Decaffeinate, convert to (relatively) modern JS

.babelrc

@@ -0,0 +1,3 @@
+{
+  "presets": [["@babel/preset-env", { "targets": { "node": "current" } }]]
+}

.gitignore

@@ -1,4 +1,5 @@
 *.swp
+lib
 node_modules
 npm-debug.log
 .nyc_output

CONTRIBUTING.md

@@ -4,10 +4,6 @@ We're always happy about useful new pull requests. Keep in mind that the better
 your pull request is, the easier it can be added to `xml2js`. As such please
 make sure your patch is ok:
 
- * `xml2js` is written in CoffeeScript. Please don't send patches to
-   the JavaScript source, as it get's overwritten by the CoffeeScript
-   compiler. The reason we have the JS code in the repository is for easier
-   use with eg. `git submodule`
  * Make sure that the unit tests still all pass. Failing unit tests mean that
    someone *will* run into a bug, if we accept your pull request.
  * Please, add a unit test with your pull request, to show what was broken and

README.md

@@ -487,9 +487,7 @@ We also have a number of unit tests, they can be run using `npm test` directly
 from the project root. This runs zap to discover all the tests and execute
 them.
 
-If you like to contribute, keep in mind that `xml2js` is written in
-CoffeeScript, so don't develop on the JavaScript files that are checked into
-the repository for convenience reasons. Also, please write some unit test to
+If you like to contribute, please write some unit test to
 check your behaviour and if it is some user-facing thing, add some
 documentation to this README, so people will know it exists. Thanks in advance!
 

bower.json

@@ -1,5 +1,4 @@
-{
-  "name": "xml2js",
+": "xml2js",
   "description": "Simple XML to JavaScript object converter.",
   "keywords": [
     "xml",
@@ -61,11 +60,15 @@
     "xmlbuilder": "oozcitak/xmlbuilder-js"
   },
   "devDependencies": {
+    "@babel/cli": "^7.14.5",
+    "@babel/core": "^7.14.6",
+    "@babel/preset-env": "^7.4.2",
     "coffee-script": ">=1.10.0",
     "coveralls": "nickmerwin/node-coveralls",
     "diff": "kpdecker/jsdiff",
     "docco": "jashkenas/docco",
     "nyc": "bcoe/nyc",
+    "standardx": "^7.0.0",
     "zap": "nornagon/node-zap"
   },
   "ignore": [