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LogTape","\u002Fcompare\u002Flogtape","9.compare\u002F3.logtape",{"title":605,"path":606,"stem":607,"icon":577},"evlog vs Winston: formats and request events","\u002Fcompare\u002Fwinston","9.compare\u002F4.winston",{"title":609,"path":610,"stem":611,"icon":577},"evlog vs Consola: reporters and request context","\u002Fcompare\u002Fconsola","9.compare\u002F5.consola",{"id":613,"title":614,"body":615,"description":1333,"extension":1334,"links":1335,"meta":1340,"navigation":1341,"path":375,"seo":1342,"stem":376,"__hash__":1343},"docs\u002F5.use-cases\u002F3.better-auth\u002F03.middleware.md","createAuthMiddleware",{"type":616,"value":617,"toc":1327},"minimark",[618,629,784,798,802,813,916,920,923,1008,1011,1066,1088,1092,1098,1273,1285,1306,1310,1323],[619,620,621,624,625,628],"p",{},[622,623,614],"code",{}," wraps ",[622,626,627],{},"identifyUser"," with the things you need on every request: route filtering, session resolution timing, lifecycle hooks, and silent error handling. Call it once at startup, then use the returned function in your framework's middleware\u002Fhook system.",[630,631,637],"pre",{"className":632,"code":633,"filename":634,"language":635,"meta":636,"style":636},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { createAuthMiddleware } from 'evlog\u002Fbetter-auth'\n\nconst identify = createAuthMiddleware(auth, {\n  exclude: ['\u002Fapi\u002Fauth\u002F**', '\u002Fapi\u002Fpublic\u002F**'],\n  include: ['\u002Fapi\u002F**'],\n  maskEmail: true,\n})\n","server\u002Fmiddleware\u002Fauth-identify.ts","typescript","",[622,638,639,672,679,704,740,761,775],{"__ignoreMap":636},[640,641,644,648,652,656,659,662,665,669],"span",{"class":642,"line":643},"line",1,[640,645,647],{"class":646},"s7zQu","import",[640,649,651],{"class":650},"sMK4o"," {",[640,653,655],{"class":654},"sTEyZ"," createAuthMiddleware",[640,657,658],{"class":650}," }",[640,660,661],{"class":646}," from",[640,663,664],{"class":650}," '",[640,666,668],{"class":667},"sfazB","evlog\u002Fbetter-auth",[640,670,671],{"class":650},"'\n",[640,673,675],{"class":642,"line":674},2,[640,676,678],{"emptyLinePlaceholder":677},true,"\n",[640,680,682,686,689,692,695,698,701],{"class":642,"line":681},3,[640,683,685],{"class":684},"spNyl","const",[640,687,688],{"class":654}," identify ",[640,690,691],{"class":650},"=",[640,693,655],{"class":694},"s2Zo4",[640,696,697],{"class":654},"(auth",[640,699,700],{"class":650},",",[640,702,703],{"class":650}," {\n",[640,705,707,711,714,717,720,723,725,727,729,732,734,737],{"class":642,"line":706},4,[640,708,710],{"class":709},"swJcz","  exclude",[640,712,713],{"class":650},":",[640,715,716],{"class":654}," [",[640,718,719],{"class":650},"'",[640,721,722],{"class":667},"\u002Fapi\u002Fauth\u002F**",[640,724,719],{"class":650},[640,726,700],{"class":650},[640,728,664],{"class":650},[640,730,731],{"class":667},"\u002Fapi\u002Fpublic\u002F**",[640,733,719],{"class":650},[640,735,736],{"class":654},"]",[640,738,739],{"class":650},",\n",[640,741,743,746,748,750,752,755,757,759],{"class":642,"line":742},5,[640,744,745],{"class":709},"  include",[640,747,713],{"class":650},[640,749,716],{"class":654},[640,751,719],{"class":650},[640,753,754],{"class":667},"\u002Fapi\u002F**",[640,756,719],{"class":650},[640,758,736],{"class":654},[640,760,739],{"class":650},[640,762,764,767,769,773],{"class":642,"line":763},6,[640,765,766],{"class":709},"  maskEmail",[640,768,713],{"class":650},[640,770,772],{"class":771},"sfNiH"," true",[640,774,739],{"class":650},[640,776,778,781],{"class":642,"line":777},7,[640,779,780],{"class":650},"}",[640,782,783],{"class":654},")\n",[619,785,786,787,790,791,793,794,797],{},"The function signature is ",[622,788,789],{},"(log, headers, path?) => Promise\u003Cboolean>",". It resolves the session, calls ",[622,792,627],{},", captures timing into ",[622,795,796],{},"auth.resolvedIn",", fires lifecycle hooks, and silently catches errors so session resolution never breaks a request.",[799,800,346],"h2",{"id":801},"options",[619,803,804,805,812],{},"Inherits all ",[806,807,809,811],"a",{"href":808},"\u002Fuse-cases\u002Fbetter-auth\u002Fidentify-user#options",[622,810,627],{}," options",", plus:",[814,815,816,835],"table",{},[817,818,819],"thead",{},[820,821,822,826,829,832],"tr",{},[823,824,825],"th",{},"Option",[823,827,828],{},"Type",[823,830,831],{},"Default",[823,833,834],{},"Description",[836,837,838,859,878,897],"tbody",{},[820,839,840,846,851,856],{},[841,842,843],"td",{},[622,844,845],{},"exclude",[841,847,848],{},[622,849,850],{},"string[]",[841,852,853],{},[622,854,855],{},"['\u002Fapi\u002Fauth\u002F**']",[841,857,858],{},"Route patterns to skip (glob).",[820,860,861,866,870,875],{},[841,862,863],{},[622,864,865],{},"include",[841,867,868],{},[622,869,850],{},[841,871,872],{},[622,873,874],{},"undefined",[841,876,877],{},"If set, only matching routes are resolved.",[820,879,880,885,890,894],{},[841,881,882],{},[622,883,884],{},"onIdentify",[841,886,887],{},[622,888,889],{},"(log, session) => void",[841,891,892],{},[622,893,874],{},[841,895,896],{},"Called after successful identification.",[820,898,899,904,909,913],{},[841,900,901],{},[622,902,903],{},"onAnonymous",[841,905,906],{},[622,907,908],{},"(log) => void",[841,910,911],{},[622,912,874],{},[841,914,915],{},"Called when no session is found.",[799,917,919],{"id":918},"skip-the-routes-that-do-not-need-a-session","Skip the routes that do not need a session",[619,921,922],{},"Skip Better Auth's own routes and any public endpoints to avoid wasted database queries:",[630,924,926],{"className":632,"code":925,"language":635,"meta":636,"style":636},"const identify = createAuthMiddleware(auth, {\n  exclude: [\n    '\u002Fapi\u002Fauth\u002F**',     \u002F\u002F Better Auth itself\n    '\u002Fapi\u002Fpublic\u002F**',   \u002F\u002F Public endpoints\n    '\u002Fapi\u002Fhealth',      \u002F\u002F Health checks\n  ],\n})\n",[622,927,928,944,953,968,981,995,1002],{"__ignoreMap":636},[640,929,930,932,934,936,938,940,942],{"class":642,"line":643},[640,931,685],{"class":684},[640,933,688],{"class":654},[640,935,691],{"class":650},[640,937,655],{"class":694},[640,939,697],{"class":654},[640,941,700],{"class":650},[640,943,703],{"class":650},[640,945,946,948,950],{"class":642,"line":674},[640,947,710],{"class":709},[640,949,713],{"class":650},[640,951,952],{"class":654}," [\n",[640,954,955,958,960,962,964],{"class":642,"line":681},[640,956,957],{"class":650},"    '",[640,959,722],{"class":667},[640,961,719],{"class":650},[640,963,700],{"class":650},[640,965,967],{"class":966},"sHwdD","     \u002F\u002F Better Auth itself\n",[640,969,970,972,974,976,978],{"class":642,"line":706},[640,971,957],{"class":650},[640,973,731],{"class":667},[640,975,719],{"class":650},[640,977,700],{"class":650},[640,979,980],{"class":966},"   \u002F\u002F Public endpoints\n",[640,982,983,985,988,990,992],{"class":642,"line":742},[640,984,957],{"class":650},[640,986,987],{"class":667},"\u002Fapi\u002Fhealth",[640,989,719],{"class":650},[640,991,700],{"class":650},[640,993,994],{"class":966},"      \u002F\u002F Health checks\n",[640,996,997,1000],{"class":642,"line":763},[640,998,999],{"class":654},"  ]",[640,1001,739],{"class":650},[640,1003,1004,1006],{"class":642,"line":777},[640,1005,780],{"class":650},[640,1007,783],{"class":654},[619,1009,1010],{},"For high-traffic apps, flip the model and only resolve sessions on routes that need them:",[630,1012,1014],{"className":632,"code":1013,"language":635,"meta":636,"style":636},"const identify = createAuthMiddleware(auth, {\n  include: ['\u002Fapi\u002Fdashboard\u002F**', '\u002Fapi\u002Faccount\u002F**'],\n})\n",[622,1015,1016,1032,1060],{"__ignoreMap":636},[640,1017,1018,1020,1022,1024,1026,1028,1030],{"class":642,"line":643},[640,1019,685],{"class":684},[640,1021,688],{"class":654},[640,1023,691],{"class":650},[640,1025,655],{"class":694},[640,1027,697],{"class":654},[640,1029,700],{"class":650},[640,1031,703],{"class":650},[640,1033,1034,1036,1038,1040,1042,1045,1047,1049,1051,1054,1056,1058],{"class":642,"line":674},[640,1035,745],{"class":709},[640,1037,713],{"class":650},[640,1039,716],{"class":654},[640,1041,719],{"class":650},[640,1043,1044],{"class":667},"\u002Fapi\u002Fdashboard\u002F**",[640,1046,719],{"class":650},[640,1048,700],{"class":650},[640,1050,664],{"class":650},[640,1052,1053],{"class":667},"\u002Fapi\u002Faccount\u002F**",[640,1055,719],{"class":650},[640,1057,736],{"class":654},[640,1059,739],{"class":650},[640,1061,1062,1064],{"class":642,"line":681},[640,1063,780],{"class":650},[640,1065,783],{"class":654},[619,1067,1068,1070,1071,1073,1074,1077,1078,1081,1082,1084,1085,1087],{},[622,1069,865],{}," and ",[622,1072,845],{}," use glob patterns (",[622,1075,1076],{},"*",", ",[622,1079,1080],{},"**","). Provide both if you need granular control, and ",[622,1083,845],{}," wins over ",[622,1086,865],{},".",[799,1089,1091],{"id":1090},"react-to-identification","React to identification",[619,1093,1094,1095,1097],{},"Use ",[622,1096,884],{}," to react to user identification, for example to force-keep logs for premium users via tail sampling:",[630,1099,1101],{"className":632,"code":1100,"filename":634,"language":635,"meta":636,"style":636},"const identify = createAuthMiddleware(auth, {\n  onIdentify: (log, session) => {\n    if (session.user.plan === 'enterprise') {\n      log.set({ _forceKeep: true })\n    }\n  },\n  onAnonymous: (log) => {\n    log.set({ anonymous: true })\n  },\n})\n",[622,1102,1103,1119,1146,1182,1209,1214,1219,1236,1261,1266],{"__ignoreMap":636},[640,1104,1105,1107,1109,1111,1113,1115,1117],{"class":642,"line":643},[640,1106,685],{"class":684},[640,1108,688],{"class":654},[640,1110,691],{"class":650},[640,1112,655],{"class":694},[640,1114,697],{"class":654},[640,1116,700],{"class":650},[640,1118,703],{"class":650},[640,1120,1121,1124,1126,1129,1133,1135,1138,1141,1144],{"class":642,"line":674},[640,1122,1123],{"class":694},"  onIdentify",[640,1125,713],{"class":650},[640,1127,1128],{"class":650}," (",[640,1130,1132],{"class":1131},"sHdIc","log",[640,1134,700],{"class":650},[640,1136,1137],{"class":1131}," session",[640,1139,1140],{"class":650},")",[640,1142,1143],{"class":684}," =>",[640,1145,703],{"class":650},[640,1147,1148,1151,1153,1156,1158,1161,1163,1166,1169,1171,1174,1176,1179],{"class":642,"line":681},[640,1149,1150],{"class":646},"    if",[640,1152,1128],{"class":709},[640,1154,1155],{"class":654},"session",[640,1157,1087],{"class":650},[640,1159,1160],{"class":654},"user",[640,1162,1087],{"class":650},[640,1164,1165],{"class":654},"plan",[640,1167,1168],{"class":650}," ===",[640,1170,664],{"class":650},[640,1172,1173],{"class":667},"enterprise",[640,1175,719],{"class":650},[640,1177,1178],{"class":709},") ",[640,1180,1181],{"class":650},"{\n",[640,1183,1184,1187,1189,1192,1195,1198,1201,1203,1205,1207],{"class":642,"line":706},[640,1185,1186],{"class":654},"      log",[640,1188,1087],{"class":650},[640,1190,1191],{"class":694},"set",[640,1193,1194],{"class":709},"(",[640,1196,1197],{"class":650},"{",[640,1199,1200],{"class":709}," _forceKeep",[640,1202,713],{"class":650},[640,1204,772],{"class":771},[640,1206,658],{"class":650},[640,1208,783],{"class":709},[640,1210,1211],{"class":642,"line":742},[640,1212,1213],{"class":650},"    }\n",[640,1215,1216],{"class":642,"line":763},[640,1217,1218],{"class":650},"  },\n",[640,1220,1221,1224,1226,1228,1230,1232,1234],{"class":642,"line":777},[640,1222,1223],{"class":694},"  onAnonymous",[640,1225,713],{"class":650},[640,1227,1128],{"class":650},[640,1229,1132],{"class":1131},[640,1231,1140],{"class":650},[640,1233,1143],{"class":684},[640,1235,703],{"class":650},[640,1237,1239,1242,1244,1246,1248,1250,1253,1255,1257,1259],{"class":642,"line":1238},8,[640,1240,1241],{"class":654},"    log",[640,1243,1087],{"class":650},[640,1245,1191],{"class":694},[640,1247,1194],{"class":709},[640,1249,1197],{"class":650},[640,1251,1252],{"class":709}," anonymous",[640,1254,713],{"class":650},[640,1256,772],{"class":771},[640,1258,658],{"class":650},[640,1260,783],{"class":709},[640,1262,1264],{"class":642,"line":1263},9,[640,1265,1218],{"class":650},[640,1267,1269,1271],{"class":642,"line":1268},10,[640,1270,780],{"class":650},[640,1272,783],{"class":654},[619,1274,1275,1276,1278,1279,1281,1282,1284],{},"Hooks fire after the session is resolved and ",[622,1277,627],{}," has set its fields. They run on every request that passes the ",[622,1280,865],{},"\u002F",[622,1283,845],{}," filter, so keep them fast and side-effect-free.",[1286,1287,1288,1293],"tip",{},[619,1289,1290,1291,713],{},"Common patterns for ",[622,1292,884],{},[1294,1295,1296,1300,1303],"ul",{},[1297,1298,1299],"li",{},"Force-keep audit logs for admins or high-value plans.",[1297,1301,1302],{},"Tag the request with feature flags or tenant info loaded from the session.",[1297,1304,1305],{},"Increment a per-user counter for billing.",[799,1307,1309],{"id":1308},"what-happens-when-auth-fails","What happens when auth fails",[619,1311,1312,1313,1316,1317,1070,1319,1322],{},"The middleware catches every error from ",[622,1314,1315],{},"getSession"," and logs nothing, so your request keeps flowing whether the auth backend is up or down. The wide event still includes ",[622,1318,796],{},[622,1320,1321],{},"auth.identified: false"," so you can alert on session resolution health from your dashboards.",[1324,1325,1326],"style",{},"html pre.shiki code .s7zQu, html code.shiki .s7zQu{--shiki-light:#39ADB5;--shiki-light-font-style:italic;--shiki-default:#89DDFF;--shiki-default-font-style:italic;--shiki-dark:#89DDFF;--shiki-dark-font-style:italic}html pre.shiki code .sMK4o, html code.shiki .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sTEyZ, html code.shiki .sTEyZ{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html pre.shiki code .spNyl, html code.shiki .spNyl{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .s2Zo4, html code.shiki .s2Zo4{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .sfNiH, html code.shiki .sfNiH{--shiki-light:#FF5370;--shiki-default:#FF9CAC;--shiki-dark:#FF9CAC}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .sHwdD, html code.shiki .sHwdD{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#546E7A;--shiki-default-font-style:italic;--shiki-dark:#676E95;--shiki-dark-font-style:italic}html pre.shiki code .sHdIc, html code.shiki .sHdIc{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#EEFFFF;--shiki-default-font-style:italic;--shiki-dark:#BABED8;--shiki-dark-font-style:italic}",{"title":636,"searchDepth":674,"depth":674,"links":1328},[1329,1330,1331,1332],{"id":801,"depth":674,"text":346},{"id":918,"depth":674,"text":919},{"id":1090,"depth":674,"text":1091},{"id":1308,"depth":674,"text":1309},"Framework-agnostic factory with route filtering, session timing, and lifecycle hooks. Call it once at startup and reuse across requests.","md",[1336,1339],{"label":369,"icon":372,"to":370,"color":1337,"variant":1338},"neutral","subtle",{"label":383,"icon":112,"to":384,"color":1337,"variant":1338},{},{"title":374,"icon":377},{"title":614,"description":1333},"W5iPJDKIMXykmBxrqRGnyCbSUGNKZLZjNw0Sw3TEzU0",[1345,1347],{"title":369,"path":370,"stem":371,"description":1346,"icon":372,"children":-1},"The core building block — extract safe user fields, mask emails, and capture plugin data (organizations, roles, 2FA) from a Better Auth session.",{"title":379,"path":380,"stem":381,"description":1348,"icon":330,"children":-1},"Mirror the server-side user identity into client-side logs by watching the Better Auth session and calling setIdentity.",1789294026998]