import type { BlockquoteConfig, BodyTextConfig, EmphasisStyle, PostextConfig, ResolvedBlockquoteConfig, ResolvedBodyTextConfig, ResolvedKashidaConfig, HyphenationConfig, LocaleTag, TashkilMode } from '../types.js';
export declare const DEFAULT_HYPHENATION_CONFIG: ResolvedBodyTextConfig['hyphenation'];
/**
 * Whether a paragraph keeps `widowMinLines` lines at the foot of a column
 * when `config` does not set `bodyText.avoidWidows` itself. Off on a
 * character grid (`cjk.grid`, #717): the grid counts the lines of a page,
 * and a paragraph moved on whole leaves the page a line short. clreq
 * §7.1.2 and JLReq §3.5.4 have no rule for a paragraph's first line at
 * the foot of a page.
 */
export declare function avoidWidowsByDefault(config: PostextConfig | undefined): boolean;
/**
 * Whether a paragraph keeps `orphanMinLines` lines at the head of the next
 * column when `config` does not set `bodyText.avoidOrphans` itself. Off on
 * a character grid in the Japan region (#717): JLReq §3.5.4 counts the
 * characters of a paragraph's last line, never its lines at a page break.
 * A Chinese grid keeps the rule: 孤行, the last line of a paragraph alone
 * at the head of a page, is the one clreq §7.1.2 names. The region is
 * `cjk.region`, or under `'auto'` the one of the document language as
 * `resolveAllConfig` reads it (`locale`, else the hyphenation locale).
 */
export declare function avoidOrphansByDefault(config: PostextConfig | undefined): boolean;
/** Blockquotes as postext 1.4 set them: grey, italic, the body's
 *  first-line indent, no side indent. */
export declare const DEFAULT_BLOCKQUOTE_CONFIG: ResolvedBlockquoteConfig;
/** A `shortListMaxItems` as written (#749): a whole number of items, one
 *  or more, else `undefined`. */
export declare function shortListMaxItemsOf(value: unknown): number | undefined;
export declare const DEFAULT_BODY_TEXT_CONFIG: ResolvedBodyTextConfig;
export declare function hyphenationEqual(a: HyphenationConfig | undefined, b: HyphenationConfig | undefined): boolean;
/** Whether `value` names an emphasis style. */
export declare function isEmphasisStyle(value: unknown): value is EmphasisStyle;
/** Whether `value` names a tashkīl mode. */
export declare function isTashkilMode(value: unknown): value is TashkilMode;
/** How `*…*` is set by default in a document in `locale`: in bold when
 *  it is written in Arabic script, in italics otherwise (#376). */
export declare function defaultEmphasisFor(locale: unknown): EmphasisStyle;
/** `bodyText.emphasis` resolved: `'auto'`, unset or an unknown value
 *  follow the language. */
export declare function resolveEmphasis(value: unknown, locale: unknown): EmphasisStyle;
/** The defaults of kashida justification once it is on (see
 *  `BodyTextConfig.kashida`). */
export declare const DEFAULT_KASHIDA_CONFIG: ResolvedKashidaConfig;
/** Whether `tag` names a language written in the Arabic script (`ar`,
 *  `fa`, `ur`, `ps`, `ks-Arab`…): its justified text takes kashidas unless
 *  the config says `kashida: 'none'`. */
export declare function isArabicScriptLanguage(tag: unknown): boolean;
/** Kashida justification of a resolved body text, or `undefined` when it
 *  is off. */
export declare function resolvedKashida(bodyText: Pick<ResolvedBodyTextConfig, 'kashida' | 'kashidaPatterns' | 'kashidaPerWord' | 'kashidaMaxLength'>): ResolvedKashidaConfig | undefined;
/** A blockquote style in full: unset fields keep postext 1.4's look (see
 *  {@link DEFAULT_BLOCKQUOTE_CONFIG}); an unset `firstLineIndent` stays
 *  unset, the body's then applying. In a document written in Arabic
 *  script (`locale`) a quotation is upright by default: its type has no
 *  italics (#376). */
export declare function resolveBlockquoteConfig(partial?: BlockquoteConfig, locale?: unknown): ResolvedBlockquoteConfig;
/** `blockquote` without the fields that hold their default (in a document
 *  in `locale`); undefined when none is left. */
export declare function stripBlockquoteDefaults(blockquote?: BlockquoteConfig, locale?: unknown): BlockquoteConfig | undefined;
export declare function resolveBodyTextConfig(partial?: BodyTextConfig, documentLocale?: LocaleTag): ResolvedBodyTextConfig;
/** `bodyText` without the fields that hold their default. `documentLocale`
 *  (the config's `locale`) matters to hyphenation only: in a Chinese,
 *  Japanese or Korean document its default is off, and the patterns of a
 *  document that names its language are that language's. `avoidWidowsOn`
 *  and `avoidOrphansOn` are the document's defaults for the two break
 *  rules (`avoidWidowsByDefault(config)`, `avoidOrphansByDefault(config)`,
 *  #717): each rule is dropped when it restates its own, so `true` is
 *  kept on a character grid where the rule is off, and `false` dropped
 *  there. */
export declare function stripBodyTextDefaults(bodyText?: BodyTextConfig, documentLocale?: LocaleTag, avoidWidowsOn?: boolean, avoidOrphansOn?: boolean): BodyTextConfig | undefined;
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