Display a system notification in macOS from a Node.js script.

nodejs-show-notification-on-macos.js

const { exec } = require("child_process");

exec(`osascript -e 'display notification "Hello World!"'`, (error, stdout, stderr) => {
    if (error) {
        console.log(`error: ${error.message}`);
        return;
    }
    if (stderr) {
        console.log(`stderr: ${stderr}`);
        return;
    }
    console.log(`stdout: ${stdout}`);
});