19 lines
578 B
TypeScript
19 lines
578 B
TypeScript
import { Token } from 'types/network';
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export function dedupeCustomTokens(networkTokens: Token[], customTokens: Token[]): Token[] {
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if (!customTokens.length) {
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return [];
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}
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// If any tokens have the same symbol or contract address, remove them
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const tokenCollisionMap = networkTokens.reduce<{ [tokenKey: string]: boolean }>((prev, token) => {
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prev[token.symbol] = true;
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prev[token.address] = true;
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return prev;
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}, {});
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return customTokens.filter(token => {
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return !tokenCollisionMap[token.address] && !tokenCollisionMap[token.symbol];
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});
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}
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