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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| /* eslint-disable import/no-extraneous-dependencies */ | ||
| // @ts-check | ||
| import { ethers } from 'ethers'; | ||
| import { exec } from 'child_process'; | ||
| import { promisify } from 'util'; | ||
| import { getDefaultProvider } from '@requestnetwork/payment-detection'; | ||
| import ora from 'ora'; | ||
| import yargs from 'yargs'; | ||
|
|
||
| const erc20Abi = [ | ||
| // Read-Only Functions | ||
| 'function decimals() view returns (uint8)', | ||
| 'function symbol() view returns (string)', | ||
| 'function name() view returns (string)', | ||
| ]; | ||
|
|
||
| type IOptions = { | ||
| address: string; | ||
| network: string; | ||
| skipUpgrade: boolean; | ||
| }; | ||
|
|
||
| const handler = async ({ address, network, skipUpgrade }: IOptions) => { | ||
| const spinner = ora('Initializing...').start(); | ||
| if (!skipUpgrade) { | ||
| spinner.text = 'upgrading @metamask/contract-metadata'; | ||
| await promisify(exec)('yarn add @metamask/contract-metadata --exact'); | ||
| } | ||
|
|
||
| spinner.text = 'Fetch contract metadata'; | ||
|
|
||
| const checksumAddress = ethers.utils.getAddress(address); | ||
|
|
||
| // check if the token exists in the list | ||
| // eslint-disable-next-line @typescript-eslint/no-var-requires | ||
| const metamaskContractMap = require('@metamask/contract-metadata'); | ||
| if (metamaskContractMap[checksumAddress]) { | ||
| console.log(`This token is already listed on @metamask/contract-metadata`); | ||
| return; | ||
| } | ||
|
|
||
| const provider = getDefaultProvider(network); | ||
| const erc20 = new ethers.Contract(address, erc20Abi, provider); | ||
|
|
||
| const decimals = await erc20.decimals(); | ||
| const symbol = await erc20.symbol(); | ||
| const name = await erc20.name(); | ||
|
|
||
| spinner.stop(); | ||
|
|
||
| console.log( | ||
| JSON.stringify( | ||
| { | ||
| [checksumAddress]: { | ||
| name, | ||
| symbol, | ||
| decimals, | ||
| }, | ||
| }, | ||
| null, | ||
| 2, | ||
| ), | ||
| ); | ||
| }; | ||
|
|
||
| yargs(process.argv.slice(2)).command<IOptions>( | ||
| '$0 [address]', | ||
| 'Fetch info about the desired ERC20 token, for the given network', | ||
| (builder) => { | ||
| return builder | ||
| .positional('address', { | ||
| describe: 'The token address', | ||
| type: 'string', | ||
| }) | ||
| .option('network', { | ||
| describe: 'The network of the token (mainnet, rinkeby, matic...)', | ||
| default: 'mainnet', | ||
| }) | ||
| .option('skipUpgrade', { | ||
| describe: 'Skips the @metamask/contract-metadata upgrade', | ||
| default: false, | ||
| type: 'boolean', | ||
| }) | ||
| .demandOption('address'); | ||
| }, | ||
| handler, | ||
| ).argv; |
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