feat(source-maps): Generate source-maps for browser build (#2010)

Improve debugging for users loading in library via unpkg or jsdelivr

packages/xrpl/package.json

@@ -6,7 +6,9 @@
   "files": [
     "dist/npm/*",
     "build/xrpl-latest-min.js",
-    "build/xrpl-latest.js"
+    "build/xrpl-latest-min.js.map",
+    "build/xrpl-latest.js",
+    "build/xrpl-latest.js.map"
   ],
   "main": "dist/npm/",
   "unpkg": "build/xrpl-latest-min.js",

packages/xrpl/webpack.config.js

@@ -23,6 +23,7 @@ function getDefaultConfiguration() {
       path: path.join(__dirname, 'build/'),
       filename: `xrpl.default.js`,
     },
+    devtool: 'source-map',
     plugins: [
       new webpack.NormalModuleReplacementPlugin(/^ws$/, './WSWrapper'),
       new webpack.ProvidePlugin({ process: 'process/browser' }),
@@ -45,7 +46,12 @@ function getDefaultConfiguration() {
       }),
     ],
     module: {
-      rules: [],
+      rules: [
+        {
+          test: /\.js$/,
+          use: ['source-map-loader'],
+        },
+      ],
     },
     resolve: {
       alias: {