export const MATCHER = { ANY: Symbol(), NUMBER: Symbol(), STRING: Symbol(), OBJECT: Symbol(), ARRAY: Symbol() }; export class It { static isAny(): any { return MATCHER.ANY; } static isString(): any { return MATCHER.STRING; } static isArray(): any { return MATCHER.ARRAY; } static isNumber(): any { return MATCHER.NUMBER; } static isObject(): any { return MATCHER.OBJECT; } }