'TS - NodeMailer OAuth2 'auth' does not exist in type 'TransportOptions

I have a problem. I need to make email sending function with Gmail api. In docs it tells me to make a createTransport function like this:

    const transport = nodemailer.createTransport({
      service: "gmail",
      auth: {
        type: "OAuth2",
        user: "[email protected]",
        clientId: CLIENT_ID,
        clientSecret: CLIENT_SECRET,
        refreshToken: REFRESH_TOKEN,
        accessToken: accessToken,
      },
    })

DOCS

But it all turns red and returns: Error

Any solution? Thanks.

node.jstypescriptnodemailer


Solution 1:[1]

There is a problem of type script when you tring to pass the accessToken because in google oauth2client the return type of getAccessToken() is https://github.com/googleapis/google-auth-library-nodejs/blob/b0ddb7512fb9ed1e51b6874b7376d7e1f26be644/src/auth/oauth2client.ts#L331

that not supported by the types of nodemailer that should be string: https://github.com/DefinitelyTyped/DefinitelyTyped/blob/7827d853a1d623dd5345d9a11ced3e15eb5d3d8b/types/nodemailer/lib/xoauth2.d.ts#L24

by looking at the return type of the getAccessToken you can see that the token is inside that have type string so to fix that just destructure your token from the accessToken.

const transport = nodemailer.createTransport({
  service: "gmail",
  auth: {
    type: "OAuth2",
    user: "[email protected]",
    clientId: CLIENT_ID,
    clientSecret: CLIENT_SECRET,
    refreshToken: REFRESH_TOKEN,
    accessToken: accessToken.token,
  },
})

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Roy Canani

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