mirror of
https://github.com/kremalicious/metamask-extension.git
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80 lines
2.6 KiB
JavaScript
80 lines
2.6 KiB
JavaScript
import { useEffect } from 'react';
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import { useSelector } from 'react-redux';
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import { GAS_ESTIMATE_TYPES } from '../../shared/constants/gas';
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import {
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getEstimatedGasFeeTimeBounds,
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getGasEstimateType,
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getGasFeeEstimates,
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isEIP1559Network,
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} from '../ducks/metamask/metamask';
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import {
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disconnectGasFeeEstimatePoller,
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getGasFeeEstimatesAndStartPolling,
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} from '../store/actions';
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/**
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* @typedef {keyof typeof GAS_ESTIMATE_TYPES} GasEstimateTypes
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*/
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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 supportsEIP1559 = useSelector(isEIP1559Network);
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const gasEstimateType = useSelector(getGasEstimateType);
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const gasFeeEstimates = useSelector(getGasFeeEstimates);
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const estimatedGasFeeTimeBounds = useSelector(getEstimatedGasFeeTimeBounds);
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useEffect(() => {
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let active = true;
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let pollToken;
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getGasFeeEstimatesAndStartPolling().then((newPollToken) => {
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if (active) {
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pollToken = newPollToken;
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} else {
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disconnectGasFeeEstimatePoller(newPollToken);
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}
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});
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return () => {
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active = false;
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if (pollToken) {
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disconnectGasFeeEstimatePoller(pollToken);
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}
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};
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}, []);
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// We consider the gas estimate to be loading if the gasEstimateType is
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// 'NONE' or if the current gasEstimateType does not match the type we expect
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// for the current network. e.g, a ETH_GASPRICE estimate when on a network
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// supporting EIP-1559.
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const isGasEstimatesLoading =
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gasEstimateType === GAS_ESTIMATE_TYPES.NONE ||
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(supportsEIP1559 && gasEstimateType !== GAS_ESTIMATE_TYPES.FEE_MARKET) ||
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(!supportsEIP1559 && gasEstimateType === GAS_ESTIMATE_TYPES.FEE_MARKET);
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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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};
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}
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