Interface LifiIntentsService

LI.FI Intents (Messenger.LIFI_INTENTS) quotes and orders.

Send flow (EVM and Solana source chains):

getQuote (or getAmountToBeReceived / getAmountToSend with Messenger.LIFI_INTENTS) to show the expected amounts, the Allbridge fee and the ETA.
EVM: bridge.checkAllowance / bridge.rawTxBuilder.approve with Messenger.LIFI_INTENTS: the spender is sourceToken.lifiIntents.bridgeAddress. A native source token and a Solana source need no approval. Approve before creating the order: the order is short-lived.
buildSendTransaction (or bridge.rawTxBuilder.send with Messenger.LIFI_INTENTS): creates the order and returns the transaction to sign: the LifiIntentsBridge call on EVM, a VersionedTransaction of the lifi-intents-bridge program on Solana (the sender is the fee payer).
Sign and send the transaction at once (see LifiIntentsOrder.validUntil), before order.fillDeadline (a Solana transaction also carries a fresh blockhash, valid for about a minute).
getTransferStatus(sourceChainSymbol, txId) once the Core API has indexed the transfer.

interface LifiIntentsService {
    buildSendTransaction(
        params: LifiIntentsSendParams,
    ): Promise<LifiIntentsSendTransaction>;
    createOrder(
        params: LifiIntentsCreateOrderParams,
    ): Promise<LifiIntentsOrder>;
    getQuote(params: LifiIntentsQuoteParams): Promise<LifiIntentsQuote>;
}

Index

Methods

buildSendTransaction createOrder getQuote

Methods

buildSendTransaction

buildSendTransaction(
params: LifiIntentsSendParams,
): Promise<LifiIntentsSendTransaction>
Builds the transaction of a LI.FI Intents transfer: uses params.lifiIntentsOrder or creates a new order (EXACT_INPUT), then returns its transaction: the LifiIntentsBridge call as a raw EVM transaction, or the unsigned VersionedTransaction of the Solana program (RawBridgeSolanaTransaction).
Parameters
- params: LifiIntentsSendParams
  See LifiIntentsSendParams
Returns Promise<LifiIntentsSendTransaction>
LifiIntentsSendTransaction
- Defined in src/services/lifi-intents/index.ts:68

createOrder

createOrder(params: LifiIntentsCreateOrderParams): Promise<LifiIntentsOrder>
Creates a LI.FI Intents order: a live quote with the ready-to-sign LifiIntentsBridge transaction. The order is short-lived: create it right before signing, after the allowance is in place.
Parameters
- params: LifiIntentsCreateOrderParams
  See LifiIntentsCreateOrderParams
Returns Promise<LifiIntentsOrder>
LifiIntentsOrder with float amounts

Throws
the same errors as getQuote
- Defined in src/services/lifi-intents/index.ts:58

getQuote

getQuote(params: LifiIntentsQuoteParams): Promise<LifiIntentsQuote>
Fetches a LI.FI Intents quote.
Parameters
- params: LifiIntentsQuoteParams
  See LifiIntentsQuoteParams
Returns Promise<LifiIntentsQuote>
LifiIntentsQuote with float amounts

Throws
LifiIntentsDoesNotSupportedError if the route is not supported, LifiIntentsAmountTooLowError, LifiIntentsAmountTooHighError, LifiIntentsNoQuoteError or LifiIntentsQuoteError if no quote is available
- Defined in src/services/lifi-intents/index.ts:49