verifyIdToken without a service account

[gkiely]

I would like the ability to verify an idToken without the use of a service account, this can be achieved using google-auth-library.
https://developers.google.com/identity/gsi/web/guides/verify-google-id-token#using-a-google-api-client-library

When attempting this I'm getting the following error:

Server error: Public key "..." not found.

[koistya]

@gkiely did you provide projectId of the GCP project that issued the ID token?

web-auth-library/google/idToken.ts

Lines 135 to 150 in 42a722e

	/**
	* Verifies the authenticity of an ID token issued by Google.
	*
	* @example
	* const token = await verifyIdToken({
	* idToken: "eyJhbGciOiJSUzI1NiIsImtpZC...yXQ"
	* projectId: "my-project"
	* waitUntil: ctx.waitUntil,
	* });
	*
	* @example
	* const token = await verifyIdToken({
	* idToken: "eyJhbGciOiJSUzI1NiIsImtpZC...yXQ"
	* waitUntil: ctx.waitUntil,
	* env: { GOOGLE_CLOUD_PROJECT: "my-project" }
	* });