multicall

Classes

MultiCaller

Util for executing multi calls against the MultiCallV2 contract

Properties

Property	Modifier	Type	Description
address	readonly	string	Address of multicall contract

Methods

getBlockNumberInput()

getBlockNumberInput(): CallInput<BigNumber>

Get the call input for the current block number

Returns

CallInput<BigNumber>

Source

utils/multicall.ts:163

getCurrentBlockTimestampInput()

getCurrentBlockTimestampInput(): CallInput<BigNumber>

Get the call input for the current block timestamp

Returns

CallInput<BigNumber>

Source

utils/multicall.ts:179

getTokenData()

getTokenData<T>(erc20Addresses: string[], options?: T): Promise<TokenInputOutput<T>[]>

Multicall for token properties. Will collect all the requested properies for each of the supplied token addresses.

Type parameters

Type parameter
T extends undefined | TokenMultiInput

Parameters

Parameter	Type	Description
erc20Addresses	string[]
options?	T	Defaults to just 'name'

Returns

Promise<TokenInputOutput<T>[]>

Source

utils/multicall.ts:261

multiCall()

multiCall<T, TRequireSuccess>(params: T, requireSuccess?: TRequireSuccess): Promise<DecoderReturnType<T, TRequireSuccess>>

Executes a multicall for the given parameters Return values are order the same as the inputs. If a call failed undefined is returned instead of the value.

To get better type inference when the individual calls are of different types create your inputs as a tuple and pass the tuple in. The return type will be a tuple of the decoded return types. eg.

  const inputs: [
    CallInput<Awaited<ReturnType<ERC20['functions']['balanceOf']>>[0]>,
    CallInput<Awaited<ReturnType<ERC20['functions']['name']>>[0]>
  ] = [
    {
      targetAddr: token.address,
      encoder: () => token.interface.encodeFunctionData('balanceOf', ['']),
      decoder: (returnData: string) =>
        token.interface.decodeFunctionResult('balanceOf', returnData)[0],
    },
    {
      targetAddr: token.address,
      encoder: () => token.interface.encodeFunctionData('name'),
      decoder: (returnData: string) =>
        token.interface.decodeFunctionResult('name', returnData)[0],
    },
  ]

  const res = await multiCaller.call(inputs)

Type parameters

Type parameter
T extends CallInput<unknown>[]
TRequireSuccess extends boolean

Parameters

Parameter	Type	Description
params	T
requireSuccess?	TRequireSuccess	Fail the whole call if any internal call fails

Returns

Promise<DecoderReturnType<T, TRequireSuccess>>

Source

utils/multicall.ts:227

fromProvider()

static fromProvider(provider: Provider): Promise<MultiCaller>

Finds the correct multicall address for the given provider and instantiates a multicaller

Parameters

Parameter	Type	Description
provider	Provider

Returns

Promise <MultiCaller>

Source

utils/multicall.ts:132

Type Aliases

CallInput<T>

type CallInput<T>: object;

Input to multicall aggregator

Type parameters

Type parameter
T

Type declaration

Member	Type	Description
decoder	(returnData: string) => T	Function to decode the result of the call
encoder	() => string	Function to produce encoded call data
targetAddr	string	Address of the target contract to be called

Source

utils/multicall.ts:37