/// <reference types="web" />
export declare const headersToRecord: (headers?: HeadersInit | null) => Record<string, string>;
export type $Method = "GET" | "POST" | "PUT" | "PATCH" | "DELETE" | "OPTIONS" | "HEAD" | "CONNECT" | "TRACE";
export declare const httpMethodCanOwnBody: (method: $Method | (string & {}), headers?: HeadersInit) => boolean;
/**
 * 获得一个资源对象的总大小，如果使用了分片下载，那么也返回总大小而不是分片的大小
 * @param headers
 * @returns
 */
export declare const headersGetTotalLength: (headers: Headers) => number | undefined;
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