/**
 * @file
 *
 * Pure helpers for locating and describing an AVD's saved boot snapshot.
 *
 * Only the opt-in `shouldReuseEmulatorSnapshot` path resumes one, and even then
 * its age is worth a log line: a snapshot is the one input to a run that no gate
 * inspects, and the failure a rotten one produces — a guest that serves adb,
 * accepts a uiautomator2 session and then drops `offline` about half a minute
 * later — reads as a code regression rather than as stale state. `emulator
 * -avd … -no-snapshot-load` (the default) makes the question moot; when the
 * caller has deliberately traded that away, *"resuming snapshot saved <date>"*
 * is what keeps the trade visible in the transcript.
 *
 * Kept separate from the integration-only `transport-factory` so the path
 * derivation and the wording stay unit-testable — the factory itself does the
 * `stat`.
 */
/**
 * Parameters for {@link buildAvdSnapshotDirectoryCandidates}.
 */
export interface BuildAvdSnapshotDirectoryCandidatesParams {
    /**
    The Android Virtual Device name.
     */
    readonly avdName: string;
    /**
    The process environment, read for the Android SDK's AVD-home overrides.
     */
    readonly environment: Readonly<Record<string, string | undefined>>;
    /**
    The user's home directory, the base of the default AVD home.
     */
    readonly homeDirectory: string;
}
/**
 * Parameters for {@link buildSnapshotAgeMessage}.
 */
export interface BuildSnapshotAgeMessageParams {
    /**
    The Android Virtual Device name.
     */
    readonly avdName: string;
    /**
    When the snapshot was last written, or `undefined` when none was found.
     */
    readonly savedAt?: Date | undefined;
}
/**
 * Builds the directories the AVD's boot snapshot could live in, most specific
 * first.
 *
 * The lookup mirrors the emulator's own: `ANDROID_AVD_HOME` wins outright, then
 * `.android/avd` under `ANDROID_SDK_HOME`, then under the user's home. Returning
 * candidates rather than one path keeps the `stat` — and the decision that a
 * miss is not an error — in the caller.
 *
 * @param params - The AVD name, the environment, and the home directory.
 * @returns The candidate snapshot directories, most specific first.
 */
export declare function buildAvdSnapshotDirectoryCandidates(params: BuildAvdSnapshotDirectoryCandidatesParams): string[];
/**
 * Builds the line logged when a run has opted into resuming a snapshot.
 *
 * @param params - The AVD name and the snapshot's save time, if it was found.
 * @returns The log line.
 */
export declare function buildSnapshotAgeMessage(params: BuildSnapshotAgeMessageParams): string;