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import type { HexString, NumberOptions, ToBn } from '../types.ts';import type { BN } from './bn.ts';
import { u8aToHex } from '../u8a/index.ts';import { bnToU8a } from './toU8a.ts';
/** * @name bnToHex * @summary Creates a hex value from a BN.js bignumber object. * @description * `null` inputs returns a `0x` result, BN values return the actual value as a `0x` prefixed hex value. Anything that is not a BN object throws an error. With `bitLength` set, it fixes the number to the specified length. * @example * <BR> * * ```javascript * import BN from 'https://esm.sh/bn.js@5.2.1'; * import { bnToHex } from 'https://deno.land/x/polkadot@0.2.33/util/mod.ts'; * * bnToHex(new BN(0x123456)); // => '0x123456' * ``` */export function bnToHex <ExtToBn extends ToBn> (value?: ExtToBn | BN | bigint | number | null, { bitLength = -1, isLe = false, isNegative = false }: NumberOptions = {}): HexString {  return u8aToHex(bnToU8a(value, { bitLength, isLe, isNegative }));}