npm

import { windowOpenPromise } from "@vangware/window-open-promise";

const windowOpen = windowOpenPromise(window);

windowOpen({
    url: "https://example.com", // URL is not required, you can open a blank window
    top: 10,
    left: 10
})
    .then(newWindow => {
        newWindow.console.log("This will log in the new window.");
        newWindow.addEventListener("beforeunload", _event => {
            console.log("This will log when the new window is closed.");
        });
    })
    .catch(_error => {
        console.error("This will log if the new window can't be opened.");
    });

import { windowOpenPromise } from "https://cdn.skypack.dev/@vangware/window-open-promise?dts";

const windowOpen = windowOpenPromise(window);

try {
    const newWindow = await windowOpen({
        url: "https://example.com", // URL is not required, you can open a blank window
        top: 10,
        left: 10
    })
    newWindow.console.log("This will log in the new window.");
    newWindow.addEventListener("beforeunload", _event => {
      console.log("This will log when the new window is closed.");
    });
} catch (_error) {
    console.error("This will log if the new window can't be opened.");
}