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metamask-extension/shared/modules/transaction.utils.js
Mark Stacey 3732c5f71e
Add JSDoc ESLint rules (#12112)
ESLint rules have been added to enforce our JSDoc conventions. These
rules were introduced by updating `@metamask/eslint-config` to v9.

Some of the rules have been disabled because the effort to fix all lint
errors was too high. It might be easiest to enable these rules one
directory at a time, or one rule at a time.

Most of the changes in this PR were a result of running
`yarn lint:fix`. There were a handful of manual changes that seemed
obvious and simple to make. Anything beyond that and the rule was left
disabled.
2022-01-07 12:27:33 -03:30

64 lines
2.3 KiB
JavaScript

import { isHexString } from 'ethereumjs-util';
export function transactionMatchesNetwork(transaction, chainId, networkId) {
if (typeof transaction.chainId !== 'undefined') {
return transaction.chainId === chainId;
}
return transaction.metamaskNetworkId === networkId;
}
/**
* Determines if the maxFeePerGas and maxPriorityFeePerGas fields are supplied
* and valid inputs. This will return false for non hex string inputs.
*
* @param {import("../constants/transaction").TransactionMeta} transaction -
* the transaction to check
* @returns {boolean} true if transaction uses valid EIP1559 fields
*/
export function isEIP1559Transaction(transaction) {
return (
isHexString(transaction?.txParams?.maxFeePerGas) &&
isHexString(transaction?.txParams?.maxPriorityFeePerGas)
);
}
/**
* Determine if the maxFeePerGas and maxPriorityFeePerGas fields are not
* supplied and that the gasPrice field is valid if it is provided. This will
* return false if gasPrice is a non hex string.
*
* @param {import("../constants/transaction").TransactionMeta} transaction -
* the transaction to check
* @returns {boolean} true if transaction uses valid Legacy fields OR lacks
* EIP1559 fields
*/
export function isLegacyTransaction(transaction) {
return (
typeof transaction.txParams.maxFeePerGas === 'undefined' &&
typeof transaction.txParams.maxPriorityFeePerGas === 'undefined' &&
(typeof transaction.txParams.gasPrice === 'undefined' ||
isHexString(transaction.txParams.gasPrice))
);
}
/**
* Determine if a transactions gas fees in txParams match those in its dappSuggestedGasFees property
*
* @param {import("../constants/transaction").TransactionMeta} transaction -
* the transaction to check
* @returns {boolean} true if both the txParams and dappSuggestedGasFees are objects with truthy gas fee properties,
* and those properties are strictly equal
*/
export function txParamsAreDappSuggested(transaction) {
const { gasPrice, maxPriorityFeePerGas, maxFeePerGas } =
transaction?.txParams || {};
return (
(gasPrice && gasPrice === transaction?.dappSuggestedGasFees?.gasPrice) ||
(maxPriorityFeePerGas &&
maxFeePerGas &&
transaction?.dappSuggestedGasFees?.maxPriorityFeePerGas ===
maxPriorityFeePerGas &&
transaction?.dappSuggestedGasFees?.maxFeePerGas === maxFeePerGas)
);
}