/**
 * OpenAPI spec loading for `archrad ingest openapi` — local path or http(s) URL.
 */
export declare const INGEST_OPENAPI_UA = "archrad/ingest-openapi (+https://github.com/archradhq/arch-deterministic)";
/** Parse repeatable CLI `-H "Name: value"` into header map for `fetch`. */
export declare function parseHeaderPairs(pairs: string[]): Record<string, string>;
export declare function isHttpOrHttpsUrl(s: string): boolean;
export declare const DEFAULT_ARCHRAD_UA = "archrad (+https://github.com/archradhq/arch-deterministic)";
export type ReadTextFromPathOrUrlOptions = {
    extraHeaders?: Record<string, string>;
    /** Default: YAML + JSON + plain (GitHub raw works). */
    accept?: string;
    userAgent?: string;
};
/**
 * Read text from a local path or http(s) URL — shared by OpenAPI ingest, `yaml-to-ir`, etc.
 */
export declare function readTextFromPathOrUrl(pathOrUrl: string, opts?: ReadTextFromPathOrUrlOptions): Promise<string>;
/** Read OpenAPI document text from a local path or http(s) URL. */
export declare function readOpenApiSpecInput(spec: string, extraHeaders?: Record<string, string>): Promise<string>;
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