/**
 * Batch screenshot manifest parsing.
 *
 * Lives outside the CLI entry point so the validation is directly importable and
 * testable — the CLI module is a top-level IIFE and cannot be imported for a
 * unit test without running it.
 */
/** One frame in a `--batch` manifest. `url` and `output` are required. */
export interface BatchScreenshotItem {
    url: string;
    output: string;
    selector?: string;
    fullPage?: boolean;
    viewport?: string;
    hideDevbar?: boolean;
}
export interface BatchScreenshotResult {
    url: string;
    output: string;
    ok: boolean;
    width?: number;
    height?: number;
    error?: string;
}
/**
 * Parse and validate a batch manifest.
 *
 * Every field is checked up front rather than per frame, so a malformed manifest
 * fails before the first browser is touched instead of halfway through a sweep.
 * `output` in particular is required: defaulting it would make every frame write
 * to the same path, and a directory of identical frames reads downstream as "the
 * capture tool duplicated my frames" rather than "my manifest was malformed".
 */
export declare function parseBatchManifest(raw: string): BatchScreenshotItem[];
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