fix(all): Re-organize import from d3

- Updated module importing to be from specific module
- Removed exporting d3
- Added webpack-monitor

Fix #285
Close #313

.travis.yml

@@ -14,7 +14,7 @@ addons:
 cache:
   yarn: true
   directories:
-    - "node_modules"
+    - $HOME/.npm
 before_script:
   - greenkeeper-lockfile-update
   - npm run lint

README.md

@@ -117,7 +117,11 @@ Load billboard.js after D3.js.
 or use importing ESM.
 
 ```js
+// as named import
 import {bb} from "billboard.js";
+
+// or as importing default
+import bb from "billboard.js";
 ```
 
 > **Note**  

config/uglify.js

@@ -8,7 +8,9 @@ module.exports = {
 			comments: false
 		},
 		keep_fnames: true,
-		warnings: false
+		warnings: false,
+		dead_code: true,
+		unused: true
 	},
 	sourceMap: true
 };

config/webpack.config.packaged.js

@@ -11,14 +11,15 @@ const config = {
 	},
 	devtool: false,
 	module: {
-		rules: [{
-			test: /\.scss$/,
-			use: [{
-				loader: "css-loader"
-			}, {
-				loader: "sass-loader"
-			}]
-		}],
+		rules: [
+			{
+				test: /\.scss$/,
+				use: [
+					{loader: "css-loader"},
+					{loader: "sass-loader"}
+				],
+			}
+		],
 	},
 	plugins: [
 		new UglifyJSPlugin(uglifyConfig),

config/webpack.config.production.js

@@ -7,14 +7,20 @@ const uglifyConfig = require("./uglify");
 const banner = require("./banner");
 const OptimizeCssAssetsPlugin = require("optimize-css-assets-webpack-plugin");
 const ExtractTextPlugin = require("extract-text-webpack-plugin");
+
 const config = {
 	entry: {
 		"billboard": "./src/core.js",
 		"billboard.min": "./src/core.js",
 	},
-	externals: [{
-		"d3": "d3"
-	}],
+	externals: function(context, request, callback) {
+		// every 'd3-*' import, will be externally required as 'd3'
+		if(/^d3-/.test(request)) {
+			return callback(null, "d3");
+		}
+
+		callback();
+	},
 	module: {
 		rules: [
 			{

karma.conf.js

@@ -28,8 +28,8 @@ module.exports = function(config) {
 								[
 									"env",
 									{
-										"loose": true,
-										"modules": false
+										loose: true,
+										modules: false
 									}
 								]
 							],