export declare const webcrypto: Crypto;
export declare const sha256: (data: BufferSource) => Promise<ArrayBuffer>;
export declare const sha512: (data: BufferSource) => Promise<ArrayBuffer>;
export declare function shasum(algo: `SHA-${'256' | '384' | '512'}`): (data: BufferSource) => Promise<ArrayBuffer>;
export declare function hmac(hash: `SHA-${'256' | '384' | '512'}`, key: string): (data: string) => Promise<ArrayBuffer>;
export declare function encode_hex(data: Uint8Array | ArrayBuffer): string;
export declare function decode_base64(data: string): Uint8Array<ArrayBuffer>;
export declare function decode_hex(data: string): Uint8Array<ArrayBuffer>;
export declare function hex_to_bigint(hex: string): bigint;
export declare function buf_to_bigint(source: Uint8Array | ArrayBuffer): bigint;
export declare function json(task: Promise<Response>): Promise<object>;
export declare function text(task: Promise<Response>): Promise<string>;
export declare function http_get(url: string, agent?: string, signal?: AbortSignal): Promise<Response>;
export declare function use_signal_abort_controller(): readonly [AbortSignal, (reason?: any) => void, AbortController];
export type TrimmedNonEmptyString = string & {
    readonly brand: unique symbol;
};
export declare function is_TrimmedNonEmptyString(str: unknown): str is TrimmedNonEmptyString;
export declare function assert_TrimmedNonEmptyString(str: unknown, cause?: unknown): asserts str is TrimmedNonEmptyString;
export declare function mk_TrimmedNonEmptyString(str: unknown): TrimmedNonEmptyString | undefined;
export declare function nmap<A, B>(f: (a: A) => B, a: A | undefined | null): B | undefined;
export declare function unwrap(line: string): string;
export declare function safe_int({ min, max, }: {
    min?: number | undefined;
    max?: number | undefined;
}): (n: unknown) => number | undefined;