import type { CaptionStyleConfig, ColorPaletteEntry, ResolvedCaptionStyleConfig, ResolvedBodyTextConfig } from '../types.js';
/** What stands around a caption's number when the config sets nothing:
 *  "Figure 1.7. " (a no-break space, then a stop and a space) in most
 *  languages; in a Japanese document (`locale` `ja`, `ja-*`) the label and
 *  the number solid and an ideographic space before the caption text,
 *  with no stop (図1-1　東京の地図, JLReq §4.3). Chinese documents keep
 *  the Latin defaults, as before (their books set the pair by hand). */
export declare function defaultCaptionLabels(locale?: string): {
    labelNumberGap: string;
    labelSeparator: string;
};
/** Resolve a partial caption-style config. Font family, size, and colour (and
 *  thus the label colour) inherit the resolved body text when unset, so a
 *  document with no caption config renders exactly as before. The label's
 *  gap and separator follow the document language `locale` when unset
 *  ({@link defaultCaptionLabels}). */
export declare function resolveCaptionStyleConfig(partial: CaptionStyleConfig | undefined, bodyText: ResolvedBodyTextConfig, locale?: string): ResolvedCaptionStyleConfig;
/**
 * Merge a partial per-resource-type caption override over an already-resolved
 * caption style. Only the keys defined in `override` replace the base; the
 * derived defaults follow the same rules as {@link resolveCaptionStyleConfig}
 * (an overridden `color` also drives the label and note colours unless those
 * were set explicitly, an overridden `fontSize` rescales the default note
 * size). Palette references inside the override (`ColorValue.paletteId`)
 * resolve against `palette` when given; the base is assumed resolved already.
 */
export declare function mergeCaptionStyle(base: ResolvedCaptionStyleConfig, override: CaptionStyleConfig | undefined, palette?: ColorPaletteEntry[]): ResolvedCaptionStyleConfig;
/** Drop fields equal to their static default; inherited font/colour fields are
 *  kept whenever explicitly set. The label's gap and separator are compared
 *  with the defaults of the document language `locale`
 *  ({@link defaultCaptionLabels}): a no-break space kept in a Japanese
 *  document is no default there. Returns `undefined` when nothing remains. */
export declare function stripCaptionStyleDefaults(captionStyle: CaptionStyleConfig | undefined, locale?: string): CaptionStyleConfig | undefined;
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