adds backwards compatibility instead

index.mjs

@@ -14,6 +14,7 @@
 
 import {existsSync} from 'fs'
 import {exec, execSync} from 'child_process'
+import {promisify} from 'util'
 import {createInterface} from 'readline'
 import {default as nodeFetch} from 'node-fetch'
 import chalk from 'chalk'
@@ -102,7 +103,11 @@ export async function question(query, options) {
     output: process.stdout,
     completer,
   })
-  const question = (q) => new Promise((resolve) => rl.question(q, resolve));
+  let question = promisify(rl.question).bind(rl)
+  if (!rl.question[promisify.custom]) {
+    // Backwards compatibility for node < v15.8.0 
+     question = (q) => new Promise((resolve) => rl.question(q, resolve));
+  }
   let answer = await question(query)
   rl.close()
   return answer