Docusign run code grant steps programmatically in node? - node.js

Question

New to docusign and have been reading the docs, and I can't seem to get around these problems.
Per the docs it says that gets a code getAuthorizationUri() which can then be used by generateAccessToken() to get a token. After that, the token can be used to explore the API with other methods.
I'm stuck in two places: First I configured my get Authorization like this (typescript)
import { ApiClient } from 'docusign-esign'
const apiClient = new ApiClient()
const url: string = apiClient.getAuthorizationUri(
config.docusign.INTERGRATION_KEY,
['signature'],
'http://localhost/',
'code',
'ready'
)
console.log(url)
I get the url fine, but it is always starts with acccounts.docusign as opposed to the required account-d.docusign that's required because my app is in dev.
Secondly, I can't figure out how to transition that URL into a code programtically. Yes, I can copy and paste it from the browser URL (as in the instruction videos), but obviously my next step is to run something like:
async getToken(authCode){
const token = await apiClient.generateAccessToken(
INTERGRATION_KEY,
SECRET_KEY,
authCode
)
console.log(token)
return token
}

Answer 1

To change authentication from prod to demo, you need to make this call:
apiClient.setOAuthBasePath("account-d.docusign.com");
You may also want to change the URL for API calls if you use this later like this:
apiClient.setBasePath("https://demo.docusign.net/restapi");
I suggest using an OAuth npm package and not doing this yourself.
See how it's done in the quickstart (Pick Node.js and Auth Code Grant)