From e4556412bc5a01e70a821331673c05724941e6ec Mon Sep 17 00:00:00 2001
From: Daniel Trojanowski <daniel.trojanowski@gmail.com>
Date: Tue, 7 Aug 2018 09:26:20 +0200
Subject: [PATCH] Allow to run `apollo codegen:generate --watch` on no tty
 devices

---
 packages/apollo-cli/src/commands/codegen/generate.ts | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/packages/apollo-cli/src/commands/codegen/generate.ts b/packages/apollo-cli/src/commands/codegen/generate.ts
index 60eb53e704..d05177eda1 100644
--- a/packages/apollo-cli/src/commands/codegen/generate.ts
+++ b/packages/apollo-cli/src/commands/codegen/generate.ts
@@ -2,6 +2,7 @@ import "apollo-codegen-core/lib/polyfills";
 import { Command, flags } from "@oclif/command";
 import * as Listr from "listr";
 import * as path from "path";
+import * as tty from "tty";
 
 import { TargetType, default as generate } from "../../generate";
 
@@ -245,8 +246,10 @@ export default class Generate extends Command {
         console.log("\nChange detected, generating types...");
         tasks.run().catch(() => {});
       });
-      await waitForKey();
-      watcher.close();
+      if (tty.isatty((process.stdin as any).fd)) {
+        await waitForKey();
+        watcher.close();
+      }
       return;
     } else {
       return tasks.run();