app/vendor/trezor/content-script.js


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/*
Passing messages from background script to popup
*/

let port = chrome.runtime.connect({ name: 'trezor-connect' });
port.onMessage.addListener(message => {
    window.postMessage(message, window.location.origin);
});
/*
Passing messages from popup to background script
*/

window.addEventListener('message', event => {
    if (port && event.source === window && event.data) {
        port.postMessage(event.data);
    }
});