/**
 * Whether a package other than the running one is installed and takes over on
 * the next bridge reload (`restartApp()`, an install-mode lifecycle trigger, or
 * a cold start). Changes at runtime: `false` at boot, `true` once `sync()` /
 * `installUpdate()` lands a newer package in the same process.
 *
 * Deliberately a standalone call rather than a field on
 * `getRunningBundleUpdateMetadata()`'s result: that call returns `null` while
 * the embedded bundle runs, which is exactly when a fresh install receives its
 * first OTA and needs this answer.
 *
 * A staged embedded revert is not reported. Reverting clears the pending slot
 * instead of filling it, so this stays `false` even though the next reload
 * switches back to the embedded bundle.
 */
export declare function isNextVersionReady(): Promise<boolean>;
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