Add webpack to check build size (currently 3.36kb)

.gitignore

@@ -1,2 +1,3 @@
 coverage
 node_modules
+dist

package-lock.json

@@ -3610,6 +3610,12 @@
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@@ -4995,6 +5057,15 @@
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@@ -6856,6 +6988,12 @@
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       }
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+    "parse-passwd": {
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+      "resolved": "https://registry.npmjs.org/parse-passwd/-/parse-passwd-1.0.0.tgz",
+      "integrity": "sha1-bVuTSkVpk7I9N/QKOC1vFmao5cY=",
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+      "resolved": "https://registry.npmjs.org/resolve-cwd/-/resolve-cwd-2.0.0.tgz",
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+    },
     "validate-npm-package-license": {
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@@ -9254,6 +9430,152 @@
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+    "webpack-cli": {
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+      "resolved": "https://registry.npmjs.org/webpack-cli/-/webpack-cli-3.3.12.tgz",
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+        "supports-color": "^6.1.0",
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package.json

@@ -7,6 +7,7 @@
     "src"
   ],
   "scripts": {
+    "build": "webpack --mode=production",
     "test": "karmatic"
   },
   "repository": {
@@ -21,7 +22,8 @@
   "devDependencies": {
     "husky": "^3.1.0",
     "karmatic": "^2.1.0",
-    "webpack": "^4.44.1"
+    "webpack": "^4.44.1",
+    "webpack-cli": "^3.3.12"
   },
   "husky": {
     "hooks": {