[kbn/ui-shared-deps] track asset sizes

packages/kbn-ui-shared-deps/scripts/build.js

@@ -18,12 +18,14 @@
  */
 
 const Path = require('path');
+const Fs = require('fs');
 
-const { run, createFailError } = require('@kbn/dev-utils');
+const { run, createFailError, CiStatsReporter } = require('@kbn/dev-utils');
 const webpack = require('webpack');
 const Stats = require('webpack/lib/Stats');
 const del = require('del');
 
+const { distDir } = require('../index');
 const { getWebpackConfig } = require('../webpack.config');
 
 run(
@@ -42,6 +44,37 @@ run(
       const took = Math.round((stats.endTime - stats.startTime) / 1000);
 
       if (!stats.hasErrors() && !stats.hasWarnings()) {
+        if (!flags.dev) {
+          const reporter = CiStatsReporter.fromEnv(log);
+
+          const metrics = [
+            {
+              group: '@kbn/ui-shared-deps asset size',
+              id: 'kbn-ui-shared-deps.js',
+              value: Fs.statSync(Path.resolve(distDir, 'kbn-ui-shared-deps.js')).size,
+            },
+            {
+              group: '@kbn/ui-shared-deps asset size',
+              id: '[email protected]',
+              value: Fs.statSync(Path.resolve(distDir, '[email protected]')).size,
+            },
+            {
+              group: '@kbn/ui-shared-deps asset size',
+              id: 'css',
+              value:
+                Fs.statSync(Path.resolve(distDir, 'kbn-ui-shared-deps.css')).size +
+                Fs.statSync(Path.resolve(distDir, 'kbn-ui-shared-deps.v7.light.css')).size,
+            },
+          ];
+
+          log.debug('metrics:', metrics);
+
+          reporter.metrics(metrics).catch((error) => {
+            log.error('Failed to report stats with CiStatsReporter');
+            log.error(error);
+          });
+        }
+
         log.success(`webpack completed in about ${took} seconds`);
         return;
       }