Chore: Adding rsync to yarn run watch

.gitignore

@@ -15,4 +15,5 @@ src/i18n/json
 test/dev.html
 lib
 *~~bak
-functional-tests/output
+functional-tests/output
+build/rsync.json

README.md

@@ -83,6 +83,12 @@ Supported image file extensions: `ai, bmp, dcm, eps, gif, png, ps, psd, svs, tga
 9.  Test your first build! `yarn run build`
 10. To test only local annotation changes, see [instantiating a custom instance of Box Annotations](https://github.com/box/box-annotations/#passing-an-instance-of-box-annotations-into-box-content-preview).
 11. To link and test your local code changes along with your local Preview changes, run `yarn link` in this repository and `yarn link box-annotations` wherever [Box Content Preview](github.com/box/box-content-preview/) is cloned locally.
+12. To automatically rsync files after a Webpack build, add a build/rsync.json file with a `location` field. This file should look like:
+```
+{
+    "location": "YOUR_DESIRED_RSYNC_LOCATION_HERE"
+}
+```
 
 For more information on contributing see [Contributing](docs/contributing.md).
 

build/RsyncPlugin.js

@@ -0,0 +1,17 @@
+const execSync = require('child_process').execSync;
+
+function RsyncPlugin(source, destination) {
+    this.source = source;
+    this.destination = destination;
+}
+
+/* eslint-disable no-console */
+RsyncPlugin.prototype.apply = function rsync(compiler) {
+    compiler.plugin('done', () => {
+        console.log('');
+        console.log(`🔄 🔄 🔄  Rsync starting for ${this.source} 🔄 🔄 🔄`);
+        execSync(`rsync -avzq --exclude=".*" "${this.source}" "${this.destination}"`, { stdio: [0, 1, 2] });
+    });
+};
+
+module.exports = RsyncPlugin;

build/webpack.config.js

@@ -5,11 +5,21 @@ const isDev = process.env.NODE_ENV === 'dev';
 
 const path = require('path');
 const OptimizeCssAssetsPlugin = require('optimize-css-assets-webpack-plugin');
+const RsyncPlugin = require('./RsyncPlugin');
 const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
 const { BannerPlugin } = require('webpack');
 const { BundleAnalyzerPlugin } = require('webpack-bundle-analyzer');
 const commonConfig = require('./webpack.common.config');
 const license = require('./license');
+const fs = require('fs');
+
+let rsyncLocation = '';
+if (fs.existsSync('build/rsync.json')) {
+    /* eslint-disable */
+    const rsyncConf = require('./rsync.json');
+    rsyncLocation = rsyncConf.location;
+    /* eslint-enable */
+}
 
 /* eslint-disable key-spacing, require-jsdoc */
 const config = Object.assign(commonConfig(), {
@@ -23,6 +33,11 @@ const config = Object.assign(commonConfig(), {
 });
 
 if (isDev) {
+    // If build/rsync.json exists, rsync bundled files to specified directory
+    if (rsyncLocation) {
+        config.plugins.push(new RsyncPlugin('lib/.', rsyncLocation));
+    }
+
     // Add inline source map
     config.devtool = 'inline-source-map';
 }