diff --git a/.all-contributorsrc b/.all-contributorsrc
index 1b3cf2e..501b968 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -369,6 +369,17 @@
         "code",
         "doc"
       ]
+    },
+    {
+      "login": "SleepWalker",
+      "name": "Sviatoslav",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/2536916?v=4",
+      "profile": "https://github.com/SleepWalker",
+      "contributions": [
+        "bug",
+        "code"
+      ]
     }
-  ]
+  ],
+  "repoType": "github"
 }
diff --git a/README.md b/README.md
index f7b138c..167f1d4 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ All the benefits of npm scripts without the cost of a bloated package.json and l
 [![downloads][downloads-badge]][npm-stat]
 [![MIT License][license-badge]][LICENSE]
 
-[![All Contributors](https://img.shields.io/badge/all_contributors-36-orange.svg?style=flat-square)](#contributors)
+[![All Contributors](https://img.shields.io/badge/all_contributors-37-orange.svg?style=flat-square)](#contributors)
 [![PRs Welcome][prs-badge]][prs]
 [![Donate][donate-badge]][donate]
 [![Code of Conduct][coc-badge]][coc]
@@ -483,13 +483,14 @@ page.
 Thanks goes to these people ([emoji key][emojis]):
 
 <!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
-| [<img src="https://avatars.githubusercontent.com/u/1500684?v=3" width="100px;"/><br /><sub>Kent C. Dodds</sub>](http://kent.doddsfamily.us)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=kentcdodds "Code") [📖](https://github.com/kentcdodds/p-s/commits?author=kentcdodds "Documentation") [🚇](#infra-kentcdodds "Infrastructure (Hosting, Build-Tools, etc)") [💡](#example-kentcdodds "Examples") [📹](#video-kentcdodds "Videos") [👀](#review-kentcdodds "Reviewed Pull Requests") | [<img src="https://avatars.githubusercontent.com/u/532272?v=3" width="100px;"/><br /><sub>David Wells</sub>](http://davidwells.io)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=DavidWells "Code") | [<img src="https://avatars.githubusercontent.com/u/802242?v=3" width="100px;"/><br /><sub>Abhishek Shende</sub>](https://twitter.com/abhishekisnot)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=abhishekisnot "Code") [⚠️](https://github.com/kentcdodds/p-s/commits?author=abhishekisnot "Tests") | [<img src="https://avatars.githubusercontent.com/u/185649?v=3" width="100px;"/><br /><sub>Rowan Oulton</sub>](http://travelog.io)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=rowanoulton "Code") [📖](https://github.com/kentcdodds/p-s/commits?author=rowanoulton "Documentation") [⚠️](https://github.com/kentcdodds/p-s/commits?author=rowanoulton "Tests") | [<img src="https://avatars.githubusercontent.com/u/1915716?v=3" width="100px;"/><br /><sub>Gilad Goldberg</sub>](https://github.com/giladgo)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=giladgo "Code") | [<img src="https://avatars.githubusercontent.com/u/14267457?v=3" width="100px;"/><br /><sub>Tim McGee</sub>](https://github.com/tim-mcgee)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=tim-mcgee "Code") [📖](https://github.com/kentcdodds/p-s/commits?author=tim-mcgee "Documentation") | [<img src="https://avatars.githubusercontent.com/u/175264?v=3" width="100px;"/><br /><sub>Nik Butenko</sub>](http://butenko.me)<br />[💡](#example-nkbt "Examples") [💻](https://github.com/kentcdodds/p-s/commits?author=nkbt "Code") |
+<!-- prettier-ignore -->
+| [<img src="https://avatars.githubusercontent.com/u/1500684?v=3" width="100px;"/><br /><sub><b>Kent C. Dodds</b></sub>](http://kent.doddsfamily.us)<br />[💻](/kentcdodds/p-s/commits?author=kentcdodds "Code") [📖](/kentcdodds/p-s/commits?author=kentcdodds "Documentation") [🚇](#infra-kentcdodds "Infrastructure (Hosting, Build-Tools, etc)") [💡](#example-kentcdodds "Examples") [📹](#video-kentcdodds "Videos") [👀](#review-kentcdodds "Reviewed Pull Requests") | [<img src="https://avatars.githubusercontent.com/u/532272?v=3" width="100px;"/><br /><sub><b>David Wells</b></sub>](http://davidwells.io)<br />[💻](/kentcdodds/p-s/commits?author=DavidWells "Code") | [<img src="https://avatars.githubusercontent.com/u/802242?v=3" width="100px;"/><br /><sub><b>Abhishek Shende</b></sub>](https://twitter.com/abhishekisnot)<br />[💻](/kentcdodds/p-s/commits?author=abhishekisnot "Code") [⚠️](/kentcdodds/p-s/commits?author=abhishekisnot "Tests") | [<img src="https://avatars.githubusercontent.com/u/185649?v=3" width="100px;"/><br /><sub><b>Rowan Oulton</b></sub>](http://travelog.io)<br />[💻](/kentcdodds/p-s/commits?author=rowanoulton "Code") [📖](/kentcdodds/p-s/commits?author=rowanoulton "Documentation") [⚠️](/kentcdodds/p-s/commits?author=rowanoulton "Tests") | [<img src="https://avatars.githubusercontent.com/u/1915716?v=3" width="100px;"/><br /><sub><b>Gilad Goldberg</b></sub>](https://github.com/giladgo)<br />[💻](/kentcdodds/p-s/commits?author=giladgo "Code") | [<img src="https://avatars.githubusercontent.com/u/14267457?v=3" width="100px;"/><br /><sub><b>Tim McGee</b></sub>](https://github.com/tim-mcgee)<br />[💻](/kentcdodds/p-s/commits?author=tim-mcgee "Code") [📖](/kentcdodds/p-s/commits?author=tim-mcgee "Documentation") | [<img src="https://avatars.githubusercontent.com/u/175264?v=3" width="100px;"/><br /><sub><b>Nik Butenko</b></sub>](http://butenko.me)<br />[💡](#example-nkbt "Examples") [💻](/kentcdodds/p-s/commits?author=nkbt "Code") |
 | :---: | :---: | :---: | :---: | :---: | :---: | :---: |
-| [<img src="https://avatars.githubusercontent.com/u/1972567?v=3" width="100px;"/><br /><sub>Tommy</sub>](http://www.tommyleunen.com)<br />[🐛](https://github.com/kentcdodds/p-s/issues?q=author%3Atleunen "Bug reports") [💻](https://github.com/kentcdodds/p-s/commits?author=tleunen "Code") [⚠️](https://github.com/kentcdodds/p-s/commits?author=tleunen "Tests") [👀](#review-tleunen "Reviewed Pull Requests") | [<img src="https://avatars.githubusercontent.com/u/509946?v=3" width="100px;"/><br /><sub>Jayson Harshbarger</sub>](http://www.hypercubed.com)<br />[💡](#example-Hypercubed "Examples") [👀](#review-Hypercubed "Reviewed Pull Requests") | [<img src="https://avatars.githubusercontent.com/u/1355481?v=3" width="100px;"/><br /><sub>JD Isaacks</sub>](http://www.jisaacks.com)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=jisaacks "Code") [⚠️](https://github.com/kentcdodds/p-s/commits?author=jisaacks "Tests") | [<img src="https://avatars.githubusercontent.com/u/924465?v=3" width="100px;"/><br /><sub>Christopher Hiller</sub>](https://boneskull.com)<br />[👀](#review-boneskull "Reviewed Pull Requests") [🐛](https://github.com/kentcdodds/p-s/issues?q=author%3Aboneskull "Bug reports") [💻](https://github.com/kentcdodds/p-s/commits?author=boneskull "Code") [📖](https://github.com/kentcdodds/p-s/commits?author=boneskull "Documentation") [⚠️](https://github.com/kentcdodds/p-s/commits?author=boneskull "Tests") | [<img src="https://avatars.githubusercontent.com/u/1834413?v=3" width="100px;"/><br /><sub>Robin Malfait</sub>](https://robinmalfait.com)<br />[💡](#example-RobinMalfait "Examples") | [<img src="https://avatars.githubusercontent.com/u/622118?v=3" width="100px;"/><br /><sub>Eric McCormick</sub>](https://ericmccormick.io)<br />[👀](#review-edm00se "Reviewed Pull Requests") [📖](https://github.com/kentcdodds/p-s/commits?author=edm00se "Documentation") | [<img src="https://avatars.githubusercontent.com/u/1913805?v=3" width="100px;"/><br /><sub>Sam Verschueren</sub>](https://twitter.com/SamVerschueren)<br />[👀](#review-SamVerschueren "Reviewed Pull Requests") |
-| [<img src="https://avatars.githubusercontent.com/u/1155589?v=3" width="100px;"/><br /><sub>Sorin Muntean</sub>](https://github.com/sxn)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=sxn "Code") [⚠️](https://github.com/kentcdodds/p-s/commits?author=sxn "Tests") [📖](https://github.com/kentcdodds/p-s/commits?author=sxn "Documentation") | [<img src="https://avatars.githubusercontent.com/u/1970063?v=3" width="100px;"/><br /><sub>Keith Gunn</sub>](https://github.com/gunnx)<br />[🐛](https://github.com/kentcdodds/p-s/issues?q=author%3Agunnx "Bug reports") [💻](https://github.com/kentcdodds/p-s/commits?author=gunnx "Code") [⚠️](https://github.com/kentcdodds/p-s/commits?author=gunnx "Tests") | [<img src="https://avatars.githubusercontent.com/u/1019478?v=3" width="100px;"/><br /><sub>Joe Martella</sub>](http://martellaj.github.io)<br />[🐛](https://github.com/kentcdodds/p-s/issues?q=author%3Amartellaj "Bug reports") [💻](https://github.com/kentcdodds/p-s/commits?author=martellaj "Code") [⚠️](https://github.com/kentcdodds/p-s/commits?author=martellaj "Tests") | [<img src="https://avatars.githubusercontent.com/u/1887854?v=3" width="100px;"/><br /><sub>Martin Segado</sub>](https://github.com/msegado)<br />[📖](https://github.com/kentcdodds/p-s/commits?author=msegado "Documentation") | [<img src="https://avatars.githubusercontent.com/u/36491?v=3" width="100px;"/><br /><sub>Bram Borggreve</sub>](http://colmena.io/)<br />[🐛](https://github.com/kentcdodds/p-s/issues?q=author%3Abeeman "Bug reports") [💻](https://github.com/kentcdodds/p-s/commits?author=beeman "Code") | [<img src="https://avatars.githubusercontent.com/u/86454?v=3" width="100px;"/><br /><sub>Elijah Manor</sub>](http://elijahmanor.com)<br />[📹](#video-elijahmanor "Videos") | [<img src="https://avatars.githubusercontent.com/u/10691183?v=3" width="100px;"/><br /><sub>Ragu Ramaswamy</sub>](https://github.com/rrag)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=rrag "Code") [⚠️](https://github.com/kentcdodds/p-s/commits?author=rrag "Tests") [🐛](https://github.com/kentcdodds/p-s/issues?q=author%3Arrag "Bug reports") |
-| [<img src="https://avatars.githubusercontent.com/u/2915616?v=3" width="100px;"/><br /><sub>Erik Fox</sub>](http://www.erikfox.co/)<br />[🐛](https://github.com/kentcdodds/p-s/issues?q=author%3Aerikfox "Bug reports") [💻](https://github.com/kentcdodds/p-s/commits?author=erikfox "Code") [📖](https://github.com/kentcdodds/p-s/commits?author=erikfox "Documentation") [⚠️](https://github.com/kentcdodds/p-s/commits?author=erikfox "Tests") | [<img src="https://avatars.githubusercontent.com/u/5351262?v=3" width="100px;"/><br /><sub>Aditya Pratap Singh</sub>](http://blog.adityapsingh.com)<br />[👀](#review-addityasingh "Reviewed Pull Requests") | [<img src="https://avatars.githubusercontent.com/u/7687132?v=3" width="100px;"/><br /><sub>bumbleblym</sub>](https://github.com/bumbleblym)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=bumbleblym "Code") [📖](https://github.com/kentcdodds/p-s/commits?author=bumbleblym "Documentation") | [<img src="https://avatars.githubusercontent.com/u/7091543?v=3" width="100px;"/><br /><sub>Islam Attrash</sub>](https://twitter.com/IslamAttrash)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=Attrash-Islam "Code") | [<img src="https://avatars.githubusercontent.com/u/7215306?v=3" width="100px;"/><br /><sub>JasonSooter</sub>](https://github.com/JasonSooter)<br />[📖](https://github.com/kentcdodds/p-s/commits?author=JasonSooter "Documentation") | [<img src="https://avatars1.githubusercontent.com/u/116871?v=3" width="100px;"/><br /><sub>Nate Cavanaugh</sub>](http://alterform.com)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=natecavanaugh "Code") | [<img src="https://avatars2.githubusercontent.com/u/3534924?v=3" width="100px;"/><br /><sub>Wissam Abirached</sub>](https://designingforscale.com)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=wabirached "Code") [⚠️](https://github.com/kentcdodds/p-s/commits?author=wabirached "Tests") |
-| [<img src="https://avatars1.githubusercontent.com/u/12592677?v=3" width="100px;"/><br /><sub>Paweł Mikołajczyk</sub>](https://github.com/Miklet)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=Miklet "Code") [⚠️](https://github.com/kentcdodds/p-s/commits?author=Miklet "Tests") | [<img src="https://avatars0.githubusercontent.com/u/1295580?v=3" width="100px;"/><br /><sub>Kyle Welch</sub>](http://www.krwelch.com)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=kwelch "Code") [⚠️](https://github.com/kentcdodds/p-s/commits?author=kwelch "Tests") | [<img src="https://avatars3.githubusercontent.com/u/22868432?v=3" width="100px;"/><br /><sub>Lufty Wiranda</sub>](http://instagram.com/luftywiranda13)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=luftywiranda13 "Code") | [<img src="https://avatars6.githubusercontent.com/u/2936644?v=4" width="100px;"/><br /><sub>Bhargav Ponnapalli</sub>](http://imbhargav5.com)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=imbhargav5 "Code") | [<img src="https://avatars0.githubusercontent.com/u/1538572?v=4" width="100px;"/><br /><sub>falieson</sub>](https://github.com/Falieson)<br />[📖](https://github.com/kentcdodds/p-s/commits?author=Falieson "Documentation") [🔧](#tool-Falieson "Tools") | [<img src="https://avatars2.githubusercontent.com/u/22251956?v=4" width="100px;"/><br /><sub>Suhas Karanth</sub>](https://github.com/sudo-suhas)<br />[🐛](https://github.com/kentcdodds/p-s/issues?q=author%3Asudo-suhas "Bug reports") [💻](https://github.com/kentcdodds/p-s/commits?author=sudo-suhas "Code") | [<img src="https://avatars3.githubusercontent.com/u/1228867?v=4" width="100px;"/><br /><sub>Eric Skram</sub>](http://www.ericskram.com)<br />[📖](https://github.com/kentcdodds/p-s/commits?author=Vpr99 "Documentation") |
-| [<img src="https://avatars2.githubusercontent.com/u/11901111?v=4" width="100px;"/><br /><sub>Kether Saturnius</sub>](http://www.k3th3r.com)<br />[💻](https://github.com/kentcdodds/p-s/commits?author=iamkether "Code") [📖](https://github.com/kentcdodds/p-s/commits?author=iamkether "Documentation") |
+| [<img src="https://avatars.githubusercontent.com/u/1972567?v=3" width="100px;"/><br /><sub><b>Tommy</b></sub>](http://www.tommyleunen.com)<br />[🐛](/kentcdodds/p-s/issues?q=author%3Atleunen "Bug reports") [💻](/kentcdodds/p-s/commits?author=tleunen "Code") [⚠️](/kentcdodds/p-s/commits?author=tleunen "Tests") [👀](#review-tleunen "Reviewed Pull Requests") | [<img src="https://avatars.githubusercontent.com/u/509946?v=3" width="100px;"/><br /><sub><b>Jayson Harshbarger</b></sub>](http://www.hypercubed.com)<br />[💡](#example-Hypercubed "Examples") [👀](#review-Hypercubed "Reviewed Pull Requests") | [<img src="https://avatars.githubusercontent.com/u/1355481?v=3" width="100px;"/><br /><sub><b>JD Isaacks</b></sub>](http://www.jisaacks.com)<br />[💻](/kentcdodds/p-s/commits?author=jisaacks "Code") [⚠️](/kentcdodds/p-s/commits?author=jisaacks "Tests") | [<img src="https://avatars.githubusercontent.com/u/924465?v=3" width="100px;"/><br /><sub><b>Christopher Hiller</b></sub>](https://boneskull.com)<br />[👀](#review-boneskull "Reviewed Pull Requests") [🐛](/kentcdodds/p-s/issues?q=author%3Aboneskull "Bug reports") [💻](/kentcdodds/p-s/commits?author=boneskull "Code") [📖](/kentcdodds/p-s/commits?author=boneskull "Documentation") [⚠️](/kentcdodds/p-s/commits?author=boneskull "Tests") | [<img src="https://avatars.githubusercontent.com/u/1834413?v=3" width="100px;"/><br /><sub><b>Robin Malfait</b></sub>](https://robinmalfait.com)<br />[💡](#example-RobinMalfait "Examples") | [<img src="https://avatars.githubusercontent.com/u/622118?v=3" width="100px;"/><br /><sub><b>Eric McCormick</b></sub>](https://ericmccormick.io)<br />[👀](#review-edm00se "Reviewed Pull Requests") [📖](/kentcdodds/p-s/commits?author=edm00se "Documentation") | [<img src="https://avatars.githubusercontent.com/u/1913805?v=3" width="100px;"/><br /><sub><b>Sam Verschueren</b></sub>](https://twitter.com/SamVerschueren)<br />[👀](#review-SamVerschueren "Reviewed Pull Requests") |
+| [<img src="https://avatars.githubusercontent.com/u/1155589?v=3" width="100px;"/><br /><sub><b>Sorin Muntean</b></sub>](https://github.com/sxn)<br />[💻](/kentcdodds/p-s/commits?author=sxn "Code") [⚠️](/kentcdodds/p-s/commits?author=sxn "Tests") [📖](/kentcdodds/p-s/commits?author=sxn "Documentation") | [<img src="https://avatars.githubusercontent.com/u/1970063?v=3" width="100px;"/><br /><sub><b>Keith Gunn</b></sub>](https://github.com/gunnx)<br />[🐛](/kentcdodds/p-s/issues?q=author%3Agunnx "Bug reports") [💻](/kentcdodds/p-s/commits?author=gunnx "Code") [⚠️](/kentcdodds/p-s/commits?author=gunnx "Tests") | [<img src="https://avatars.githubusercontent.com/u/1019478?v=3" width="100px;"/><br /><sub><b>Joe Martella</b></sub>](http://martellaj.github.io)<br />[🐛](/kentcdodds/p-s/issues?q=author%3Amartellaj "Bug reports") [💻](/kentcdodds/p-s/commits?author=martellaj "Code") [⚠️](/kentcdodds/p-s/commits?author=martellaj "Tests") | [<img src="https://avatars.githubusercontent.com/u/1887854?v=3" width="100px;"/><br /><sub><b>Martin Segado</b></sub>](https://github.com/msegado)<br />[📖](/kentcdodds/p-s/commits?author=msegado "Documentation") | [<img src="https://avatars.githubusercontent.com/u/36491?v=3" width="100px;"/><br /><sub><b>Bram Borggreve</b></sub>](http://colmena.io/)<br />[🐛](/kentcdodds/p-s/issues?q=author%3Abeeman "Bug reports") [💻](/kentcdodds/p-s/commits?author=beeman "Code") | [<img src="https://avatars.githubusercontent.com/u/86454?v=3" width="100px;"/><br /><sub><b>Elijah Manor</b></sub>](http://elijahmanor.com)<br />[📹](#video-elijahmanor "Videos") | [<img src="https://avatars.githubusercontent.com/u/10691183?v=3" width="100px;"/><br /><sub><b>Ragu Ramaswamy</b></sub>](https://github.com/rrag)<br />[💻](/kentcdodds/p-s/commits?author=rrag "Code") [⚠️](/kentcdodds/p-s/commits?author=rrag "Tests") [🐛](/kentcdodds/p-s/issues?q=author%3Arrag "Bug reports") |
+| [<img src="https://avatars.githubusercontent.com/u/2915616?v=3" width="100px;"/><br /><sub><b>Erik Fox</b></sub>](http://www.erikfox.co/)<br />[🐛](/kentcdodds/p-s/issues?q=author%3Aerikfox "Bug reports") [💻](/kentcdodds/p-s/commits?author=erikfox "Code") [📖](/kentcdodds/p-s/commits?author=erikfox "Documentation") [⚠️](/kentcdodds/p-s/commits?author=erikfox "Tests") | [<img src="https://avatars.githubusercontent.com/u/5351262?v=3" width="100px;"/><br /><sub><b>Aditya Pratap Singh</b></sub>](http://blog.adityapsingh.com)<br />[👀](#review-addityasingh "Reviewed Pull Requests") | [<img src="https://avatars.githubusercontent.com/u/7687132?v=3" width="100px;"/><br /><sub><b>bumbleblym</b></sub>](https://github.com/bumbleblym)<br />[💻](/kentcdodds/p-s/commits?author=bumbleblym "Code") [📖](/kentcdodds/p-s/commits?author=bumbleblym "Documentation") | [<img src="https://avatars.githubusercontent.com/u/7091543?v=3" width="100px;"/><br /><sub><b>Islam Attrash</b></sub>](https://twitter.com/IslamAttrash)<br />[💻](/kentcdodds/p-s/commits?author=Attrash-Islam "Code") | [<img src="https://avatars.githubusercontent.com/u/7215306?v=3" width="100px;"/><br /><sub><b>JasonSooter</b></sub>](https://github.com/JasonSooter)<br />[📖](/kentcdodds/p-s/commits?author=JasonSooter "Documentation") | [<img src="https://avatars1.githubusercontent.com/u/116871?v=3" width="100px;"/><br /><sub><b>Nate Cavanaugh</b></sub>](http://alterform.com)<br />[💻](/kentcdodds/p-s/commits?author=natecavanaugh "Code") | [<img src="https://avatars2.githubusercontent.com/u/3534924?v=3" width="100px;"/><br /><sub><b>Wissam Abirached</b></sub>](https://designingforscale.com)<br />[💻](/kentcdodds/p-s/commits?author=wabirached "Code") [⚠️](/kentcdodds/p-s/commits?author=wabirached "Tests") |
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 <!-- ALL-CONTRIBUTORS-LIST:END -->
 
 This project follows the [all-contributors][all-contributors] specification.
diff --git a/src/__tests__/kebab-and-camel-casify.js b/src/__tests__/kebab-and-camel-casify.js
index 9c2734c..462ed2a 100644
--- a/src/__tests__/kebab-and-camel-casify.js
+++ b/src/__tests__/kebab-and-camel-casify.js
@@ -39,6 +39,27 @@ testScenario(
   'deep objects',
 )
 
+testScenario(
+  {
+    default: 'nps _default foo',
+    _default: 'echo "default"',
+    foo: 'echo "foo"',
+    _a: 'echo "a"',
+    _: 'echo "this script name will be an empty string after conversion"',
+    '-': 'echo "this script name will be an empty string after conversion"',
+  },
+  {
+    default: 'nps _default foo',
+    _default: 'echo "default"',
+    foo: 'echo "foo"',
+    _a: 'echo "a"',
+    a: 'echo "a"',
+    _: 'echo "this script name will be an empty string after conversion"',
+    '-': 'echo "this script name will be an empty string after conversion"',
+  },
+  "won't overwrite existing scripts",
+)
+
 function testUnchanged(input, message = 'no change needed') {
   testScenario(input, input, message)
 }
diff --git a/src/kebab-and-camel-casify.js b/src/kebab-and-camel-casify.js
index 1459ae1..a8c131d 100644
--- a/src/kebab-and-camel-casify.js
+++ b/src/kebab-and-camel-casify.js
@@ -7,15 +7,20 @@ function kebabAndCamelCasify(obj) {
     const camel = camelCase(key)
     const kebab = kebabCase(key)
     let val = obj[key]
+
     if (isPlainObject(obj[key])) {
       val = kebabAndCamelCasify(val)
     }
-    if (key !== camel || key !== kebab) {
-      result[camel] = val
-      result[kebab] = val
-    } else {
-      result[key] = val
-    }
+
+    setIfPossible(result, camel, val)
+    setIfPossible(result, kebab, val)
+
     return result
   }, obj)
 }
+
+function setIfPossible(obj, key, val) {
+  if (String(key).length && !(key in obj)) {
+    obj[key] = val
+  }
+}