import type { WorkflowToolRunOutcomeMessage } from "#execution/tools/workflow/messages.js";
import { type TaskCommand, type TaskView } from "#tasks/types.js";
export type TaskTransitionResult = {
    readonly action: "accepted";
    readonly view: TaskView;
} | {
    readonly action: "noop";
    readonly view: TaskView;
} | {
    readonly action: "rejected";
    readonly view: TaskView;
    readonly reason: string;
};
/** Pure transition function for the background invocation view. */
export declare function applyTaskTransition(view: TaskView, command: TaskCommand | ({
    readonly kind: "outcome";
} & WorkflowToolRunOutcomeMessage)): TaskTransitionResult;