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The modern interception proxy you've been waiting for.

Meteor is a web proxy powered by service workers that intercepts HTTP requests and routes them through a Wisp server using bare-mux.

Meteor is a client-side JavaScript library. You can install it in your application in one of two ways:

1. Hosting manually

Build Meteor's scripts by first cloning the repository, installing packages (pnpm install), running pnpm build and copy the files in the dist/ folder into a meteor folder in your application's folder.

2. Serving a static path with a backend framework

meteorPath is exported from the meteorproxy NPM package, which resolves to a path in node_modules of built Meteor scripts. You can use this however you serve static directories in your backend framework.

Express:

import express from 'express'
import { meteorPath } from 'meteorproxy'

const app = express()
app.use("/meteor/", express.static(meteorPath)

Fastify:

import Fastify from 'fastify'
import fastifyStatic from '@fastify/static'
import { meteorPath } from 'meteorproxy'

Fastify()
  .register(fastifyStatic, {
    root: meteorPath,
    prefix: '/meteor/'
  })

You can use this path with the vite-plugin-static-copy Vite plugin in your Vite (or Vite-powered) app to copy Meteor scripts into your assets directory. Install vite-plugin-static-copy with your favorite package manager and use the path in the plugin's configuration.

import { defineConfig } from 'vite'
import { meteorPath } from 'meteorproxy'
import { viteStaticCopy } from 'vite-plugin-static-copy'

export default defineConfig({
  plugins: [
    // ...
    viteStaticCopy({
      targets: [
        {
          src: `${meteorPath}/meteor.*`.replace(/\\/g, "/"),
          dest: "meteor",
          overwrite: false,
        },
      ],
    })
  ]
})

Once you have the scripts served, register your service worker and set your transport on your frontend.

if ('serviceWorker' in navigator) {
    const registration = await navigator.serviceWorker.register('/sw.js')
    let connection = new BareMux.BareMuxConnection("/baremux/worker.js")
    await connection.setTransport(
      "/epoxy/index.mjs", // replace with your transport
      [{
        wisp: `wss://wisp-server-here.com`, // replace with the url of your wisp server
      }]
    )
  })
}

// After a button click or other event:
iframe.src = self.$meteor.util.formatUrl("https://google.com"") // replace with a chosen url

More in-depth usage and configuration will be coming soon in a Wiki.

Running pnpm demo will serve a UI to test Meteor, along with a dev server that watches for changes in the source code and re-builds accordingly.