export declare const mainApi: import("@reduxjs/toolkit/query/react").Api<import("@reduxjs/toolkit/query/react").BaseQueryFn<string | import("@reduxjs/toolkit/query/react").FetchArgs, unknown, import("@reduxjs/toolkit/query/react").FetchBaseQueryError, {}, {}>, {}, "mainApi", "ReduxHistoryItems" | "Companies" | "Projects" | "Posts" | "Users", typeof import("@reduxjs/toolkit/dist/query/core/module").coreModuleName | typeof import("@reduxjs/toolkit/dist/query/react/module").reactHooksModuleName>;