fix(runtime): Add --esm flag to generate action, to export ".zenstack/models" in ESM format

Author: diesal11

packages/schema/src/cli/index.ts

@@ -125,6 +125,7 @@ export function createProgram() {
         .addOption(new Option('--without-plugins <plugins...>', 'exclude specific plugins'))
         .addOption(new Option('--no-default-plugins', 'do not run default plugins'))
         .addOption(new Option('--no-compile', 'do not compile the output of core plugins'))
+        .addOption(new Option('--esm', 'generate output for ESM instead of CommonJS'))
         .addOption(noVersionCheckOption)
         .addOption(noDependencyCheckOption)
         .addOption(offlineOption)

packages/schema/src/plugins/enhancer/enhance/index.ts

@@ -128,7 +128,12 @@ export class EnhancerGenerator {
         await modelsDts.save();
 
         // reexport values from the original PrismaClient (enums, etc.)
-        fs.writeFileSync(path.join(this.outDir, 'models.js'), `module.exports = require('${prismaImport}');`);
+        const modelsBody =
+            this.options.esm ?? false
+                ? `export * from '${prismaImport}';`
+                : `module.exports = require('${prismaImport}');`;
+
+        fs.writeFileSync(path.join(this.outDir, 'models.js'), modelsBody);
 
         const authDecl = getAuthDecl(getDataModelAndTypeDefs(this.model));
         const authTypes = authDecl ? generateAuthType(this.model, authDecl) : '';
@@ -338,6 +343,7 @@ export type Enhanced<Client> =
             overrideClientGenerationPath: prismaClientOutDir,
             mode: 'logical',
             customAttributesAsComments: true,
+            isEsm: this.options.isEsm,
         });
 
         // reverse direction of shortNameMap and store for future lookup

packages/sdk/src/types.ts

@@ -42,6 +42,10 @@ export type PluginOptions = {
      * @private
      */
     shortNameMap?: Map<string, string>;
+    /**
+     * Is the plugin generating into an ESM project?
+     */
+    esm?: boolean;
 } & PluginDeclaredOptions;
 
 /**