chore(package): expose src/index as browser entry point

Downstream webpack will need any dependencies src/ depends on so it can
successfully build. Also if multiple packages being built into a larger
script share a common dependency version range, they can share the
dependency instead of duplicating it. This will save built file size,
execution time, and memory.

package.json

@@ -9,7 +9,7 @@
     "url": "https://github.com/LLK/scratch-storage.git"
   },
   "main": "./dist/node/scratch-storage.js",
-  "browser": "./dist/web/scratch-storage.js",
+  "browser": "./src/index.js",
   "scripts": {
     "build": "webpack --progress --colors --bail",
     "coverage": "tap ./test/{unit,integration}/*.js --coverage --coverage-report=lcov",
@@ -23,31 +23,32 @@
     "watch": "webpack --progress --colors --watch",
     "semantic-release": "semantic-release pre && npm publish && semantic-release post"
   },
+  "dependencies": {
+    "arraybuffer-loader": "^1.0.3",
+    "base64-js": "1.2.1",
+    "js-md5": "0.6.1",
+    "localforage": "1.5.0",
+    "nets": "3.2.0",
+    "text-encoding": "0.6.4"
+  },
   "devDependencies": {
     "@commitlint/cli": "6.1.0",
     "@commitlint/config-conventional": "6.1.0",
     "@commitlint/travis-cli": "6.1.0",
-    "arraybuffer-loader": "^1.0.3",
     "babel-core": "6.22.1",
     "babel-eslint": "7.1.1",
     "babel-loader": "^7.1.4",
     "babel-polyfill": "6.22.0",
     "babel-preset-env": "^1.6.1",
-    "base64-js": "1.2.1",
     "cz-conventional-changelog": "^2.0.0",
-    "debug": "2.6.0",
     "eslint": "3.14.1",
     "eslint-config-scratch": "3.1.0",
     "eslint-plugin-react": "6.9.0",
     "file-loader": "1.1.11",
     "husky": "0.14.3",
-    "js-md5": "0.6.1",
     "json": "^9.0.4",
-    "localforage": "1.5.0",
-    "nets": "3.2.0",
     "semantic-release": "^6.3.2",
     "tap": "8.0.1",
-    "text-encoding": "0.6.4",
     "travis-after-all": "^1.4.4",
     "uglifyjs-webpack-plugin": "^1.2.5",
     "webpack": "^4.8.0",

webpack.config.js

@@ -56,6 +56,13 @@ module.exports = [
             libraryTarget: 'commonjs2',
             path: path.resolve('dist', 'node'),
             filename: '[name].js'
+        },
+        externals: {
+            'base64-js': true,
+            'js-md5': true,
+            'localforage': true,
+            'nets': true,
+            'text-encoding': true
         }
     })
 ];