Add lighthouse command

Author: mattolson

Diff for: lighthouse-config.js

@@ -0,0 +1,46 @@
+const throttling = {
+    disabled: {
+        rttMs: 0,
+        throughputKbps: 0,
+        requestLatencyMs: 0,
+        downloadThroughputKbps: 0,
+        uploadThroughputKbps: 0,
+        cpuSlowdownMultiplier: 0,
+    }
+};
+
+module.exports = {
+    settings: {
+        output: 'json',
+        maxWaitForLoad: 45 * 1000,
+        throttlingMethod: 'provided',
+        throttling: throttling.disabled,
+        auditMode: false,
+        gatherMode: false,
+        disableStorageReset: false,
+        disableDeviceEmulation: true,
+        emulatedFormFactor: 'none',
+        blockedUrlPatterns: null,
+        additionalTraceCategories: null,
+        extraHeaders: null,
+        onlyAudits: null,
+        onlyCategories: null,
+        skipAudits: null,
+    },
+    passes: [
+        {
+            passName: 'defaultPass',
+            recordTrace: true,
+            useThrottling: false,
+            pauseAfterLoadMs: 1000,
+            networkQuietThresholdMs: 1000,
+            cpuQuietThresholdMs: 1000,
+            gatherers: [],
+        },
+    ],
+    audits: [
+        'time-to-first-byte',
+        'metrics/first-meaningful-paint',
+        'metrics/interactive',
+    ],
+};

Diff for: package.json

@@ -52,6 +52,7 @@
     "karma-sourcemap-loader": "0.3.7",
     "karma-verbose-reporter": "0.0.6",
     "karma-webpack": "^2.0.4",
+    "lighthouse": "^4.0.0-alpha.2-3.2.1",
     "load-grunt-config": "^0.19.2",
     "lodash-webpack-plugin": "^0.11.2",
     "npx": "^10.2.0",
@@ -62,7 +63,8 @@
     "webpack-merge": "^4.1.2"
   },
   "scripts": {
-    "build": "webpack --config webpack.prod.js",
-    "buildDev": "webpack --config webpack.dev.js"
+    "build": "npx webpack --config webpack.prod.js",
+    "buildDev": "npx webpack --config webpack.dev.js",
+    "lighthouse": "npx lighthouse --config-path=lighthouse-config.js --quiet --output json --chrome-flags=\"--headless\" $URL | jq '.audits | map_values(.rawValue)'"
   }
 }