JavaScript HDWallet for EOS blockchain, something like ethereumjs-wallet.

yarn add @cobo/eos

import eos from '@cobo/eos';

const wallet = eos.fromMasterSeed('...');
const pubkey = wallet.getPublicKey(); // EOS4w7FYzzeYJ7oz6XD5exo9ARpQdGoBZhPPjv5ywyrF5PioHtthX

You will create a EOS HDNode instance and use the methods of the instance:

Static Methods:

• fromMasterSeed - Create HD instance from a master seed
• fromExtendedKey - Create HD instance from a base58 string
• fromMnemonic - Create HD instance from a mnemonic
• fromPrivateKey - Create HD instance from a EOS private key, or WIF (Cannot derive or get xpriv, xpub in this way)
• generateMnemonic - Generate new mnemonic, or you can use bip39 directly

Instance Methods:

• derivePath - Return a derived HD node instance use a path ("m/44'/196'/0'/0/0")
• deriveChild - Return a derived HD node instance
• getPrivateExtendedKey - Return the private extend key (base58)
• getPublicExtendedKey - Return the public extend key (base58)
• getPublicKey - Return the EOS public key
• getPrivateKey - Return the private key of the current node / address (or WIF)
• (async) generateTransaction - Generate a EOS raw transaction, param example:

const wallet = eos.fromMasterSeed('...');
const rawTx = await wallet.generateTransaction({
    from: 'from',
    to: 'to',
    amount: 100000, // will convert to '10.0000 EOS'
    memo: 'hello world',
    refBlockNum: 1, // get from eos.getInfo()
    refBlockPrefix: 452435776, // get from eos.getBlock(last_irrvertable_block)
    expiration: 60, // default is 60s
    symbol: 'EOS' // default is EOS
})

• (async) delegate - Generate a EOS raw tx for delegate bandwitdth

const wallet = eos.fromMasterSeed('...');
const rawTx = await wallet.delegate({
    from: 'from',
    to: 'to',
    cpuAmount: 100000, // will convert to '10.0000 EOS'
    netAmount: 100000,
    symbol: 'EOS', // default is EOS
    refBlockNum: 1,
    refBlockPrefix: 452435776
})

• (async) undelegate - Same as delegate
• (async) vote - Generate a EOS raw tx for vote producers

const wallet = eos.fromMasterSeed('...');
const rawTx = await wallet.vote({
    from: 'from',
    producers: ['lioninjungle'],
    refBlockNum: 1,
    refBlockPrefix: 452435776
})

See test/test.js