import { Ref } from 'vue';
/**
 * Module for general types only, not module-specific ones
 */
export type Absence = undefined | null;
export type Nothing = Absence | void;
export type Value = boolean | string | number;
export type Thing = Value | object | ObjectType | Record<string, any> | symbol;
export type Any = Nothing | Thing;
export type Property = string | number | symbol;
export type Json = string | number | boolean | {
    [x: string]: Json | null;
} | Array<Json | null>;
export type ObjectType = {
    [key: Property]: Any;
};
export type Comparable = {
    [key: Property]: Exclude<Any, symbol>;
};
export type Index = string | number | symbol;
export type Indexable = ObjectType | Array<Thing> | Record<Index, Any>;
export type ValueOf<T> = T[keyof T];
export type UnionOf<T extends Readonly<unknown[]>> = T[number];
export type Runner = () => void;
export type WatchedRunner = Runner & {
    running?: Ref<boolean>;
};
export type Callback<T> = () => T;
export type AsyncCallback<T> = () => Promise<T>;
export type Handler<T extends Any> = (o: T) => Any;
export type Filter<T extends Any> = (o: T) => boolean;
export type Sorter<T extends Any> = (a: T, b: T) => number;
export type Mapper<I extends Thing, O extends Any> = (i: I) => O;
export type Getter<T extends Any> = () => T | Absence;
export type Setter<T extends Any> = (o: T) => Any;
export type Valuer<T extends Thing> = (o: T) => Value;