import type { Date } from "@softwareventures/date";
import type { ProjectSource } from "../project/project.js";
import type { ReadJsonFailureReason } from "../project/read-json.js";
import type { Result } from "../result/result.js";
import type { ReadYamlFailureReason } from "../project/read-yaml.js";
import type { NodeVersions } from "./node-versions.js";
export type ReadNodeVersionsResult = Result<ReadNodeVersionsFailureReason, NodeVersions>;
export type ReadNodeVersionsFailureReason = ReadJsonFailureReason | ReadYamlFailureReason;
export declare function readNodeVersions(project: ProjectSource, today: Date): Promise<ReadNodeVersionsResult>;