`addPermission() has no effect on a Lambda Function with region=${this.env.region}, account=${this.env.account}, in a Stack with region=${Stack.of(this).region}, account=${Stack.of(this).account}. Suppress this warning if this is is intentional, or pass sameEnvironment=true to fromFunctionAttributes() if you would like to add the permissions.`

import * as cdk from 'aws-cdk-lib';
import { Construct } from 'constructs';
import * as lambda from 'aws-cdk-lib/aws-lambda'
import * as apigateway from 'aws-cdk-lib/aws-apigateway'

export class CdkTestStack extends cdk.Stack {
  constructor(scope: Construct, id: string, props?: cdk.StackProps) {
    super(scope, id, props);

    const authFunc = lambda.Function.fromFunctionArn(this,'AuthFunction', 'arn:aws:lambda:eu-west-1:000000000000:function:AuthFunction')

    const authorizer = new apigateway.TokenAuthorizer(this, 'TokenAuthorizer', {
      handler: authFunc,
    })

    const restApi = new apigateway.RestApi(this, 'RestApi', {})
    restApi.root.addResource('hello').addMethod('GET', new apigateway.MockIntegration(), {
      authorizer: authorizer
    })
  }
}

const authFunc = lambda.Function.fromFunctionAttributes(this,'AuthFunction', {
  functionArn: 'arn:aws:lambda:eu-west-1:000000000000:function:AuthFunction',
  sameEnvironment: true,
})

lambda.Function.fromFunctionAttributes(this,'AuthFunction', {
  functionArn: 'arn:aws:lambda:eu-west-1:000000000000:function:AuthFunction',
  skipPermissions: true
})