[{"data":1,"prerenderedAt":2223},["ShallowReactive",2],{"navigation_docs":3,"-integrate-adapters-self-hosted-fs":576,"-integrate-adapters-self-hosted-fs-surround":2218},[4,35,85,138,318,453,512,551],{"title":5,"path":6,"stem":7,"children":8,"page":34},"Start","\u002Fstart","1.start",[9,14,19,24,29],{"title":10,"path":11,"stem":12,"icon":13},"Introduction","\u002Fstart\u002Fintroduction","1.start\u002F1.introduction","i-lucide-info",{"title":15,"path":16,"stem":17,"icon":18},"Why start with evlog","\u002Fstart\u002Fwhy-evlog","1.start\u002F2.why-evlog","i-lucide-rocket",{"title":20,"path":21,"stem":22,"icon":23},"Installation","\u002Fstart\u002Finstallation","1.start\u002F3.installation","i-lucide-download",{"title":25,"path":26,"stem":27,"icon":28},"Quick Start","\u002Fstart\u002Fquick-start","1.start\u002F4.quick-start","i-lucide-zap",{"title":30,"path":31,"stem":32,"icon":33},"Choose your logger","\u002Fstart\u002Ftypescript-logging-library","1.start\u002F5.typescript-logging-library","i-lucide-file-code",false,{"title":36,"path":37,"stem":38,"children":39,"page":34},"Learn","\u002Flearn","2.learn",[40,45,50,55,60,65,70,75,80],{"title":41,"path":42,"stem":43,"icon":44},"Overview","\u002Flearn\u002Foverview","2.learn\u002F0.overview","i-lucide-list",{"title":46,"path":47,"stem":48,"icon":49},"Simple Logging","\u002Flearn\u002Fsimple-logging","2.learn\u002F1.simple-logging","i-lucide-terminal",{"title":51,"path":52,"stem":53,"icon":54},"Wide Events","\u002Flearn\u002Fwide-events","2.learn\u002F2.wide-events","i-lucide-layers",{"title":56,"path":57,"stem":58,"icon":59},"Structured Errors","\u002Flearn\u002Fstructured-errors","2.learn\u002F3.structured-errors","i-lucide-shield-alert",{"title":61,"path":62,"stem":63,"icon":64},"Lifecycle","\u002Flearn\u002Flifecycle","2.learn\u002F4.lifecycle","i-lucide-arrow-right-left",{"title":66,"path":67,"stem":68,"icon":69},"Sampling","\u002Flearn\u002Fsampling","2.learn\u002F5.sampling","i-lucide-filter",{"title":71,"path":72,"stem":73,"icon":74},"Auto-Redaction","\u002Flearn\u002Fredaction","2.learn\u002F6.redaction","i-lucide-eye-off",{"title":76,"path":77,"stem":78,"icon":79},"Typed Fields","\u002Flearn\u002Ftyped-fields","2.learn\u002F7.typed-fields","i-simple-icons-typescript",{"title":81,"path":82,"stem":83,"icon":84},"Catalogs","\u002Flearn\u002Fcatalogs","2.learn\u002F8.catalogs","i-lucide-book-open",{"title":86,"path":87,"stem":88,"children":89,"page":34},"CLI","\u002Fcli","3.cli",[90,93,98,103,108,113,118,123,128,133],{"title":41,"path":91,"stem":92,"icon":49},"\u002Fcli\u002Foverview","3.cli\u002F0.overview",{"title":94,"path":95,"stem":96,"icon":97},"init","\u002Fcli\u002Finit","3.cli\u002F1.init","i-lucide-wand-sparkles",{"title":99,"path":100,"stem":101,"icon":102},"map","\u002Fcli\u002Fmap","3.cli\u002F2.map","i-lucide-radar",{"title":104,"path":105,"stem":106,"icon":107},"Rules","\u002Fcli\u002Frules","3.cli\u002F3.rules","i-lucide-list-checks",{"title":109,"path":110,"stem":111,"icon":112},"Scoring","\u002Fcli\u002Fscoring","3.cli\u002F4.scoring","i-lucide-gauge",{"title":114,"path":115,"stem":116,"icon":117},"CI","\u002Fcli\u002Fci","3.cli\u002F5.ci","i-lucide-git-pull-request",{"title":119,"path":120,"stem":121,"icon":122},"doctor","\u002Fcli\u002Fdoctor","3.cli\u002F6.doctor","i-lucide-stethoscope",{"title":124,"path":125,"stem":126,"icon":127},"telemetry","\u002Fcli\u002Ftelemetry","3.cli\u002F7.telemetry","i-lucide-bar-chart-3",{"title":129,"path":130,"stem":131,"icon":132},"agents","\u002Fcli\u002Fagents","3.cli\u002F8.agents","i-lucide-bot",{"title":134,"path":135,"stem":136,"icon":137},"Observability Score","\u002Fcli\u002Fobservability-score","3.cli\u002F9.observability-score","i-lucide-activity",{"title":139,"path":140,"stem":141,"children":142,"page":34},"Integrate","\u002Fintegrate","4.integrate",[143,147,230],{"title":41,"path":144,"stem":145,"icon":146},"\u002Fintegrate\u002Foverview","4.integrate\u002F0.overview","i-lucide-plug",{"title":148,"path":149,"stem":150,"children":151,"page":34},"Adapters","\u002Fintegrate\u002Fadapters","4.integrate\u002Fadapters",[152,155,185,210],{"title":41,"path":153,"stem":154,"icon":44},"\u002Fintegrate\u002Fadapters\u002Foverview","4.integrate\u002Fadapters\u002F01.overview",{"title":156,"path":157,"stem":158,"children":159,"page":34},"Cloud","\u002Fintegrate\u002Fadapters\u002Fcloud","4.integrate\u002Fadapters\u002Fcloud",[160,165,170,175,180],{"title":161,"path":162,"stem":163,"icon":164},"Axiom","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Faxiom","4.integrate\u002Fadapters\u002Fcloud\u002F01.axiom","i-custom-axiom",{"title":166,"path":167,"stem":168,"icon":169},"PostHog","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fposthog","4.integrate\u002Fadapters\u002Fcloud\u002F02.posthog","i-simple-icons-posthog",{"title":171,"path":172,"stem":173,"icon":174},"Sentry","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fsentry","4.integrate\u002Fadapters\u002Fcloud\u002F03.sentry","i-simple-icons-sentry",{"title":176,"path":177,"stem":178,"icon":179},"Better Stack","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fbetter-stack","4.integrate\u002Fadapters\u002Fcloud\u002F04.better-stack","i-simple-icons-betterstack",{"title":181,"path":182,"stem":183,"icon":184},"Datadog","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fdatadog","4.integrate\u002Fadapters\u002Fcloud\u002F05.datadog","i-simple-icons-datadog",{"title":186,"path":187,"stem":188,"children":189,"page":34},"Cloud or Self-Hosted","\u002Fintegrate\u002Fadapters\u002Fhybrid","4.integrate\u002Fadapters\u002Fhybrid",[190,195,200,205],{"title":191,"path":192,"stem":193,"icon":194},"Grafana Loki","\u002Fintegrate\u002Fadapters\u002Fhybrid\u002Floki","4.integrate\u002Fadapters\u002Fhybrid\u002F01.loki","i-simple-icons-grafana",{"title":196,"path":197,"stem":198,"icon":199},"ClickHouse","\u002Fintegrate\u002Fadapters\u002Fhybrid\u002Fclickhouse","4.integrate\u002Fadapters\u002Fhybrid\u002F02.clickhouse","i-simple-icons-clickhouse",{"title":201,"path":202,"stem":203,"icon":204},"OTLP","\u002Fintegrate\u002Fadapters\u002Fhybrid\u002Fotlp","4.integrate\u002Fadapters\u002Fhybrid\u002F03.otlp","i-simple-icons-opentelemetry",{"title":206,"path":207,"stem":208,"icon":209},"HyperDX","\u002Fintegrate\u002Fadapters\u002Fhybrid\u002Fhyperdx","4.integrate\u002Fadapters\u002Fhybrid\u002F04.hyperdx","i-custom-hyperdx",{"title":211,"path":212,"stem":213,"children":214,"page":34},"Self-Hosted","\u002Fintegrate\u002Fadapters\u002Fself-hosted","4.integrate\u002Fadapters\u002Fself-hosted",[215,220,225],{"title":216,"path":217,"stem":218,"icon":219},"File System","\u002Fintegrate\u002Fadapters\u002Fself-hosted\u002Ffs","4.integrate\u002Fadapters\u002Fself-hosted\u002F01.fs","i-lucide-hard-drive",{"title":221,"path":222,"stem":223,"icon":224},"NuxtHub","\u002Fintegrate\u002Fadapters\u002Fself-hosted\u002Fnuxthub","4.integrate\u002Fadapters\u002Fself-hosted\u002F02.nuxthub","i-simple-icons-nuxt",{"title":226,"path":227,"stem":228,"icon":229},"Memory","\u002Fintegrate\u002Fadapters\u002Fself-hosted\u002Fmemory","4.integrate\u002Fadapters\u002Fself-hosted\u002F03.memory","i-lucide-cpu",{"title":231,"path":232,"stem":233,"children":234,"page":34},"Frameworks","\u002Fintegrate\u002Fframeworks","4.integrate\u002Fframeworks",[235,239,244,249,254,259,264,269,274,279,284,289,294,299,303,308,313],{"title":41,"path":236,"stem":237,"icon":238},"\u002Fintegrate\u002Fframeworks\u002Foverview","4.integrate\u002Fframeworks\u002F00.overview","i-lucide-layout-grid",{"title":240,"path":241,"stem":242,"icon":243},"Nuxt","\u002Fintegrate\u002Fframeworks\u002Fnuxt","4.integrate\u002Fframeworks\u002F01.nuxt","i-simple-icons-nuxtdotjs",{"title":245,"path":246,"stem":247,"icon":248},"Next.js","\u002Fintegrate\u002Fframeworks\u002Fnextjs","4.integrate\u002Fframeworks\u002F02.nextjs","i-simple-icons-nextdotjs",{"title":250,"path":251,"stem":252,"icon":253},"SvelteKit","\u002Fintegrate\u002Fframeworks\u002Fsveltekit","4.integrate\u002Fframeworks\u002F03.sveltekit","i-simple-icons-svelte",{"title":255,"path":256,"stem":257,"icon":258},"Nitro","\u002Fintegrate\u002Fframeworks\u002Fnitro","4.integrate\u002Fframeworks\u002F04.nitro","i-custom-nitro",{"title":260,"path":261,"stem":262,"icon":263},"TanStack Start","\u002Fintegrate\u002Fframeworks\u002Ftanstack-start","4.integrate\u002Fframeworks\u002F05.tanstack-start","i-custom-tanstack",{"title":265,"path":266,"stem":267,"icon":268},"NestJS","\u002Fintegrate\u002Fframeworks\u002Fnestjs","4.integrate\u002Fframeworks\u002F06.nestjs","i-simple-icons-nestjs",{"title":270,"path":271,"stem":272,"icon":273},"Express","\u002Fintegrate\u002Fframeworks\u002Fexpress","4.integrate\u002Fframeworks\u002F07.express","i-simple-icons-express",{"title":275,"path":276,"stem":277,"icon":278},"Hono","\u002Fintegrate\u002Fframeworks\u002Fhono","4.integrate\u002Fframeworks\u002F08.hono","i-simple-icons-hono",{"title":280,"path":281,"stem":282,"icon":283},"Fastify","\u002Fintegrate\u002Fframeworks\u002Ffastify","4.integrate\u002Fframeworks\u002F09.fastify","i-simple-icons-fastify",{"title":285,"path":286,"stem":287,"icon":288},"Elysia","\u002Fintegrate\u002Fframeworks\u002Felysia","4.integrate\u002Fframeworks\u002F10.elysia","i-custom-elysia",{"title":290,"path":291,"stem":292,"icon":293},"React Router","\u002Fintegrate\u002Fframeworks\u002Freact-router","4.integrate\u002Fframeworks\u002F11.react-router","i-custom-reactrouter",{"title":295,"path":296,"stem":297,"icon":298},"Cloudflare Workers","\u002Fintegrate\u002Fframeworks\u002Fcloudflare-workers","4.integrate\u002Fframeworks\u002F12.cloudflare-workers","i-simple-icons-cloudflare",{"title":300,"path":301,"stem":302,"icon":79},"Standalone","\u002Fintegrate\u002Fframeworks\u002Fstandalone","4.integrate\u002Fframeworks\u002F13.standalone",{"title":304,"path":305,"stem":306,"icon":307},"Astro","\u002Fintegrate\u002Fframeworks\u002Fastro","4.integrate\u002Fframeworks\u002F14.astro","i-simple-icons-astro",{"title":309,"path":310,"stem":311,"icon":312},"oRPC","\u002Fintegrate\u002Fframeworks\u002Forpc","4.integrate\u002Fframeworks\u002F15.orpc","i-lucide-network",{"title":314,"path":315,"stem":316,"icon":317},"AWS Lambda","\u002Fintegrate\u002Fframeworks\u002Faws-lambda","4.integrate\u002Fframeworks\u002F16.aws-lambda","i-custom-lambda",{"title":319,"path":320,"stem":321,"children":322,"page":34},"Use Cases","\u002Fuse-cases","5.use-cases",[323,326,331,359,386,418,439,444,449],{"title":41,"path":324,"stem":325,"icon":107},"\u002Fuse-cases\u002Foverview","5.use-cases\u002F0.overview",{"title":327,"path":328,"stem":329,"icon":330},"Client Logging","\u002Fuse-cases\u002Fclient-logging","5.use-cases\u002F1.client-logging","i-lucide-monitor",{"title":332,"icon":333,"path":334,"stem":335,"children":336,"page":34},"AI SDK","i-simple-icons-vercel","\u002Fuse-cases\u002Fai-sdk","5.use-cases\u002F2.ai-sdk",[337,340,345,350,355],{"title":41,"path":338,"stem":339,"icon":44},"\u002Fuse-cases\u002Fai-sdk\u002Foverview","5.use-cases\u002F2.ai-sdk\u002F01.overview",{"title":341,"path":342,"stem":343,"icon":344},"Usage","\u002Fuse-cases\u002Fai-sdk\u002Fusage","5.use-cases\u002F2.ai-sdk\u002F02.usage","i-lucide-code",{"title":346,"path":347,"stem":348,"icon":349},"Options","\u002Fuse-cases\u002Fai-sdk\u002Foptions","5.use-cases\u002F2.ai-sdk\u002F03.options","i-lucide-sliders",{"title":351,"path":352,"stem":353,"icon":354},"Metadata","\u002Fuse-cases\u002Fai-sdk\u002Fmetadata","5.use-cases\u002F2.ai-sdk\u002F04.metadata","i-lucide-database",{"title":356,"path":357,"stem":358,"icon":137},"Telemetry","\u002Fuse-cases\u002Fai-sdk\u002Ftelemetry","5.use-cases\u002F2.ai-sdk\u002F05.telemetry",{"title":360,"icon":361,"path":362,"stem":363,"children":364,"page":34},"Better Auth","i-simple-icons-betterauth","\u002Fuse-cases\u002Fbetter-auth","5.use-cases\u002F3.better-auth",[365,368,373,378,382],{"title":41,"path":366,"stem":367,"icon":44},"\u002Fuse-cases\u002Fbetter-auth\u002Foverview","5.use-cases\u002F3.better-auth\u002F01.overview",{"title":369,"path":370,"stem":371,"icon":372},"Identify User","\u002Fuse-cases\u002Fbetter-auth\u002Fidentify-user","5.use-cases\u002F3.better-auth\u002F02.identify-user","i-lucide-user-check",{"title":374,"path":375,"stem":376,"icon":377},"Middleware","\u002Fuse-cases\u002Fbetter-auth\u002Fmiddleware","5.use-cases\u002F3.better-auth\u002F03.middleware","i-lucide-shield",{"title":379,"path":380,"stem":381,"icon":330},"Client Sync","\u002Fuse-cases\u002Fbetter-auth\u002Fclient-sync","5.use-cases\u002F3.better-auth\u002F04.client-sync",{"title":383,"path":384,"stem":385,"icon":112},"Performance","\u002Fuse-cases\u002Fbetter-auth\u002Fperformance","5.use-cases\u002F3.better-auth\u002F05.performance",{"title":387,"icon":388,"path":389,"stem":390,"children":391,"page":34},"Audit Logs","i-lucide-shield-check","\u002Fuse-cases\u002Faudit","5.use-cases\u002F4.audit",[392,395,400,405,410,414],{"title":41,"path":393,"stem":394,"icon":44},"\u002Fuse-cases\u002Faudit\u002Foverview","5.use-cases\u002F4.audit\u002F01.overview",{"title":396,"path":397,"stem":398,"icon":399},"Schema","\u002Fuse-cases\u002Faudit\u002Fschema","5.use-cases\u002F4.audit\u002F02.schema","i-lucide-file-text",{"title":401,"path":402,"stem":403,"icon":404},"Recording","\u002Fuse-cases\u002Faudit\u002Frecording","5.use-cases\u002F4.audit\u002F03.recording","i-lucide-pen-line",{"title":406,"path":407,"stem":408,"icon":409},"Drains","\u002Fuse-cases\u002Faudit\u002Fpipeline","5.use-cases\u002F4.audit\u002F04.pipeline","i-lucide-link",{"title":411,"path":412,"stem":413,"icon":388},"Compliance","\u002Fuse-cases\u002Faudit\u002Fcompliance","5.use-cases\u002F4.audit\u002F05.compliance",{"title":415,"path":416,"stem":417,"icon":84},"Recipes","\u002Fuse-cases\u002Faudit\u002Frecipes","5.use-cases\u002F4.audit\u002F06.recipes",{"title":356,"icon":112,"path":419,"stem":420,"children":421,"page":34},"\u002Fuse-cases\u002Ftelemetry","5.use-cases\u002F4.telemetry",[422,425,430,435],{"title":41,"path":423,"stem":424,"icon":44},"\u002Fuse-cases\u002Ftelemetry\u002Foverview","5.use-cases\u002F4.telemetry\u002F01.overview",{"title":426,"path":427,"stem":428,"icon":429},"Setup","\u002Fuse-cases\u002Ftelemetry\u002Fsetup","5.use-cases\u002F4.telemetry\u002F02.setup","i-lucide-wrench",{"title":431,"path":432,"stem":433,"icon":434},"Ingest","\u002Fuse-cases\u002Ftelemetry\u002Fingest","5.use-cases\u002F4.telemetry\u002F03.ingest","i-lucide-server",{"title":436,"path":437,"stem":438,"icon":84},"Reference","\u002Fuse-cases\u002Ftelemetry\u002Freference","5.use-cases\u002F4.telemetry\u002F04.reference",{"title":440,"path":441,"stem":442,"icon":443},"Enrichers","\u002Fuse-cases\u002Fenrichers","5.use-cases\u002F5.enrichers","i-lucide-sparkles",{"title":445,"path":446,"stem":447,"icon":448},"eve","\u002Fuse-cases\u002Feve","5.use-cases\u002F5.eve","i-custom-eve",{"title":450,"path":451,"stem":452,"icon":434},"Node.js request logging","\u002Fuse-cases\u002Fstructured-logging-nodejs","5.use-cases\u002F6.structured-logging-nodejs",{"title":454,"path":455,"stem":456,"children":457,"page":34},"Extend","\u002Fextend","6.extend",[458,462,467,472,476,481,485,489,493,497,502,507],{"title":41,"path":459,"stem":460,"icon":461},"\u002Fextend\u002Foverview","6.extend\u002F0.overview","i-lucide-blocks",{"title":463,"path":464,"stem":465,"icon":466},"Stream","\u002Fextend\u002Fstream","6.extend\u002F1.stream","i-lucide-radio-tower",{"title":468,"path":469,"stem":470,"icon":471},"Custom framework","\u002Fextend\u002Fcustom-framework","6.extend\u002F10.custom-framework","i-lucide-puzzle",{"title":473,"path":474,"stem":475,"icon":466},"Diagnostics channel","\u002Fextend\u002Fdiagnostics-channel","6.extend\u002F11.diagnostics-channel",{"title":477,"path":478,"stem":479,"icon":480},"FS reader","\u002Fextend\u002Ffs-reader","6.extend\u002F2.fs-reader","i-lucide-folder-search",{"title":415,"path":482,"stem":483,"icon":484},"\u002Fextend\u002Fconsumer-recipes","6.extend\u002F3.consumer-recipes","i-lucide-chef-hat",{"title":486,"path":487,"stem":488,"icon":461},"Plugins","\u002Fextend\u002Fplugins","6.extend\u002F4.plugins",{"title":490,"path":491,"stem":492,"icon":443},"Custom enrichers","\u002Fextend\u002Fcustom-enrichers","6.extend\u002F5.custom-enrichers",{"title":494,"path":495,"stem":496,"icon":69},"Tail sampling","\u002Fextend\u002Ftail-sampling","6.extend\u002F6.tail-sampling",{"title":498,"path":499,"stem":500,"icon":501},"Identity headers","\u002Fextend\u002Fidentity-headers","6.extend\u002F7.identity-headers","i-lucide-fingerprint",{"title":503,"path":504,"stem":505,"icon":506},"Custom drains","\u002Fextend\u002Fcustom-drains","6.extend\u002F8.custom-drains","i-lucide-share-2",{"title":508,"path":509,"stem":510,"icon":511},"Drain pipeline","\u002Fextend\u002Fdrain-pipeline","6.extend\u002F9.drain-pipeline","i-lucide-workflow",{"title":436,"path":513,"stem":514,"children":515,"page":34},"\u002Freference","7.reference",[516,520,525,528,533,537,542,546],{"title":41,"path":517,"stem":518,"icon":519},"\u002Freference\u002Foverview","7.reference\u002F0.overview","i-lucide-book-marked",{"title":521,"path":522,"stem":523,"icon":524},"Configuration","\u002Freference\u002Fconfiguration","7.reference\u002F1.configuration","i-lucide-settings",{"title":383,"path":526,"stem":527,"icon":112},"\u002Freference\u002Fperformance","7.reference\u002F2.performance",{"title":529,"path":530,"stem":531,"icon":532},"Vite Plugin","\u002Freference\u002Fvite-plugin","7.reference\u002F3.vite-plugin","i-custom-vite",{"title":534,"path":535,"stem":536,"icon":388},"Best Practices","\u002Freference\u002Fbest-practices","7.reference\u002F4.best-practices",{"title":538,"path":539,"stem":540,"icon":541},"vs Other Loggers","\u002Freference\u002Fvs-other-loggers","7.reference\u002F5.vs-other-loggers","i-lucide-scale",{"title":543,"path":544,"stem":545,"icon":443},"Agent Skills","\u002Freference\u002Fagent-skills","7.reference\u002F6.agent-skills",{"title":547,"path":548,"stem":549,"icon":550},"Cost","\u002Freference\u002Fcost","7.reference\u002F7.cost","i-lucide-receipt",{"title":552,"path":553,"stem":554,"children":555,"page":34},"Compare","\u002Fcompare","8.compare",[556,560,564,568,572],{"title":557,"path":558,"stem":559,"icon":541},"evlog vs Pino","\u002Fcompare\u002Fpino","8.compare\u002F1.pino",{"title":561,"path":562,"stem":563,"icon":204},"evlog vs OpenTelemetry","\u002Fcompare\u002Fopentelemetry","8.compare\u002F2.opentelemetry",{"title":565,"path":566,"stem":567,"icon":541},"evlog vs LogTape","\u002Fcompare\u002Flogtape","8.compare\u002F3.logtape",{"title":569,"path":570,"stem":571,"icon":541},"evlog vs Winston: formats and request events","\u002Fcompare\u002Fwinston","8.compare\u002F4.winston",{"title":573,"path":574,"stem":575,"icon":541},"evlog vs Consola: reporters and request context","\u002Fcompare\u002Fconsola","8.compare\u002F5.consola",{"id":577,"title":578,"body":579,"description":2203,"extension":2204,"links":2205,"meta":2214,"navigation":2215,"path":217,"seo":2216,"stem":218,"__hash__":2217},"docs\u002F4.integrate\u002Fadapters\u002Fself-hosted\u002F01.fs.md","File System Adapter",{"type":580,"value":581,"toc":2183},"minimark",[582,586,618,664,668,671,714,717,720,1315,1321,1325,1334,1341,1358,1361,1365,1468,1472,1631,1635,1645,1652,1656,1665,1669,1672,1831,1835,1839,1858,1862,1945,1949,2002,2006,2009,2136,2140,2150,2154,2179],[583,584,585],"p",{},"The File System adapter writes your wide events to local NDJSON files (one JSON object per line, one file per day). This enables:",[587,588,589,602,612],"ul",{},[590,591,592,596,597,601],"li",{},[593,594,595],"strong",{},"AI agent integration"," - point a skill to ",[598,599,600],"code",{},".evlog\u002Flogs\u002F"," to parse structured logs for debugging and pattern analysis",[590,603,604,607,608,611],{},[593,605,606],{},"Local dev debugging"," - persistent log history without scrolling the terminal (",[598,609,610],{},"tail -f .evlog\u002Flogs\u002F2026-03-14.jsonl",")",[590,613,614,617],{},[593,615,616],{},"Production backup"," - combine with a network drain (Axiom, OTLP) for local fallback",[619,620,623,626,650],"prompt",{":actions":621,"description":622,"icon":219},"[\"copy\",\"cursor\",\"claude\"]","Add the file system drain adapter",[583,624,625],{},"Add the file system drain adapter to write evlog wide events locally as NDJSON files.",[627,628,629,632,635,638,641,644,647],"ol",{},[590,630,631],{},"Identify which framework I'm using and follow its evlog integration pattern",[590,633,634],{},"Install evlog if not already installed",[590,636,637],{},"Import createFsDrain from 'evlog\u002Ffs'",[590,639,640],{},"Wire createFsDrain() into my framework's drain configuration",[590,642,643],{},"Logs are written to .evlog\u002Flogs\u002F by default (one file per day, auto .gitignore)",[590,645,646],{},"Optionally configure dir, maxFiles, maxSizePerFile, or pretty options",[590,648,649],{},"Test by triggering a request and checking .evlog\u002Flogs\u002F*.jsonl",[583,651,652,653,659,660],{},"Adapter docs: ",[654,655,656],"a",{"href":656,"rel":657},"https:\u002F\u002Fwww.evlog.dev\u002Fintegrate\u002Fadapters\u002Fself-hosted\u002Ffs",[658],"nofollow","\nFramework setup: ",[654,661,662],{"href":662,"rel":663},"https:\u002F\u002Fwww.evlog.dev\u002Fintegrate\u002Fframeworks\u002Foverview",[658],[665,666,20],"h2",{"id":667},"installation",[583,669,670],{},"The File System adapter comes bundled with evlog:",[672,673,679],"pre",{"className":674,"code":675,"filename":676,"language":677,"meta":678,"style":678},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { createFsDrain } from 'evlog\u002Ffs'\n","src\u002Findex.ts","typescript","",[598,680,681],{"__ignoreMap":678},[682,683,686,690,694,698,701,704,707,711],"span",{"class":684,"line":685},"line",1,[682,687,689],{"class":688},"s7zQu","import",[682,691,693],{"class":692},"sMK4o"," {",[682,695,697],{"class":696},"sTEyZ"," createFsDrain",[682,699,700],{"class":692}," }",[682,702,703],{"class":688}," from",[682,705,706],{"class":692}," '",[682,708,710],{"class":709},"sfazB","evlog\u002Ffs",[682,712,713],{"class":692},"'\n",[665,715,25],{"id":716},"quick-start",[583,718,719],{},"No credentials or environment variables needed. Just wire the drain to your framework:",[721,722,723,837,968,985,1047,1101,1160,1214,1267],"code-group",{},[672,724,727],{"className":674,"code":725,"filename":726,"language":677,"meta":678,"style":678},"\u002F\u002F server\u002Fplugins\u002Fevlog-drain.ts\nimport { createFsDrain } from 'evlog\u002Ffs'\n\nexport default defineNitroPlugin((nitroApp) => {\n  nitroApp.hooks.hook('evlog:drain', createFsDrain())\n})\n","Nuxt \u002F Nitro",[598,728,729,735,754,761,792,828],{"__ignoreMap":678},[682,730,731],{"class":684,"line":685},[682,732,734],{"class":733},"sHwdD","\u002F\u002F server\u002Fplugins\u002Fevlog-drain.ts\n",[682,736,738,740,742,744,746,748,750,752],{"class":684,"line":737},2,[682,739,689],{"class":688},[682,741,693],{"class":692},[682,743,697],{"class":696},[682,745,700],{"class":692},[682,747,703],{"class":688},[682,749,706],{"class":692},[682,751,710],{"class":709},[682,753,713],{"class":692},[682,755,757],{"class":684,"line":756},3,[682,758,760],{"emptyLinePlaceholder":759},true,"\n",[682,762,764,767,770,774,777,779,783,785,789],{"class":684,"line":763},4,[682,765,766],{"class":688},"export",[682,768,769],{"class":688}," default",[682,771,773],{"class":772},"s2Zo4"," defineNitroPlugin",[682,775,776],{"class":696},"(",[682,778,776],{"class":692},[682,780,782],{"class":781},"sHdIc","nitroApp",[682,784,611],{"class":692},[682,786,788],{"class":787},"spNyl"," =>",[682,790,791],{"class":692}," {\n",[682,793,795,798,801,804,806,809,812,815,818,820,823,825],{"class":684,"line":794},5,[682,796,797],{"class":696},"  nitroApp",[682,799,800],{"class":692},".",[682,802,803],{"class":696},"hooks",[682,805,800],{"class":692},[682,807,808],{"class":772},"hook",[682,810,776],{"class":811},"swJcz",[682,813,814],{"class":692},"'",[682,816,817],{"class":709},"evlog:drain",[682,819,814],{"class":692},[682,821,822],{"class":692},",",[682,824,697],{"class":772},[682,826,827],{"class":811},"())\n",[682,829,831,834],{"class":684,"line":830},6,[682,832,833],{"class":692},"}",[682,835,836],{"class":696},")\n",[672,838,840],{"className":674,"code":839,"filename":245,"language":677,"meta":678,"style":678},"\u002F\u002F lib\u002Fevlog.ts — Node.js routes only; keep evlog\u002Ffs out of root instrumentation.ts\nimport { createEvlog } from 'evlog\u002Fnext'\nimport { createFsDrain } from 'evlog\u002Ffs'\n\nexport const { withEvlog, useLogger, log, createError } = createEvlog({\n  service: 'my-app',\n  drain: createFsDrain(),\n})\n",[598,841,842,847,867,885,889,928,946,961],{"__ignoreMap":678},[682,843,844],{"class":684,"line":685},[682,845,846],{"class":733},"\u002F\u002F lib\u002Fevlog.ts — Node.js routes only; keep evlog\u002Ffs out of root instrumentation.ts\n",[682,848,849,851,853,856,858,860,862,865],{"class":684,"line":737},[682,850,689],{"class":688},[682,852,693],{"class":692},[682,854,855],{"class":696}," createEvlog",[682,857,700],{"class":692},[682,859,703],{"class":688},[682,861,706],{"class":692},[682,863,864],{"class":709},"evlog\u002Fnext",[682,866,713],{"class":692},[682,868,869,871,873,875,877,879,881,883],{"class":684,"line":756},[682,870,689],{"class":688},[682,872,693],{"class":692},[682,874,697],{"class":696},[682,876,700],{"class":692},[682,878,703],{"class":688},[682,880,706],{"class":692},[682,882,710],{"class":709},[682,884,713],{"class":692},[682,886,887],{"class":684,"line":763},[682,888,760],{"emptyLinePlaceholder":759},[682,890,891,893,896,898,901,903,906,908,911,913,916,918,921,923,925],{"class":684,"line":794},[682,892,766],{"class":688},[682,894,895],{"class":787}," const",[682,897,693],{"class":692},[682,899,900],{"class":696}," withEvlog",[682,902,822],{"class":692},[682,904,905],{"class":696}," useLogger",[682,907,822],{"class":692},[682,909,910],{"class":696}," log",[682,912,822],{"class":692},[682,914,915],{"class":696}," createError ",[682,917,833],{"class":692},[682,919,920],{"class":692}," =",[682,922,855],{"class":772},[682,924,776],{"class":696},[682,926,927],{"class":692},"{\n",[682,929,930,933,936,938,941,943],{"class":684,"line":830},[682,931,932],{"class":811},"  service",[682,934,935],{"class":692},":",[682,937,706],{"class":692},[682,939,940],{"class":709},"my-app",[682,942,814],{"class":692},[682,944,945],{"class":692},",\n",[682,947,949,952,954,956,959],{"class":684,"line":948},7,[682,950,951],{"class":811},"  drain",[682,953,935],{"class":692},[682,955,697],{"class":772},[682,957,958],{"class":696},"()",[682,960,945],{"class":692},[682,962,964,966],{"class":684,"line":963},8,[682,965,833],{"class":692},[682,967,836],{"class":696},[969,970,972,973,976,977,980,981,984],"callout",{"color":971,"icon":13},"info","The FS adapter requires Node.js (",[598,974,975],{},"node:fs","). On the Edge runtime, or when its directory is not writable, it logs a one-time ",[598,978,979],{},"[evlog\u002Ffs]"," warning and skips writes, so attaching it on a serverless host is safe but pointless, since only the temp directory is writable there and it does not outlive the instance. Use ",[598,982,983],{},"evlog\u002Fmemory"," or an HTTP adapter for those.",[672,986,988],{"className":674,"code":987,"filename":275,"language":677,"meta":678,"style":678},"import { createFsDrain } from 'evlog\u002Ffs'\n\napp.use(evlog({ drain: createFsDrain() }))\n",[598,989,990,1008,1012],{"__ignoreMap":678},[682,991,992,994,996,998,1000,1002,1004,1006],{"class":684,"line":685},[682,993,689],{"class":688},[682,995,693],{"class":692},[682,997,697],{"class":696},[682,999,700],{"class":692},[682,1001,703],{"class":688},[682,1003,706],{"class":692},[682,1005,710],{"class":709},[682,1007,713],{"class":692},[682,1009,1010],{"class":684,"line":737},[682,1011,760],{"emptyLinePlaceholder":759},[682,1013,1014,1017,1019,1022,1024,1027,1029,1032,1035,1037,1039,1042,1044],{"class":684,"line":756},[682,1015,1016],{"class":696},"app",[682,1018,800],{"class":692},[682,1020,1021],{"class":772},"use",[682,1023,776],{"class":696},[682,1025,1026],{"class":772},"evlog",[682,1028,776],{"class":696},[682,1030,1031],{"class":692},"{",[682,1033,1034],{"class":811}," drain",[682,1036,935],{"class":692},[682,1038,697],{"class":772},[682,1040,1041],{"class":696},"() ",[682,1043,833],{"class":692},[682,1045,1046],{"class":696},"))\n",[672,1048,1049],{"className":674,"code":987,"filename":270,"language":677,"meta":678,"style":678},[598,1050,1051,1069,1073],{"__ignoreMap":678},[682,1052,1053,1055,1057,1059,1061,1063,1065,1067],{"class":684,"line":685},[682,1054,689],{"class":688},[682,1056,693],{"class":692},[682,1058,697],{"class":696},[682,1060,700],{"class":692},[682,1062,703],{"class":688},[682,1064,706],{"class":692},[682,1066,710],{"class":709},[682,1068,713],{"class":692},[682,1070,1071],{"class":684,"line":737},[682,1072,760],{"emptyLinePlaceholder":759},[682,1074,1075,1077,1079,1081,1083,1085,1087,1089,1091,1093,1095,1097,1099],{"class":684,"line":756},[682,1076,1016],{"class":696},[682,1078,800],{"class":692},[682,1080,1021],{"class":772},[682,1082,776],{"class":696},[682,1084,1026],{"class":772},[682,1086,776],{"class":696},[682,1088,1031],{"class":692},[682,1090,1034],{"class":811},[682,1092,935],{"class":692},[682,1094,697],{"class":772},[682,1096,1041],{"class":696},[682,1098,833],{"class":692},[682,1100,1046],{"class":696},[672,1102,1104],{"className":674,"code":1103,"filename":280,"language":677,"meta":678,"style":678},"import { createFsDrain } from 'evlog\u002Ffs'\n\nawait app.register(evlog, { drain: createFsDrain() })\n",[598,1105,1106,1124,1128],{"__ignoreMap":678},[682,1107,1108,1110,1112,1114,1116,1118,1120,1122],{"class":684,"line":685},[682,1109,689],{"class":688},[682,1111,693],{"class":692},[682,1113,697],{"class":696},[682,1115,700],{"class":692},[682,1117,703],{"class":688},[682,1119,706],{"class":692},[682,1121,710],{"class":709},[682,1123,713],{"class":692},[682,1125,1126],{"class":684,"line":737},[682,1127,760],{"emptyLinePlaceholder":759},[682,1129,1130,1133,1136,1138,1141,1144,1146,1148,1150,1152,1154,1156,1158],{"class":684,"line":756},[682,1131,1132],{"class":688},"await",[682,1134,1135],{"class":696}," app",[682,1137,800],{"class":692},[682,1139,1140],{"class":772},"register",[682,1142,1143],{"class":696},"(evlog",[682,1145,822],{"class":692},[682,1147,693],{"class":692},[682,1149,1034],{"class":811},[682,1151,935],{"class":692},[682,1153,697],{"class":772},[682,1155,1041],{"class":696},[682,1157,833],{"class":692},[682,1159,836],{"class":696},[672,1161,1162],{"className":674,"code":987,"filename":285,"language":677,"meta":678,"style":678},[598,1163,1164,1182,1186],{"__ignoreMap":678},[682,1165,1166,1168,1170,1172,1174,1176,1178,1180],{"class":684,"line":685},[682,1167,689],{"class":688},[682,1169,693],{"class":692},[682,1171,697],{"class":696},[682,1173,700],{"class":692},[682,1175,703],{"class":688},[682,1177,706],{"class":692},[682,1179,710],{"class":709},[682,1181,713],{"class":692},[682,1183,1184],{"class":684,"line":737},[682,1185,760],{"emptyLinePlaceholder":759},[682,1187,1188,1190,1192,1194,1196,1198,1200,1202,1204,1206,1208,1210,1212],{"class":684,"line":756},[682,1189,1016],{"class":696},[682,1191,800],{"class":692},[682,1193,1021],{"class":772},[682,1195,776],{"class":696},[682,1197,1026],{"class":772},[682,1199,776],{"class":696},[682,1201,1031],{"class":692},[682,1203,1034],{"class":811},[682,1205,935],{"class":692},[682,1207,697],{"class":772},[682,1209,1041],{"class":696},[682,1211,833],{"class":692},[682,1213,1046],{"class":696},[672,1215,1217],{"className":674,"code":1216,"filename":265,"language":677,"meta":678,"style":678},"import { createFsDrain } from 'evlog\u002Ffs'\n\nEvlogModule.forRoot({ drain: createFsDrain() })\n",[598,1218,1219,1237,1241],{"__ignoreMap":678},[682,1220,1221,1223,1225,1227,1229,1231,1233,1235],{"class":684,"line":685},[682,1222,689],{"class":688},[682,1224,693],{"class":692},[682,1226,697],{"class":696},[682,1228,700],{"class":692},[682,1230,703],{"class":688},[682,1232,706],{"class":692},[682,1234,710],{"class":709},[682,1236,713],{"class":692},[682,1238,1239],{"class":684,"line":737},[682,1240,760],{"emptyLinePlaceholder":759},[682,1242,1243,1246,1248,1251,1253,1255,1257,1259,1261,1263,1265],{"class":684,"line":756},[682,1244,1245],{"class":696},"EvlogModule",[682,1247,800],{"class":692},[682,1249,1250],{"class":772},"forRoot",[682,1252,776],{"class":696},[682,1254,1031],{"class":692},[682,1256,1034],{"class":811},[682,1258,935],{"class":692},[682,1260,697],{"class":772},[682,1262,1041],{"class":696},[682,1264,833],{"class":692},[682,1266,836],{"class":696},[672,1268,1270],{"className":674,"code":1269,"filename":300,"language":677,"meta":678,"style":678},"import { createFsDrain } from 'evlog\u002Ffs'\n\ninitLogger({ drain: createFsDrain() })\n",[598,1271,1272,1290,1294],{"__ignoreMap":678},[682,1273,1274,1276,1278,1280,1282,1284,1286,1288],{"class":684,"line":685},[682,1275,689],{"class":688},[682,1277,693],{"class":692},[682,1279,697],{"class":696},[682,1281,700],{"class":692},[682,1283,703],{"class":688},[682,1285,706],{"class":692},[682,1287,710],{"class":709},[682,1289,713],{"class":692},[682,1291,1292],{"class":684,"line":737},[682,1293,760],{"emptyLinePlaceholder":759},[682,1295,1296,1299,1301,1303,1305,1307,1309,1311,1313],{"class":684,"line":756},[682,1297,1298],{"class":772},"initLogger",[682,1300,776],{"class":696},[682,1302,1031],{"class":692},[682,1304,1034],{"class":811},[682,1306,935],{"class":692},[682,1308,697],{"class":772},[682,1310,1041],{"class":696},[682,1312,833],{"class":692},[682,1314,836],{"class":696},[583,1316,1317,1318,1320],{},"Logs start appearing in ",[598,1319,600],{}," immediately.",[665,1322,1324],{"id":1323},"where-the-files-land","Where the files land",[672,1326,1332],{"className":1327,"code":1329,"filename":1330,"language":1331,"meta":678},[1328],"language-text",".evlog\u002F\n  logs\u002F\n    2026-03-14.jsonl    ← one file per day\n    2026-03-13.jsonl\n    2026-03-12.jsonl\n",".evlog\u002Flogs directory layout","text",[598,1333,1329],{"__ignoreMap":678},[583,1335,1336,1337,1340],{},"Each ",[598,1338,1339],{},".jsonl"," file contains one JSON object per line (NDJSON format), making it easy to parse, grep, and stream.",[969,1342,1345,1346,1349,1350,1353,1354,1357],{"color":1343,"icon":1344},"success","i-lucide-git-branch","A ",[598,1347,1348],{},".gitignore"," is automatically created on first write, inside the ",[598,1351,1352],{},".evlog\u002F"," ancestor directory when present or in the configured ",[598,1355,1356],{},"dir"," otherwise. Log files are never committed to version control.",[665,1359,521],{"id":1360},"configuration",[1362,1363,346],"h3",{"id":1364},"options",[1366,1367,1368,1387],"table",{},[1369,1370,1371],"thead",{},[1372,1373,1374,1378,1381,1384],"tr",{},[1375,1376,1377],"th",{},"Option",[1375,1379,1380],{},"Type",[1375,1382,1383],{},"Default",[1375,1385,1386],{},"Description",[1388,1389,1390,1410,1430,1448],"tbody",{},[1372,1391,1392,1397,1402,1407],{},[1393,1394,1395],"td",{},[598,1396,1356],{},[1393,1398,1399],{},[598,1400,1401],{},"string",[1393,1403,1404],{},[598,1405,1406],{},"'.evlog\u002Flogs'",[1393,1408,1409],{},"Directory for log files",[1372,1411,1412,1417,1422,1427],{},[1393,1413,1414],{},[598,1415,1416],{},"maxFiles",[1393,1418,1419],{},[598,1420,1421],{},"number",[1393,1423,1424],{},[598,1425,1426],{},"undefined",[1393,1428,1429],{},"Max files to keep (auto-deletes oldest)",[1372,1431,1432,1437,1441,1445],{},[1393,1433,1434],{},[598,1435,1436],{},"maxSizePerFile",[1393,1438,1439],{},[598,1440,1421],{},[1393,1442,1443],{},[598,1444,1426],{},[1393,1446,1447],{},"Max bytes per file before rotating",[1372,1449,1450,1455,1460,1465],{},[1393,1451,1452],{},[598,1453,1454],{},"pretty",[1393,1456,1457],{},[598,1458,1459],{},"boolean",[1393,1461,1462],{},[598,1463,1464],{},"false",[1393,1466,1467],{},"Pretty-print JSON (multi-line, readable)",[1362,1469,1471],{"id":1470},"examples","Examples",[672,1473,1476],{"className":674,"code":1474,"filename":1475,"language":677,"meta":678,"style":678},"\u002F\u002F Keep only the last 7 days of logs\ncreateFsDrain({ maxFiles: 7 })\n\n\u002F\u002F Rotate files at 10MB, keep 30 files\ncreateFsDrain({\n  maxSizePerFile: 10 * 1024 * 1024,\n  maxFiles: 30,\n})\n\n\u002F\u002F Pretty-print for human reading\ncreateFsDrain({ pretty: true })\n\n\u002F\u002F Custom directory\ncreateFsDrain({ dir: '\u002Fvar\u002Flog\u002Fmyapp' })\n","server\u002Fplugins\u002Fevlog-drain.ts",[598,1477,1478,1483,1505,1509,1514,1522,1544,1556,1562,1567,1573,1595,1600,1606],{"__ignoreMap":678},[682,1479,1480],{"class":684,"line":685},[682,1481,1482],{"class":733},"\u002F\u002F Keep only the last 7 days of logs\n",[682,1484,1485,1488,1490,1492,1495,1497,1501,1503],{"class":684,"line":737},[682,1486,1487],{"class":772},"createFsDrain",[682,1489,776],{"class":696},[682,1491,1031],{"class":692},[682,1493,1494],{"class":811}," maxFiles",[682,1496,935],{"class":692},[682,1498,1500],{"class":1499},"sbssI"," 7",[682,1502,700],{"class":692},[682,1504,836],{"class":696},[682,1506,1507],{"class":684,"line":756},[682,1508,760],{"emptyLinePlaceholder":759},[682,1510,1511],{"class":684,"line":763},[682,1512,1513],{"class":733},"\u002F\u002F Rotate files at 10MB, keep 30 files\n",[682,1515,1516,1518,1520],{"class":684,"line":794},[682,1517,1487],{"class":772},[682,1519,776],{"class":696},[682,1521,927],{"class":692},[682,1523,1524,1527,1529,1532,1535,1538,1540,1542],{"class":684,"line":830},[682,1525,1526],{"class":811},"  maxSizePerFile",[682,1528,935],{"class":692},[682,1530,1531],{"class":1499}," 10",[682,1533,1534],{"class":692}," *",[682,1536,1537],{"class":1499}," 1024",[682,1539,1534],{"class":692},[682,1541,1537],{"class":1499},[682,1543,945],{"class":692},[682,1545,1546,1549,1551,1554],{"class":684,"line":948},[682,1547,1548],{"class":811},"  maxFiles",[682,1550,935],{"class":692},[682,1552,1553],{"class":1499}," 30",[682,1555,945],{"class":692},[682,1557,1558,1560],{"class":684,"line":963},[682,1559,833],{"class":692},[682,1561,836],{"class":696},[682,1563,1565],{"class":684,"line":1564},9,[682,1566,760],{"emptyLinePlaceholder":759},[682,1568,1570],{"class":684,"line":1569},10,[682,1571,1572],{"class":733},"\u002F\u002F Pretty-print for human reading\n",[682,1574,1576,1578,1580,1582,1585,1587,1591,1593],{"class":684,"line":1575},11,[682,1577,1487],{"class":772},[682,1579,776],{"class":696},[682,1581,1031],{"class":692},[682,1583,1584],{"class":811}," pretty",[682,1586,935],{"class":692},[682,1588,1590],{"class":1589},"sfNiH"," true",[682,1592,700],{"class":692},[682,1594,836],{"class":696},[682,1596,1598],{"class":684,"line":1597},12,[682,1599,760],{"emptyLinePlaceholder":759},[682,1601,1603],{"class":684,"line":1602},13,[682,1604,1605],{"class":733},"\u002F\u002F Custom directory\n",[682,1607,1609,1611,1613,1615,1618,1620,1622,1625,1627,1629],{"class":684,"line":1608},14,[682,1610,1487],{"class":772},[682,1612,776],{"class":696},[682,1614,1031],{"class":692},[682,1616,1617],{"class":811}," dir",[682,1619,935],{"class":692},[682,1621,706],{"class":692},[682,1623,1624],{"class":709},"\u002Fvar\u002Flog\u002Fmyapp",[682,1626,814],{"class":692},[682,1628,700],{"class":692},[682,1630,836],{"class":696},[1362,1632,1634],{"id":1633},"rotate-by-size-or-by-day","Rotate by size or by day",[583,1636,1637,1638,1641,1642,1644],{},"By default, a new file is created each day (",[598,1639,1640],{},"2026-03-14.jsonl","). When ",[598,1643,1436],{}," is set, the adapter creates suffixed files when the current file exceeds the limit:",[672,1646,1650],{"className":1647,"code":1648,"filename":1649,"language":1331,"meta":678},[1328],".evlog\u002Flogs\u002F\n  2026-03-14.jsonl      ← base file (full)\n  2026-03-14.1.jsonl    ← first rotation\n  2026-03-14.2.jsonl    ← second rotation\n","Rotated log files",[598,1651,1648],{"__ignoreMap":678},[1362,1653,1655],{"id":1654},"delete-old-files-on-a-schedule","Delete old files on a schedule",[583,1657,1658,1659,1661,1662,1664],{},"When ",[598,1660,1416],{}," is set, the adapter automatically deletes the oldest ",[598,1663,1339],{}," files after each write, keeping only the most recent files.",[665,1666,1668],{"id":1667},"write-to-disk-and-ship-to-a-service","Write to disk and ship to a service",[583,1670,1671],{},"Use the FS adapter alongside a network drain for local backup:",[672,1673,1675],{"className":674,"code":1674,"filename":1475,"language":677,"meta":678,"style":678},"import { createFsDrain } from 'evlog\u002Ffs'\nimport { createAxiomDrain } from 'evlog\u002Faxiom'\n\nconst fs = createFsDrain({ maxFiles: 7 })\nconst axiom = createAxiomDrain()\n\nconst drain = async (ctx) => {\n  await Promise.allSettled([fs(ctx), axiom(ctx)])\n}\n",[598,1676,1677,1695,1715,1719,1746,1760,1764,1788,1826],{"__ignoreMap":678},[682,1678,1679,1681,1683,1685,1687,1689,1691,1693],{"class":684,"line":685},[682,1680,689],{"class":688},[682,1682,693],{"class":692},[682,1684,697],{"class":696},[682,1686,700],{"class":692},[682,1688,703],{"class":688},[682,1690,706],{"class":692},[682,1692,710],{"class":709},[682,1694,713],{"class":692},[682,1696,1697,1699,1701,1704,1706,1708,1710,1713],{"class":684,"line":737},[682,1698,689],{"class":688},[682,1700,693],{"class":692},[682,1702,1703],{"class":696}," createAxiomDrain",[682,1705,700],{"class":692},[682,1707,703],{"class":688},[682,1709,706],{"class":692},[682,1711,1712],{"class":709},"evlog\u002Faxiom",[682,1714,713],{"class":692},[682,1716,1717],{"class":684,"line":756},[682,1718,760],{"emptyLinePlaceholder":759},[682,1720,1721,1724,1727,1730,1732,1734,1736,1738,1740,1742,1744],{"class":684,"line":763},[682,1722,1723],{"class":787},"const",[682,1725,1726],{"class":696}," fs ",[682,1728,1729],{"class":692},"=",[682,1731,697],{"class":772},[682,1733,776],{"class":696},[682,1735,1031],{"class":692},[682,1737,1494],{"class":811},[682,1739,935],{"class":692},[682,1741,1500],{"class":1499},[682,1743,700],{"class":692},[682,1745,836],{"class":696},[682,1747,1748,1750,1753,1755,1757],{"class":684,"line":794},[682,1749,1723],{"class":787},[682,1751,1752],{"class":696}," axiom ",[682,1754,1729],{"class":692},[682,1756,1703],{"class":772},[682,1758,1759],{"class":696},"()\n",[682,1761,1762],{"class":684,"line":830},[682,1763,760],{"emptyLinePlaceholder":759},[682,1765,1766,1768,1771,1773,1776,1779,1782,1784,1786],{"class":684,"line":948},[682,1767,1723],{"class":787},[682,1769,1770],{"class":696}," drain ",[682,1772,1729],{"class":692},[682,1774,1775],{"class":787}," async",[682,1777,1778],{"class":692}," (",[682,1780,1781],{"class":781},"ctx",[682,1783,611],{"class":692},[682,1785,788],{"class":787},[682,1787,791],{"class":692},[682,1789,1790,1793,1797,1799,1802,1805,1808,1810,1812,1814,1816,1819,1821,1823],{"class":684,"line":963},[682,1791,1792],{"class":688},"  await",[682,1794,1796],{"class":1795},"sBMFI"," Promise",[682,1798,800],{"class":692},[682,1800,1801],{"class":772},"allSettled",[682,1803,1804],{"class":811},"([",[682,1806,1807],{"class":772},"fs",[682,1809,776],{"class":811},[682,1811,1781],{"class":696},[682,1813,611],{"class":811},[682,1815,822],{"class":692},[682,1817,1818],{"class":772}," axiom",[682,1820,776],{"class":811},[682,1822,1781],{"class":696},[682,1824,1825],{"class":811},")])\n",[682,1827,1828],{"class":684,"line":1564},[682,1829,1830],{"class":692},"}\n",[665,1832,1834],{"id":1833},"read-back-what-you-wrote","Read back what you wrote",[1362,1836,1838],{"id":1837},"stream-in-real-time","Stream in real-time",[672,1840,1845],{"className":1841,"code":1842,"filename":1843,"language":1844,"meta":678,"style":678},"language-bash shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","tail -f .evlog\u002Flogs\u002F2026-03-14.jsonl\n","Terminal","bash",[598,1846,1847],{"__ignoreMap":678},[682,1848,1849,1852,1855],{"class":684,"line":685},[682,1850,1851],{"class":1795},"tail",[682,1853,1854],{"class":709}," -f",[682,1856,1857],{"class":709}," .evlog\u002Flogs\u002F2026-03-14.jsonl\n",[1362,1859,1861],{"id":1860},"search-with-jq","Search with jq",[672,1863,1865],{"className":1841,"code":1864,"filename":1843,"language":1844,"meta":678,"style":678},"# Find errors\ncat .evlog\u002Flogs\u002F2026-03-14.jsonl | jq 'select(.level == \"error\")'\n\n# Slow requests (over 1s)\ncat .evlog\u002Flogs\u002F2026-03-14.jsonl | jq 'select(.durationMs > 1000)'\n\n# Requests by path\ncat .evlog\u002Flogs\u002F2026-03-14.jsonl | jq 'select(.path == \"\u002Fapi\u002Fcheckout\")'\n",[598,1866,1867,1872,1893,1897,1902,1919,1923,1928],{"__ignoreMap":678},[682,1868,1869],{"class":684,"line":685},[682,1870,1871],{"class":733},"# Find errors\n",[682,1873,1874,1877,1880,1883,1886,1888,1891],{"class":684,"line":737},[682,1875,1876],{"class":1795},"cat",[682,1878,1879],{"class":709}," .evlog\u002Flogs\u002F2026-03-14.jsonl",[682,1881,1882],{"class":692}," |",[682,1884,1885],{"class":1795}," jq",[682,1887,706],{"class":692},[682,1889,1890],{"class":709},"select(.level == \"error\")",[682,1892,713],{"class":692},[682,1894,1895],{"class":684,"line":756},[682,1896,760],{"emptyLinePlaceholder":759},[682,1898,1899],{"class":684,"line":763},[682,1900,1901],{"class":733},"# Slow requests (over 1s)\n",[682,1903,1904,1906,1908,1910,1912,1914,1917],{"class":684,"line":794},[682,1905,1876],{"class":1795},[682,1907,1879],{"class":709},[682,1909,1882],{"class":692},[682,1911,1885],{"class":1795},[682,1913,706],{"class":692},[682,1915,1916],{"class":709},"select(.durationMs > 1000)",[682,1918,713],{"class":692},[682,1920,1921],{"class":684,"line":830},[682,1922,760],{"emptyLinePlaceholder":759},[682,1924,1925],{"class":684,"line":948},[682,1926,1927],{"class":733},"# Requests by path\n",[682,1929,1930,1932,1934,1936,1938,1940,1943],{"class":684,"line":963},[682,1931,1876],{"class":1795},[682,1933,1879],{"class":709},[682,1935,1882],{"class":692},[682,1937,1885],{"class":1795},[682,1939,706],{"class":692},[682,1941,1942],{"class":709},"select(.path == \"\u002Fapi\u002Fcheckout\")",[682,1944,713],{"class":692},[1362,1946,1948],{"id":1947},"search-with-grep","Search with grep",[672,1950,1952],{"className":1841,"code":1951,"filename":1843,"language":1844,"meta":678,"style":678},"# Find all errors\ngrep '\"level\":\"error\"' .evlog\u002Flogs\u002F2026-03-14.jsonl\n\n# Find by request ID\ngrep 'req_abc123' .evlog\u002Flogs\u002F*.jsonl\n",[598,1953,1954,1959,1973,1977,1982],{"__ignoreMap":678},[682,1955,1956],{"class":684,"line":685},[682,1957,1958],{"class":733},"# Find all errors\n",[682,1960,1961,1964,1966,1969,1971],{"class":684,"line":737},[682,1962,1963],{"class":1795},"grep",[682,1965,706],{"class":692},[682,1967,1968],{"class":709},"\"level\":\"error\"",[682,1970,814],{"class":692},[682,1972,1857],{"class":709},[682,1974,1975],{"class":684,"line":756},[682,1976,760],{"emptyLinePlaceholder":759},[682,1978,1979],{"class":684,"line":763},[682,1980,1981],{"class":733},"# Find by request ID\n",[682,1983,1984,1986,1988,1991,1993,1996,1999],{"class":684,"line":794},[682,1985,1963],{"class":1795},[682,1987,706],{"class":692},[682,1989,1990],{"class":709},"req_abc123",[682,1992,814],{"class":692},[682,1994,1995],{"class":709}," .evlog\u002Flogs\u002F",[682,1997,1998],{"class":696},"*",[682,2000,2001],{"class":709},".jsonl\n",[665,2003,2005],{"id":2004},"call-the-drain-without-a-framework","Call the drain without a framework",[583,2007,2008],{},"For advanced use cases, use the lower-level write functions:",[672,2010,2012],{"className":674,"code":2011,"filename":676,"language":677,"meta":678,"style":678},"import { writeToFs, writeBatchToFs } from 'evlog\u002Ffs'\n\nawait writeToFs(event, {\n  dir: '.evlog\u002Flogs',\n  pretty: false,\n})\n\nawait writeBatchToFs(events, {\n  dir: '.evlog\u002Flogs',\n  pretty: false,\n})\n",[598,2013,2014,2038,2042,2055,2071,2083,2089,2093,2106,2120,2130],{"__ignoreMap":678},[682,2015,2016,2018,2020,2023,2025,2028,2030,2032,2034,2036],{"class":684,"line":685},[682,2017,689],{"class":688},[682,2019,693],{"class":692},[682,2021,2022],{"class":696}," writeToFs",[682,2024,822],{"class":692},[682,2026,2027],{"class":696}," writeBatchToFs",[682,2029,700],{"class":692},[682,2031,703],{"class":688},[682,2033,706],{"class":692},[682,2035,710],{"class":709},[682,2037,713],{"class":692},[682,2039,2040],{"class":684,"line":737},[682,2041,760],{"emptyLinePlaceholder":759},[682,2043,2044,2046,2048,2051,2053],{"class":684,"line":756},[682,2045,1132],{"class":688},[682,2047,2022],{"class":772},[682,2049,2050],{"class":696},"(event",[682,2052,822],{"class":692},[682,2054,791],{"class":692},[682,2056,2057,2060,2062,2064,2067,2069],{"class":684,"line":763},[682,2058,2059],{"class":811},"  dir",[682,2061,935],{"class":692},[682,2063,706],{"class":692},[682,2065,2066],{"class":709},".evlog\u002Flogs",[682,2068,814],{"class":692},[682,2070,945],{"class":692},[682,2072,2073,2076,2078,2081],{"class":684,"line":794},[682,2074,2075],{"class":811},"  pretty",[682,2077,935],{"class":692},[682,2079,2080],{"class":1589}," false",[682,2082,945],{"class":692},[682,2084,2085,2087],{"class":684,"line":830},[682,2086,833],{"class":692},[682,2088,836],{"class":696},[682,2090,2091],{"class":684,"line":948},[682,2092,760],{"emptyLinePlaceholder":759},[682,2094,2095,2097,2099,2102,2104],{"class":684,"line":963},[682,2096,1132],{"class":688},[682,2098,2027],{"class":772},[682,2100,2101],{"class":696},"(events",[682,2103,822],{"class":692},[682,2105,791],{"class":692},[682,2107,2108,2110,2112,2114,2116,2118],{"class":684,"line":1564},[682,2109,2059],{"class":811},[682,2111,935],{"class":692},[682,2113,706],{"class":692},[682,2115,2066],{"class":709},[682,2117,814],{"class":692},[682,2119,945],{"class":692},[682,2121,2122,2124,2126,2128],{"class":684,"line":1569},[682,2123,2075],{"class":811},[682,2125,935],{"class":692},[682,2127,2080],{"class":1589},[682,2129,945],{"class":692},[682,2131,2132,2134],{"class":684,"line":1575},[682,2133,833],{"class":692},[682,2135,836],{"class":696},[665,2137,2139],{"id":2138},"hand-the-file-to-an-agent","Hand the file to an agent",[583,2141,2142,2143,2149],{},"The file system drain pairs with the ",[654,2144,2145,2148],{"href":544},[598,2146,2147],{},"analyze-logs"," agent skill",". When installed, your AI assistant can read the NDJSON logs directly to debug errors, trace requests, and investigate performance without any external tools.",[665,2151,2153],{"id":2152},"next-steps","Next Steps",[587,2155,2156,2161,2167,2173],{},[590,2157,2158,2160],{},[654,2159,543],{"href":544}," - Let AI analyze your logs",[590,2162,2163,2166],{},[654,2164,2165],{"href":162},"Axiom Adapter"," - Send logs to Axiom for querying and dashboards",[590,2168,2169,2172],{},[654,2170,2171],{"href":509},"Pipeline"," - Add batching and retry to any drain",[590,2174,2175,2178],{},[654,2176,2177],{"href":504},"Custom Adapters"," - Build your own adapter",[2180,2181,2182],"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 .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 .s2Zo4, html code.shiki .s2Zo4{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}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}html pre.shiki code .spNyl, html code.shiki .spNyl{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .sbssI, html code.shiki .sbssI{--shiki-light:#F76D47;--shiki-default:#F78C6C;--shiki-dark:#F78C6C}html pre.shiki code .sfNiH, html code.shiki .sfNiH{--shiki-light:#FF5370;--shiki-default:#FF9CAC;--shiki-dark:#FF9CAC}html pre.shiki code .sBMFI, html code.shiki .sBMFI{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}",{"title":678,"searchDepth":737,"depth":737,"links":2184},[2185,2186,2187,2188,2194,2195,2200,2201,2202],{"id":667,"depth":737,"text":20},{"id":716,"depth":737,"text":25},{"id":1323,"depth":737,"text":1324},{"id":1360,"depth":737,"text":521,"children":2189},[2190,2191,2192,2193],{"id":1364,"depth":756,"text":346},{"id":1470,"depth":756,"text":1471},{"id":1633,"depth":756,"text":1634},{"id":1654,"depth":756,"text":1655},{"id":1667,"depth":737,"text":1668},{"id":1833,"depth":737,"text":1834,"children":2196},[2197,2198,2199],{"id":1837,"depth":756,"text":1838},{"id":1860,"depth":756,"text":1861},{"id":1947,"depth":756,"text":1948},{"id":2004,"depth":737,"text":2005},{"id":2138,"depth":737,"text":2139},{"id":2152,"depth":737,"text":2153},"Write wide events to the local file system as NDJSON for local debugging, AI agent integration, and production backup.","md",[2206,2213],{"label":2207,"icon":2208,"to":2209,"target":2210,"color":2211,"variant":2212},"NDJSON Format","i-lucide-external-link","https:\u002F\u002Fgithub.com\u002Fndjson\u002Fndjson-spec","_blank","neutral","subtle",{"label":2165,"icon":164,"to":162,"color":2211,"variant":2212},{},{"title":216,"icon":219},{"title":578,"description":2203},"qTrNusBylR8EV6oy6tecrqeiujYbk3pUQ17J4K5q3kc",[2219,2221],{"title":206,"path":207,"stem":208,"description":2220,"icon":209,"children":-1},"Send wide events to HyperDX over OTLP\u002FHTTP, using its documented endpoint and authorization header. Configured from environment variables.",{"title":221,"path":222,"stem":223,"description":2222,"icon":224,"children":-1},"Self-hosted retention using NuxtHub database storage. Store, query, and clean up your wide events with no external dependency.",1790280243379]