share tslib across bundles (#79915)

Co-authored-by: spalger <[email protected]>

Author: Spencer

packages/kbn-ui-shared-deps/entry.js

@@ -53,5 +53,8 @@ export const ElasticEuiChartsTheme = require('@elastic/eui/dist/eui_charts_theme
 export const Lodash = require('lodash');
 export const LodashFp = require('lodash/fp');
 
+// runtime deps which don't need to be copied across all bundles
+export const TsLib = require('tslib');
+
 import * as Theme from './theme.ts';
 export { Theme };

packages/kbn-ui-shared-deps/index.js

@@ -63,5 +63,10 @@ exports.externals = {
   '@elastic/eui/dist/eui_theme_dark.json': '__kbnSharedDeps__.Theme.euiDarkVars',
   lodash: '__kbnSharedDeps__.Lodash',
   'lodash/fp': '__kbnSharedDeps__.LodashFp',
+
+  /**
+   * runtime deps which don't need to be copied across all bundles
+   */
+  tslib: '__kbnSharedDeps__.TsLib',
 };
 exports.publicPathLoader = require.resolve('./public_path_loader');

packages/kbn-ui-shared-deps/package.json

@@ -33,6 +33,7 @@
     "rxjs": "^6.5.5",
     "styled-components": "^5.1.0",
     "symbol-observable": "^1.2.0",
+    "tslib": "^2.0.0",
     "whatwg-fetch": "^3.0.0"
   },
   "devDependencies": {