remove #platform import codes

Author: kazrael2119

packages/typespec-ts/src/framework/hooks/binder.ts

@@ -22,9 +22,6 @@ export interface DeclarationInfo {
 export interface BinderOptions {
   staticHelpers?: Map<string, StaticHelperMetadata>;
   dependencies?: Record<string, ReferenceableSymbol>;
-  /** When true, use #platform/ subpath imports for static helpers with platform variants.
-   *  Should be true for warp packages; false for tshy packages. */
-  useSubpathImports?: boolean;
 }
 
 export interface Binder {

packages/typespec-ts/src/index.ts

@@ -502,8 +502,7 @@ export async function $onEmit(context: EmitContext) {
         }),
       };
 
-      // Always update package.json (adds #platform/* imports) along with
-      // exports, clientContextPaths and LRO deps.
+      // Always update package.json exports, clientContextPaths and LRO deps.
       {
         // Read package.json content via host and pass parsed object
         const pkgSourceFile = await host.readFile(existingPackageFilePath);

packages/typespec-ts/src/metadata/build-package-file.ts

@@ -99,30 +99,6 @@ export function updatePackageFile(
     needsCoreClientUpdate = true;
   }
 
-  // Ensure warp packages have #platform/* imports for polyfill resolution.
-  // The `react-native` condition is only added when explicitly opted in via
-  // `generateReactNativeTarget`, matching the fresh-generation path in
-  // `getEsmEntrypointInformation` (packageCommon.ts).
-  const platformImports: Record<string, string> = {
-    browser: "./src/*-browser.mts",
-    default: "./src/*.ts",
-  };
-  if (model.options?.generateReactNativeTarget) {
-    // Insert `react-native` before `default` so Node's conditional
-    // resolution order matches the fresh-generation output.
-    packageInfo.imports = {
-      "#platform/*": {
-        browser: platformImports["browser"],
-        "react-native": "./src/*-react-native.mts",
-        default: platformImports["default"],
-      },
-    };
-  } else {
-    packageInfo.imports = {
-      "#platform/*": platformImports,
-    };
-  }
-
   // Update exports (warp: resolved exports in package.json)
   if (needsExportsUpdate) {
     packageInfo.exports = resolveWarpExports(exports, model.options?.generateReactNativeTarget);

packages/typespec-ts/src/metadata/build-warp-config.ts

@@ -61,8 +61,6 @@ targets:
  * Builds a self-contained warp.config.yml file.
  *
  * Emits a full inline config with all exports and targets.
- * Polyfill resolution (browser/react-native file substitution) is handled
- * via package.json `imports` subpath imports (#platform/*).
  *
  * By default, react-native target is NOT included. Set `generateReactNativeTarget: true`
  * in options to include it.