@polkadot/util/bn/toBn.js

A collection of useful utilities for @polkadot

import { hexToBn } from '../hex/toBn.js';
import { isBigInt } from '../is/bigInt.js';
import { isHex } from '../is/hex.js';
import { isToBigInt } from '../is/toBigInt.js';
import { isToBn } from '../is/toBn.js';
import { BN } from './bn.js';
/**
 * @name bnToBn
 * @summary Creates a BN value from a BN, bigint, string (base 10 or hex) or number input.
 * @description
 * `null` inputs returns a `0x0` result, BN values returns the value, numbers returns a BN representation.
 * @example
 * <BR>
 *
 * ```javascript
 * import BN from 'bn.js';
 * import { bnToBn } from '@polkadot/util';
 *
 * bnToBn(0x1234); // => BN(0x1234)
 * bnToBn(new BN(0x1234)); // => BN(0x1234)
 * ```
 */
export function bnToBn(value) {
    return value
        ? BN.isBN(value)
            ? value
            : isHex(value)
                ? hexToBn(value.toString())
                : isBigInt(value)
                    ? new BN(value.toString())
                    : isToBn(value)
                        ? value.toBn()
                        : isToBigInt(value)
                            ? new BN(value.toBigInt().toString())
                            : new BN(value)
        : new BN(0);
}