Supabase Edge Function + Extism

index.ts

import createPlugin from 'https://raw.githubusercontent.com/extism/js-sdk/main/src/mod.ts';

// This could be done inside the server handler too -- but we'll just load one plugin for the exmple
const plugin = await createPlugin(
    'https://github.com/extism/plugins/releases/latest/download/count_vowels.wasm',
    { useWasi: true }
);

// call this server with a request like: 
// curl -X POST -d '{"input": "this is a test"}' localhost:8000

Deno.serve(async (req) => {
  const { input } = await req.json()

  // call the plugin's "count_vowels" export function, passing it the `input` fromt the JSON
  const out = await plugin.call("count_vowels", input)

  return new Response(JSON.stringify(out.json()), { headers: { 'Content-Type': 'application/json' } })
})