---
title: "Elysia"
description: "Use Blyp as an Elysia plugin and access the request logger as ctx.log."
canonical_url: "https://www.blyp.dev/docs/integrations/elysia"
markdown_url: "https://www.blyp.dev/docs/integrations/elysia.md"
last_updated: "2018-10-20"
x_farming_labs_generated_preamble: true
---

# Elysia
URL: /docs/integrations/elysia
LLM index: /llms.txt
Description: Use Blyp as an Elysia plugin and access the request logger as ctx.log.

# Elysia

Import from `@blyp/core/elysia`.

```ts
import { Elysia } from "elysia";
import { createLogger } from "@blyp/core/elysia";

const app = new Elysia()
  .use(createLogger({
    level: "debug",
    customProps: (ctx) => ({
      framework: "elysia",
      path: ctx.path,
    }),
  }))
  .get("/hello", ({ log }) => {
    log.info("elysia-route");
    return "ok";
  });
```

## How it works

- Blyp decorates the app with `log`
- request timing starts per request
- success responses emit `http_request`
- failures emit `http_error`
- when enabled, client logs are accepted on the configured ingestion path

## What auto-logged requests look like

With automatic request logging enabled, Blyp emits terminal output like:

```text
[INFO]  GET  /health        200  2ms
[INFO]  POST /checkout      200  143ms
[INFO]  GET  /users/42      404  8ms
[ERROR] POST /payments      500  1203ms
```

Fields included automatically: method, path, status code, and duration.

**In production (NDJSON):**

```json
{"level":"info","time":1710000000000,"msg":"GET /health","type":"http_request","method":"GET","url":"/health","statusCode":200,"responseTime":2}
{"level":"info","time":1710000000001,"msg":"POST /checkout","type":"http_request","method":"POST","url":"/checkout","statusCode":200,"responseTime":143}
```

## Relevant types

```ts
import type {
  ElysiaLoggerConfig,
  ElysiaContext,
  ResolveCtx,
} from "@blyp/core/elysia";
```

## Sitemap

See the full [sitemap](/sitemap.md) for all pages.
Docs-scoped sitemap: [/docs/sitemap.md](/docs/sitemap.md).
Well-known sitemap: [/.well-known/sitemap.md](/.well-known/sitemap.md).