process: add input method

FIxes: nodejs#37925

lib/internal/bootstrap/switches/is_main_thread.js

@@ -1,6 +1,6 @@
 'use strict';
 
-const { ObjectDefineProperty } = primordials;
+const { ObjectDefineProperty, FunctionPrototypeApply } = primordials;
 const rawMethods = internalBinding('process_methods');
 
 // TODO(joyeecheung): deprecate and remove these underscore methods
@@ -141,7 +141,7 @@ function getStderr() {
   return stderr;
 }
 
-function getStdin() {
+function getStdin () {
   if (stdin) return stdin;
   const fd = 0;
 
@@ -233,3 +233,19 @@ rawMethods.resetStdioForTesting = function() {
   stdout = undefined;
   stderr = undefined;
 };
+
+
+process.input = async function (...args) {
+  const utils = require("util")
+  const { createInterface } = require('readline')
+
+  const rl = createInterface({
+    input: process.stdin,
+    output: process.stdout
+  })
+
+  const res = await FunctionPrototypeApply(utils.promisify(rl.question), rl, args)
+  // Close Readline to avoid process hang
+  rl.close()
+  return res
+}

test/pseudo-tty/test-process-input.in

@@ -0,0 +1 @@
+answer

test/pseudo-tty/test-process-input.js

@@ -0,0 +1,6 @@
+const common = require('../common')
+const assert = require('assert')
+
+process.input('question here').then(common.mustCall((res) => {
+  assert.strictEqual(res, "answer")
+}))

test/pseudo-tty/test-process-input.out

@@ -0,0 +1,2 @@
+answer
+[1G[0Jquestion here[14Ganswer