varsCloudflare Workers
Using vars with Cloudflare Workers — env bindings and the getVars pattern.
Setup
Generate a Workers-compatible module:
vars gen config.vars --platform cloudflareThis generates a getVars(env) function instead of reading from process.env.
Usage
import { getVars } from '#vars'
import { Hono } from 'hono'
const app = new Hono()
app.get('/', (c) => {
const vars = getVars(c.env)
return c.json({ app: vars.APP_NAME })
})
export default appFor vanilla Workers:
import { getVars } from '#vars'
export default {
async fetch(request: Request, env: Record<string, string>) {
const vars = getVars(env)
return new Response(vars.APP_NAME)
}
}Deploying
Export your vars and set them in wrangler:
vars export --env prod --format jsonCopy the values to wrangler.toml or set them via the Cloudflare dashboard.
Example config.vars
env(dev, prod)
public APP_NAME = "worker-api"
API_SECRET : z.string().min(16) {
dev = "worker-dev-secret-val"
prod = "worker-prod-secret-val"
}
DATABASE_URL : z.string().url() {
dev = "postgres://localhost/worker_dev"
prod = "postgres://prod.db/worker_prod"
}Note: Workers don't use PORT — remove it from your config for Workers projects.