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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import updateNotifier, { UpdateInfo } from 'update-notifier';
import semver from 'semver';
import { getPackageJson } from '../../utils/package.js';
export const FETCH_TIMEOUT_MS = 2000;
export interface UpdateObject {
message: string;
update: UpdateInfo;
}
export async function checkForUpdates(): Promise<UpdateObject | null> {
try {
// Skip update check when running from source (development mode)
if (process.env.DEV === 'true') {
return null;
}
const packageJson = await getPackageJson();
if (!packageJson || !packageJson.name || !packageJson.version) {
return null;
}
const notifier = updateNotifier({
pkg: {
name: packageJson.name,
version: packageJson.version,
},
// check every time
updateCheckInterval: 0,
// allow notifier to run in scripts
shouldNotifyInNpmScript: true,
});
// avoid blocking by waiting at most FETCH_TIMEOUT_MS for fetchInfo to resolve
const timeout = new Promise<null>((resolve) =>
setTimeout(resolve, FETCH_TIMEOUT_MS, null),
);
const updateInfo = await Promise.race([notifier.fetchInfo(), timeout]);
if (updateInfo && semver.gt(updateInfo.latest, updateInfo.current)) {
return {
message: `Gemini CLI update available! ${updateInfo.current} → ${updateInfo.latest}`,
update: updateInfo,
};
}
return null;
} catch (e) {
console.warn('Failed to check for updates: ' + e);
return null;
}
}
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