fix: transpile imported modules (#51)

* add contributor

* (fix) perform transpilation for modules required in preval's template tags

.all-contributorsrc

@@ -112,6 +112,16 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "marzelin",
+      "name": "Marcin Zielinski",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/13483453?v=4",
+      "profile": "https://github.com/marzelin",
+      "contributions": [
+        "code"
+      ]
     }
-  ]
+  ],
+  "repoType": "github"
 }

README.md

@@ -13,7 +13,7 @@ Pre-evaluate code at build-time
 [![downloads][downloads-badge]][npm-stat]
 [![MIT License][license-badge]][license]
 
-[![All Contributors](https://img.shields.io/badge/all_contributors-11-orange.svg?style=flat-square)](#contributors)
+[![All Contributors](https://img.shields.io/badge/all_contributors-12-orange.svg?style=flat-square)](#contributors)
 [![PRs Welcome][prs-badge]][prs]
 [![Donate][donate-badge]][donate]
 [![Code of Conduct][coc-badge]][coc]
@@ -116,13 +116,13 @@ npm install --save-dev babel-plugin-preval
 
 Important notes:
 
-1. All code run by `preval` is _not_ run in a sandboxed environment
-2. All code _must_ run synchronously.
-3. All code will be transpiled via `babel-core` directly or `babel-register`
-   and should follow all of the normal rules for `.babelrc` resolution (the
-   closest `.babelrc` to the file being run is the one that's used). This means
-   you can rely on any babel plugins/transforms that you're used to using
-   elsewhere in your codebase.
+1.  All code run by `preval` is _not_ run in a sandboxed environment
+2.  All code _must_ run synchronously.
+3.  All code will be transpiled via `babel-core` directly or `babel-register`
+    and should follow all of the normal rules for `.babelrc` resolution (the
+    closest `.babelrc` to the file being run is the one that's used). This means
+    you can rely on any babel plugins/transforms that you're used to using
+    elsewhere in your codebase.
 
 ### Template Tag
 
@@ -369,9 +369,9 @@ Thanks goes to these people ([emoji key][emojis]):
 <!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
 
 <!-- prettier-ignore -->
-| [<img src="https://avatars.githubusercontent.com/u/1500684?v=3" width="100px;"/><br /><sub><b>Kent C. Dodds</b></sub>](https://kentcdodds.com)<br />[💻](https://github.com/kentcdodds/babel-plugin-preval/commits?author=kentcdodds "Code") [📖](https://github.com/kentcdodds/babel-plugin-preval/commits?author=kentcdodds "Documentation") [🚇](#infra-kentcdodds "Infrastructure (Hosting, Build-Tools, etc)") [⚠️](https://github.com/kentcdodds/babel-plugin-preval/commits?author=kentcdodds "Tests") | [<img src="https://avatars3.githubusercontent.com/u/5610087?v=3" width="100px;"/><br /><sub><b>Matt Phillips</b></sub>](http://mattphillips.io)<br />[💻](https://github.com/kentcdodds/babel-plugin-preval/commits?author=mattphillips "Code") [📖](https://github.com/kentcdodds/babel-plugin-preval/commits?author=mattphillips "Documentation") [⚠️](https://github.com/kentcdodds/babel-plugin-preval/commits?author=mattphillips "Tests") | [<img src="https://avatars1.githubusercontent.com/u/28024000?v=3" width="100px;"/><br /><sub><b>Philip Oliver</b></sub>](https://twitter.com/philipodev)<br />[🐛](https://github.com/kentcdodds/babel-plugin-preval/issues?q=author%3Aphilipodev "Bug reports") | [<img src="https://avatars2.githubusercontent.com/u/2109702?v=3" width="100px;"/><br /><sub><b>Sorin Davidoi</b></sub>](https://toot.cafe/@sorin)<br />[🐛](https://github.com/kentcdodds/babel-plugin-preval/issues?q=author%3Asorin-davidoi "Bug reports") [💻](https://github.com/kentcdodds/babel-plugin-preval/commits?author=sorin-davidoi "Code") [⚠️](https://github.com/kentcdodds/babel-plugin-preval/commits?author=sorin-davidoi "Tests") | [<img src="https://avatars4.githubusercontent.com/u/1127238?v=4" width="100px;"/><br /><sub><b>Luke Herrington</b></sub>](https://github.com/infiniteluke)<br />[💡](#example-infiniteluke "Examples") | [<img src="https://avatars4.githubusercontent.com/u/22868432?v=4" width="100px;"/><br /><sub><b>Lufty Wiranda</b></sub>](http://instagram.com/luftywiranda13)<br />[💻](https://github.com/kentcdodds/babel-plugin-preval/commits?author=luftywiranda13 "Code") | [<img src="https://avatars0.githubusercontent.com/u/3877773?v=4" width="100px;"/><br /><sub><b>Oscar</b></sub>](http://obartra.github.io)<br />[💻](https://github.com/kentcdodds/babel-plugin-preval/commits?author=obartra "Code") [⚠️](https://github.com/kentcdodds/babel-plugin-preval/commits?author=obartra "Tests") |
+| [<img src="https://avatars.githubusercontent.com/u/1500684?v=3" width="100px;"/><br /><sub><b>Kent C. Dodds</b></sub>](https://kentcdodds.com)<br />[💻](/kentcdodds/babel-plugin-preval/commits?author=kentcdodds "Code") [📖](/kentcdodds/babel-plugin-preval/commits?author=kentcdodds "Documentation") [🚇](#infra-kentcdodds "Infrastructure (Hosting, Build-Tools, etc)") [⚠️](/kentcdodds/babel-plugin-preval/commits?author=kentcdodds "Tests") | [<img src="https://avatars3.githubusercontent.com/u/5610087?v=3" width="100px;"/><br /><sub><b>Matt Phillips</b></sub>](http://mattphillips.io)<br />[💻](/kentcdodds/babel-plugin-preval/commits?author=mattphillips "Code") [📖](/kentcdodds/babel-plugin-preval/commits?author=mattphillips "Documentation") [⚠️](/kentcdodds/babel-plugin-preval/commits?author=mattphillips "Tests") | [<img src="https://avatars1.githubusercontent.com/u/28024000?v=3" width="100px;"/><br /><sub><b>Philip Oliver</b></sub>](https://twitter.com/philipodev)<br />[🐛](/kentcdodds/babel-plugin-preval/issues?q=author%3Aphilipodev "Bug reports") | [<img src="https://avatars2.githubusercontent.com/u/2109702?v=3" width="100px;"/><br /><sub><b>Sorin Davidoi</b></sub>](https://toot.cafe/@sorin)<br />[🐛](/kentcdodds/babel-plugin-preval/issues?q=author%3Asorin-davidoi "Bug reports") [💻](/kentcdodds/babel-plugin-preval/commits?author=sorin-davidoi "Code") [⚠️](/kentcdodds/babel-plugin-preval/commits?author=sorin-davidoi "Tests") | [<img src="https://avatars4.githubusercontent.com/u/1127238?v=4" width="100px;"/><br /><sub><b>Luke Herrington</b></sub>](https://github.com/infiniteluke)<br />[💡](#example-infiniteluke "Examples") | [<img src="https://avatars4.githubusercontent.com/u/22868432?v=4" width="100px;"/><br /><sub><b>Lufty Wiranda</b></sub>](http://instagram.com/luftywiranda13)<br />[💻](/kentcdodds/babel-plugin-preval/commits?author=luftywiranda13 "Code") | [<img src="https://avatars0.githubusercontent.com/u/3877773?v=4" width="100px;"/><br /><sub><b>Oscar</b></sub>](http://obartra.github.io)<br />[💻](/kentcdodds/babel-plugin-preval/commits?author=obartra "Code") [⚠️](/kentcdodds/babel-plugin-preval/commits?author=obartra "Tests") |
 | :---: | :---: | :---: | :---: | :---: | :---: | :---: |
-| [<img src="https://avatars1.githubusercontent.com/u/14310216?v=4" width="100px;"/><br /><sub><b>pro-nasa</b></sub>](https://github.com/pro-nasa)<br />[📖](https://github.com/kentcdodds/babel-plugin-preval/commits?author=pro-nasa "Documentation") | [<img src="https://avatars0.githubusercontent.com/u/9248479?v=4" width="100px;"/><br /><sub><b>Sergey Bekrin</b></sub>](http://bekrin.me)<br /> | [<img src="https://avatars0.githubusercontent.com/u/18613301?v=4" width="100px;"/><br /><sub><b>Mauro Bringolf</b></sub>](https://maurobringolf.ch)<br />[💻](https://github.com/kentcdodds/babel-plugin-preval/commits?author=maurobringolf "Code") [⚠️](https://github.com/kentcdodds/babel-plugin-preval/commits?author=maurobringolf "Tests") | [<img src="https://avatars1.githubusercontent.com/u/10875678?v=4" width="100px;"/><br /><sub><b>Joe Lim</b></sub>](https://joelim.me)<br />[💻](https://github.com/kentcdodds/babel-plugin-preval/commits?author=xjlim "Code") |
+| [<img src="https://avatars1.githubusercontent.com/u/14310216?v=4" width="100px;"/><br /><sub><b>pro-nasa</b></sub>](https://github.com/pro-nasa)<br />[📖](/kentcdodds/babel-plugin-preval/commits?author=pro-nasa "Documentation") | [<img src="https://avatars0.githubusercontent.com/u/9248479?v=4" width="100px;"/><br /><sub><b>Sergey Bekrin</b></sub>](http://bekrin.me)<br /> | [<img src="https://avatars0.githubusercontent.com/u/18613301?v=4" width="100px;"/><br /><sub><b>Mauro Bringolf</b></sub>](https://maurobringolf.ch)<br />[💻](/kentcdodds/babel-plugin-preval/commits?author=maurobringolf "Code") [⚠️](/kentcdodds/babel-plugin-preval/commits?author=maurobringolf "Tests") | [<img src="https://avatars1.githubusercontent.com/u/10875678?v=4" width="100px;"/><br /><sub><b>Joe Lim</b></sub>](https://joelim.me)<br />[💻](/kentcdodds/babel-plugin-preval/commits?author=xjlim "Code") | [<img src="https://avatars3.githubusercontent.com/u/13483453?v=4" width="100px;"/><br /><sub><b>Marcin Zielinski</b></sub>](https://github.com/marzelin)<br />[💻](/kentcdodds/babel-plugin-preval/commits?author=marzelin "Code") |
 
 <!-- ALL-CONTRIBUTORS-LIST:END -->
 

src/__tests__/__snapshots__/index.js.snap

@@ -392,3 +392,13 @@ module.exports = smth.UNDEFINED;
 module.exports = undefined;
 
 `;
+
+exports[`38. preval 1`] = `
+
+const x = preval\`module.exports = require('./fixtures/es6.js')\`
+
+      ↓ ↓ ↓ ↓ ↓ ↓
+
+const x = { "default": "this string used exported default" };
+
+`;

src/__tests__/index.js

@@ -135,5 +135,6 @@ pluginTester({
       // @preval
       /* comment */
     `),
+    `const x = preval\`module.exports = require('./fixtures/es6.js')\``,
   ],
 })

src/get-replacement.js

@@ -4,9 +4,10 @@ const objectToAST = require('./object-to-ast')
 module.exports = getReplacement
 
 function getReplacement({string: stringToPreval, filename, babel}) {
-  const {code: transpiled} = babel.transform(stringToPreval, {
+  const {code} = babel.transform(stringToPreval, {
     filename,
   })
+  const transpiled = `require('babel-register');\n${code}`
   const val = requireFromString(transpiled, filename)
   return objectToAST(val)
 }