interface Config { networkId: string, nodeUrl: string, contractName: null, walletUrl: string, initialBalance: string } export function getConfig(networkName: string, nodeUrl?: string): Config { let network: Config; switch(networkName) { default : network = { networkId: 'testnet', nodeUrl: nodeUrl || 'https://rpc.testnet.near.org', contractName: null, walletUrl: 'https://wallet.testnet.near.org', initialBalance: "100000000" }; } return network; }