Use exactlyOneOf to check instead

Author: sethvargo

src/main.ts

@@ -26,6 +26,7 @@ import {
 } from '@actions/core';
 import {
   errorMessage,
+  exactlyOneOf,
   parseBoolean,
   presence,
   randomFilename,
@@ -50,8 +51,9 @@ export async function run(): Promise<void> {
     const useConnectGateway = parseBoolean(getInput('use_connect_gateway'));
     const useDNSBasedEndpoint = parseBoolean(getInput('use_dns_based_endpoint'));
 
-    // Only one of use_internal_ip, use_connect_gateway, or use_dns_based_endpoint should be provided
-    if (useInternalIP && useConnectGateway && useDNSBasedEndpoint) {
+    // Only one of use_internal_ip, use_connect_gateway, or
+    // use_dns_based_endpoint should be provided.
+    if ([useInternalIP, useConnectGateway, useDNSBasedEndpoint].filter(Boolean).length > 1) {
       throw new Error(
         'The workflow must specify only one of `use_internal_ip`, `use_connect_gateway`, or `use_dns_based_endpoint`',
       );