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metamask-extension/ui/hooks/useCurrentAsset.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

42 lines
1.4 KiB
JavaScript

import { useSelector } from 'react-redux';
import { useRouteMatch } from 'react-router-dom';
import { getTokens } from '../ducks/metamask/metamask';
import { getCurrentChainId } from '../selectors';
import { ASSET_ROUTE } from '../helpers/constants/routes';
import { isEqualCaseInsensitive } from '../helpers/utils/util';
import {
SWAPS_CHAINID_DEFAULT_TOKEN_MAP,
ETH_SWAPS_TOKEN_OBJECT,
} from '../../shared/constants/swaps';
/**
* Returns a token object for the asset that is currently being viewed.
* Will return the default token object for the current chain when the
* user is viewing either the primary, unfiltered, activity list or the
* default token asset page.
*
* @returns {import('./useTokenDisplayValue').Token}
*/
export function useCurrentAsset() {
// To determine which primary currency to display for swaps transactions we need to be aware
// of which asset, if any, we are viewing at present
const match = useRouteMatch({
path: `${ASSET_ROUTE}/:asset`,
exact: true,
strict: true,
});
const tokenAddress = match?.params?.asset;
const knownTokens = useSelector(getTokens);
const token =
tokenAddress &&
knownTokens.find(({ address }) =>
isEqualCaseInsensitive(address, tokenAddress),
);
const chainId = useSelector(getCurrentChainId);
return (
token ??
(SWAPS_CHAINID_DEFAULT_TOKEN_MAP[chainId] || ETH_SWAPS_TOKEN_OBJECT)
);
}