Utility

FCT Core Library utility functions

import { utils } from "@kirobo/fct-core";

getVariablesAsBytes32

Convert array of variables as bytes32[]

const variablesAsBytes32 = utils.getVariablesAsBytes32(variables)

Method Arguments

Name	Type	Description
typedData	TypedData	EIP-712 Typed Data object from FCT

Returns

bytes32[] - Variables array

transactionValidator

Promise function - Validate FCT transaction

const { isValid, txData, prices, error } = await utils.transactionValidator(
    validatorData
)

Method Arguments

ITxValidator

Returns

object

Name	Type	Description
isValid	boolean	RPC URL
txData	object	gas , gasPrices and type for transaction overrides
prices	object	Transaction overrides for only gas and gasPrices
error	string | null	If transaction validation fails, error will be a string. If transaction validation succeeds - null

getGasPrices

Promise function - get EIP1559 slow, average ,fast and fastest speeds maxFeePerGas and maxPriorityFeePerGas

const variablesAsBytes32 = utils.getGasPrices({
    rpcUrl,
    historicalBlock
})

Method Arguments

Name	Type	Description
typedData	TypedData	EIP-712 Typed Data object from FCT

Returns

object

{
  slow: {
    maxFeePerGas: number,
    maxPriorityFeePerGas: number,
  },
  average: {
    maxFeePerGas: number,
    maxPriorityFeePerGas: number,
  },
  fast: {
    maxFeePerGas: number,
    maxPriorityFeePerGas: number,
  },
  fastest: {
    maxFeePerGas: number,
    maxPriorityFeePerGas: number,
  },
}