fix(rest): Use namespace import for path-to-regexp CJS interop

.changeset/fix-stackblitz-cjs-interop.md

@@ -0,0 +1,11 @@
+---
+'@data-client/rest': patch
+---
+
+Fix StackBlitz WebContainers compatibility with path-to-regexp
+
+Use namespace import (`import *`) instead of named imports for the CJS
+`path-to-regexp` dependency. Named imports trigger webpack's per-export
+presence validation, which fails in StackBlitz's WebContainers environment.
+Namespace imports defer property access to runtime, bypassing the check
+with no tree-shaking loss.

packages/rest/src/RestHelpers.ts

@@ -1,11 +1,11 @@
-import {
-  compile,
-  PathFunction,
-  parse,
-  pathToRegexp,
-  Token,
-  ParamData,
-} from 'path-to-regexp';
+// Namespace import avoids webpack's per-export CJS validation, which fails in
+// StackBlitz WebContainers. Named imports (`import { compile }`) trigger
+// `importExportsPresence` checks that break there. `import *` defers property
+// access to runtime. No tree-shaking loss: CJS modules are included whole
+// regardless of import style, and webpack 5 traces static access on namespaces.
+import type { PathFunction, Token, ParamData } from 'path-to-regexp';
+import * as pathToRegexpModule from 'path-to-regexp';
+const { compile, parse, pathToRegexp } = pathToRegexpModule;
 
 import { ShortenPath } from './pathTypes.js';