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7b963cabd7
When a lot of transactions are occurring on the network, such as during an NFT drop, it drives gas fees up. When this happens, we want to not only inform the user about this, but also dissuade them from using a higher gas fee (as we have proved in testing that high gas fees can cause bidding wars and exacerbate the situation). The method for determining whether the network is "busy" is already handled by GasFeeController, which exposes a `networkCongestion` property within the gas fee estimate data. If this number exceeds 0.66 — meaning that the current base fee is above the 66th percentile among the base fees over the last several days — then we determine that the network is "busy".
53 lines
1.8 KiB
JavaScript
53 lines
1.8 KiB
JavaScript
import isEqual from 'lodash/isEqual';
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import { shallowEqual, useSelector } from 'react-redux';
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import {
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getEstimatedGasFeeTimeBounds,
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getGasEstimateType,
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getGasFeeEstimates,
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getIsGasEstimatesLoading,
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getIsNetworkBusy,
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} from '../ducks/metamask/metamask';
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import { useSafeGasEstimatePolling } from './useSafeGasEstimatePolling';
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/**
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* @typedef {object} GasEstimates
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* @property {GasEstimateTypes} gasEstimateType - The type of estimate provided
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* @property {import(
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* '@metamask/controllers'
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* ).GasFeeState['gasFeeEstimates']} gasFeeEstimates - The estimate object
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* @property {import(
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* '@metamask/controllers'
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* ).GasFeeState['estimatedGasFeeTimeBounds']} [estimatedGasFeeTimeBounds] -
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* estimated time boundaries for fee-market type estimates
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* @property {boolean} isGasEstimateLoading - indicates whether the gas
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* estimates are currently loading.
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*/
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/**
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* Gets the current gasFeeEstimates from state and begins polling for new
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* estimates. When this hook is removed from the tree it will signal to the
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* GasFeeController that it is done requiring new gas estimates. Also checks
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* the returned gas estimate for validity on the current network.
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*
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* @returns {GasFeeEstimates} GasFeeEstimates object
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*/
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export function useGasFeeEstimates() {
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const gasEstimateType = useSelector(getGasEstimateType);
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const gasFeeEstimates = useSelector(getGasFeeEstimates, isEqual);
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const estimatedGasFeeTimeBounds = useSelector(
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getEstimatedGasFeeTimeBounds,
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shallowEqual,
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);
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const isGasEstimatesLoading = useSelector(getIsGasEstimatesLoading);
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const isNetworkBusy = useSelector(getIsNetworkBusy);
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useSafeGasEstimatePolling();
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return {
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gasFeeEstimates,
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gasEstimateType,
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estimatedGasFeeTimeBounds,
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isGasEstimatesLoading,
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isNetworkBusy,
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};
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}
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