Overview The DeBridgeDlnFacet enables cross-chain token transfers using deBridge’s DLN (Deswap Liquidity Network). DLN provides fast and efficient cross-chain transfers with competitive pricing.
Contract Interface Constants DLN_SOURCE Returns the address of the DLN source contract.
function DLN_SOURCE () external view returns ( address )
Configuration Functions initDeBridgeDln Initializes deBridge DLN with chain ID mappings.
function initDeBridgeDln ( ChainIdConfig [] chainIdConfigs ) external
Array of chain ID configurations Show ChainIdConfig fields
setDeBridgeChainId Sets a deBridge chain ID for a specific chain.
function setDeBridgeChainId ( uint256 _chainId , uint256 _deBridgeChainId ) external
getDeBridgeChainId Retrieves the deBridge chain ID for a given chain.
function getDeBridgeChainId ( uint256 _chainId ) external view returns ( uint256 )
Bridging Functions startBridgeTokensViaDeBridgeDln Bridges tokens to another chain using deBridge DLN.
function startBridgeTokensViaDeBridgeDln ( BridgeData _bridgeData , DeBridgeDlnData _deBridgeData ) external payable
Standard bridge data containing transaction details
deBridge DLN-specific bridging parameters Show DeBridgeDlnData fields
Asset to receive on destination
Order authority on destination
Minimum amount to receive
swapAndStartBridgeTokensViaDeBridgeDln Performs a token swap on the source chain before bridging via deBridge DLN.
function swapAndStartBridgeTokensViaDeBridgeDln ( BridgeData _bridgeData , SwapData [] _swapData , DeBridgeDlnData _deBridgeData ) external payable
Array of swap operations to execute before bridging
deBridge DLN-specific parameters
Data Structures DeBridgeDlnData struct DeBridgeDlnData { bytes receivingAssetId ; // Receiving asset bytes receiver ; // Receiver address bytes orderAuthorityDst ; // Order authority uint256 minAmountOut ; // Min output amount }
ChainIdConfig struct ChainIdConfig { uint256 chainId ; // Standard chain ID uint256 deBridgeChainId ; // deBridge chain ID }
Usage Example import { DeBridgeDlnFacet } from '@lifi/contract-types' ; const deBridgeFacet = DeBridgeDlnFacet__factory . connect ( facetAddress , signer ); const bridgeData = { transactionId: '0x...' , bridge: 'debridge-dln' , integrator: 'my-dapp' , referrer: '0x0000000000000000000000000000000000000000' , sendingAssetId: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48' , // USDC receiver: '0x...' , minAmount: ethers . utils . parseUnits ( '100' , 6 ), destinationChainId: 137 , // Polygon hasSourceSwaps: false , hasDestinationCall: false }; const deBridgeData = { receivingAssetId: ethers . utils . hexlify ( ethers . utils . toUtf8Bytes ( '0x...' )), receiver: ethers . utils . hexlify ( ethers . utils . toUtf8Bytes ( '0x...' )), orderAuthorityDst: '0x00' , minAmountOut: ethers . utils . parseUnits ( '99' , 6 ) }; const tx = await deBridgeFacet . startBridgeTokensViaDeBridgeDln ( bridgeData , deBridgeData , { value: 0 } ); await tx . wait ();
Events
DeBridgeInitialized(ChainIdConfig[] chainIdConfigs) - Emitted when DLN is initializedDeBridgeChainIdSet(uint256 chainId, uint256 deBridgeChainId) - Emitted when chain ID mapping is setDlnOrderCreated(bytes32 orderId) - Emitted when a DLN order is createdLiFiTransferStarted(BridgeData bridgeData) - Standard transfer eventAssetSwapped (when using swapAndStart variant)
See Also