Bip39 js https://www.sbnation.com/users/typhanhmdy Although it employs BIP32 process you are able to even now import BIP39 seeds into Electrum wallet. Also aside from BIp32 There's BIP44 version which some wallet use to the generation of seeds. Want to check which wallets aid the BIP39 mnemonic recovery seed phrase? Read the https://bookmarkhard.com/story20600117/bip39-hardware-bip39-github-an-overview-https-cutt-ly-uryc5rw7