feat: check if terminal supports TTY

packages/composable-cli/src/commands/generate/d2c/d2c-command.tsx

@@ -39,6 +39,7 @@ import { Option } from "../utils/json-schema"
 import {
   createActiveStoreMiddleware,
   createAuthenticationCheckerMiddleware,
+  createTTYCheckMiddleware,
 } from "../generate-command"
 import { detect } from "../../../lib/detect-package-manager"
 import { getCredentials } from "../../../lib/authentication/get-token"
@@ -70,6 +71,7 @@ export function createD2CCommand(
     describe: "generate Elastic Path storefront",
     builder: async (yargs) => {
       const result = yargs
+        .middleware(createTTYCheckMiddleware(ctx))
         .middleware(createAuthenticationCheckerMiddleware(ctx))
         .middleware(createActiveStoreMiddleware(ctx))
         .positional("location", {

packages/composable-cli/src/commands/generate/generate-command.tsx

@@ -16,8 +16,8 @@ import { isAuthenticated } from "../../util/check-authenticated"
 import { trackCommandHandler } from "../../util/track-command-handler"
 import { isTTY } from "../../util/is-tty"
 import { SetStoreCommandArguments } from "../store/store.types"
-import { renderInfo } from "../ui"
-import { outputContent } from "../output"
+import { renderInfo, renderWarning } from "../ui"
+import { outputContent, outputToken } from "../output"
 import chalk from "chalk"
 
 export function createGenerateCommand(
@@ -110,6 +110,22 @@ export function createAuthenticationCheckerMiddleware(
   }
 }
 
+export function createTTYCheckMiddleware(
+  _ctx: CommandContext,
+): MiddlewareFunction {
+  return async function ttyCheckMiddleware(_args: yargs.ArgumentsCamelCase) {
+    if (!isTTY()) {
+      renderWarning({
+        headline: "Non-interactive environment detected",
+        body: outputContent`This command requires a ${outputToken.cyan(
+          "TTY",
+        )} and may not work in non-interactive environments.`.value,
+      })
+    }
+    return
+  }
+}
+
 export function createActiveStoreMiddleware(
   ctx: CommandContext,
 ): MiddlewareFunction<SetStoreCommandArguments> {

packages/composable-cli/src/util/is-tty.ts

@@ -1,16 +1,14 @@
 export function isTTY(): boolean {
-  const isTruthy = (value: undefined | string) => {
-    // Returns true if value is a string that is anything but 0 or false.
-    return (
-      value !== undefined && value !== "0" && value.toUpperCase() !== "FALSE"
-    )
-  }
-
   // If we force TTY, we always return true.
-  const force = process.env["NG_FORCE_TTY"]
+  const force = process.env["COMPOSABLE_FORCE_TTY"]
   if (force !== undefined) {
     return isTruthy(force)
   }
 
   return !!process.stdout.isTTY && !isTruthy(process.env["CI"])
 }
+
+function isTruthy(value: undefined | string) {
+  // Returns true if value is a string that is anything but 0 or false.
+  return value !== undefined && value !== "0" && value.toUpperCase() !== "FALSE"
+}