Serve static assets from NP (#60490)

* add hapi.inert plugin to NP

* update tests

* move serving static assets

* update tests

* add functional tests

* fix type errors. Hapi.Request doesn't support typings for payload

* update docs

* remove comment

* move assets to NP

* update all assets references

* address Spencer's comments

* move ui settings migration to migration examples

* document legacy plugin spec

* move platform assets test to integration_tests

* address Spencer's comment p.2

* try to fix type errors

* fix merge commit

* update tests

Author: mshustov

package.json

@@ -65,7 +65,7 @@
     "uiFramework:documentComponent": "cd packages/kbn-ui-framework && yarn documentComponent",
     "kbn:watch": "node scripts/kibana --dev --logging.json=false",
     "build:types": "tsc --p tsconfig.types.json",
-    "docs:acceptApiChanges": "node scripts/check_published_api_changes.js --accept",
+    "docs:acceptApiChanges": "node  --max-old-space-size=6144  scripts/check_published_api_changes.js --accept",
     "kbn:bootstrap": "yarn build:types && node scripts/register_git_hook",
     "spec_to_console": "node scripts/spec_to_console",
     "backport-skip-ci": "backport --prDescription \"[skip-ci]\"",
@@ -330,11 +330,13 @@
     "@types/glob": "^7.1.1",
     "@types/globby": "^8.0.0",
     "@types/graphql": "^0.13.2",
+    "@types/h2o2": "^8.1.1",
     "@types/hapi": "^17.0.18",
     "@types/hapi-auth-cookie": "^9.1.0",
     "@types/has-ansi": "^3.0.0",
     "@types/history": "^4.7.3",
     "@types/hoek": "^4.1.3",
+    "@types/inert": "^5.1.2",
     "@types/jest": "24.0.19",
     "@types/joi": "^13.4.2",
     "@types/jquery": "^3.3.31",

packages/kbn-optimizer/src/worker/webpack.config.ts

@@ -131,12 +131,21 @@ export function getWebpackConfig(bundle: Bundle, worker: WorkerConfig) {
                   loader: 'resolve-url-loader',
                   options: {
                     join: (_: string, __: any) => (uri: string, base?: string) => {
-                      if (!base) {
+                      // apply only to legacy platform styles
+                      if (!base || !parseDirPath(base).dirs.includes('legacy')) {
                         return null;
                       }
 
+                      if (uri.startsWith('ui/assets')) {
+                        return Path.resolve(
+                          worker.repoRoot,
+                          'src/core/server/core_app/',
+                          uri.replace('ui/', '')
+                        );
+                      }
+
                       // manually force ui/* urls in legacy styles to resolve to ui/legacy/public
-                      if (uri.startsWith('ui/') && parseDirPath(base).dirs.includes('legacy')) {
+                      if (uri.startsWith('ui/')) {
                         return Path.resolve(
                           worker.repoRoot,
                           'src/legacy/ui/public',

packages/kbn-storybook/storybook_config/middleware.js

@@ -22,5 +22,5 @@ const path = require('path');
 
 // Extend the Storybook Middleware to include a route to access Legacy UI assets
 module.exports = function(router) {
-  router.get('/ui', serve(path.resolve(__dirname, '../../../../src/legacy/ui/public/assets')));
+  router.get('/ui', serve(path.resolve(__dirname, '../../../src/core/server/core_app/assets')));
 };