fix: Correctly export ESM modules

Author: d3xter666

internal/npm-integration-poc/lib/plugins/rollup-plugin-ui5-amd-exports.js

@@ -0,0 +1,50 @@
+/**
+ * Rollup Plugin: UI5 AMD Exports
+ *
+ * Transforms Rollup's named exports pattern:
+ *   sap.ui.define(['exports'], function(exports) { exports.foo = ...; })
+ *
+ * Into UI5-compatible pattern:
+ *   sap.ui.define([], function() { const exports = {}; ...; return exports; })
+ *
+ * This is necessary because UI5's sap.ui.define doesn't support the 'exports' dependency.
+ */
+
+export default function ui5AmdExportsPlugin() {
+	return {
+		name: "ui5-amd-exports",
+		renderChunk(code) {
+			// Pattern: sap.ui.define(['exports'], (function (exports) { 'use strict';
+			const exportsPattern = /^(sap\.ui\.define\(\[)'exports'(\],\s*\(function\s*\()(\w+)(\)\s*\{\s*'use strict';)/;
+			const match = code.match(exportsPattern);
+
+			if (!match) {
+				// No exports dependency, return as-is
+				return null;
+			}
+
+			// Get the parameter name (usually 'exports', but could be mangled)
+			const exportsVarName = match[3];
+
+			// Transform the code:
+			// 1. Remove 'exports' from dependencies
+			// 2. Remove parameter from function
+			// 3. Add const declaration at the start
+			// 4. Add return statement at the end
+
+			let transformed = code;
+
+			// Remove 'exports' dependency and parameter, add const declaration
+			transformed = transformed.replace(
+				exportsPattern,
+				`$1$2$4\n\n  const ${exportsVarName} = {};`
+			);
+
+			// Add return statement before the closing }));
+			const closingPattern = /(\s*)\}\)\);?\s*$/;
+			transformed = transformed.replace(closingPattern, `\n$1  return ${exportsVarName};\n$1}));\n`);
+
+			return {code: transformed, map: null};
+		}
+	};
+}

internal/npm-integration-poc/scenarios/shared-config.js

@@ -10,6 +10,7 @@ import commonjs from "@rollup/plugin-commonjs";
 import {mkdir, writeFile} from "fs/promises";
 import {dirname, join} from "path";
 import {fileURLToPath} from "url";
+import ui5AmdExportsPlugin from "../lib/plugins/rollup-plugin-ui5-amd-exports.js";
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
 
@@ -49,7 +50,8 @@ export async function generateAMDBundle(config) {
 		format: "amd",
 		amd: {
 			define: "sap.ui.define"
-		}
+		},
+		plugins: [ui5AmdExportsPlugin()]
 	});
 
 	return output[0].code;
@@ -68,7 +70,8 @@ export async function generateAMDBundleWithOutput(config) {
 		format: "amd",
 		amd: {
 			define: "sap.ui.define"
-		}
+		},
+		plugins: [ui5AmdExportsPlugin()]
 	});
 
 	return output;