relysjs

library1.21.76jsnpmunverified

relysjs is a reactive web app server focused on multi-page applications (MPAs). Current stable version is 1.21.76. It integrates Bun, Elysia, ESBuild, rmemo, and ctx-core to provide a simple server route and browser build API. Release cadence is frequent with regular updates. Differentiators include native Bun support, reactive server-side rendering, and a unified server + build pipeline with ESBuild. It simplifies MPA development by combining routing, bundling, and reactivity in a single coherent framework.

web-framework

npm install relysjs

github ↗package ↗

INSTALL

IMPORT

SIG · RELYSJS

relysjs

web-frameworkjavascriptv1.21.76

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

relysjs

✓ import relysjs from 'relysjs'

✗ const relysjs = require('relysjs')

ESM-only package; require will fail.

Route

✓ import { Route } from 'relysjs'

✗ import Route from 'relysjs'

Named export; do not use default import.

buildLib

✓ import { buildLib } from 'relysjs/server'

✗ import { buildLib } from 'relysjs'

Server-specific utilities are exported from subpath 'relysjs/server'.

Creates a minimal MPA server with a single route and ESBuild client bundling config.

import relysjs from 'relysjs'; export default relysjs({ routes: [ { path: '/', handler: async () => { return `<html><body><h1>Hello, relysjs!</h1></body></html>`; } } ], build: { entryPoints: ['./client.js'], outdir: './public' } }); // Run with: bun run relysjs.config.ts

Debug

Known issues

breakingDrop support for Node.js < 20; requires Bun runtime.

fix

Use Bun v1.0+ as your JavaScript runtime.

affects: >=1.0.0

deprecatedThe `serve` property is deprecated; use `routes` instead.

fix

Replace `serve` with `routes` in config.

affects: >=1.10.0

gotchaAll imports must be ESM; require() will throw.

fix

Use import syntax or set type: module in package.json.

affects: >=1.0.0

Errors

Common errors & fixes

Error: Cannot find module 'esbuild'

esbuild is not installed as a peer dependency.

fix

Install esbuild: bun add esbuild

TypeError: relysjs is not a function

Using incorrect import form (commonjs require).

fix

Use ESM import: import relysjs from 'relysjs'

Error: 'buildLib' is not exported from 'relysjs'

Importing from the wrong path.

fix

Import from 'relysjs/server' instead.

Upgrade

Version history

1.21.76latest on npm

Audit

Dependencies

esbuildrequiredused for bundling server and browser code

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/relysjs/relysjs ↗

packagehttps://www.npmjs.com/package/relysjs ↗