export declare const AUTHORIZATION_ASSIGNMENT_VERSION_CONFLICT = "AUTHORIZATION_ASSIGNMENT_VERSION_CONFLICT";
export type AssignmentConflictDecision = {
    kind: "rebase";
    currentRoleIds: readonly string[];
} | {
    kind: "abort";
    currentRoleIds: readonly string[];
} | {
    kind: "missing";
};
export interface PlatformAssignmentEdit {
    readonly baseRoleIds: readonly string[];
    readonly expectedVersion: number;
    readonly selectedRoleIds: readonly string[];
    readonly userId: string;
}
export declare function sortedRoleIds(ids: readonly string[]): string[];
export declare function sameRoleSet(left: readonly string[], right: readonly string[]): boolean;
export declare function createPlatformAssignmentEdit(input: {
    expectedVersion: number;
    roleIds: readonly string[];
    userId: string;
}): PlatformAssignmentEdit;
export declare function decideAssignmentConflictAction(input: {
    baseRoleIds: readonly string[];
    currentRoleIds: readonly string[] | undefined;
}): AssignmentConflictDecision;
export declare function isAuthorizationAssignmentConflictError(error: unknown): boolean;