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// This is a helper module to lazily import the google APIs for the GKE cluster
// integration without introducing an indirect global dependency on an
// initialized window.gapi object.
export default () => {
if (window.gapiPromise === undefined) {
// first time loading the module
window.gapiPromise = new Promise((resolve, reject) => {
// this callback is set as a query param to script.src URL
window.onGapiLoad = () => {
resolve(window.gapi);
};
const script = document.createElement('script');
// do not use script.onload, because gapi continues to load after the initial script load
script.type = 'text/javascript';
script.async = true;
script.src = 'https://apis.google.com/js/api.js?onload=onGapiLoad';
script.onerror = reject;
document.head.appendChild(script);
});
}
return window.gapiPromise;
};
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