@xspswap/smart-order-router
Version:
XSwap Protocol V3 Smart Order Router
28 lines • 2.01 kB
JavaScript
import { IGasPriceProvider } from './gas-price-provider';
const DEFAULT_EIP_1559_SUPPORTED_CHAINS = [
// ChainId.XDC,
//TODO: add XDC
];
/**
* Gets gas prices on chain. If the chain supports EIP-1559 and has the feeHistory API,
* uses the EIP1559 provider. Otherwise it will use a legacy provider that uses eth_gasPrice
*
* @export
* @class OnChainGasPriceProvider
*/
export class OnChainGasPriceProvider extends IGasPriceProvider {
constructor(chainId, eip1559GasPriceProvider, legacyGasPriceProvider, eipChains = DEFAULT_EIP_1559_SUPPORTED_CHAINS) {
super();
this.chainId = chainId;
this.eip1559GasPriceProvider = eip1559GasPriceProvider;
this.legacyGasPriceProvider = legacyGasPriceProvider;
this.eipChains = eipChains;
}
async getGasPrice() {
if (this.eipChains.includes(this.chainId)) {
return this.eip1559GasPriceProvider.getGasPrice();
}
return this.legacyGasPriceProvider.getGasPrice();
}
}
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