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import type { HexString } from 'https://deno.land/x/polkadot@0.2.40/util/types.ts';import type { Keypair } from '../types.ts';
import { u8aToU8a } from 'https://deno.land/x/polkadot@0.2.40/util/mod.ts';import { sr25519Sign as wasmSign } from 'https://deno.land/x/polkadot@0.2.40/wasm-crypto/mod.ts';
/** * @name sr25519Sign * @description Returns message signature of `message`, using the supplied pair */export function sr25519Sign (message: HexString | Uint8Array | string, { publicKey, secretKey }: Partial<Keypair>): Uint8Array {  if (publicKey?.length !== 32) {    throw new Error('Expected a valid publicKey, 32-bytes');  } else if (secretKey?.length !== 64) {    throw new Error('Expected a valid secretKey, 64-bytes');  }
  return wasmSign(publicKey, secretKey, u8aToU8a(message));}