32 lines
933 B
TypeScript
32 lines
933 B
TypeScript
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import { estimateFees as estimate } from '@mycrypto/gas-estimation'
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import { BigNumber, BigNumberish } from 'ethers'
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import { ChainId } from '@/types'
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import { numbers, RPC_LIST } from '@/constants'
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import { numberToHex } from '@/utilities/crypto'
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export async function getCurrentFees() {
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const { maxFeePerGas, maxPriorityFeePerGas, baseFee = numbers.ZERO } = await estimate(RPC_LIST[ChainId.MAINNET])
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return {
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baseFee: numberToHex(baseFee),
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maxFeePerGas: numberToHex(maxFeePerGas),
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maxPriorityFeePerGas: numberToHex(maxPriorityFeePerGas),
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}
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}
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const DEFAULT_BLOCKS = 2
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export function getCompoundBaseFee(baseFee: BigNumberish, blocks: number = DEFAULT_BLOCKS) {
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const divider = BigNumber.from('1000').pow(blocks)
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const multiplier = BigNumber.from('1125').pow(blocks)
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return BigNumber.from(baseFee).mul(multiplier).div(divider)
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}
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export const estimateFees = {
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getCurrentFees,
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getCompoundBaseFee,
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}
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