Plugin

Every Elysia instance can be plug-and-play with other instances by use method.

import { Elysia } from 'elysia'

const user = new Elysia()
	.get('/profile', 'User Profile')
	.get('/settings', 'User Settings')

new Elysia()
	.use(user) // [!code ++]
	.get('/', 'Home')
	.listen(3000)

Once applied, all routes from user instance will be available in app instance.

Plugin Config

You can also create a plugin that takes argument, and returns an Elysia instance to make a more dynamic plugin.

import { Elysia } from 'elysia'

const user = ({ log = false }) => new Elysia() // [!code ++]
	.onBeforeHandle(({ request }) => {
		if (log) console.log(request)
	})
	.get('/profile', 'User Profile')
	.get('/settings', 'User Settings')

new Elysia()
	.use(user({ log: true })) // [!code ++]
	.get('/', 'Home')
	.listen(3000)

Assignment

Let's apply the user instance to the app instance.

<template #answer>

Similar to the above example, we can use the use method to plug the user instance into the app instance.

import { Elysia } from 'elysia'

new Elysia()
	.get('/profile', 'User Profile')
	.get('/settings', 'User Settings')

const app = new Elysia()
	.use(user) // [!code ++]
	.get('/', 'Home')
	.listen(3000)