/**
 * QuickLook PPTX Linter — detect compatibility issues before they surprise users.
 *
 * Parses a PPTX and checks every shape, text run, table, and fill against
 * known OfficeImport quirks. No rendering required — just parse and check.
 *
 * Each issue carries a typed `fix` object with machine-readable remediation
 * data so downstream tools (like pptx-fix) can apply transforms without
 * re-detecting the problem.
 */
export type Severity = "error" | "warn" | "info";
export type RuleId = "unsupported-geometry" | "opaque-pdf-block" | "gradient-flattened" | "font-substitution" | "table-style-unresolved" | "group-as-pdf" | "chart-no-fallback" | "text-inscription-shift" | "rotation-forces-pdf" | "geometry-forces-pdf" | "vertical-text" | "embedded-font" | "text-overflow" | "text-overlap";
/** Machine-readable remediation data — one variant per fix strategy. */
export type LintFix = {
    action: "replace-geometry";
    current: string;
    suggested: string;
} | {
    action: "strip-effects";
} | {
    action: "reduce-stops";
    firstColor: string;
    lastColor: string;
    averageColor: string;
    angle?: number;
} | {
    action: "replace-font";
    from: string;
    macTarget: string;
    widthDelta: number;
    alternatives: Array<{
        font: string;
        widthDelta: number;
    }>;
} | {
    action: "inline-borders";
    tableStyleId: string;
} | {
    action: "add-fallback-image";
} | {
    action: "ungroup";
    childCount: number;
    containsPictures: boolean;
} | {
    action: "strip-embedded-fonts";
    fonts: Array<{
        name: string;
        replacement?: string;
    }>;
};
export interface LintIssue {
    rule: RuleId;
    severity: Severity;
    slide: number;
    element?: string;
    message: string;
    suggestion?: string;
    fix?: LintFix;
}
export interface LintResult {
    issues: LintIssue[];
    summary: {
        errors: number;
        warnings: number;
        info: number;
        slides: number;
    };
}
/** Maps commonly-used unsupported OOXML presets to visually-closest supported alternative. */
export declare const GEOMETRY_FALLBACKS: Record<string, string>;
export declare function lint(pptxBuffer: Buffer): Promise<LintResult>;
export declare function formatIssues(result: LintResult): string;