import { type PackageGraphSource, type PackageGraphSourceDigest } from "../schema.js";
export type GitHubSkillSourceFailureReason = "unsupported-source" | "source-commit-mismatch";
export type GitHubSkillSourceResult = {
    success: true;
    source: PackageGraphSource;
    sourceDigest: PackageGraphSourceDigest & {
        algorithm: "git-sha1";
    };
} | {
    success: false;
    reason: GitHubSkillSourceFailureReason;
};
/** Normalize the exact two-segment GitHub repository identity used by trust policy. */
export declare function normalizeGitHubRepository(repository: string): string | undefined;
/** Parse the anchored approval form `owner/repo@<lowercase full Git SHA>`. */
export declare function parseGitHubSkillSource(source: string, commit: string): GitHubSkillSourceResult;