import type { Occasion, OccasionSubject } from './types.js';
/** True when a segment, with or without its `for`, declares the owner. */
export declare function isSelfAttribution(value: string): boolean;
/**
 * The subject a possessive title names, or empty.
 *
 * `Jordan's birthday` → `Jordan`. `Natalie Sons's birthday` → `Natalie Sons`.
 * `Our anniversary` → empty, because it names no one; `birthday` → empty.
 *
 * Deliberately only the possessive. A title is not a sentence to be mined for
 * names, the one place a title reliably names its subject is in front of an
 * apostrophe-s, and reaching further would be the guessing this module exists
 * to avoid.
 */
export declare function possessiveSubject(title: string): string;
/**
 * Every way the owner refers to themselves, normalised, from their own file.
 *
 * A declared name contributes itself AND its first word, so `identity.name` of
 * "Jordan Reyes" recognises a line written as "Jordan's birthday". The first word
 * only, the last name alone is a family name, and a family name matching would
 * silence every relative sharing it.
 */
export declare function ownerAliasSet(declaredNames: readonly string[]): ReadonlySet<string>;
/** What one occasion's attribution resolves to, given the owner's declared names. */
export declare function resolveOccasionSubject(occasion: Pick<Occasion, 'title' | 'person' | 'selfDeclared'>, declaredNames: readonly string[]): OccasionSubject;
/**
 * Whether this occasion may ever be PUSHED at the owner.
 *
 * One rule, and it is narrow on purpose: something about the owner that they
 * only have to remember is something they already know. Their own birthday,
 * their own anniversary of anything. They do not need a message about it,
 * least of all an hourly one, so nothing is sent, and it stays visible to
 * anything that ASKS what is coming up.
 *
 * The narrowness is the load-bearing part. An occasion about the owner that
 * wants an ACTION, `Renew passport · 2026-11-02 · once · gift-giving` is the
 * shape, and the kind is the thing that says an action is wanted, is not
 * covered, and keeps the ordinary two-boundary cadence. They do not know when
 * their passport expires. They do know when they were born.
 */
export declare function pushableSubject(occasion: Pick<Occasion, 'subject' | 'kind'>): boolean;
/** Why an occasion is not pushed, in words a surface can show the owner. */
export declare function selfOccasionReason(occasion: Pick<Occasion, 'title'>): string;
//# sourceMappingURL=subject.d.ts.map