I have:

import sendgridClient from '@sendgrid/client'
sendgridClient.setApiKey(process.env.SENDGRID_API_KEY);

const sendgridRequest = {
        method: 'PUT',
        url: '/v3/marketing/contacts',
        body: {
            list_ids: [myId],
            contacts: [
                {
                    email: req.body.email,
                    custom_fields: {
                        [myFieldId]: 'in_free_trial'
                    }
                }
            ]
        }
    };


await sendgridClient.request(sendgridRequest);

But my TypeScript language server gives me an error about sendgridRequest:

Argument of type '{ method: string; url: string; body: { list_ids: string[]; contacts: { email: any; custom_fields: { e5_T: string; }; }[]; }; }' is not assignable to parameter of type 'ClientRequest'.
  Types of property 'method' are inpatible.
    Type 'string' is not assignable to type 'HttpMethod'.

Is there some way to resolve this?

I have:

import sendgridClient from '@sendgrid/client'
sendgridClient.setApiKey(process.env.SENDGRID_API_KEY);

const sendgridRequest = {
        method: 'PUT',
        url: '/v3/marketing/contacts',
        body: {
            list_ids: [myId],
            contacts: [
                {
                    email: req.body.email,
                    custom_fields: {
                        [myFieldId]: 'in_free_trial'
                    }
                }
            ]
        }
    };


await sendgridClient.request(sendgridRequest);

But my TypeScript language server gives me an error about sendgridRequest:

Argument of type '{ method: string; url: string; body: { list_ids: string[]; contacts: { email: any; custom_fields: { e5_T: string; }; }[]; }; }' is not assignable to parameter of type 'ClientRequest'.
  Types of property 'method' are inpatible.
    Type 'string' is not assignable to type 'HttpMethod'.

Is there some way to resolve this?

• javascript
• node.js
• typescript
• sendgrid
• sendgrid-api-v3

2 Answers 2

Another way of doing this in the absence of the original types:

method: 'PUT' as const,

A string is not assignable to HttpMethod, but the string literal 'PUT' is!

More details: https://stackoverflow./a/66993654/91713

method: 'PUT' in your object is being inferred as string, but it's expecting specific strings like "PUT" | "GET" | "POST". This because it has no specific type to try to match, and by default specific strings are just inferred as string.

You can probably fix this by passing your object directly to the function. This casts the object as the right type because it's checked against what that function accepts:

await sendgridClient.request({
    method: 'PUT',
    url: '/v3/marketing/contacts',
    body: {
        list_ids: [myId],
        contacts: [
            {
                email: req.body.email,
                custom_fields: {
                    [myFieldId]: 'in_free_trial'
                }
            }
        ]
    }
})

Or you can give your intermediate variable the correct type imported from the sendgrid module.

import sendgridClient, { ClientRequest } from '@sendgrid/client'

const sendgridRequest: ClientRequest  = { /* ... */ }
await sendgridClient.request(sendgridRequest);

I wasn't able to test this because this module doesn't seem import into the typescript playground but I think that should work.