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3732c5f71e
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.
59 lines
2.3 KiB
JavaScript
59 lines
2.3 KiB
JavaScript
import { useMemo } from 'react';
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import {
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getTokenValueParam,
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calcTokenAmount,
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} from '../helpers/utils/token-util';
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import { useTokenData } from './useTokenData';
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/**
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* Defines the shape for the Token input parameter for useTokenDisplayValue
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*
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* @typedef {Object} Token
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* @property {string} symbol - The string to use as a suffix for the token (eg. DAI)
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* @property {number} decimals - The number of decimals to show when displaying this type of token
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*/
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/**
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* useTokenDisplayValue
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* Given the data string from txParams and a token object with symbol and decimals, return
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* a displayValue that represents a string representing that token amount as a string. Also
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* return a tokenData object for downstream usage and the suffix for the token to use as props
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* for other hooks and/or components
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*
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* @param {string} [transactionData] - Raw data string from token transaction
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* @param {Token} [token] - The token associated with this transaction
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* @param {boolean} [isTokenTransaction] - Due to the nature of hooks, it isn't possible
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* to conditionally call this hook. This flag will
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* force this hook to return null if it set as false
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* which indicates the transaction is not associated
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* with a token.
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* @returns {string} The computed displayValue of the provided transactionData and token
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*/
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export function useTokenDisplayValue(
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transactionData,
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token,
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isTokenTransaction = true,
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) {
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const tokenData = useTokenData(transactionData, isTokenTransaction);
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const shouldCalculateTokenValue = Boolean(
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// If we are currently processing a token transaction
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isTokenTransaction &&
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// and raw transaction data string is provided
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transactionData &&
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// and a token object has been provided
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token &&
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// and we are able to parse the token details from the raw data
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tokenData?.args?.length,
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);
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const displayValue = useMemo(() => {
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if (!shouldCalculateTokenValue) {
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return null;
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}
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const tokenValue = getTokenValueParam(tokenData);
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return calcTokenAmount(tokenValue, token.decimals).toString(10);
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}, [shouldCalculateTokenValue, tokenData, token]);
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return displayValue;
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}
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