feat(capacitor): bundle store.js into ES module export

Users can now import the store directly:

  import { store, ProductType, Platform } from 'capacitor-plugin-cdv-purchase';

No more separate <script src="/store.js"> tag, no load ordering
issues, no platform.ready() workaround needed.

Implementation:
- Rollup virtual module plugin inlines www/store.js into the bundle
- Strips the Cordova setTimeout(initCDVPurchase) path so the store
  initializes synchronously (Capacitor has a Cordova shim that would
  otherwise delay it past module evaluation)
- build/entry.mjs re-exports named conveniences (store, ProductType,
  Platform, LogLevel, ErrorCode, Logger, Iaptic, CdvPurchase)
- types/index.d.ts provides typed declarations via the ambient
  CdvPurchase namespace from www/store.d.ts
- package.json: types -> types/index.d.ts, added exports map

Author: j3k0

capacitor/build/entry.mjs

@@ -0,0 +1,18 @@
+// Capacitor bridge — sets CdvPurchaseCapacitor marker and registers native plugin
+export { PurchasePlugin } from '../dist/esm/index.js';
+
+// Store runtime — executes the IIFE, creates window.CdvPurchase
+import { CdvPurchase } from 'virtual:store-js';
+
+// Re-export the full namespace
+export { CdvPurchase };
+
+// Convenience named exports
+export const store = CdvPurchase.store;
+export const Store = CdvPurchase.Store;
+export const ProductType = CdvPurchase.ProductType;
+export const Platform = CdvPurchase.Platform;
+export const LogLevel = CdvPurchase.LogLevel;
+export const ErrorCode = CdvPurchase.ErrorCode;
+export const Logger = CdvPurchase.Logger;
+export const Iaptic = CdvPurchase.Iaptic;

capacitor/package.json

@@ -4,7 +4,14 @@
   "description": "In-App Purchases for Capacitor — iOS (StoreKit 2) and Android (Google Play Billing)",
   "main": "dist/index.js",
   "module": "dist/index.js",
-  "types": "dist/index.d.ts",
+  "types": "types/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./types/index.d.ts",
+      "import": "./dist/index.js",
+      "default": "./dist/index.js"
+    }
+  },
   "capacitor": {
     "ios": { "src": "ios" },
     "android": { "src": "android" }
@@ -19,12 +26,14 @@
     "typescript": "^5.0.0"
   },
   "scripts": {
-    "build": "tsc && rollup -c rollup.config.mjs && cp dist/esm/*.d.ts dist/",
+    "build": "tsc && rollup -c rollup.config.mjs",
     "prepublishOnly": "npm run build"
   },
   "files": [
     "dist/",
+    "types/",
     "www/",
+    "build/",
     "android/",
     "ios/"
   ],

capacitor/rollup.config.mjs

@@ -1,12 +1,47 @@
 import resolve from '@rollup/plugin-node-resolve';
+import { readFileSync } from 'fs';
+import { fileURLToPath } from 'url';
+import { dirname, join } from 'path';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+
+/**
+ * Rollup plugin that serves www/store.js as a virtual ES module.
+ * Appends `export { CdvPurchase }` so the IIFE-defined variable
+ * can be imported by the entry file.
+ */
+function storeJsPlugin() {
+  const VIRTUAL_ID = 'virtual:store-js';
+  const RESOLVED_ID = '\0' + VIRTUAL_ID;
+
+  return {
+    name: 'store-js',
+    resolveId(id) {
+      if (id === VIRTUAL_ID) return RESOLVED_ID;
+    },
+    load(id) {
+      if (id === RESOLVED_ID) {
+        let storeJs = readFileSync(join(__dirname, 'www', 'store.js'), 'utf-8');
+        // In Capacitor, window.cordova exists (Cordova shim) which causes
+        // initCDVPurchase to be called via setTimeout — too late for ES module
+        // exports. Force synchronous initialization.
+        storeJs = storeJs.replace(
+          /if \(window\.cordova\) \{[\s\S]*?setTimeout\(initCDVPurchase.*?\)[\s\S]*?\}\s*else \{\s*initCDVPurchase\(\);\s*\}/,
+          'initCDVPurchase();'
+        );
+        return storeJs + '\nexport { CdvPurchase };\n';
+      }
+    }
+  };
+}
 
 export default {
-  input: 'dist/esm/index.js',
+  input: 'build/entry.mjs',
   output: {
     file: 'dist/index.js',
     format: 'es',
     sourcemap: true
   },
-  plugins: [resolve()],
+  plugins: [storeJsPlugin(), resolve()],
   external: ['@capacitor/core']
 };

capacitor/types/index.d.ts

@@ -0,0 +1,27 @@
+/// <reference path="../www/store.d.ts" />
+
+// Native bridge
+import type { PurchasePluginPlugin } from '../dist/esm/definitions';
+export declare const PurchasePlugin: PurchasePluginPlugin;
+export type { PurchasePluginPlugin };
+
+// Full namespace
+export declare const CdvPurchase: typeof globalThis.CdvPurchase;
+
+// Convenience value exports
+export declare const store: CdvPurchase.Store;
+export declare const Store: typeof CdvPurchase.Store;
+export declare const ProductType: typeof CdvPurchase.ProductType;
+export declare const Platform: typeof CdvPurchase.Platform;
+export declare const LogLevel: typeof CdvPurchase.LogLevel;
+export declare const ErrorCode: typeof CdvPurchase.ErrorCode;
+export declare const Logger: typeof CdvPurchase.Logger;
+export declare const Iaptic: typeof CdvPurchase.Iaptic;
+
+// Convenience type re-exports
+export type IError = CdvPurchase.IError;
+export type Product = CdvPurchase.Product;
+export type Offer = CdvPurchase.Offer;
+export type Transaction = CdvPurchase.Transaction;
+export type Receipt = CdvPurchase.Receipt;
+export type VerifiedReceipt = CdvPurchase.VerifiedReceipt;