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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| import axios from "axios"; | ||
| import { | ||
| GAS_LIMIT, | ||
| TGas, | ||
| convertToGwei, | ||
| getConstantGas, | ||
| getGas, | ||
| } from "./utils"; | ||
|
|
||
| const getConstantGasForPolygon = (): TGas => getConstantGas(800); | ||
|
|
||
| const getGasFromGasStation = async (): Promise<TGas> => { | ||
| const response = await axios.get("https://gasstation.polygon.technology/v2"); | ||
| console.log("polygon gas response", response.data); | ||
|
|
||
| const gas = convertToGwei(String(response?.data?.fast.maxFee)); | ||
|
|
||
| return { | ||
| maxPriorityFeePerGas: gas, | ||
| maxFeePerGas: gas, | ||
| gasLimit: GAS_LIMIT, | ||
| }; | ||
| }; | ||
|
|
||
| export const getPolygonGas = async (): Promise<TGas> => { | ||
| const gas = await getGas(getGasFromGasStation, getConstantGasForPolygon); | ||
| console.log({ gas }, "gas in internal polygon"); | ||
| return gas; | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| import { BigNumberish as EthersBigNumber, ethers } from "ethers"; | ||
|
|
||
| export type TGas = { | ||
| maxPriorityFeePerGas: EthersBigNumber; | ||
| maxFeePerGas: EthersBigNumber; | ||
| gasLimit: number; | ||
| }; | ||
|
|
||
| type TArgs = [ | ||
| getGasStationGas: () => Promise<TGas>, | ||
| getConstantGas: () => TGas, | ||
| ]; | ||
|
|
||
| type TGetGas = (...args: TArgs) => Promise<TGas>; | ||
|
|
||
| export const GAS_LIMIT = 5_000_000; | ||
|
|
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| export type TCreateGasConfig = { | ||
| chainNonce: number; | ||
| gasToAdd: number; | ||
| constantGas: number; | ||
| gasStationEndpoint: string; | ||
| }; | ||
|
|
||
| export const convertToGwei = (value: string): EthersBigNumber => { | ||
| return ethers.parseUnits(value, "gwei"); | ||
| }; | ||
|
|
||
| export const getConstantGas = (fee: number): TGas => { | ||
| const maxPriorityFeePerGas = convertToGwei(`${fee}`); | ||
| const maxFeePerGas = convertToGwei(`${fee}`); | ||
| return { | ||
| maxPriorityFeePerGas, | ||
| maxFeePerGas, | ||
| gasLimit: GAS_LIMIT, | ||
| }; | ||
| }; | ||
|
|
||
| export const getGas: TGetGas = async (getGasStationGas, getConstantGas) => { | ||
| let retriesForGettingGas = 0; | ||
| while (retriesForGettingGas < 5) { | ||
| try { | ||
| return await getGasStationGas(); | ||
| } catch (error) { | ||
| console.log("error when getting gas for", error); | ||
| if (retriesForGettingGas === 4) { | ||
| return getConstantGas(); | ||
| } | ||
| await sleep(5_000); | ||
| retriesForGettingGas++; | ||
| } | ||
| } | ||
| return getConstantGas(); | ||
| }; | ||
|
|
||
| export function sleep(ms: number) { | ||
| return new Promise((resolve) => { | ||
| setTimeout(resolve, ms); | ||
| }); | ||
| } |
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