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Migrate to Lumos v0.30

BREAKING: Buffer replaced by Uint8Array​

Lumos can now run in browsers without any extra configs / polyfills with vite, webpack or create-react-app.

Buffer was return type​

Methods / functions used to return a Buffer now returns a Uint8Array, e.g. In @ckb-lumos/hd

- export function privateToPublic(privateKey: Buffer | HexString): Buffer | HexString
+ export function privateToPublic(privateKey: Uint8Array | HexString): Uint8Array | HexString

- export function mnemonicToSeedSync(mnemonic = "", password = ""): Buffer
+ export function mnemonicToSeedSync(mnemonic = "", password = ""): Uint8Array

- export function mnemonicToSeed(mnemonic = "", password = ""): Promise<Buffer>
+ export function mnemonicToSeed(mnemonic = "", password = ""): Promise<Uint8Array>

You can use the hexify method from @ckb-lumos/lumos/codec to replace buffer.toString('hex')

- "0x" + privateToPublick(privKey).toString('hex')
+ hexify(privateToPublic(privKey))

Notice: hexify returns HexString which starts with '0x' while buffer.toString('hex') result has no '0x' prefix.

Same for @ckb-lumos/hd/KeyStore

export default class Keystore {
  ...
- derivedKey(password: string): Buffer
+ derivedKey(password: string): Uint8Array
  ...
}

Buffer was parameter type​

You can still pass in Buffer because Buffer is a subclass of Uint8Array, but using Uint8Array is recomended.

@ckb-lumos/hd/KeyChain

export default class Keychain {
  ...
- constructor(privateKey: Buffer, chainCode: Buffer)
+ constructor(privateKey: Uint8Array, chainCode: Uint8Array)
  ...
- hash160(data: Buffer): Buffer
+ hash160(data: Uint8Array): Uint8Array
}

@ckb-lumos/hd/KeyStore

export default class Keystore {
  ...
  static create(
      extendedPrivateKey: ExtendedPrivateKey,
      password: string,
-     options: { salt?: Buffer; iv?: Buffer } = {}
+     options: { salt?: Uint8Array; iv?: Uint8Array } = {}
    ): Keystore
  ...
- static mac(derivedKey: Buffer, ciphertext: Buffer): HexStringWithoutPrefix
+ static mac(derivedKey: Uint8Array, ciphertext: Uint8Array): HexStringWithoutPrefix
}