tf2-item-format/dist/shared/guards.d.ts

Format's TF2 items like backpack.tf does

/**
 * Checks if value is defindex,
 * can be used for textures or item defindexes or quality.
 * @param defindex
 * @returns
 */
export declare function hasDefindex(defindex: number | string | undefined | void | null): defindex is number | string;