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+/**
+ * TypeScript schema for JSON files generated by horsegen.
+ */
+
+/**
+ * Character definitions.
+ */
+export interface Character {
+	/**
+	 * Character ID.
+	 */
+	chara_id: number;
+	/**
+	 * Regional name of the character.
+	 * E.g., Special Week for Global, or スペシャルウィーク for JP.
+	 */
+	name: string;
+}
+
+/**
+ * Precomputed character pair and trio affinity.
+ */
+export interface Affinity {
+	/**
+	 * First character in the relation.
+	 */
+	chara_a: number;
+	/**
+	 * Second character in the relation.
+	 * chara_a < chara_b is an invariant.
+	 */
+	chara_b: number;
+	/**
+	 * Third character in the relation, if it is a trio relation.
+	 * If defined, chara_b < chara_c is an invariant.
+	 */
+	chara_c?: number;
+	/**
+	 * Total base compatibility between characters in the relation.
+	 */
+	affinity: number;
+}
+
+/**
+ * Uma or character card definitions.
+ */
+export interface Uma {
+	/**
+	 * Uma ID.
+	 */
+	chara_card_id: number;
+	/**
+	 * Character ID that the Uma is a variant of.
+	 */
+	chara_id: number;
+	/**
+	 * Regional name of the Uma, comprised of the variant name and the character name.
+	 * E.g. "[Special Dreamer] Special Week".
+	 */
+	name: string;
+	/**
+	 * Regional variant name.
+	 * E.g. "[Special Dreamer]".
+	 */
+	variant: string;
+
+	sprint: AptitudeLevel;
+	mile: AptitudeLevel;
+	medium: AptitudeLevel;
+	long: AptitudeLevel;
+	front: AptitudeLevel;
+	pace: AptitudeLevel;
+	late: AptitudeLevel;
+	end: AptitudeLevel;
+	turf: AptitudeLevel;
+	dirt: AptitudeLevel;
+
+	/**
+	 * ID of the Uma's unique skill.
+	 */
+	unique: number;
+	/**
+	 * ID of the Uma's first built-in skill.
+	 */
+	skill1: number;
+	/**
+	 * ID of the Uma's second built-in skill.
+	 */
+	skill2: number;
+	/**
+	 * ID of the Uma's third built-in skill.
+	 */
+	skill3: number;
+	/**
+	 * ID of the skill unlocked at potential level 2.
+	 */
+	skill_pl2: number;
+	/**
+	 * ID of the skill unlocked at potential level 3.
+	 */
+	skill_pl3: number;
+	/**
+	 * ID of the skill unlocked at potential level 4.
+	 */
+	skill_pl4: number;
+	/**
+	 * ID of the skill unlocked at potential level 5.
+	 */
+	skill_pl5: number;
+}
+
+export type AptitudeLevel = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7;
+
+/**
+ * Race data.
+ */
+export interface Race {
+	/**
+	 * Race ID.
+	 */
+	race_id: number;
+	/**
+	 * Regional name of the race.
+	 */
+	name: string;
+	/**
+	 * Thumbnail asset ID number.
+	 */
+	thumbnail: number;
+	/**
+	 * Primary race ID.
+	 * For most races, this is the same as race_id. Some races are alternate
+	 * versions for certain careers; this holds the ID of the normal version of
+	 * the race.
+	 */
+	primary: number;
+}
+
+/**
+ * Race saddle data.
+ */
+export interface Saddle {
+	/**
+	 * Saddle ID.
+	 */
+	saddle_id: number;
+	/**
+	 * Regional name of the saddle.
+	 */
+	name: string;
+	/**
+	 * IDs of race wins required to earn the saddle.
+	 */
+	races: number[];
+	/**
+	 * Saddle type: 0 for multi-race honors, 3 for G1, 2 for G2, 1 for G3.
+	 */
+	type: 0 | 1 | 2 | 3;
+	/**
+	 * Primary saddle ID.
+	 * Respective for races.
+	 */
+	primary: number;
+}
+
+/**
+ * Scenario data.
+ */
+export interface Scenario {
+	/**
+	 * Scenario ID.
+	 */
+	scenario_id: number;
+	/**
+	 * Regional scenario name, e.g. "TS Climax".
+	 */
+	name: string;
+	/**
+	 * Regional full title, e.g. "Trackblazer: Start of the Climax".
+	 */
+	title: string;
+}
+
+/**
+ * Skill data.
+ */
+export interface Skill {
+	/**
+	 * Skill ID.
+	 */
+	skill_id: number;
+	/**
+	 * Regional skill name.
+	 */
+	name: string;
+	/**
+	 * Regional skil description.
+	 */
+	description: string;
+	/**
+	 * Skill group ID.
+	 */
+	group: number;
+	/**
+	 * Skill rarity. 3-5 are uniques for various star levels.
+	 */
+	rarity: 1 | 2 | 3 | 4 | 5;
+	/**
+	 * Upgrade position within the skill's group.
+	 * -1 is for negative (purple) skills.
+	 */
+	group_rate: 1 | 2 | 3 | -1;
+	/**
+	 * Grade value, or the amount of rating gained for having the skill with
+	 * appropriate aptitude.
+	 */
+	grade_value?: number;
+	/**
+	 * Whether the skill requires a wit check.
+	 */
+	wit_check: boolean;
+	/**
+	 * Conditions and results of skill activation.
+	 */
+	activations: [Activation] | [Activation, Activation];
+	/**
+	 * Name of the Uma which owns this skill as a unique, if applicable.
+	 */
+	unique_owner?: string;
+	/**
+	 * SP cost to purchase the skill, if applicable.
+	 */
+	sp_cost?: number;
+	/**
+	 * Skill icon ID.
+	 */
+	icon_id: number;
+}
+
+/**
+ * Conditions and results of skill activation.
+ */
+export interface Activation {
+	/**
+	 * Precondition which must be satisfied before the condition is checked.
+	 */
+	precondition?: string;
+	/**
+	 * Activation conditions.
+	 */
+	condition: string;
+	/**
+	 * Skill duration in ten thousandths of a second.
+	 * Generally undefined for activations which only affect HP.
+	 */
+	duration?: number;
+	/**
+	 * Special skill duration scaling mode.
+	 */
+	dur_scale: 1 | 2 | 3 | 4 | 5 | 7;
+	/**
+	 * Skill cooldown in ten thousandths of a second.
+	 * A value of 5000000 indicates that the cooldown is forever.
+	 * Generally undefined for passive skills.
+	 */
+	cooldown?: number;
+	/**
+	 * Results applied when the skill's conditions are met.
+	 */
+	abilities: [Ability] | [Ability, Ability] | [Ability, Ability, Ability];
+}
+
+/**
+ * Effects applied when a skill activates.
+ */
+export interface Ability {
+	/**
+	 * Race mechanic affected by the ability.
+	 */
+	type: 1 | 2 | 3 | 4 | 5 | 6 | 8 | 9 | 10 | 13 | 21 | 27 | 28 | 31 | 35;
+	/**
+	 * Special scaling type of the skill value.
+	 */
+	value_usage: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 13 | 14 | 19 | 20 | 22 | 23 | 24 | 25;
+	/**
+	 * Amount that the skill modifies the race mechanic in ten thousandths of
+	 * whatever is the appropriate unit.
+	 */
+	value: number;
+	/**
+	 * Selector for horses targeted by the ability.
+	 */
+	target: 1 | 2 | 4 | 7 | 9 | 10 | 11 | 18 | 19 | 20 | 21 | 22 | 23;
+	/**
+	 * Argument value for the ability target, when appropriate.
+	 */
+	target_value?: number;
+}
+
+/**
+ * Skill groups.
+ * Skills in a skill group replace each other when purchased.
+ * 
+ * As a special case, horsegen lists both unique skills and their inherited
+ * versions in the skill groups for both.
+ */
+export interface SkillGroup {
+	/**
+	 * Skill group ID.
+	 */
+	skill_group: number;
+	/**
+	 * Base skill in the skill group, if any.
+	 * Either a common (white) skill or an Uma's own unique.
+	 * 
+	 * Some skill groups, e.g. for G1 Averseness, have no base skill.
+	 */
+	skill1?: number;
+	/**
+	 * First upgraded version of a skill, if any.
+	 * A rare (gold) skill, double circle skill, or an inherited unique skill.
+	 */
+	skill2?: number;
+	/**
+	 * Highest upgraded version of a skill, if any.
+	 * Gold version of a skill with a double circle version.
+	 */
+	skill3?: number;
+	/**
+	 * Negative (purple) version of a skill, if any.
+	 */
+	skill_bad?: number;
+}
+
+/**
+ * Sparks, or succession factors.
+ */
+export interface Spark {
+	/**
+	 * Spark ID.
+	 */
+	spark_id: number;
+	/**
+	 * Regional spark name.
+	 */
+	name: string;
+	/**
+	 * Regional spark description.
+	 */
+	description: string;
+	/**
+	 * Spark group.
+	 * Different star levels of a given spark are different spark IDs but
+	 * share a spark group.
+	 */
+	spark_group: number;
+	/**
+	 * Spark rarity, or star level.
+	 */
+	rarity: 1 | 2 | 3;
+	/**
+	 * Spark type.
+	 * Roughly the spark color, with extra subdivisions for white sparks.
+	 */
+	type: 1 | 2 | 5 | 4 | 6 | 7 | 10 | 8 | 11 | 9 | 3;
+	/**
+	 * Possible effects applied by the spark during inspiration.
+	 * A random element is selected from this list according to unknown
+	 * distributions, then all effects in that selection are applied.
+	 */
+	effects: SparkEffect[][];
+}
+
+/**
+ * Effects that a spark can apply.
+ */
+export interface SparkEffect {
+	target: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 11 | 12 | 21 | 22 | 23 | 24 | 31 | 32 | 33 | 34 | 41 | 51 | 61 | 62 | 63 | 64 | 65;
+	value1?: number;
+	value2: number;
+}
+
+/**
+ * Lobby conversation data.
+ */
+export interface Conversation {
+	/**
+	 * Character who owns the conversation as a gallery entry.
+	 */
+	chara_id: number;
+	/**
+	 * Number of the conversation within the character's conversation gallery.
+	 */
+	number: number;
+	/**
+	 * Location ID of the conversation.
+	 */
+	location: 110 | 120 | 130 | 210 | 220 | 310 | 410 | 420 | 430 | 510 | 520 | 530;
+	/**
+	 * English name of the location, for convenience.
+	 */
+	location_name: string;
+	/**
+	 * First character in the conversation.
+	 * Not necessarily equal to chara_id.
+	 */
+	chara_1: number;
+	/**
+	 * Second character, if present.
+	 */
+	chara_2?: number;
+	/**
+	 * Third character, if present.
+	 */
+	chara_3?: number;
+	/**
+	 * Some unknown number in the game's local database.
+	 */
+	condition_type: 0 | 1 | 2 | 3 | 4;
+}