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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| import 'dotenv/config'; | ||
| const { | ||
| INFURA_KEY, | ||
| QUICKNODE_KEY | ||
| } = process.env; | ||
|
|
||
| const configs = { | ||
| mainnet: { | ||
| url: 'https://mainnet.infura.io/v3/' + INFURA_KEY, | ||
| }, | ||
| sepolia: { | ||
| url: 'https://sepolia.infura.io/v3/' + INFURA_KEY, | ||
| }, | ||
| polygon: { | ||
| url: 'https://polygon-mainnet.infura.io/v3/' + INFURA_KEY, | ||
| }, | ||
| optimism: { | ||
| url: 'https://optimism-mainnet.infura.io/v3/' + INFURA_KEY, | ||
| }, | ||
| base: { | ||
| url: 'https://fluent-prettiest-scion.base-mainnet.quiknode.pro/' + QUICKNODE_KEY, | ||
| }, | ||
| arbitrum: { | ||
| url: 'https://arbitrum-mainnet.infura.io/v3/' + INFURA_KEY, | ||
| }, | ||
| avalanche: { | ||
| url: 'https://api.avax.network/ext/bc/C/rpc', | ||
| }, | ||
| fuji: { | ||
| url: 'https://api.avax-test.network/ext/bc/C/rpc', | ||
| }, | ||
| mumbai: { | ||
| url: 'https://polygon-mumbai.infura.io/v3/' + INFURA_KEY, | ||
| }, | ||
| arbitrumGoerli: { | ||
| url: 'https://arbitrum-goerli.infura.io/v3/' + INFURA_KEY, | ||
| }, | ||
| baseGoerli: { | ||
| url: 'https://goerli.base.org/', | ||
| }, | ||
| lineaGoerli: { | ||
| url: 'https://linea-goerli.infura.io/v3/' + INFURA_KEY, | ||
| }, | ||
| scrollGoerli: { | ||
| url: 'https://alpha-rpc.scroll.io/l2', | ||
| }, | ||
| scroll: { | ||
| url: 'https://rpc.scroll.io', | ||
| } | ||
| }; | ||
|
|
||
| export async function getSymbol( | ||
| address: string, | ||
| network: string | ||
| ) : Promise<string> { | ||
| const link = configs[network].url; | ||
| try { | ||
| const response = await fetch(link, { | ||
| method: 'POST', | ||
| headers: { | ||
| 'Content-Type': 'application/json' | ||
| }, | ||
| body: JSON.stringify({ | ||
| jsonrpc: '2.0', | ||
| method: 'eth_call', | ||
| params: [ | ||
| { | ||
| to: address, | ||
| data: '0x95d89b41' | ||
| }, | ||
| 'latest' | ||
| ], | ||
| id: 1 | ||
| }) | ||
| }); | ||
|
|
||
| const data = await response.json(); | ||
| if(data.result.length <= 2) { | ||
| throw new Error('Error fetching symbol from address: ' + address); | ||
| } | ||
| const hexString = data.result.slice(2); | ||
| const relevantHex = hexString.slice(64); | ||
| const lengthHex = relevantHex.slice(0, 64); | ||
| const length = parseInt(lengthHex, 16); | ||
| const stringHex = relevantHex.slice(64, 64 + length * 2); | ||
| const bytes = new Uint8Array(stringHex.match(/.{1,2}/g).map((byte: string) => parseInt(byte, 16))); | ||
| const symbol = new TextDecoder().decode(bytes); | ||
| return(symbol); | ||
| } catch (error) { | ||
| throw new Error('Error fetching symbol: ' + error); | ||
| } | ||
| } |