[@node-fi/sdk-core](README.md) / Exports

# @node-fi/sdk-core

## Table of contents

### Enumerations

- [ChainId](enums/ChainId.md)
- [DateRange](enums/DateRange.md)
- [EventTypes](enums/EventTypes.md)
- [Interval](enums/Interval.md)
- [Rounding](enums/Rounding.md)
- [TokenTransactionType](enums/TokenTransactionType.md)

### Classes

- [EOA](classes/EOA.md)
- [PricedToken](classes/PricedToken.md)
- [SmartRouter](classes/SmartRouter.md)
- [SmartWallet](classes/SmartWallet.md)
- [Token](classes/Token.md)
- [TokenAmount](classes/TokenAmount.md)
- [Wallet](classes/Wallet.md)

### Interfaces

- [CustomRPC](interfaces/CustomRPC.md)
- [FeeInfo](interfaces/FeeInfo.md)
- [MultiCallPayload](interfaces/MultiCallPayload.md)
- [PageInfo](interfaces/PageInfo.md)
- [TokenReceiveTransaction](interfaces/TokenReceiveTransaction.md)
- [TokenSentTransaction](interfaces/TokenSentTransaction.md)
- [TokenSwapTransaction](interfaces/TokenSwapTransaction.md)
- [TokenTransactionBase](interfaces/TokenTransactionBase.md)
- [TokenTransferTransaction](interfaces/TokenTransferTransaction.md)
- [TransactionOptions](interfaces/TransactionOptions.md)

### Type Aliases

- [Address](modules.md#address)
- [BigNumberString](modules.md#bignumberstring)
- [NodeRoute](modules.md#noderoute)
- [RouterPayloadRequest](modules.md#routerpayloadrequest)
- [RouterResponse](modules.md#routerresponse)
- [TimeFrame](modules.md#timeframe)

### Variables

- [API\_BASE](modules.md#api_base)
- [CHAINS\_TO\_RPC](modules.md#chains_to_rpc)
- [DEFAULT\_CHAIN](modules.md#default_chain)
- [DEFAULT\_RPC](modules.md#default_rpc)
- [MULTICALL\_NETWORKS](modules.md#multicall_networks)
- [WALLET\_FACTORY\_ADDRESS](modules.md#wallet_factory_address)
- [WALLET\_SERVICE\_URL](modules.md#wallet_service_url)
- [chainsSupportingAlternateGas](modules.md#chainssupportingalternategas)
- [dateRangeToDefaultInterval](modules.md#daterangetodefaultinterval)
- [dateRangeToReadable](modules.md#daterangetoreadable)

### Functions

- [OverrideRPC](modules.md#overriderpc)
- [applySlippage](modules.md#applyslippage)
- [convertNodeRouteToContractPayload](modules.md#convertnoderoutetocontractpayload)
- [convertResultToAddress](modules.md#convertresulttoaddress)
- [convertResultToBigNumber](modules.md#convertresulttobignumber)
- [convertResultToNumber](modules.md#convertresulttonumber)
- [convertResultToString](modules.md#convertresulttostring)
- [convertTimeframeToUnixSeconds](modules.md#converttimeframetounixseconds)
- [fetchPrices](modules.md#fetchprices)
- [fetchTransactions](modules.md#fetchtransactions)
- [formatAllPricesQuery](modules.md#formatallpricesquery)
- [formatDepositRequest](modules.md#formatdepositrequest)
- [formatHeader](modules.md#formatheader)
- [formatHistoricalPricesQuery](modules.md#formathistoricalpricesquery)
- [formatRouteRequest](modules.md#formatrouterequest)
- [formatWithdrawRequest](modules.md#formatwithdrawrequest)
- [getBalances](modules.md#getbalances)
- [isTokenReceive](modules.md#istokenreceive)
- [isTokenSent](modules.md#istokensent)
- [isTokenSwap](modules.md#istokenswap)
- [isTokenTransfer](modules.md#istokentransfer)
- [mergeArrays](modules.md#mergearrays)
- [multicallMultipleContractMultipleData](modules.md#multicallmultiplecontractmultipledata)
- [multicallMultipleContractSingleData](modules.md#multicallmultiplecontractsingledata)
- [multicallSingleContractMultipleData](modules.md#multicallsinglecontractmultipledata)
- [subscribeToTokenTransfers](modules.md#subscribetotokentransfers)
- [tryParseTokenAmount](modules.md#tryparsetokenamount)
- [validateAndParseAddress](modules.md#validateandparseaddress)
- [waitForMinedTransaction](modules.md#waitforminedtransaction)

## Type Aliases

### Address

Ƭ **Address**: `string`

Represents an Etherem 20B address

#### Defined in

[constants/index.ts:16](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L16)

___

### BigNumberString

Ƭ **BigNumberString**: `string`

#### Defined in

[constants/index.ts:18](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L18)

___

### NodeRoute

Ƭ **NodeRoute**: `Object`

#### Type declaration

| Name | Type |
| :------ | :------ |
| `deadline` | `string` \| `number` |
| `expectedOutputAmount` | `string` \| `number` |
| `extras` | (`string` \| `number`[])[] |
| `inputAmount` | `string` \| `number` |
| `pairs` | `string`[] |
| `partner` | `string` \| `number` |
| `path` | `string`[] |
| `sig` | `string` \| `number`[] |

#### Defined in

[Routing/SmartRouter.ts:18](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/Routing/SmartRouter.ts#L18)

___

### RouterPayloadRequest

Ƭ **RouterPayloadRequest**: `Object`

#### Type declaration

| Name | Type |
| :------ | :------ |
| `amountIn` | [`BigNumberString`](modules.md#bignumberstring) |
| `chainId?` | [`ChainId`](enums/ChainId.md) |
| `deadlineMs?` | `number` |
| `from?` | [`Address`](modules.md#address) |
| `includeTxn?` | `boolean` |
| `maxHops?` | `number` |
| `priceImpact?` | `boolean` |
| `slippage?` | `number` |
| `to?` | [`Address`](modules.md#address) |
| `tokenIn` | [`Address`](modules.md#address) |
| `tokenOut` | [`Address`](modules.md#address) |

#### Defined in

[Routing/SmartRouter.ts:41](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/Routing/SmartRouter.ts#L41)

___

### RouterResponse

Ƭ **RouterResponse**: `Object`

#### Type declaration

| Name | Type |
| :------ | :------ |
| `details` | [`NodeRoute`](modules.md#noderoute) |
| `expectedOut` | [`BigNumberString`](modules.md#bignumberstring) |
| `minimumExpectedOut` | [`BigNumberString`](modules.md#bignumberstring) |
| `priceImpact` | { `denominator`: `number` ; `numerator`: `number`  } |
| `priceImpact.denominator` | `number` |
| `priceImpact.numerator` | `number` |
| `routerAddress` | [`Address`](modules.md#address) |
| `txn` | `TransactionConfig` \| { `error`: `string`  } |

#### Defined in

[Routing/SmartRouter.ts:29](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/Routing/SmartRouter.ts#L29)

___

### TimeFrame

Ƭ **TimeFrame**: `Time` \| \`${number} ${Time}s\` \| ``"all"``

Timeframe type used for historical queries

#### Defined in

[constants/index.ts:45](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L45)

## Variables

### API\_BASE

• `Const` **API\_BASE**: ``"https://us-central1-node-wallet.cloudfunctions.net"``

API Endpoints

#### Defined in

[constants/index.ts:73](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L73)

___

### CHAINS\_TO\_RPC

• `Const` **CHAINS\_TO\_RPC**: { [id in ChainId]: Object }

RPC Links for a given chain

#### Defined in

[constants/index.ts:131](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L131)

___

### DEFAULT\_CHAIN

• `Const` **DEFAULT\_CHAIN**: [`Celo`](enums/ChainId.md#celo) = `ChainId.Celo`

#### Defined in

[constants/index.ts:126](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L126)

___

### DEFAULT\_RPC

• `Const` **DEFAULT\_RPC**: ``"https://necessary-muddy-research.celo-mainnet.discover.quiknode.pro/3577f3bb994031ee8c5dfa75313b24bfa4cffd1e/"``

Chain-Specific Values

#### Defined in

[constants/index.ts:123](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L123)

___

### MULTICALL\_NETWORKS

• `Const` **MULTICALL\_NETWORKS**: `Record`<[`ChainId`](enums/ChainId.md), `string`\>

#### Defined in

[constants/index.ts:157](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L157)

___

### WALLET\_FACTORY\_ADDRESS

• `Const` **WALLET\_FACTORY\_ADDRESS**: { [chain in ChainId]: Address }

#### Defined in

[constants/index.ts:162](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L162)

___

### WALLET\_SERVICE\_URL

• `Const` **WALLET\_SERVICE\_URL**: ``"http://localhost:8080/"`` \| ``"https://wallets.nodefinance.org/"``

#### Defined in

[constants/index.ts:75](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L75)

___

### chainsSupportingAlternateGas

• `Const` **chainsSupportingAlternateGas**: `Set`<[`ChainId`](enums/ChainId.md)\>

#### Defined in

[constants/index.ts:114](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L114)

___

### dateRangeToDefaultInterval

• `Const` **dateRangeToDefaultInterval**: { [range in DateRange]: number }

#### Defined in

[constants/index.ts:180](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L180)

___

### dateRangeToReadable

• `Const` **dateRangeToReadable**: { [range in DateRange]: string }

Type Translations

#### Defined in

[constants/index.ts:171](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L171)

## Functions

### OverrideRPC

▸ **OverrideRPC**(`chain`, `rpc`): `Object`

Overrides the RPC for a given chain

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `chain` | [`ChainId`](enums/ChainId.md) | ChainId to override the RPC for |
| `rpc` | `Partial`<[`CustomRPC`](interfaces/CustomRPC.md)\> | https and wss rpc endpoints to override |

#### Returns

`Object`

| Name | Type |
| :------ | :------ |
| `http` | `string` |
| `wss?` | `string` |

#### Defined in

[constants/index.ts:154](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L154)

___

### applySlippage

▸ **applySlippage**(`amount`, `slippage`): `BigNumber`

#### Parameters

| Name | Type |
| :------ | :------ |
| `amount` | `BigNumber` |
| `slippage` | `number` |

#### Returns

`BigNumber`

#### Defined in

[utils/index.ts:109](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/utils/index.ts#L109)

___

### convertNodeRouteToContractPayload

▸ **convertNodeRouteToContractPayload**(`route`, `slippage`, `to`): [`string`[], `string`[], (`string` \| `number`[])[], `string` \| `number`, `string` \| `number`, `string` \| `number`, `string`, `string` \| `number`, `string` \| `number`, `string` \| `number`[]]

#### Parameters

| Name | Type |
| :------ | :------ |
| `route` | [`NodeRoute`](modules.md#noderoute) |
| `slippage` | `number` |
| `to` | `string` |

#### Returns

[`string`[], `string`[], (`string` \| `number`[])[], `string` \| `number`, `string` \| `number`, `string` \| `number`, `string`, `string` \| `number`, `string` \| `number`, `string` \| `number`[]]

#### Defined in

[Routing/SmartRouter.ts:55](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/Routing/SmartRouter.ts#L55)

___

### convertResultToAddress

▸ **convertResultToAddress**(`result?`, `i?`): `string`

#### Parameters

| Name | Type | Default value | Description |
| :------ | :------ | :------ | :------ |
| `result?` | `Result` | `undefined` | Result object from multicall |
| `i` | `number` | `0` | index of value within Result, default 0 |

#### Returns

`string`

address of ith value in Result

#### Defined in

[utils/index.ts:42](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/utils/index.ts#L42)

___

### convertResultToBigNumber

▸ **convertResultToBigNumber**(`result?`, `i?`): `BigNumber`

#### Parameters

| Name | Type | Default value | Description |
| :------ | :------ | :------ | :------ |
| `result?` | `Result` | `undefined` | Result object from multicall |
| `i` | `number` | `0` | index of value within Result, default 0 |

#### Returns

`BigNumber`

BigNumber of ith value in Result

#### Defined in

[utils/index.ts:51](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/utils/index.ts#L51)

___

### convertResultToNumber

▸ **convertResultToNumber**(`result?`, `i?`): `number`

#### Parameters

| Name | Type | Default value | Description |
| :------ | :------ | :------ | :------ |
| `result?` | `Result` | `undefined` | Result object from multicall |
| `i` | `number` | `0` | index of value within Result, default 0 |

#### Returns

`number`

Number of ith value in Result

#### Defined in

[utils/index.ts:60](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/utils/index.ts#L60)

___

### convertResultToString

▸ **convertResultToString**(`result?`, `i?`): `any`

#### Parameters

| Name | Type | Default value | Description |
| :------ | :------ | :------ | :------ |
| `result?` | `Result` | `undefined` | Result object from multicall |
| `i` | `number` | `0` | index of value within Result, default 0 |

#### Returns

`any`

string representation of ith value in Result

#### Defined in

[utils/index.ts:33](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/utils/index.ts#L33)

___

### convertTimeframeToUnixSeconds

▸ **convertTimeframeToUnixSeconds**(`timeframe`): `number`

#### Parameters

| Name | Type |
| :------ | :------ |
| `timeframe` | [`TimeFrame`](modules.md#timeframe) |

#### Returns

`number`

Unix seconds of given timeframe. If parsing error, will return current timestamp in Unix seconds.

#### Defined in

[utils/index.ts:149](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/utils/index.ts#L149)

___

### fetchPrices

▸ **fetchPrices**(`apiKey`, `chainId?`, `currency?`): `Promise`<{}\>

Fetches current token prices for a chain.  Prices can be up to 5 minutes stale currently,
and will be denominated in the supplied base currency.

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `apiKey` | `string` | API Key used for authentication |
| `chainId?` | [`ChainId`](enums/ChainId.md) | ChainId to get prices from.  If no ID is provided, will provide prices for all chains |
| `currency?` | `string` | Base currency.  If none is provided, price quotes will be in USD |

#### Returns

`Promise`<{}\>

A mapping from token address to current price

#### Defined in

[Tokens/fetchers.ts:32](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/Tokens/fetchers.ts#L32)

___

### fetchTransactions

▸ **fetchTransactions**(`walletAddress`, `chain`, `getToken`, `opts?`): `Promise`<([`TokenTransferTransaction`](interfaces/TokenTransferTransaction.md) \| [`TokenSwapTransaction`](interfaces/TokenSwapTransaction.md))[]\>

Fetches transactions for a given wallet, and classifies them based by their type.  When applicable, includes the equivalent
value of a transaction in local currency at the time of transaction.

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `walletAddress` | `string` | Wallet to fetch transactions for |
| `chain` | [`ChainId`](enums/ChainId.md) | Chain Id to get transactions for |
| `getToken` | (`address`: `string`) => [`Token`](classes/Token.md) | Helper to turn an address into a Token |
| `opts?` | `Object` | Optional paramter to set page, number of txns per page, and the local currency |
| `opts.localCurrencyCode?` | `string` | - |
| `opts.page?` | `number` | - |
| `opts.perPage?` | `number` | - |

#### Returns

`Promise`<([`TokenTransferTransaction`](interfaces/TokenTransferTransaction.md) \| [`TokenSwapTransaction`](interfaces/TokenSwapTransaction.md))[]\>

A list of transactions parsed into a useable format, alongside the equivalent value in the given local currency

#### Defined in

[Transactions/fetchTransactions.ts:26](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/Transactions/fetchTransactions.ts#L26)

___

### formatAllPricesQuery

▸ **formatAllPricesQuery**(): `string`

#### Returns

`string`

#### Defined in

[constants/index.ts:82](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L82)

___

### formatDepositRequest

▸ **formatDepositRequest**(`tokenIn`, `amountIn`, `tokenOut`): `string`

#### Parameters

| Name | Type |
| :------ | :------ |
| `tokenIn` | `string` |
| `amountIn` | `string` |
| `tokenOut` | `string` |

#### Returns

`string`

#### Defined in

[constants/index.ts:98](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L98)

___

### formatHeader

▸ **formatHeader**(`apiKey`): `Object`

#### Parameters

| Name | Type |
| :------ | :------ |
| `apiKey` | `string` |

#### Returns

`Object`

| Name | Type |
| :------ | :------ |
| `x-api-key` | `string` |

#### Defined in

[constants/index.ts:92](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L92)

___

### formatHistoricalPricesQuery

▸ **formatHistoricalPricesQuery**(`address`, `interval`, `timeframe`, `currency`): `string`

#### Parameters

| Name | Type |
| :------ | :------ |
| `address` | `string` |
| `interval` | `number` |
| `timeframe` | `string` |
| `currency` | `string` |

#### Returns

`string`

#### Defined in

[constants/index.ts:84](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L84)

___

### formatRouteRequest

▸ **formatRouteRequest**(): `string`

#### Returns

`string`

#### Defined in

[constants/index.ts:96](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L96)

___

### formatWithdrawRequest

▸ **formatWithdrawRequest**(`tokenIn`, `amountIn`, `tokenOut?`): `string`

#### Parameters

| Name | Type |
| :------ | :------ |
| `tokenIn` | `string` |
| `amountIn` | `string` |
| `tokenOut?` | `string` |

#### Returns

`string`

#### Defined in

[constants/index.ts:105](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/constants/index.ts#L105)

___

### getBalances

▸ **getBalances**(`chainId`, `wallet`, `tokens`): `Promise`<{}\>

Uses multicall to fetch token balances for a given wallet and list of token addresses.

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `chainId` | [`ChainId`](enums/ChainId.md) | ChainId to fetch balances from |
| `wallet` | `string` | Address of wallet to find balances for |
| `tokens` | `string`[] | Array of token addresses to fetch balances for |

#### Returns

`Promise`<{}\>

A map of token address to balance, in TokenAmount.  If a wallet has 0 balance for a token, the entry will be undefined.

#### Defined in

[Tokens/fetchers.ts:70](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/Tokens/fetchers.ts#L70)

___

### isTokenReceive

▸ **isTokenReceive**(`txn`): txn is TokenReceiveTransaction

#### Parameters

| Name | Type |
| :------ | :------ |
| `txn` | [`TokenTransactionBase`](interfaces/TokenTransactionBase.md) |

#### Returns

txn is TokenReceiveTransaction

#### Defined in

[Transactions/types.ts:72](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/Transactions/types.ts#L72)

___

### isTokenSent

▸ **isTokenSent**(`txn`): txn is TokenSentTransaction

#### Parameters

| Name | Type |
| :------ | :------ |
| `txn` | [`TokenTransactionBase`](interfaces/TokenTransactionBase.md) |

#### Returns

txn is TokenSentTransaction

#### Defined in

[Transactions/types.ts:68](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/Transactions/types.ts#L68)

___

### isTokenSwap

▸ **isTokenSwap**(`txn`): txn is TokenSwapTransaction

#### Parameters

| Name | Type |
| :------ | :------ |
| `txn` | [`TokenTransactionBase`](interfaces/TokenTransactionBase.md) |

#### Returns

txn is TokenSwapTransaction

#### Defined in

[Transactions/types.ts:83](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/Transactions/types.ts#L83)

___

### isTokenTransfer

▸ **isTokenTransfer**(`txn`): txn is TokenTransferTransaction

#### Parameters

| Name | Type |
| :------ | :------ |
| `txn` | [`TokenTransactionBase`](interfaces/TokenTransactionBase.md) |

#### Returns

txn is TokenTransferTransaction

#### Defined in

[Transactions/types.ts:77](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/Transactions/types.ts#L77)

___

### mergeArrays

▸ **mergeArrays**<`t`\>(`arr1`, `arr2`, `comparator`): `t`[]

Merges two sorted arrays.

#### Type parameters

| Name |
| :------ |
| `t` |

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `arr1` | `t`[] | sorted array |
| `arr2` | `t`[] | sorted array |
| `comparator` | (`t1`: `t`, `t2`: `t`) => `number` | how to compare entries in the arrays |

#### Returns

`t`[]

One array in sorted order

#### Defined in

[utils/index.ts:87](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/utils/index.ts#L87)

___

### multicallMultipleContractMultipleData

▸ **multicallMultipleContractMultipleData**(`web3`, `payload`): `Promise`<`any`[]\>

#### Parameters

| Name | Type |
| :------ | :------ |
| `web3` | `default` |
| `payload` | [`MultiCallPayload`](interfaces/MultiCallPayload.md)[] |

#### Returns

`Promise`<`any`[]\>

#### Defined in

[utils/multicall.ts:58](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/utils/multicall.ts#L58)

___

### multicallMultipleContractSingleData

▸ **multicallMultipleContractSingleData**(`web3`, `targetInterface`, `targets`, `method`, `data?`, `block?`): `Promise`<`Result`[]\>

#### Parameters

| Name | Type |
| :------ | :------ |
| `web3` | `default` |
| `targetInterface` | `Interface` |
| `targets` | `string`[] |
| `method` | `string` |
| `data?` | `any`[] |
| `block?` | `number` |

#### Returns

`Promise`<`Result`[]\>

#### Defined in

[utils/multicall.ts:14](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/utils/multicall.ts#L14)

___

### multicallSingleContractMultipleData

▸ **multicallSingleContractMultipleData**(`web3`, `targetInterface`, `target`, `method`, `data`): `Promise`<`Result`[]\>

#### Parameters

| Name | Type |
| :------ | :------ |
| `web3` | `default` |
| `targetInterface` | `Interface` |
| `target` | `string` |
| `method` | `string` |
| `data` | `any`[][] |

#### Returns

`Promise`<`Result`[]\>

#### Defined in

[utils/multicall.ts:38](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/utils/multicall.ts#L38)

___

### subscribeToTokenTransfers

▸ **subscribeToTokenTransfers**(`wallet`, `chain`, `tokens`, `callback`): () => `void`

Listen for an react to any transfer involving a given wallet.
When no longer interested in listending, call the returned callback to terminate the listeners.

**`Exmample`**

```ts
 const wallet = getMyWallet()
 const tokens = getMyTokensToWatchOver

 const onTransfer = (token: Address, _, pureEvent) => console.log(`Transfer detected for token ${token} in transaction ${pureEvent.transactionHash}`)

 const terminate = subscribeToTokenTransfers(wallet, wallet.homeChain, tokens, onTransfer)

 \* // Do something

 terminate() \* // Close subscriptions
```

**`Exmample`**

```ts
 const MyComponent() {
   const wallet = useWallet;
   const tokens = useTokens();

   const onTransfer = useCallback((token) => console.log(token))

   useEffect(() => {
     const terminate = subscribeToTokenTransfers(wallet, wallet.homeChain, tokens, onTransfer)

     \* // Close event listeners on lifecycle end
     return terminate
   }, [])
}
```

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `wallet` | `string` \| [`Wallet`](classes/Wallet.md) | Wallet to watch transfers for |
| `chain` | [`ChainId`](enums/ChainId.md) | Chain to watch transfers on |
| `tokens` | `string`[] | Tokens to explicitly watch for transfers |
| `callback` | (`token`: `string`, `newBalance`: `BigNumber`, `e?`: `Log`) => `void` | Callback to execute when a transfer is detected |

#### Returns

`fn`

A method to unsubcribe from all event listeners requried to watch transfers

▸ (): `void`

##### Returns

`void`

#### Defined in

[Tokens/fetchers.ts:162](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/Tokens/fetchers.ts#L162)

___

### tryParseTokenAmount

▸ **tryParseTokenAmount**(`value?`, `currency?`): [`TokenAmount`](classes/TokenAmount.md) \| `undefined`

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `value?` | `string` | string value to parse into a token value, this is the decimal adjusted value (i.e. in eth, not wei) |
| `currency?` | [`Token`](classes/Token.md) | the corresponding token for the token amount |

#### Returns

[`TokenAmount`](classes/TokenAmount.md) \| `undefined`

TokenAmount object with the value parsed, or undefined if unable to parse

#### Defined in

[utils/index.ts:118](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/utils/index.ts#L118)

___

### validateAndParseAddress

▸ **validateAndParseAddress**(`address`): `string`

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `address` | `string` | string to check if an address is valid and checksummed |

#### Returns

`string`

checksummed address, or undefined if address is invalid

#### Defined in

[utils/index.ts:17](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/utils/index.ts#L17)

___

### waitForMinedTransaction

▸ **waitForMinedTransaction**(`txnHash`, `web3`): `Promise`<`boolean`\>

#### Parameters

| Name | Type | Description |
| :------ | :------ | :------ |
| `txnHash` | `string` | Hash of transaction waiting to be mined |
| `web3` | `default` | web3 object |

#### Returns

`Promise`<`boolean`\>

status of the transaction (true = success, false = revert)

#### Defined in

[utils/index.ts:69](https://github.com/Node-Fi/SDK-Core/blob/1f4f819/src/utils/index.ts#L69)