better default handling in prompts

Author: wesleytodd

lib/prompts.js

@@ -106,22 +106,22 @@ async function promptForScripts (opts = {}, options = {}) {
     name: 'prepare',
     message: 'Prepare script [run before publish and on local install]:',
     default: s.prepare,
-    when: opts.extended && (!options.scripts || !options.scripts.prepare)
+    when: opts.extended && (!options.scripts || typeof options.scripts.prepare === 'undefined')
   }, {
     name: 'prepublushOnly',
     message: 'Pre publush script [run only before publish]:',
     default: s.prepublushOnly || 'npm t',
-    when: !options.scripts || !options.scripts.prepublushOnly
+    when: !options.scripts || typeof options.scripts.prepublishOnly === 'undefined'
   }, {
     name: 'postpublish',
     message: 'Post publish script:',
     default: s.postpublish,
-    when: opts.extended && (!options.scripts || !options.scripts.postpublish)
+    when: opts.extended && (!options.scripts || typeof options.scripts.postpublish === 'undefined')
   }, {
     name: 'preversion',
     message: 'Pre version script:',
     default: s.preversion,
-    when: opts.extended && (!options.scripts || !options.scripts.preversion)
+    when: opts.extended && (!options.scripts || typeof options.scripts.preversion === 'undefined')
   }])
 
   // Merge scripts and add any customs