/**
 * DOCX renderer features.
 *
 * A feature is a capability a *backend* must have, not an authoring concept.
 * The compiler records one requirement per IR node that needs one; a renderer
 * declares the set it can satisfy. Anything required but not declared fails
 * before rendering, with the IR path attached.
 *
 * The boundaries are drawn where backends actually differ. `toc` and
 * `cached-toc` are separate because writing the field is easy and baking its
 * entries is not; `footnotes` and `endnotes` are separate because a backend can
 * plausibly have one and not the other.
 */
export declare const DOCX_FEATURES: readonly ["paragraphs", "styles", "numbering", "sections", "columns", "headers-footers", "tables", "table-merged-cells", "floating-tables", "images", "floating-images", "svg-images", "text-frames", "text-boxes", "drawing-groups", "charts", "toc", "cached-toc", "fields", "cached-fields", "hyperlinks", "bookmarks", "cross-references", "comments", "comment-threads", "footnotes", "endnotes", "revisions", "breaks", "shading", "borders", "tab-stops", "proofing-language", "custom-properties", "rtl"];
export type DocxFeature = (typeof DOCX_FEATURES)[number];
/** Every feature, for an adapter that claims the full surface. */
export declare const ALL_DOCX_FEATURES: ReadonlySet<DocxFeature>;
export declare function isDocxFeature(value: string): value is DocxFeature;
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