fix exporting and doc generation missing types

test/CONSTANTS.ts

@@ -5,7 +5,7 @@ export const TEST_CONFIG = {
 }
 export const TEST_DATA = "test123123"
 
-const fetch = require('node-fetch')
+import fetch from 'node-fetch';
 
 export const makeTestnetWallet = () : Promise<Wallet> => fetch('https://faucet.altnet.rippletest.net/accounts', {
     method: 'POST',
@@ -13,7 +13,7 @@ export const makeTestnetWallet = () : Promise<Wallet> => fetch('https://faucet.a
         'Accept': 'application/json',
         'Content-Type': 'application/json'
     },
-}).then(raw => {
+}).then((raw:any) => {
     return raw.json().then(content => {
         return({
             secret: content.account.secret,