import { z } from "zod";
export declare const PullRequestWatchInputSchema: z.ZodObject<{
    repo: z.ZodPipe<z.ZodString, z.ZodTransform<string, string>>;
    pullRequestNumber: z.ZodNumber;
    reviewOwner: z.ZodString;
    redHeadOid: z.ZodPipe<z.ZodString, z.ZodTransform<string, string>>;
}, z.core.$strip>;
export type PullRequestWatchInput = z.infer<typeof PullRequestWatchInputSchema>;
export declare const PrwatchDeleteInputSchema: z.ZodObject<{
    repo: z.ZodPipe<z.ZodString, z.ZodTransform<string, string>>;
    pullRequestNumber: z.ZodNumber;
}, z.core.$strip>;
export type PrwatchDeleteInput = z.infer<typeof PrwatchDeleteInputSchema>;
declare const PullRequestSchema: z.ZodObject<{
    head: z.ZodObject<{
        sha: z.ZodString;
    }, z.core.$strip>;
    html_url: z.ZodString;
    merged: z.ZodDefault<z.ZodOptional<z.ZodBoolean>>;
    state: z.ZodEnum<{
        closed: "closed";
        open: "open";
    }>;
}, z.core.$strip>;
declare const ReviewSchema: z.ZodObject<{
    commit_id: z.ZodNullable<z.ZodString>;
    state: z.ZodString;
    submitted_at: z.ZodNullable<z.ZodString>;
    user: z.ZodNullable<z.ZodObject<{
        login: z.ZodString;
    }, z.core.$strip>>;
}, z.core.$strip>;
type PullRequest = z.infer<typeof PullRequestSchema>;
type Review = z.infer<typeof ReviewSchema>;
export interface PullRequestWatchSnapshot {
    readonly headOid: string;
    readonly ownerApprovedCurrentHead: boolean;
    readonly ownerReviewState: string | null;
    readonly ownerReviewSubmittedAt: string | null;
    readonly state: "open" | "closed" | "merged";
    readonly url: string;
}
interface PullRequestWatchNotificationState {
    readonly previousSnapshot: PullRequestWatchSnapshot | null;
    readonly redHeadPolls: number;
    readonly redHeadWakeSent: boolean;
}
export type PullRequestWatchWakeReason = "head_changed" | "owner_review_changed" | "red_head_stalled";
export declare function initialPullRequestWatchNotificationState(): PullRequestWatchNotificationState;
export declare function framePullRequestWatchWake(instruction: string): string;
export declare function advancePullRequestWatchNotification(input: {
    readonly redHeadOid: string;
    readonly snapshot: PullRequestWatchSnapshot;
    readonly staleAfterPolls: number;
    readonly state: PullRequestWatchNotificationState;
}): {
    readonly state: PullRequestWatchNotificationState;
    readonly wakeReason: PullRequestWatchWakeReason | null;
};
export declare function shouldRefreshPullRequestWatchToken(error: unknown): boolean;
export declare function isRetryablePullRequestWatchError(error: unknown): boolean;
export declare function pullRequestWatchSnapshot(input: {
    readonly pullRequest: PullRequest;
    readonly reviewOwner: string;
    readonly reviews: readonly Review[];
}): PullRequestWatchSnapshot;
export declare function repoFullName(repo: string): string;
export declare function readPullRequestWatchSnapshot(input: PullRequestWatchInput): Promise<PullRequestWatchSnapshot>;
export {};