elysiajs.com
Open in
urlscan Pro
2606:4700:3033::ac43:c105
Public Scan
Submitted URL: http://elysiajs.com/
Effective URL: https://elysiajs.com/
Submission: On January 07 via api from US — Scanned from DE
Effective URL: https://elysiajs.com/
Submission: On January 07 via api from US — Scanned from DE
Form analysis 1 forms found in the DOM
<form class="input font-medium !bg-gray-100 dark:!bg-slate-700"><span class="text-gray-400 dark:text-gray-300">localhost</span><input class="absolute" type="text" value="/hello"></form>Text Content
Skip to content
ElysiaJS
SearchK
Main NavigationQuick StartPluginsBlog
GitHubTwitterDiscord
Appearance
GitHubTwitterDiscord
ELYSIAJS
ERGONOMIC FRAMEWORK FOR HUMANS
TYPESCRIPT WITH END-TO-END TYPE SAFETY, UNIFIED TYPE SYSTEM AND OUTSTANDING
DEVELOPER EXPERIENCE. SUPERCHARGED BY BUN.
Get Started
bun create elysia app
See why developers love Elysia
21X FASTER THAN EXPRESS
Supercharged by Bun runtime, Static Code Analysis, and Dynamic Code Injection
Being one of the top-performing TypeScript frameworks. Comparable to Go and
Rust.
1. Elysia Bun
2,454,631 req/s
2. Warp Rust
1,439,141
3. Swoole PHP
1,035,418
4. Echo Go
684,368
5. Gin Go
676,019
6. Chi Go
609,492
7. FastAPI PyPy
448,130
8. Fastify Node
415,600
9. Express Node
113,117
Measure in requests/second. Result from official TechEmpower Benchmark Round 22
(2023-10-17) in PlainText.
MADE FOR HUMANS
FOCUS ON PRODUCTIVITY ++
If you found yourself writing code for the framework, then there's something
wrong with the framework.
That's why Elysia invests time to experiment with design decisions to craft the
most ergonomic way possible for everyone
From built-in strict-type validation to a unified type system, and documentation
generation, making an ideal framework for building servers with TypeScript.
import { Elysia } from 'elysia'
new Elysia()
.get('/', () => 'Hello World')
.get('/json', () => ({
hello: 'world'
}))
.listen(3000)
JUST FUNCTION
No need for an additional method, just return the value to send data back to the
client.
Whether it's a regular string, or complex JSON, just return the value and Elysia
will handle the rest
import { Elysia, t } from 'elysia'
new Elysia()
.post(
'/profile',
({ body }) => body,
{
body: t.Object({
username: t.String()
})
}
)
.listen(3000)
TYPE SAFETY
Powered by TypeBox, Elysia enforces type-strict validation to ensure type
integrity by default
Elysia infers types to TypeScript automatically to create unified type system
like statically typed language
import { Elysia, t } from 'elysia'
import { swagger } from '@elysiajs/swagger'
import { users, feed } from './controllers'
new Elysia()
.use(swagger())
.use(users)
.use(feed)
.listen(3000)
OPENAPI / SWAGGER
Elysia generates OpenAPI 3.0 specs automatically to integrate with various tools
across multiple languages
Thanks to OpenAPI compliance, Elysia can generate Swagger in one line with the
Swagger plugin.
END–TO-END TYPE SAFETY
Synchronize types across all applications.
Move fast and break nothing like tRPC.
See how it works
// server.ts
import { Elysia, t } from 'elysia'
const app = new Elysia()
.patch(
'/user/age',
({ body }) => signIn(body),
{
body: t.Object({
name: t.String(),
age: t.Number()
})
}
)
.listen(80)
export type App = typeof app
// client.ts
import { edenTreaty } from '@elysiajs/eden'
import type { App } from 'server'
const eden = edenTreaty<App>('http://localhost')
await eden.user.age.patch({
name: 'saltyaom',
age: '21'
})
Type 'string' is not assignable to type 'number'
IT WORKS WITH THAT
Being one of the most popular choices for a Bun web framework, likely there is a
plugin for what you want.
If the plugin you need is not there, it's easy to create one and share it with
the community.
Explore plugins
1. GraphQL Yoga
2. Swagger
3. tRPC
4. Vite
5. JWT
6. Web Socket
7. Clerk
8. Lucia Auth
9. Logger
TRY IT OUT
Being WinterCG compliant, Elysia can run in your browser!
Edit the code and see live update immediately.
const app = new Elysia()
.get('/', () => 'Hello!')
// Try edit this line
.get('/hello', () => 'Hello from Elysia!')
.listen(80)
export default app
localhost
Hello from Elysia!
CAN'T FIND WHAT YOU'RE LOOKING FOR?
JOIN THE COMMUNITY
Elysia is one of the biggest communities for Bun first web frameworks.
You can ask your questions / propose a new feature / file a bug with our
community and mainters.
START IN MINUTES
SCAFFOLD YOUR PROJECT, AND RUN SERVER IN NO TIME
bun create elysia app
Introduction At glance
Built with 💖 dear Elysia