SDK API

import Chainge from '@chainge/sdk';
const chainge = new Chainge(ethereum, {signUrl: 'https://xxxx'});

Static method

utils

Utils provides some basic conversion methods.

• utils.bufferToHex

• utils.bigIntToHex

• utils.toBuffer

• utils.intToHex

decodeRaw(raw)

Parse transaction RAW as a transaction object

Params	Type	Desc
raw	String	getTransferToMinterRaw() result

getBalance(walletAddress, rpcUrls, address):Promise

Get the balance

• walletAddress: wallet address

• rpcUrls: rpcUrl array

• address: Contract address

Params	Type	Desc
walletAddress	String	wallet address
rpcUrls	String	rpcUrl array
address	String	Contract address

getValueForHashRpc(rpc, hash, decimals):Promise

Get basic transaction information based on txHash

Params	Type	Desc
rpc	String	rpc
hash	String	the transaction hash
decimals	Number	decimals number

Instance methods

getSupportChains(): Promise

Returns the supported chain

getSupportTokens():Promise

Returns the supported token

getCrossChainQuote(params):Promise

Get a quote for a cross chain transaction

Params	subParams	Type	Desc
params		Object
	amount	Number	token amount to be crossed without token decimal
	feeLevel	String	Please refer to FeeLevel
	fromChain	String	from chain name
	toChain	String	to chain name
	token	String	token to be crossed

getAggregateQuote(params):Promise

Get a quote for a cross chain liquidity aggregator transaction

Params	subParams	Type	Desc
params		Object
	feeLevel	Number	Please refer to FeeLevel
	fromAmount	String	token amount to be swapped without token decimal
	fromToken	String	token to be swapped
	toChain	String	to chain name
	toToken	String	token swapped to

getOrderDetail(sn):Promise

Get Order Detail

Params	Type	Desc
sn	String	submitCrossChain or submitAggregate result

getTransferToMinterRaw(params):Promise

Get a raw for users to sign and then broadcast

Params	subParams	Type	Desc
params		Object
	amount	Number	token amount to be crossed without token decimal
	chain	String	original chain name
	evmAddress	String	user evm Address
	fromAddress	String	user from address (If it is from a EVM chain, the address is same as evmAddress)
	token	String	token to be crossed

getTransferToMinterParams(params):Promise

Get Minter params for users to sign and then broadcast

Params	subParams	Type	Desc
params		Object
	amount	Number	token amount to be crossed without token decimal
	chain	String	original chain name
	evmAddress	String	user evm Address
	fromAddress	String	user from address (If it is from a EVM chain, the address is same as evmAddress)
	token	String	token to be crossed

submitCrossChain(params):Promise

Submit transaction hash and start cross-chain

Params	subParams	Type	Desc
params		Object
	certHash	String	the transaction hash
	evmAddress	String	user evm Address
	feeLevel	Number	Please refer to FeelEvel
	fromAddress	String	user from address (If it is from a EVM chain, the address is same as evmAddress)
	fromAmount	Number	token amount to be swapped without token decimal
	fromChain	String	from chain name
	fromToken	String	token to be swapped
	toChain	String	to chain name

submitAggregate(params):Promise

Submit transaction hash and start cross chain liquidity swap

Params	subParams	Type	Desc
params		Object
	certHash	String	the transaction hash
	evmAddress	String	user evm Address
	feeLevel	Number	Please refer to FeelEvel
	fromAddress	String	user from address (If it is from a EVM chain, the address is same as evmAddress)
	fromAmount	Number	token amount to be swapped without token decimal
	fromChain	String	from chain name
	fromToken	String	token to be swapped
	toChain	String	to chain name
	toToken	String	token swapped to

getOrderDetailByHashAndEvmAddress(params):Promise

Get order Detail By Hash And EvmAddress

Params	subParams		Desc
params
	chain	String	original chain name
	evmAddress	String	user evm Address
	hash	String	the transaction hash

executeCrossChainByHash(params, time = 10000, callback):Promise<Funciton>

Submit transaction hash and start cross-chain, return Order detail subscribe function.

Params	subParams	Type	Desc
params		Object
	certHash	String	the transaction hash
	evmAddress	String	user evm Address
	feeLevel	Number	Please refer to FeelEvel
	fromAddress	String	user from address (If it is from a EVM chain, the address is same as evmAddress)
	fromAmount	Number	token amount to be swapped without token decimal
	fromChain	String	from chain name
	fromToken	String	token to be swapped
	toChain	String	to chain name
time		Number	The data update interval for the subscription function
callback		Function	Listening to the cross chain status

executeAggregateByHash(params, time = 10000, callback):Promise<Funciton>

Submit transaction hash and start cross chain liquidity swap, return Order detail subscribe function.

Params	subParams	Type	Desc
params		Object
	certHash	String	the transaction hash
	evmAddress	String	user evm Address
	feeLevel	Number	Please refer to FeelEvel
	fromAddress	String	user from address (If it is from a EVM chain, the address is same as evmAddress)
	fromAmount	Number	token amount to be swapped without token decimal
	fromChain	String	from chain name
	fromToken	String	token to be swapped
	toChain	String	to chain name
	toToken	String	token swapped to
time		Number	The data update interval for the subscription function
callback		Function	Listening to the cross chain status

executeCrossChain(params, time = 10000, callback):Promise<Funciton>

Submit transaction hash and start cross-chain, return Order detail subscribe function.

Params	subParams	Type	Desc
params		Object
	evmAddress	String	user evm Address
	feeLevel	Number	Please refer to FeelEvel
	fromAddress	String	user from address (If it is from a EVM chain, the address is same as evmAddress)
	fromAmount	Number	token amount to be swapped without token decimal
	fromChain	String	from chain name
	fromToken	String	token to be swapped
	toChain	String	to chain name
time		Number	The data update interval for the subscription function
callback		Function	Listening to the cross chain status

executeAggregate(params, time = 10000, callback):Promise<Function>

Submit transaction hash and start cross chain liquidity swap, return Order detail subscribe function.

Params	subParams	Type	Desc
params	​	Object	​
​	evmAddress	String	user evm Address
​	feeLevel	Number	Please refer to FeelEvel
​	fromAddress	String	user from address (If it is from a EVM chain, the address is same as evmAddress)
​	fromAmount	Number	token amount to be swapped without token decimal
​	fromChain	String	from chain name
​	fromToken	String	token to be swapped
​	toChain	String	to chain name
​	toToken	String	token swapped to
time	​	Number	The data update interval for the subscription function
callback	​	Function	Listening to the cross chain status

execute(params, time = 10000, callback):Promise<Function>

Wrapper methods for executeAggregate and executeCrossChain

Params	subParams	Type	Desc
params	​	Object	​
​	evmAddress	String	user evm Address
​	feeLevel	Number	Please refer to FeelEvel
​	fromAddress	String	user from address (If it is from a EVM chain, the address is same as evmAddress)
​	fromAmount	Number	token amount to be swapped without token decimal
​	fromChain	String	from chain name
​	fromToken	String	token to be swapped
​	toChain	String	to chain name
​	toToken	String	token swapped to
time	​	Number	The data update interval for the subscription function
callback	​	Function	Listening to the cross chain status

executeByHash(params, time = 10000, callback):Promise<Function>Wrapper methods for executeCrossChainByHash and executeAggregateByHash

Params	subParams	Type	Desc
params	​	Object	​
​	certHash	String	the transaction hash
​	evmAddress	String	user evm Address
​	feeLevel	Number	Please refer to FeelEvel
​	fromAddress	String	user from address (If it is from a EVM chain, the address is same as evmAddress)
​	fromAmount	Number	token amount to be swapped without token decimal
​	fromChain	String	from chain name
​	fromToken	String	token to be swapped
​	toChain	String	to chain name
​	toToken	String	token swapped to
time	​	Number	The data update interval for the subscription function
callback	​	Function	Listening to the cross chain status