Officially drop node 4 support

.travis.yml

@@ -1,7 +1,6 @@
 sudo: false
 language: node_js
 node_js:
-  - 4
   - 6
   - 8
   - node

lib/inquirer.js

@@ -1,3 +1,4 @@
+'use strict';
 /**
  * Inquirer.js
  * A collection of common interactive command line user interfaces.

lib/prompts/base.js

@@ -1,3 +1,4 @@
+'use strict';
 /**
  * Base prompt implementation
  * Should be extended by prompt types.

lib/prompts/checkbox.js

@@ -1,3 +1,4 @@
+'use strict';
 /**
  * `list` type prompt
  */

lib/prompts/confirm.js

@@ -1,3 +1,4 @@
+'use strict';
 /**
  * `confirm` type prompt
  */

lib/prompts/editor.js

@@ -1,3 +1,4 @@
+'use strict';
 /**
  * `editor` type prompt
  */

lib/prompts/expand.js

@@ -1,3 +1,4 @@
+'use strict';
 /**
  * `rawlist` type prompt
  */

lib/prompts/input.js

@@ -1,3 +1,4 @@
+'use strict';
 /**
  * `input` type prompt
  */

lib/prompts/list.js

@@ -1,3 +1,4 @@
+'use strict';
 /**
  * `list` type prompt
  */

lib/prompts/password.js

@@ -1,3 +1,4 @@
+'use strict';
 /**
  * `password` type prompt
  */

lib/prompts/rawlist.js

@@ -1,3 +1,4 @@
+'use strict';
 /**
  * `rawlist` type prompt
  */

lib/ui/bottom-bar.js

@@ -1,3 +1,4 @@
+'use strict';
 /**
  * Sticky bottom bar user interface
  */

package.json

@@ -7,6 +7,9 @@
   "files": ["lib"],
   "main": "lib/inquirer.js",
   "keywords": ["command", "prompt", "stdin", "cli", "tty", "menu"],
+  "engines": {
+    "node": ">=6.0.0"
+  },
   "devDependencies": {
     "chai": "^4.0.1",
     "cmdify": "^0.0.4",
@@ -19,7 +22,7 @@
     "lint-staged": "^5.0.0",
     "mocha": "^4.0.0",
     "mockery": "^2.1.0",
-    "nsp": "^3.1.0",
+    "nsp": "^3.0.0",
     "nyc": "^11.3.0",
     "prettier": "^1.7.0",
     "sinon": "^4.0.0"

yarn.lock

@@ -454,16 +454,10 @@ combined-stream@^1.0.5, combined-stream@~1.0.5:
   dependencies:
     delayed-stream "~1.0.0"
 
-commander@2.11.0, commander@^2.11.0:
+commander@2.11.0, commander@^2.11.0, commander@^2.9.0:
   version "2.11.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.11.0.tgz#157152fd1e7a6c8d98a5b715cf376df928004563"
 
-commander@^2.9.0:
-  version "2.9.0"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.9.0.tgz#9c99094176e12240cb22d6c5146098400fe0f7d4"
-  dependencies:
-    graceful-readlink ">= 1.0.0"
-
 commondir@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/commondir/-/commondir-1.0.1.tgz#ddd800da0c66127393cca5950ea968a3aaf1253b"
@@ -608,14 +602,10 @@ detect-indent@^4.0.0:
   dependencies:
     repeating "^2.0.0"
 
-diff@3.3.1:
+diff@3.3.1, diff@^3.1.0:
   version "3.3.1"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.3.1.tgz#aa8567a6eed03c531fc89d3f711cd0e5259dec75"
 
-diff@^3.1.0:
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/diff/-/diff-3.2.0.tgz#c9ce393a4b7cbd0b058a725c93df299027868ff9"
-
 doctrine@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/doctrine/-/doctrine-2.0.0.tgz#c73d8d2909d22291e1a007a395804da8b665fe63"
@@ -1013,10 +1003,6 @@ graceful-fs@^4.1.11, graceful-fs@^4.1.2:
   version "4.1.11"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.11.tgz#0e8bdfe4d1ddb8854d64e04ea7c00e2a026e5658"
 
-"graceful-readlink@>= 1.0.0":
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/graceful-readlink/-/graceful-readlink-1.0.1.tgz#4cafad76bc62f02fa039b2f94e9a3dd3a391a725"
-
 growl@1.10.3:
   version "1.10.3"
   resolved "https://registry.yarnpkg.com/growl/-/growl-1.10.3.tgz#1926ba90cf3edfe2adb4927f5880bc22c66c790f"
@@ -1739,18 +1725,14 @@ minimatch@^3.0.0, minimatch@^3.0.2, minimatch@^3.0.4:
   dependencies:
     brace-expansion "^1.1.7"
 
-minimist@0.0.8:
+minimist@0.0.8, minimist@~0.0.1:
   version "0.0.8"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
 
 minimist@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
 
-minimist@~0.0.1:
-  version "0.0.10"
-  resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.10.tgz#de3f98543dbf96082be48ad1a0c7cda836301dcf"
-
 mkdirp@0.5.1, mkdirp@^0.5.0, mkdirp@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
@@ -1841,7 +1823,7 @@ npm-which@^3.0.1:
     npm-path "^2.0.2"
     which "^1.2.10"
 
-nsp@^3.1.0:
+nsp@^3.0.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/nsp/-/nsp-3.1.0.tgz#e3d168b01258728ef1cb03fea9ec4f0059c8e3f3"
   dependencies:
@@ -2276,11 +2258,7 @@ right-align@^0.1.1:
   dependencies:
     align-text "^0.1.1"
 
-rimraf@^2.2.8:
-  version "2.2.8"
-  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.2.8.tgz#e439be2aaee327321952730f99a8929e4fc50582"
-
-rimraf@^2.3.3, rimraf@^2.5.4, rimraf@^2.6.1:
+rimraf@^2.2.8, rimraf@^2.3.3, rimraf@^2.5.4, rimraf@^2.6.1:
   version "2.6.2"
   resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.2.tgz#2ed8150d24a16ea8651e6d6ef0f47c4158ce7a36"
   dependencies:
@@ -2436,14 +2414,7 @@ string-width@^1.0.1:
     is-fullwidth-code-point "^1.0.0"
     strip-ansi "^3.0.0"
 
-string-width@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/string-width/-/string-width-2.0.0.tgz#635c5436cc72a6e0c387ceca278d4e2eec52687e"
-  dependencies:
-    is-fullwidth-code-point "^2.0.0"
-    strip-ansi "^3.0.0"
-
-string-width@^2.1.0:
+string-width@^2.0.0, string-width@^2.1.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-2.1.1.tgz#ab93f27a8dc13d28cac815c462143a6d9012ae9e"
   dependencies: