Merge pull request #28308 from backstage/rugvip/modules

cli: add support for native ESM in Node.js packages

packages/cli-node/report.api.md

@@ -72,6 +72,8 @@ export interface BackstagePackageJson {
     [key: string]: string;
   };
   // (undocumented)
+  type?: 'module' | 'commonjs';
+  // (undocumented)
   types?: string;
   // (undocumented)
   typesVersions?: Record<string, Record<string, string[]>>;

packages/cli-node/src/monorepo/PackageGraph.ts

@@ -43,6 +43,8 @@ export interface BackstagePackageJson {
   // that the package bundles all of its dependencies in its build output.
   bundled?: boolean;
 
+  type?: 'module' | 'commonjs';
+
   backstage?: {
     role?: PackageRole;
     moved?: string;