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vite-plugin-agent-tail

Vite plugin for agent-tail — captures browser console.log, console.warn, console.error, unhandled errors, and unhandled promise rejections to log files on disk during development.

Tip: Install the umbrella agent-tail package to get the CLI, Vite plugin, and Next.js plugin in one install: npm install -D agent-tail

Install

npm install -D agent-tail

Setup

// vite.config.ts
import { defineConfig } from "vite"
import { agentTail } from "agent-tail/vite"

export default defineConfig({
    plugins: [agentTail()],
})

Then in another terminal:

tail -f tmp/logs/latest/browser.log
# or
agent-tail tail browser -f

How it works

The plugin injects a small script into your HTML that intercepts console methods, batches the output, and sends it to the dev server via sendBeacon. Logs are written to a timestamped session directory with a latest symlink for easy access.

Pair with the CLI

Use both the plugin and the CLI to get browser console logs and server output in one place:

agent-tail run 'fe: npm run dev' 'api: uvicorn main:app'

Docs

Full documentation and configuration options at agent-tail.vercel.app

License

MIT