[eas-cli] print no vcs warning only once

packages/eas-cli/src/vcs/index.ts

@@ -7,14 +7,19 @@ import { Client } from './vcs';
 
 const NO_VCS_WARNING = `Using EAS CLI without version control system is not recommended, use this mode only if you know what you are doing.`;
 
+let wasNoVcsWarningPrinted = false;
+
 export function resolveVcsClient(requireCommit: boolean = false): Client {
   if (process.env.EAS_NO_VCS) {
     if (process.env.NODE_ENV !== 'test') {
-      // This log might be printed before cli arguments are evaluated,
-      // so it needs to go to stderr in case command is run in JSON
-      // only mode.
-      // eslint-disable-next-line no-console
-      console.error(chalk.yellow(NO_VCS_WARNING));
+      if (!wasNoVcsWarningPrinted) {
+        // This log might be printed before cli arguments are evaluated,
+        // so it needs to go to stderr in case command is run in JSON
+        // only mode.
+        // eslint-disable-next-line no-console
+        console.error(chalk.yellow(NO_VCS_WARNING));
+        wasNoVcsWarningPrinted = true;
+      }
     }
     return new NoVcsClient();
   }