rspack: hopefully better browser compat for frontend javascript

Author: williamstein

src/packages/static/package.json

@@ -22,6 +22,7 @@
     "test": "pnpm exec jest",
     "prepublishOnly": "pnpm test"
   },
+  "browserslist": ["defaults"],
   "repository": {
     "type": "git",
     "url": "https://github.com/sagemathinc/cocalc"

src/packages/static/src/rspack.config.ts

@@ -149,6 +149,7 @@ export default function getConfig({ middleware }: Options = {}) {
   }
 
   const config = {
+    target: "browserslist",
     ignoreWarnings: [/Failed to parse source map/],
     devtool: PRODMODE ? undefined : "eval-cheap-module-source-map",
     mode: PRODMODE