123456789101112131415161718

import type { HexString } from 'https://deno.land/x/polkadot@0.2.40/util/types.ts';
import { isU8a, u8aToU8a } from 'https://deno.land/x/polkadot@0.2.40/util/mod.ts';import { sr25519DerivePublicSoft } from 'https://deno.land/x/polkadot@0.2.40/wasm-crypto/mod.ts';
export function sr25519DerivePublic (publicKey: HexString | Uint8Array | string, chainCode: Uint8Array): Uint8Array {  const publicKeyU8a = u8aToU8a(publicKey);
  if (!isU8a(chainCode) || chainCode.length !== 32) {    throw new Error('Invalid chainCode passed to derive');  } else if (publicKeyU8a.length !== 32) {    throw new Error(`Invalid publicKey, received ${publicKeyU8a.length} bytes, expected 32`);  }
  return sr25519DerivePublicSoft(publicKeyU8a, chainCode);}