frida-node/examples/ping_pong.ts

import frida from "frida";

const processName = process.argv[2];

const source = `
recv('poke', pokeMessage => {
  send('pokeBack');
});
`;

async function main() {
    const session = await frida.attach(processName);

    const script = await session.createScript(source);
    script.message.connect(message => {
        console.log("[*] Message:", message);
        script.unload();
    });
    await script.load();
    console.log("[*] Script loaded");

    script.post({ type: "poke" });
}

main()
    .catch(e => {
        console.error(e);
    });