22 lines
914 B
TypeScript
22 lines
914 B
TypeScript
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import { Currency, Token } from '@uniswap/sdk-core'
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import { useMemo } from 'react'
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import { useUnsupportedTokens } from './Tokens'
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/**
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* Returns true if the input currency or output currency cannot be traded in the interface
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* @param currencyIn the input currency to check
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* @param currencyOut the output currency to check
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*/
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export function useIsSwapUnsupported(currencyIn?: Currency, currencyOut?: Currency): boolean {
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const unsupportedTokens: { [address: string]: Token } = useUnsupportedTokens()
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return useMemo(() => {
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// if unsupported list loaded & either token on list, mark as unsupported
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return Boolean(
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unsupportedTokens &&
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((currencyIn && currencyIn instanceof Token && unsupportedTokens[currencyIn.address]) ||
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(currencyOut && currencyOut instanceof Token && unsupportedTokens[currencyOut.address]))
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)
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}, [currencyIn, currencyOut, unsupportedTokens])
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}
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