Merge pull request mozilla#26 from dmose/buildit

Fixes mozilla#21, add build step for mozilla-central

README.md

@@ -341,6 +341,14 @@ it with Pip, and then run `therapist install` in this repo to set it
 up. It will automatically format your Javascript with Prettier, and
 run ESLint checks before committing your code.
 
+## Building a JSM for use in mozilla-central ##
+```shell
+$ yarn build
+```
+
+The result will be in `vendor/mozjexl.jsm`.  This is for use in `mozilla-central/toolkit`, so it is not
+minified as it will be compressed in the omnijar file.
+
 ## License
 Mozjexl is licensed under the MIT license. Please see `LICENSE.txt` for full
 details.

package.json

@@ -7,6 +7,8 @@
     "test": "test"
   },
   "scripts": {
+    "watch": "webpack --config ./webpack.config.js --watch",
+    "build": "webpack --config ./webpack.config.js",
     "test": "mocha -R spec --recursive test",
     "lint": "eslint lib test .eslintrc.js --ignore-pattern '!.eslintrc.js'"
   },
@@ -41,6 +43,8 @@
     "eslint": "^4.18.1",
     "eslint-config-prettier": "^2.9.0",
     "eslint-plugin-prettier": "^2.6.0",
-    "prettier": "^1.10.2"
+    "license-webpack-plugin": "0.5.1",
+    "prettier": "^1.10.2",
+    "webpack": "3.1.0"
   }
 }