",[509,2051,1840],{}," is auto-imported.",[490,2054,2056],{"id":2055},"after-emit-sealing-and-background-work","After emit: sealing and background work",[427,2058,2059,2060,2063,2064,2066,2067,2070,2071,1606,2073,1606,2076,1610,2078,2081,2082,2085,2086,2092,2093,2096,2097,2100,2101,2104],{},"When the wide event is ",[710,2061,2062],{},"emitted"," (automatically at the end of the request, or when you call ",[509,2065,1833],{}," yourself), that logger instance is ",[710,2068,2069],{},"sealed",". Further ",[509,2072,804],{},[509,2074,2075],{},"error",[509,2077,527],{},[509,2079,2080],{},"warn"," calls do ",[710,2083,2084],{},"not"," update the event that was already sent to your drains. They are ignored and evlog prints a ",[710,2087,2088,2091],{},[509,2089,2090],{},"[evlog]"," warning"," to the console with the keys that were dropped. This also applies when ",[710,2094,2095],{},"head sampling"," discards the event (",[509,2098,2099],{},"emit()"," returned ",[509,2102,2103],{},"null","): the logger is still sealed for that unit of work.",[427,2106,2107,2108,2111,2112,2115,2116,2119,2120,2123],{},"This matters for ",[710,2109,2110],{},"async work that outlives the handler"," (fire-and-forget promises, ",[509,2113,2114],{},"setTimeout",", tasks started but not awaited). On many runtimes, ",[509,2117,2118],{},"AsyncLocalStorage"," keeps returning the same request logger, so ",[509,2121,2122],{},"useLogger()"," still succeeds even though the HTTP response — and the wide event — are already finished. Without warnings, that looks like silent data loss.",[1242,2125,2127],{"id":2126},"logforklabel-fn",[509,2128,2129],{},"log.fork(label, fn)",[427,2131,2132,2133,2136,2137,2141,2142,2145,2146,1606,2149,2151,2152,2155,2156,2158],{},"For intentional background work that should produce ",[710,2134,2135],{},"its own"," wide event, use ",[710,2138,2139],{},[509,2140,2129],{}," when your integration provides it (Express, Fastify, NestJS, SvelteKit, React Router, Next.js ",[509,2143,2144],{},"withEvlog",", Elysia). Inside ",[509,2147,2148],{},"fn",[509,2150,2122],{}," resolves to a ",[710,2153,2154],{},"child"," logger. When ",[509,2157,2148],{}," completes (or throws), the child emits an event with:",[452,2160,2161,2173],{},[455,2162,2163,2168,2169,2172],{},[710,2164,2165],{},[509,2166,2167],{},"operation",": the ",[509,2170,2171],{},"label"," you passed",[455,2174,2175,2180,2181,2183],{},[710,2176,2177],{},[509,2178,2179],{},"_parentRequestId",": the parent request’s ",[509,2182,1613],{}," (for correlation in queries and dashboards)",[427,2185,2186,2187,2190],{},"The parent wide event may be emitted ",[710,2188,2189],{},"before"," the child event; they are two separate events ordered by time.",[427,2192,2193,2196,2197,2199,2200,2203,2204,2206],{},[710,2194,2195],{},"Not available yet:"," Hono (no ",[509,2198,1840],{}," without ",[509,2201,2202],{},"c.get('log')"," + ALS) and Nitro\u002FNuxt ",[509,2205,1847],{}," — use the post-emit warnings to catch mistakes; a different API may arrive later for event-scoped forks.",[501,2208,2211],{"className":503,"code":2209,"filename":2210,"language":506,"meta":507,"style":507},"import { evlog, useLogger } from 'evlog\u002Fexpress'\n\n\u002F\u002F Inside a route after evlog middleware:\nconst log = req.log\nlog.set({ order_dispatched: true })\n\nlog.fork?.('process_order', async () => {\n  const child = useLogger()\n  child.set({ inventory_checked: true })\n})\n","server\u002Froutes\u002Fcheckout.post.ts",[509,2212,2213,2237,2241,2246,2262,2285,2289,2322,2335,2359],{"__ignoreMap":507},[512,2214,2215,2217,2219,2222,2224,2226,2228,2230,2232,2235],{"class":514,"line":515},[512,2216,749],{"class":748},[512,2218,566],{"class":522},[512,2220,2221],{"class":518}," evlog",[512,2223,563],{"class":522},[512,2225,754],{"class":518},[512,2227,624],{"class":522},[512,2229,759],{"class":748},[512,2231,616],{"class":522},[512,2233,2234],{"class":536},"evlog\u002Fexpress",[512,2236,767],{"class":522},[512,2238,2239],{"class":514,"line":545},[512,2240,773],{"emptyLinePlaceholder":772},[512,2242,2243],{"class":514,"line":589},[512,2244,2245],{"class":2037},"\u002F\u002F Inside a route after evlog middleware:\n",[512,2247,2248,2250,2252,2254,2257,2259],{"class":514,"line":629},[512,2249,779],{"class":778},[512,2251,782],{"class":518},[512,2253,785],{"class":522},[512,2255,2256],{"class":518}," req",[512,2258,523],{"class":522},[512,2260,2261],{"class":518},"log\n",[512,2263,2264,2266,2268,2270,2272,2274,2277,2279,2281,2283],{"class":514,"line":649},[512,2265,799],{"class":518},[512,2267,523],{"class":522},[512,2269,804],{"class":526},[512,2271,530],{"class":518},[512,2273,809],{"class":522},[512,2275,2276],{"class":569}," order_dispatched",[512,2278,573],{"class":522},[512,2280,2030],{"class":2029},[512,2282,624],{"class":522},[512,2284,542],{"class":518},[512,2286,2287],{"class":514,"line":669},[512,2288,773],{"emptyLinePlaceholder":772},[512,2290,2291,2293,2295,2298,2301,2303,2305,2308,2310,2312,2315,2318,2320],{"class":514,"line":898},[512,2292,799],{"class":518},[512,2294,523],{"class":522},[512,2296,2297],{"class":526},"fork",[512,2299,2300],{"class":522},"?.",[512,2302,530],{"class":518},[512,2304,533],{"class":522},[512,2306,2307],{"class":536},"process_order",[512,2309,533],{"class":522},[512,2311,563],{"class":522},[512,2313,2314],{"class":778}," async",[512,2316,2317],{"class":522}," ()",[512,2319,1903],{"class":778},[512,2321,1906],{"class":522},[512,2323,2324,2326,2329,2331,2333],{"class":514,"line":1394},[512,2325,1911],{"class":778},[512,2327,2328],{"class":518}," child",[512,2330,1917],{"class":522},[512,2332,754],{"class":526},[512,2334,1118],{"class":569},[512,2336,2337,2340,2342,2344,2346,2348,2351,2353,2355,2357],{"class":514,"line":1423},[512,2338,2339],{"class":518},"  child",[512,2341,523],{"class":522},[512,2343,804],{"class":526},[512,2345,530],{"class":569},[512,2347,809],{"class":522},[512,2349,2350],{"class":569}," inventory_checked",[512,2352,573],{"class":522},[512,2354,2030],{"class":2029},[512,2356,624],{"class":522},[512,2358,542],{"class":569},[512,2360,2361,2363],{"class":514,"line":1428},[512,2362,584],{"class":522},[512,2364,542],{"class":518},[490,2366,2368],{"id":2367},"anatomy-of-a-wide-event","Anatomy of a Wide Event",[427,2370,2371,2372,2374,2375,1606,2377,2379,2380,523],{},"A well-designed wide event contains context from multiple layers. The examples below show what to add inside your handler or script. They assume ",[509,2373,799],{}," is already created via ",[509,2376,1247],{},[509,2378,1592],{},", or ",[509,2381,1840],{},[1242,2383,2385],{"id":2384},"operation-context","Operation Context",[427,2387,2388],{},"Basic information about the operation:",[736,2390,2391,2495],{},[501,2392,2394],{"className":503,"code":2393,"filename":741,"language":506,"meta":507,"style":507},"import { useLogger } from 'evlog'\n\nconst log = useLogger(event)\nlog.set({\n  method: 'POST',\n  path: '\u002Fapi\u002Fcheckout',\n  requestId: 'abc-123-def',\n})\n",[509,2395,2396,2414,2418,2430,2442,2458,2473,2489],{"__ignoreMap":507},[512,2397,2398,2400,2402,2404,2406,2408,2410,2412],{"class":514,"line":515},[512,2399,749],{"class":748},[512,2401,566],{"class":522},[512,2403,754],{"class":518},[512,2405,624],{"class":522},[512,2407,759],{"class":748},[512,2409,616],{"class":522},[512,2411,764],{"class":536},[512,2413,767],{"class":522},[512,2415,2416],{"class":514,"line":545},[512,2417,773],{"emptyLinePlaceholder":772},[512,2419,2420,2422,2424,2426,2428],{"class":514,"line":589},[512,2421,779],{"class":778},[512,2423,782],{"class":518},[512,2425,785],{"class":522},[512,2427,754],{"class":526},[512,2429,790],{"class":518},[512,2431,2432,2434,2436,2438,2440],{"class":514,"line":629},[512,2433,799],{"class":518},[512,2435,523],{"class":522},[512,2437,804],{"class":526},[512,2439,530],{"class":518},[512,2441,1462],{"class":522},[512,2443,2444,2447,2449,2451,2453,2455],{"class":514,"line":649},[512,2445,2446],{"class":569},"  method",[512,2448,573],{"class":522},[512,2450,616],{"class":522},[512,2452,1704],{"class":536},[512,2454,533],{"class":522},[512,2456,2457],{"class":522},",\n",[512,2459,2460,2463,2465,2467,2469,2471],{"class":514,"line":669},[512,2461,2462],{"class":569},"  path",[512,2464,573],{"class":522},[512,2466,616],{"class":522},[512,2468,1718],{"class":536},[512,2470,533],{"class":522},[512,2472,2457],{"class":522},[512,2474,2475,2478,2480,2482,2485,2487],{"class":514,"line":898},[512,2476,2477],{"class":569},"  requestId",[512,2479,573],{"class":522},[512,2481,616],{"class":522},[512,2483,2484],{"class":536},"abc-123-def",[512,2486,533],{"class":522},[512,2488,2457],{"class":522},[512,2490,2491,2493],{"class":514,"line":1394},[512,2492,584],{"class":522},[512,2494,542],{"class":518},[501,2496,2498],{"className":503,"code":2497,"filename":951,"language":506,"meta":507,"style":507},"import { createLogger } from 'evlog'\n\nconst log = createLogger({\n  jobId: 'sync-001',\n  queue: 'emails',\n  source: 'postgres',\n})\n",[509,2499,2500,2518,2522,2536,2551,2566,2581],{"__ignoreMap":507},[512,2501,2502,2504,2506,2508,2510,2512,2514,2516],{"class":514,"line":515},[512,2503,749],{"class":748},[512,2505,566],{"class":522},[512,2507,962],{"class":518},[512,2509,624],{"class":522},[512,2511,759],{"class":748},[512,2513,616],{"class":522},[512,2515,764],{"class":536},[512,2517,767],{"class":522},[512,2519,2520],{"class":514,"line":545},[512,2521,773],{"emptyLinePlaceholder":772},[512,2523,2524,2526,2528,2530,2532,2534],{"class":514,"line":589},[512,2525,779],{"class":778},[512,2527,782],{"class":518},[512,2529,785],{"class":522},[512,2531,962],{"class":526},[512,2533,530],{"class":518},[512,2535,1462],{"class":522},[512,2537,2538,2541,2543,2545,2547,2549],{"class":514,"line":629},[512,2539,2540],{"class":569},"  jobId",[512,2542,573],{"class":522},[512,2544,616],{"class":522},[512,2546,1000],{"class":536},[512,2548,533],{"class":522},[512,2550,2457],{"class":522},[512,2552,2553,2556,2558,2560,2562,2564],{"class":514,"line":649},[512,2554,2555],{"class":569},"  queue",[512,2557,573],{"class":522},[512,2559,616],{"class":522},[512,2561,1014],{"class":536},[512,2563,533],{"class":522},[512,2565,2457],{"class":522},[512,2567,2568,2571,2573,2575,2577,2579],{"class":514,"line":669},[512,2569,2570],{"class":569},"  source",[512,2572,573],{"class":522},[512,2574,616],{"class":522},[512,2576,619],{"class":536},[512,2578,533],{"class":522},[512,2580,2457],{"class":522},[512,2582,2583,2585],{"class":514,"line":898},[512,2584,584],{"class":522},[512,2586,542],{"class":518},[431,2588,2589,2590,1606,2592,1606,2594,2596],{"color":527,"icon":13},"In framework integrations, request context (",[509,2591,1605],{},[509,2593,1609],{},[509,2595,1613],{},") is auto-populated by the middleware. You don't need to set these fields manually.",[1242,2598,2600],{"id":2599},"user-actor-context","User \u002F Actor Context",[427,2602,2603],{},"Who triggered the operation:",[501,2605,2607],{"className":503,"code":2606,"filename":741,"language":506,"meta":507,"style":507},"log.set({\n  userId: user.id,\n  email: user.email,\n  subscription: user.plan,\n  accountAge: daysSince(user.createdAt),\n})\n",[509,2608,2609,2621,2636,2651,2666,2686],{"__ignoreMap":507},[512,2610,2611,2613,2615,2617,2619],{"class":514,"line":515},[512,2612,799],{"class":518},[512,2614,523],{"class":522},[512,2616,804],{"class":526},[512,2618,530],{"class":518},[512,2620,1462],{"class":522},[512,2622,2623,2626,2628,2630,2632,2634],{"class":514,"line":545},[512,2624,2625],{"class":569},"  userId",[512,2627,573],{"class":522},[512,2629,576],{"class":518},[512,2631,523],{"class":522},[512,2633,1491],{"class":518},[512,2635,2457],{"class":522},[512,2637,2638,2641,2643,2645,2647,2649],{"class":514,"line":589},[512,2639,2640],{"class":569},"  email",[512,2642,573],{"class":522},[512,2644,576],{"class":518},[512,2646,523],{"class":522},[512,2648,1505],{"class":518},[512,2650,2457],{"class":522},[512,2652,2653,2656,2658,2660,2662,2664],{"class":514,"line":629},[512,2654,2655],{"class":569},"  subscription",[512,2657,573],{"class":522},[512,2659,576],{"class":518},[512,2661,523],{"class":522},[512,2663,1518],{"class":518},[512,2665,2457],{"class":522},[512,2667,2668,2671,2673,2676,2679,2681,2684],{"class":514,"line":649},[512,2669,2670],{"class":569},"  accountAge",[512,2672,573],{"class":522},[512,2674,2675],{"class":526}," daysSince",[512,2677,2678],{"class":518},"(user",[512,2680,523],{"class":522},[512,2682,2683],{"class":518},"createdAt)",[512,2685,2457],{"class":522},[512,2687,2688,2690],{"class":514,"line":669},[512,2689,584],{"class":522},[512,2691,542],{"class":518},[1242,2693,2695],{"id":2694},"business-context","Business Context",[427,2697,2698],{},"Domain-specific data relevant to the operation:",[501,2700,2702],{"className":503,"code":2701,"filename":741,"language":506,"meta":507,"style":507},"log.set({\n  cart: {\n    id: cart.id,\n    items: cart.items.length,\n    total: cart.total,\n    currency: 'USD',\n  },\n  shipping: {\n    method: 'express',\n    country: address.country,\n  },\n  coupon: appliedCoupon?.code,\n})\n",[509,2703,2704,2716,2725,2740,2761,2777,2793,2798,2807,2823,2840,2844,2860],{"__ignoreMap":507},[512,2705,2706,2708,2710,2712,2714],{"class":514,"line":515},[512,2707,799],{"class":518},[512,2709,523],{"class":522},[512,2711,804],{"class":526},[512,2713,530],{"class":518},[512,2715,1462],{"class":522},[512,2717,2718,2721,2723],{"class":514,"line":545},[512,2719,2720],{"class":569},"  cart",[512,2722,573],{"class":522},[512,2724,1906],{"class":522},[512,2726,2727,2730,2732,2734,2736,2738],{"class":514,"line":589},[512,2728,2729],{"class":569},"    id",[512,2731,573],{"class":522},[512,2733,858],{"class":518},[512,2735,523],{"class":522},[512,2737,1491],{"class":518},[512,2739,2457],{"class":522},[512,2741,2742,2745,2747,2749,2751,2754,2756,2759],{"class":514,"line":629},[512,2743,2744],{"class":569},"    items",[512,2746,573],{"class":522},[512,2748,858],{"class":518},[512,2750,523],{"class":522},[512,2752,2753],{"class":518},"items",[512,2755,523],{"class":522},[512,2757,2758],{"class":518},"length",[512,2760,2457],{"class":522},[512,2762,2763,2766,2768,2770,2772,2775],{"class":514,"line":649},[512,2764,2765],{"class":569},"    total",[512,2767,573],{"class":522},[512,2769,858],{"class":518},[512,2771,523],{"class":522},[512,2773,2774],{"class":518},"total",[512,2776,2457],{"class":522},[512,2778,2779,2782,2784,2786,2789,2791],{"class":514,"line":669},[512,2780,2781],{"class":569},"    currency",[512,2783,573],{"class":522},[512,2785,616],{"class":522},[512,2787,2788],{"class":536},"USD",[512,2790,533],{"class":522},[512,2792,2457],{"class":522},[512,2794,2795],{"class":514,"line":898},[512,2796,2797],{"class":522},"  },\n",[512,2799,2800,2803,2805],{"class":514,"line":1394},[512,2801,2802],{"class":569},"  shipping",[512,2804,573],{"class":522},[512,2806,1906],{"class":522},[512,2808,2809,2812,2814,2816,2819,2821],{"class":514,"line":1423},[512,2810,2811],{"class":569},"    method",[512,2813,573],{"class":522},[512,2815,616],{"class":522},[512,2817,2818],{"class":536},"express",[512,2820,533],{"class":522},[512,2822,2457],{"class":522},[512,2824,2825,2828,2830,2833,2835,2838],{"class":514,"line":1428},[512,2826,2827],{"class":569},"    country",[512,2829,573],{"class":522},[512,2831,2832],{"class":518}," address",[512,2834,523],{"class":522},[512,2836,2837],{"class":518},"country",[512,2839,2457],{"class":522},[512,2841,2842],{"class":514,"line":1442},[512,2843,2797],{"class":522},[512,2845,2846,2849,2851,2854,2856,2858],{"class":514,"line":1465},[512,2847,2848],{"class":569},"  coupon",[512,2850,573],{"class":522},[512,2852,2853],{"class":518}," appliedCoupon",[512,2855,2300],{"class":522},[512,2857,509],{"class":518},[512,2859,2457],{"class":522},[512,2861,2862,2864],{"class":514,"line":1525},[512,2863,584],{"class":522},[512,2865,542],{"class":518},[1242,2867,2869],{"id":2868},"outcome","Outcome",[427,2871,2872],{},"The result of the operation:",[736,2874,2875,2948],{},[501,2876,2879],{"className":503,"code":2877,"filename":2878,"language":506,"meta":507,"style":507},"log.set({\n  status: 200,\n  duration: Date.now() - startTime,\n  success: true,\n})\n","Success",[509,2880,2881,2893,2905,2931,2942],{"__ignoreMap":507},[512,2882,2883,2885,2887,2889,2891],{"class":514,"line":515},[512,2884,799],{"class":518},[512,2886,523],{"class":522},[512,2888,804],{"class":526},[512,2890,530],{"class":518},[512,2892,1462],{"class":522},[512,2894,2895,2898,2900,2903],{"class":514,"line":545},[512,2896,2897],{"class":569},"  status",[512,2899,573],{"class":522},[512,2901,2902],{"class":696}," 200",[512,2904,2457],{"class":522},[512,2906,2907,2910,2912,2915,2917,2920,2923,2926,2929],{"class":514,"line":589},[512,2908,2909],{"class":569},"  duration",[512,2911,573],{"class":522},[512,2913,2914],{"class":518}," Date",[512,2916,523],{"class":522},[512,2918,2919],{"class":526},"now",[512,2921,2922],{"class":518},"() ",[512,2924,2925],{"class":522},"-",[512,2927,2928],{"class":518}," startTime",[512,2930,2457],{"class":522},[512,2932,2933,2936,2938,2940],{"class":514,"line":629},[512,2934,2935],{"class":569},"  success",[512,2937,573],{"class":522},[512,2939,2030],{"class":2029},[512,2941,2457],{"class":522},[512,2943,2944,2946],{"class":514,"line":649},[512,2945,584],{"class":522},[512,2947,542],{"class":518},[501,2949,2952],{"className":503,"code":2950,"filename":2951,"language":506,"meta":507,"style":507},"log.set({\n  status: 500,\n  error: {\n    message: err.message,\n    code: err.code,\n    type: err.constructor.name,\n  },\n})\n","Error",[509,2953,2954,2966,2977,2986,3003,3018,3039,3043],{"__ignoreMap":507},[512,2955,2956,2958,2960,2962,2964],{"class":514,"line":515},[512,2957,799],{"class":518},[512,2959,523],{"class":522},[512,2961,804],{"class":526},[512,2963,530],{"class":518},[512,2965,1462],{"class":522},[512,2967,2968,2970,2972,2975],{"class":514,"line":545},[512,2969,2897],{"class":569},[512,2971,573],{"class":522},[512,2973,2974],{"class":696}," 500",[512,2976,2457],{"class":522},[512,2978,2979,2982,2984],{"class":514,"line":589},[512,2980,2981],{"class":569},"  error",[512,2983,573],{"class":522},[512,2985,1906],{"class":522},[512,2987,2988,2991,2993,2996,2998,3001],{"class":514,"line":629},[512,2989,2990],{"class":569},"    message",[512,2992,573],{"class":522},[512,2994,2995],{"class":518}," err",[512,2997,523],{"class":522},[512,2999,3000],{"class":518},"message",[512,3002,2457],{"class":522},[512,3004,3005,3008,3010,3012,3014,3016],{"class":514,"line":649},[512,3006,3007],{"class":569},"    code",[512,3009,573],{"class":522},[512,3011,2995],{"class":518},[512,3013,523],{"class":522},[512,3015,509],{"class":518},[512,3017,2457],{"class":522},[512,3019,3020,3023,3025,3027,3029,3032,3034,3037],{"class":514,"line":669},[512,3021,3022],{"class":569},"    type",[512,3024,573],{"class":522},[512,3026,2995],{"class":518},[512,3028,523],{"class":522},[512,3030,3031],{"class":518},"constructor",[512,3033,523],{"class":522},[512,3035,3036],{"class":518},"name",[512,3038,2457],{"class":522},[512,3040,3041],{"class":514,"line":898},[512,3042,2797],{"class":522},[512,3044,3045,3047],{"class":514,"line":1394},[512,3046,584],{"class":522},[512,3048,542],{"class":518},[490,3050,185],{"id":3051},"best-practices",[1242,3053,3055],{"id":3054},"use-meaningful-keys","Use Meaningful Keys",[501,3057,3060],{"className":503,"code":3058,"filename":3059,"language":506,"meta":507,"style":507},"\u002F\u002F Avoid generic keys\nlog.set({ data: { id: 123 } })\n\n\u002F\u002F Use specific, descriptive keys\nlog.set({ order: { id: 123, status: 'pending' } })\n","server\u002Fapi\u002Forders.post.ts",[509,3061,3062,3067,3099,3103,3108],{"__ignoreMap":507},[512,3063,3064],{"class":514,"line":515},[512,3065,3066],{"class":2037},"\u002F\u002F Avoid generic keys\n",[512,3068,3069,3071,3073,3075,3077,3079,3082,3084,3086,3088,3090,3093,3095,3097],{"class":514,"line":545},[512,3070,799],{"class":518},[512,3072,523],{"class":522},[512,3074,804],{"class":526},[512,3076,530],{"class":518},[512,3078,809],{"class":522},[512,3080,3081],{"class":569}," data",[512,3083,573],{"class":522},[512,3085,566],{"class":522},[512,3087,818],{"class":569},[512,3089,573],{"class":522},[512,3091,3092],{"class":696}," 123",[512,3094,624],{"class":522},[512,3096,624],{"class":522},[512,3098,542],{"class":518},[512,3100,3101],{"class":514,"line":589},[512,3102,773],{"emptyLinePlaceholder":772},[512,3104,3105],{"class":514,"line":629},[512,3106,3107],{"class":2037},"\u002F\u002F Use specific, descriptive keys\n",[512,3109,3110,3112,3114,3116,3118,3120,3123,3125,3127,3129,3131,3133,3135,3137,3139,3141,3144,3146,3148,3150],{"class":514,"line":649},[512,3111,799],{"class":518},[512,3113,523],{"class":522},[512,3115,804],{"class":526},[512,3117,530],{"class":518},[512,3119,809],{"class":522},[512,3121,3122],{"class":569}," order",[512,3124,573],{"class":522},[512,3126,566],{"class":522},[512,3128,818],{"class":569},[512,3130,573],{"class":522},[512,3132,3092],{"class":696},[512,3134,563],{"class":522},[512,3136,932],{"class":569},[512,3138,573],{"class":522},[512,3140,616],{"class":522},[512,3142,3143],{"class":536},"pending",[512,3145,533],{"class":522},[512,3147,624],{"class":522},[512,3149,624],{"class":522},[512,3151,542],{"class":518},[1242,3153,3155],{"id":3154},"group-related-data","Group Related Data",[501,3157,3159],{"className":503,"code":3158,"filename":741,"language":506,"meta":507,"style":507},"\u002F\u002F Flat structure is hard to read\nlog.set({\n  userId: 1,\n  userEmail: 'a@b.com',\n  cartId: 2,\n  cartTotal: 100,\n})\n\n\u002F\u002F Grouped structure is clearer\nlog.set({\n  user: { id: 1, email: 'a@b.com' },\n  cart: { id: 2, total: 100 },\n})\n",[509,3160,3161,3166,3178,3188,3204,3216,3228,3234,3238,3243,3255,3285,3309],{"__ignoreMap":507},[512,3162,3163],{"class":514,"line":515},[512,3164,3165],{"class":2037},"\u002F\u002F Flat structure is hard to read\n",[512,3167,3168,3170,3172,3174,3176],{"class":514,"line":545},[512,3169,799],{"class":518},[512,3171,523],{"class":522},[512,3173,804],{"class":526},[512,3175,530],{"class":518},[512,3177,1462],{"class":522},[512,3179,3180,3182,3184,3186],{"class":514,"line":589},[512,3181,2625],{"class":569},[512,3183,573],{"class":522},[512,3185,823],{"class":696},[512,3187,2457],{"class":522},[512,3189,3190,3193,3195,3197,3200,3202],{"class":514,"line":629},[512,3191,3192],{"class":569},"  userEmail",[512,3194,573],{"class":522},[512,3196,616],{"class":522},[512,3198,3199],{"class":536},"a@b.com",[512,3201,533],{"class":522},[512,3203,2457],{"class":522},[512,3205,3206,3209,3211,3214],{"class":514,"line":649},[512,3207,3208],{"class":569},"  cartId",[512,3210,573],{"class":522},[512,3212,3213],{"class":696}," 2",[512,3215,2457],{"class":522},[512,3217,3218,3221,3223,3226],{"class":514,"line":669},[512,3219,3220],{"class":569},"  cartTotal",[512,3222,573],{"class":522},[512,3224,3225],{"class":696}," 100",[512,3227,2457],{"class":522},[512,3229,3230,3232],{"class":514,"line":898},[512,3231,584],{"class":522},[512,3233,542],{"class":518},[512,3235,3236],{"class":514,"line":1394},[512,3237,773],{"emptyLinePlaceholder":772},[512,3239,3240],{"class":514,"line":1423},[512,3241,3242],{"class":2037},"\u002F\u002F Grouped structure is clearer\n",[512,3244,3245,3247,3249,3251,3253],{"class":514,"line":1428},[512,3246,799],{"class":518},[512,3248,523],{"class":522},[512,3250,804],{"class":526},[512,3252,530],{"class":518},[512,3254,1462],{"class":522},[512,3256,3257,3260,3262,3264,3266,3268,3270,3272,3274,3276,3278,3280,3282],{"class":514,"line":1442},[512,3258,3259],{"class":569},"  user",[512,3261,573],{"class":522},[512,3263,566],{"class":522},[512,3265,818],{"class":569},[512,3267,573],{"class":522},[512,3269,823],{"class":696},[512,3271,563],{"class":522},[512,3273,1496],{"class":569},[512,3275,573],{"class":522},[512,3277,616],{"class":522},[512,3279,3199],{"class":536},[512,3281,533],{"class":522},[512,3283,3284],{"class":522}," },\n",[512,3286,3287,3289,3291,3293,3295,3297,3299,3301,3303,3305,3307],{"class":514,"line":1465},[512,3288,2720],{"class":569},[512,3290,573],{"class":522},[512,3292,566],{"class":522},[512,3294,818],{"class":569},[512,3296,573],{"class":522},[512,3298,3213],{"class":696},[512,3300,563],{"class":522},[512,3302,884],{"class":569},[512,3304,573],{"class":522},[512,3306,3225],{"class":696},[512,3308,3284],{"class":522},[512,3310,3311,3313],{"class":514,"line":1525},[512,3312,584],{"class":522},[512,3314,542],{"class":518},[1242,3316,3318],{"id":3317},"add-context-incrementally","Add Context Incrementally",[427,3320,3321,3322,3325],{},"Call ",[509,3323,3324],{},"log.set()"," as you gather information:",[736,3327,3328,3635],{},[501,3329,3331],{"className":503,"code":3330,"filename":741,"language":506,"meta":507,"style":507},"import { useLogger } from 'evlog'\n\nexport default defineEventHandler(async (event) => {\n  const log = useLogger(event)\n\n  const user = await getUser(event)\n  log.set({ user: { id: user.id, plan: user.plan } })\n\n  const cart = await getCart(user.id)\n  log.set({ cart: { items: cart.items.length, total: cart.total } })\n\n  const payment = await processPayment(cart)\n  log.set({ payment: { method: payment.method, status: payment.status } })\n\n  return { success: true }\n})\n",[509,3332,3333,3351,3355,3377,3393,3397,3416,3462,3466,3490,3540,3544,3564,3611,3615,3629],{"__ignoreMap":507},[512,3334,3335,3337,3339,3341,3343,3345,3347,3349],{"class":514,"line":515},[512,3336,749],{"class":748},[512,3338,566],{"class":522},[512,3340,754],{"class":518},[512,3342,624],{"class":522},[512,3344,759],{"class":748},[512,3346,616],{"class":522},[512,3348,764],{"class":536},[512,3350,767],{"class":522},[512,3352,3353],{"class":514,"line":545},[512,3354,773],{"emptyLinePlaceholder":772},[512,3356,3357,3359,3361,3363,3365,3367,3369,3371,3373,3375],{"class":514,"line":589},[512,3358,1880],{"class":748},[512,3360,1883],{"class":748},[512,3362,1886],{"class":526},[512,3364,530],{"class":518},[512,3366,1891],{"class":778},[512,3368,1448],{"class":522},[512,3370,1897],{"class":1896},[512,3372,1900],{"class":522},[512,3374,1903],{"class":778},[512,3376,1906],{"class":522},[512,3378,3379,3381,3383,3385,3387,3389,3391],{"class":514,"line":629},[512,3380,1911],{"class":778},[512,3382,1914],{"class":518},[512,3384,1917],{"class":522},[512,3386,754],{"class":526},[512,3388,530],{"class":569},[512,3390,1897],{"class":518},[512,3392,542],{"class":569},[512,3394,3395],{"class":514,"line":649},[512,3396,773],{"emptyLinePlaceholder":772},[512,3398,3399,3401,3403,3405,3407,3410,3412,3414],{"class":514,"line":669},[512,3400,1911],{"class":778},[512,3402,576],{"class":518},[512,3404,1917],{"class":522},[512,3406,1372],{"class":748},[512,3408,3409],{"class":526}," getUser",[512,3411,530],{"class":569},[512,3413,1897],{"class":518},[512,3415,542],{"class":569},[512,3417,3418,3420,3422,3424,3426,3428,3430,3432,3434,3436,3438,3440,3442,3444,3446,3448,3450,3452,3454,3456,3458,3460],{"class":514,"line":898},[512,3419,1934],{"class":518},[512,3421,523],{"class":522},[512,3423,804],{"class":526},[512,3425,530],{"class":569},[512,3427,809],{"class":522},[512,3429,576],{"class":569},[512,3431,573],{"class":522},[512,3433,566],{"class":522},[512,3435,818],{"class":569},[512,3437,573],{"class":522},[512,3439,576],{"class":518},[512,3441,523],{"class":522},[512,3443,1491],{"class":518},[512,3445,563],{"class":522},[512,3447,828],{"class":569},[512,3449,573],{"class":522},[512,3451,576],{"class":518},[512,3453,523],{"class":522},[512,3455,1518],{"class":518},[512,3457,624],{"class":522},[512,3459,624],{"class":522},[512,3461,542],{"class":569},[512,3463,3464],{"class":514,"line":1394},[512,3465,773],{"emptyLinePlaceholder":772},[512,3467,3468,3470,3472,3474,3476,3479,3481,3484,3486,3488],{"class":514,"line":1423},[512,3469,1911],{"class":778},[512,3471,858],{"class":518},[512,3473,1917],{"class":522},[512,3475,1372],{"class":748},[512,3477,3478],{"class":526}," getCart",[512,3480,530],{"class":569},[512,3482,3483],{"class":518},"user",[512,3485,523],{"class":522},[512,3487,1491],{"class":518},[512,3489,542],{"class":569},[512,3491,3492,3494,3496,3498,3500,3502,3504,3506,3508,3510,3512,3514,3516,3518,3520,3522,3524,3526,3528,3530,3532,3534,3536,3538],{"class":514,"line":1428},[512,3493,1934],{"class":518},[512,3495,523],{"class":522},[512,3497,804],{"class":526},[512,3499,530],{"class":569},[512,3501,809],{"class":522},[512,3503,858],{"class":569},[512,3505,573],{"class":522},[512,3507,566],{"class":522},[512,3509,874],{"class":569},[512,3511,573],{"class":522},[512,3513,858],{"class":518},[512,3515,523],{"class":522},[512,3517,2753],{"class":518},[512,3519,523],{"class":522},[512,3521,2758],{"class":518},[512,3523,563],{"class":522},[512,3525,884],{"class":569},[512,3527,573],{"class":522},[512,3529,858],{"class":518},[512,3531,523],{"class":522},[512,3533,2774],{"class":518},[512,3535,624],{"class":522},[512,3537,624],{"class":522},[512,3539,542],{"class":569},[512,3541,3542],{"class":514,"line":1442},[512,3543,773],{"emptyLinePlaceholder":772},[512,3545,3546,3548,3550,3552,3554,3557,3559,3562],{"class":514,"line":1465},[512,3547,1911],{"class":778},[512,3549,911],{"class":518},[512,3551,1917],{"class":522},[512,3553,1372],{"class":748},[512,3555,3556],{"class":526}," processPayment",[512,3558,530],{"class":569},[512,3560,3561],{"class":518},"cart",[512,3563,542],{"class":569},[512,3565,3566,3568,3570,3572,3574,3576,3578,3580,3582,3584,3586,3588,3590,3592,3594,3596,3598,3600,3602,3605,3607,3609],{"class":514,"line":1525},[512,3567,1934],{"class":518},[512,3569,523],{"class":522},[512,3571,804],{"class":526},[512,3573,530],{"class":569},[512,3575,809],{"class":522},[512,3577,911],{"class":569},[512,3579,573],{"class":522},[512,3581,566],{"class":522},[512,3583,918],{"class":569},[512,3585,573],{"class":522},[512,3587,911],{"class":518},[512,3589,523],{"class":522},[512,3591,1605],{"class":518},[512,3593,563],{"class":522},[512,3595,932],{"class":569},[512,3597,573],{"class":522},[512,3599,911],{"class":518},[512,3601,523],{"class":522},[512,3603,3604],{"class":518},"status",[512,3606,624],{"class":522},[512,3608,624],{"class":522},[512,3610,542],{"class":569},[512,3612,3613],{"class":514,"line":1534},[512,3614,773],{"emptyLinePlaceholder":772},[512,3616,3617,3619,3621,3623,3625,3627],{"class":514,"line":1540},[512,3618,2019],{"class":748},[512,3620,566],{"class":522},[512,3622,2024],{"class":569},[512,3624,573],{"class":522},[512,3626,2030],{"class":2029},[512,3628,1171],{"class":522},[512,3630,3631,3633],{"class":514,"line":1545},[512,3632,584],{"class":522},[512,3634,542],{"class":518},[501,3636,3638],{"className":1121,"code":3637,"filename":1123,"language":1124,"meta":507,"style":507},"[INFO] POST \u002Fapi\u002Fcheckout (456ms)\n  user: { id: 1, plan: 'pro' }\n  cart: { items: 3, total: 9999 }\n  payment: { method: 'card', status: 'success' }\n  status: 200\n",[509,3639,3640,3655,3675,3691,3717],{"__ignoreMap":507},[512,3641,3642,3644,3646,3648,3650,3653],{"class":514,"line":515},[512,3643,1131],{"class":522},[512,3645,1134],{"class":518},[512,3647,1137],{"class":522},[512,3649,1140],{"class":518},[512,3651,3652],{"class":1143},"456ms",[512,3654,542],{"class":518},[512,3656,3657,3659,3661,3663,3665,3667,3669,3671,3673],{"class":514,"line":545},[512,3658,1151],{"class":1143},[512,3660,566],{"class":536},[512,3662,1156],{"class":536},[512,3664,1159],{"class":536},[512,3666,1162],{"class":536},[512,3668,616],{"class":522},[512,3670,835],{"class":536},[512,3672,533],{"class":522},[512,3674,1171],{"class":536},[512,3676,3677,3679,3681,3683,3685,3687,3689],{"class":514,"line":589},[512,3678,1176],{"class":1143},[512,3680,566],{"class":536},[512,3682,1186],{"class":536},[512,3684,1189],{"class":536},[512,3686,1192],{"class":536},[512,3688,889],{"class":696},[512,3690,1171],{"class":536},[512,3692,3693,3695,3697,3699,3701,3703,3705,3707,3709,3711,3713,3715],{"class":514,"line":629},[512,3694,1201],{"class":1143},[512,3696,566],{"class":536},[512,3698,1206],{"class":536},[512,3700,616],{"class":522},[512,3702,925],{"class":536},[512,3704,533],{"class":522},[512,3706,563],{"class":536},[512,3708,1217],{"class":536},[512,3710,616],{"class":522},[512,3712,939],{"class":536},[512,3714,533],{"class":522},[512,3716,1171],{"class":536},[512,3718,3719,3721],{"class":514,"line":649},[512,3720,1230],{"class":1143},[512,3722,1233],{"class":696},[1242,3724,3726],{"id":3725},"handle-errors-gracefully","Handle Errors Gracefully",[427,3728,3729],{},"When errors occur, the wide event still emits with error context:",[736,3731,3732,3958],{},[501,3733,3735],{"className":503,"code":3734,"filename":741,"language":506,"meta":507,"style":507},"import { useLogger } from 'evlog'\n\nexport default defineEventHandler(async (event) => {\n  const log = useLogger(event)\n\n  try {\n    const result = await processPayment(cart)\n    return result\n  } catch (err) {\n    log.set({\n      error: {\n        message: err.message,\n        code: err.code,\n        type: err.constructor.name,\n      },\n    })\n    throw err\n  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