Inherit stdin on access stdout & stderr

examples/interactive.mjs

@@ -0,0 +1,36 @@
+#!/usr/bin/env zx
+
+// Copyright 2021 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+let {stdin, stdout} = $`npm init`
+
+let put = text => {
+  stdin.write(text)
+  process.stdout.write(text)
+}
+
+for await (let chunk of stdout) {
+  if (chunk.includes('package name:')) put('test\n')
+  if (chunk.includes('version:')) put('1.0.0\n')
+  if (chunk.includes('description:')) put('My test package\n')
+  if (chunk.includes('entry point:')) put('index.mjs\n')
+  if (chunk.includes('test command:')) put('test.mjs\n')
+  if (chunk.includes('git repository:')) put('my-org/repo\n')
+  if (chunk.includes('keywords:')) put('foo, bar\n')
+  if (chunk.includes('author:')) put('Anton Medvedev\n')
+  if (chunk.includes('license:')) put('MIT\n')
+  if (chunk.includes('Is this OK?')) put('yes\n')
+}

index.mjs

@@ -195,11 +195,13 @@ export class ProcessPromise extends Promise {
   }
 
   get stdout() {
+    this._inheritStdin = false
     this._run()
     return this.child.stdout
   }
 
   get stderr() {
+    this._inheritStdin = false
     this._run()
     return this.child.stderr
   }