Class: AcrossBridgeProvider

Implements

• BridgeProvider<AcrossQuoteResult>

Constructors

constructor

• new AcrossBridgeProvider(options?): AcrossBridgeProvider

Parameters

Name	Type
options	AcrossBridgeProviderOptions

Returns

AcrossBridgeProvider

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:63

Properties

api

• Protected api: AcrossApi

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:60

---

cowShedSdk

• Protected cowShedSdk: CowShedSdk

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:61

---

info

• info: BridgeProviderInfo

Implementation of

BridgeProvider.info

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:68

---

options

• Private options: AcrossBridgeProviderOptions = {}

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:63

Methods

decodeBridgeHook

▸ decodeBridgeHook(_hook): Promise<BridgeDeposit>

Decode a bridge hook into a bridge deposit information.

This method is used to recover the information about the limit order placed into the bridge locking contract. This allows to load an order from the orderbook and decode the bridging hook and understand what was the minimum buy amount the user signed to receive in the destination chain.

Parameters

Name	Type	Description
_hook	CoWHook	The bridge hook

Returns

Promise<BridgeDeposit>

Implementation of

BridgeProvider.decodeBridgeHook

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:174

---

getBridgingId

▸ getBridgingId(_orderUid, _settlementTx, _logIndex): Promise<string>

Get the identifier of the bridging transaction from the settlement transaction.

Parameters

Name	Type	Description
_orderUid	string	The unique identifier of the order
_settlementTx	string	The settlement transaction in which the bridging post-hook was executed
_logIndex	number	The log index of the trade within the settlement transaction

Returns

Promise<string>

Implementation of

BridgeProvider.getBridgingId

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:178

---

getBuyTokens

▸ getBuyTokens(targetChainId): Promise<TokenInfo[]>

Get supported tokens for a chain

Parameters

Name	Type
targetChainId	TargetChainId

Returns

Promise<TokenInfo[]>

Implementation of

BridgeProvider.getBuyTokens

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:77

---

getCancelBridgingTx

▸ getCancelBridgingTx(_bridgingId): Promise<EvmCall>

Parameters

Name	Type
_bridgingId	string

Returns

Promise<EvmCall>

Implementation of

BridgeProvider.getCancelBridgingTx

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:193

---

getExplorerUrl

▸ getExplorerUrl(bridgingId): string

Get the explorer url for a bridging id.

Parameters

Name	Type	Description
bridgingId	string	The bridging id

Returns

string

Implementation of

BridgeProvider.getExplorerUrl

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:184

---

getGasLimitEstimationForHook

▸ getGasLimitEstimationForHook(_request): number

Returns the estimated gas cost for executing the bridge hook.

This method helps calculate the final amount of tokens the user will receive more accurately. The estimation is done without the amount parameter to break a circular dependency:

1. Hook gas costs affect the final amount
2. The final amount could affect hook gas costs

By estimating gas costs independently, we can resolve this dependency cycle.

Parameters

Name	Type
_request	QuoteBridgeRequest

Returns

number

Implementation of

BridgeProvider.getGasLimitEstimationForHook

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:142

---

getIntermediateTokens

▸ getIntermediateTokens(request): Promise<string[]>

Get intermediate tokens given a quote request.

An intermediate token, is a token in the source chain, that could be used to bridge the tokens to the destination chain. This method returns a sorted list of tokens, they are sorted by priority, so first tokens are more likely to be more liquid.

Parameters

Name	Type	Description
request	QuoteBridgeRequest	The quote request

Returns

Promise<string[]>

Implementation of

BridgeProvider.getIntermediateTokens

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:91

---

getNetworks

▸ getNetworks(): Promise<ChainInfo[]>

Get basic supported chains

Returns

Promise<ChainInfo[]>

Implementation of

BridgeProvider.getNetworks

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:73

---

getQuote

▸ getQuote(request): Promise<AcrossQuoteResult>

Get a quote for a bridge request.

Parameters

Name	Type	Description
request	QuoteBridgeRequest	The quote request

Returns

Promise<AcrossQuoteResult>

Implementation of

BridgeProvider.getQuote

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:111

---

getRefundBridgingTx

▸ getRefundBridgingTx(_bridgingId): Promise<EvmCall>

Parameters

Name	Type
_bridgingId	string

Returns

Promise<EvmCall>

Implementation of

BridgeProvider.getRefundBridgingTx

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:196

---

getSignedHook

▸ getSignedHook(chainId, unsignedCall, signer): Promise<BridgeHook>

Get a pre-authorized hook for initiating a bridge.

The hook contains the ethereum call that the trampoline contract will need to execute during the settlement to initate the bridge.

Typically, this hook will:

• Get the balance of cow-shed account
• Ensure the approval for the bridge lock contract is set
• Deposit into the bridge contract

This hook will include the pre-authorization (signature) of the owner of the cow-shed account (the trader).

Parameters

Name	Type
chainId	SupportedChainId
unsignedCall	EvmCall
signer	Signer

Returns

Promise<BridgeHook>

Implementation of

BridgeProvider.getSignedHook

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:146

---

getStatus

▸ getStatus(_bridgingId): Promise<BridgeStatusResult>

Get the status of a bridging transaction.

Parameters

Name	Type	Description
_bridgingId	string	The bridging id

Returns

Promise<BridgeStatusResult>

Implementation of

BridgeProvider.getStatus

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:189

---

getUnsignedBridgeCall

▸ getUnsignedBridgeCall(request, quote): Promise<EvmCall>

Get an unsigned bridge call for a quote.

The transaction details should be executed in the context of cow-shed account.

Parameters

Name	Type	Description
request	QuoteBridgeRequest	The quote request
quote	AcrossQuoteResult	The quote

Returns

Promise<EvmCall>

The unsigned transaction details that cow-shed needs to sign

Implementation of

BridgeProvider.getUnsignedBridgeCall

Defined in

external/cow-sdk/src/bridging/providers/across/AcrossBridgeProvider.ts:134