在 nodejs 中使用 bip39 npm 包一直出错？

Question

我从下面得到的错误是： 'The "data" argument must be of type string or an instance of Buffer, TypedArray, or DataView. Received an instance of Promise'

当我 console.log 'seed' 我得到了 Promise { }，但是这个教程有这样的代码。

代码：

const bip39 = require('bip39');
const hdkey = require('hdkey');

const mnemonic = bip39.generateMnemonic(); //generates a 12 word mnemonic

const seed = bip39.mnemonicToSeed(mnemonic); //creates seed buffer

const root = hdkey.fromMasterSeed(seed); //should not be passing a promise into here
//const masterPrivateKey = root.privateKey.toString('hex');

const addrnode = root.derive("m/44'/60'/0'/0/0");
console.log(seed);

Answer 1

也许您的教程已经过时了。在bip39的document中，我们有2种mnemonicToSeed：

mnemonicToSeed: returns Promise
mnemonicToSeedSync: returns Buffer

作为你的例子，我们有2种方法可以解决上面的2个函数。

mnemonicToSeedSync

...
const seed = bip39.mnemonicToSeedSync(mnemonic); // creates seed buffer
...

mnemonicToSeed

(async () => { // wrap logic into a async function
  const mnemonic = bip39.generateMnemonic(); // generates a 12 word mnemonic

  // wait until seed finished to get seed Buffer
  const seed = await bip39.mnemonicToSeed(mnemonic); // creates seed buffer

  const root = hdkey.fromMasterSeed(seed); // should not be passing a promise into here
  //const masterPrivateKey = root.privateKey.toString('hex');

  const addrnode = root.derive("m/44'/60'/0'/0/0");
  console.log(seed);
})();

在 nodejs 中使用 bip39 npm 包一直出错？

Keep getting an error using bip39 npm package in nodejs?

node.js

express

bitcoin