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metamask-extension/shared/constants/tokens.js

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import contractMap from '@metamask/contract-metadata';
/**
* A normalized list of addresses exported as part of the contractMap in
* `@metamask/contract-metadata`. Used primarily to validate if manually entered
* contract addresses do not match one of our listed tokens
*/
export const LISTED_CONTRACT_ADDRESSES = Object.keys(
contractMap,
).map((address) => address.toLowerCase());
/**
* @typedef {Object} TokenDetails
* @property {string} address - The address of the selected 'TOKEN' or
* 'COLLECTIBLE' contract.
* @property {string} [symbol] - The symbol of the token.
* @property {number} [decimals] - The number of decimals of the selected
* 'ERC20' asset.
* @property {number} [tokenId] - The id of the selected 'COLLECTIBLE' asset.
* @property {TokenStandardStrings} [standard] - The standard of the selected
* asset.
* @property {boolean} [isERC721] - True when the asset is a ERC721 token.
*/