import { type ReferenceObject, type SchemaObject } from "openapi3-ts";
import { type Falsy, type Primitive } from "utility-types";
import { type TaggedSchema } from "./schemas.js";
export declare function isTruthy<T extends Exclude<any, Falsy>>(item: T | null | undefined): item is Exclude<T, Falsy>;
export declare function isNotPrimitive(item: any): item is Exclude<any, Primitive>;
export declare function isNotReferenceObject<T, U extends T | ReferenceObject = T | ReferenceObject>(item: U): item is Exclude<U, ReferenceObject>;
export declare function isTaggedSchema(t: any): t is SchemaObject & TaggedSchema;
export declare function findMissingEntries<T extends object, U extends object>(mainObject: T, comparisonObject: U | null | undefined): (keyof T)[];
export declare function decodeBasicAuthHeader(header: string): {
    username: string;
    password: string;
} | null;