Use hasOwnProperty from prototype

Author: razor-x

lib/io/index.js

@@ -5,6 +5,8 @@ const os = require('os')
 const linux = require('./linux')
 const noop = require('./noop')
 
+const has = (obj, k) => Object.prototype.hasOwnProperty.call(obj, k)
+
 const types = {
   linux,
   darwin: linux,
@@ -20,7 +22,7 @@ const getDefaultType = () => {
 module.exports = (type) => {
   const typeIsNotNil = type != null
   const typeIsCustomObject = typeIsNotNil && typeof type === 'object'
-  const typeIsNotSupported = typeIsNotNil && !types.hasOwnProperty(type)
+  const typeIsNotSupported = typeIsNotNil && !has(types, type)
 
   if (typeIsCustomObject) return type
 

lib/package-checker.js

@@ -60,10 +60,12 @@ const defaultType = () => {
   if (commandExists('pkg')) return 'pkgng'
 }
 
+const has = (obj, k) => Object.prototype.hasOwnProperty.call(obj, k)
+
 module.exports = (type) => {
   const typeIsNotNil = type != null
   const typeIsCustomFunction = typeIsNotNil && typeof type === 'function'
-  const typeIsNotSupported = typeIsNotNil && !types.hasOwnProperty(type)
+  const typeIsNotSupported = typeIsNotNil && !has(types, type)
 
   if (typeIsCustomFunction) return type