relay-plugin-ipfs/build.js

import esbuild from 'esbuild'

esbuild.buildSync({
  entryPoints: ["src/index.ts"],
  outfile: "dist/ipfs.js",
  format: "cjs",
  bundle: true,
  platform: "node",
  define: {
    __dirname: '"./plugins/leveldown"',
  }
});