MnemonicService

Source

BIP-39 mnemonic generation and validation.

Enum MnemonicStrength:

Value	Constant	Entropy
128	TWELVE_WORDS	128 bits → 12 words
256	TWENTY_FOUR_WORDS	256 bits → 24 words

generateMnemonic

generateMnemonic(strength?: MnemonicStrength): string

Generates a new BIP-39 mnemonic phrase.

Parameters:

Name	Type	Required	Description
strength	MnemonicStrength	No	Entropy bits. Defaults to MnemonicStrength.TWELVE_WORDS (128 bits, 12 words).

Returns: string — space-separated mnemonic phrase.

generateMnemonicArray

generateMnemonicArray(strength?: MnemonicStrength): string[]

Generates a mnemonic and returns it split into individual words.

Parameters:

Name	Type	Required	Description
strength	MnemonicStrength	No	Entropy bits. Defaults to MnemonicStrength.TWELVE_WORDS.

Returns: string[] — array of mnemonic words.

isMnemonicValid

isMnemonicValid(mnemonic: string): boolean

Validates a BIP-39 mnemonic phrase (checks wordlist membership and checksum).

Parameters:

Name	Type	Required	Description
mnemonic	string	Yes	Mnemonic phrase to validate.

Returns: boolean — true if the mnemonic is valid.

mnemonicToWordArray

mnemonicToWordArray(mnemonic: string): string[]

Splits a mnemonic string into an array of words by whitespace.

Parameters:

Name	Type	Required	Description
mnemonic	string	Yes	Mnemonic string.

Returns: string[] — individual words.

wordArrayToMnemonic

wordArrayToMnemonic(words: string[]): string

Joins an array of mnemonic words into a space-separated string.

Parameters:

Name	Type	Required	Description
words	string[]	Yes	Array of BIP-39 words.

Returns: string — mnemonic phrase.