fix(lambda): replace package prompt with readline

To get around the colors dependency in prompt

packages/lambda/lib/prompt.js

@@ -1,22 +1,18 @@
 'use strict';
 
-var prompt = require('prompt');
+var chalk = require('chalk');
+var readline = require('readline');
 
 module.exports = function (message) {
-  var yesno = {
-    name: 'yesno',
-    message: message,
-    validator: /y[es]*|n[o]?/i,
-    warning: 'Must respond yes or no',
-    default: 'no',
-  };
+  return new Promise(function (resolve) {
+    var rl = readline.createInterface({
+      input: process.stdin,
+      output: process.stdout,
+    });
 
-  return new Promise(function (resolve, reject) {
-    prompt.get(yesno, function (error, answer) {
-      if (error) {
-        return reject(error);
-      }
-      resolve(answer.yesno[0] === 'y');
+    rl.question(`${message} ${chalk.gray('yes/[no]')}`, function (answer) {
+      rl.close();
+      resolve(/^y(es)?$/i.test(answer));
     });
   });
 };

packages/lambda/package.json

@@ -23,6 +23,7 @@
   "dependencies": {
     "archiver": "^5.0.0",
     "aws-sdk": "^2.546.0",
+    "chalk": "^4.0.0",
     "globby": "^11.0.0",
     "hops-bootstrap": "16.0.0-nightly.0",
     "hops-config": "16.0.0-nightly.0",