/**
 * manifest changelog <from-ref> [to-ref]
 *
 * Generates a human-readable Markdown changelog from IR diffs between two
 * Git refs (tags, branches, SHAs). Compiles .manifest sources at each ref,
 * diffs the resulting IR, classifies changes, and emits Markdown formatted
 * for GitHub Releases and Keep a Changelog conventions.
 *
 * Usage:
 *   manifest changelog v1.0.0 v1.1.0
 *   manifest changelog v1.0.0              # compares to HEAD
 *   manifest changelog v1.0.0 --json       # structured JSON output
 *   manifest changelog v1.0.0 -o CHANGELOG.md
 */
export interface ChangelogOptions {
    /** Glob pattern for .manifest sources (default: **\/*.manifest) */
    source?: string;
    /** Output file path (writes Markdown or JSON depending on --json) */
    output?: string;
    /** Emit structured JSON instead of Markdown */
    json?: boolean;
    /** Custom title for the changelog heading */
    title?: string;
    /** Preview -o write without touching the filesystem. */
    dryRun?: boolean;
}
export declare function changelogCommand(fromRef: string, toRef: string, options?: ChangelogOptions): Promise<void>;
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