usage.ts

import { createRouter } from "./src/index.ts"
import type { Res, Req, ResolvedRoute } from "./src/types.ts"

type Article = {
	slug: string
	title: string
	text: string
}

const articles = new Map<string, Article>()

type Result = {
	status: number
	body?: object
	text?: string
}

// Create router with routes
const router = createRouter<Result>({
	routes: [
		{
			path: "/articles/:slug",
			handler: (res) => {
				const params = res.route.params as { slug: string }
				const a = articles.get(params.slug)
				return { status: 200, body: a }
			},
		},
		{
			path: "/articles/new",
			method: "POST",
			handler: (res) => {
				const data = res.req.data as Article
				articles.set(data.slug, data)
				return { status: 200, text: "ok" }
			},
		},
		{
			path: "*",
			name: "not-found",
			handler: (_res) => {
				return { status: 404, text: "not found" }
			},
		},
	],
})

// Create request
const req: Req = {
	path: "/articles/new",
	method: "POST",
	data: {
		slug: "slug-1",
		title: "Article 1",
		text: "Lorem ipsum dolor sit amet",
	},
}

// use router to resolve route
const route = router.resolve(req)

// prepare object to pass to handler
const makeRes = <T>(req: Req, route: ResolvedRoute<T>) => {
	const res: Res<T> = {
		req,
		route,
	}

	return res
}

// handle route
route.handler(makeRes(req, route))

// new request
const req2: Req = { path: "/articles/slug-1" }

const route2 = router.resolve(req2)

const result = route2.handler(makeRes(req2, route2))

const doSomethingWithResult = ({ status, body, text }: Result) => {
	console.log(status, body, text)
	// or appRoot.innerHTML = result
	// or node res.writeHead(result.status)
	// res.end(JSON.stringify(result.body))
	// or do anything else
}

doSomethingWithResult(result)