fix error with running getUser immediately after initialization

ExtPay.dev.js

@@ -123,10 +123,20 @@ You can copy and paste this to your manifest.json file to fix this error:
         }
     }
 
-    // var paid_callbacks = [];
+    function timeout(ms) {
+        return new Promise(resolve => setTimeout(resolve, ms));
+    }
 
     async function fetch_user() {
-        const storage = await get(['extensionpay_api_key', 'extensionpay_user'])
+        var storage = await get(['extensionpay_api_key', 'extensionpay_user'])
+        // wait 10 seconds for api key to be returned if creator is running this in background.js immediately after extpay initialization
+        for (var i=0; i < 20; ++i) {
+            if (storage.extensionpay_api_key) break;
+            await timeout(500)
+            storage = await get(['extensionpay_api_key', 'extensionpay_user'])
+        }
+        if (!storage.extensionpay_api_key) throw 'Error registering user.'
+
         const resp = await fetch(`${EXTENSION_URL}/api/user?api_key=${storage.extensionpay_api_key}`, {
             method: 'GET',
             headers: {

dist/ExtPay.common.js

@@ -110,10 +110,20 @@ You can copy and paste this to your manifest.json file to fix this error:
         }
     }
 
-    // var paid_callbacks = [];
+    function timeout(ms) {
+        return new Promise(resolve => setTimeout(resolve, ms));
+    }
 
     async function fetch_user() {
-        const storage = await get(['extensionpay_api_key', 'extensionpay_user']);
+        var storage = await get(['extensionpay_api_key', 'extensionpay_user']);
+        // wait 10 seconds for api key to be returned if creator is running this in background.js immediately after extpay initialization
+        for (var i=0; i < 20; ++i) {
+            if (storage.extensionpay_api_key) break;
+            await timeout(500);
+            storage = await get(['extensionpay_api_key', 'extensionpay_user']);
+        }
+        if (!storage.extensionpay_api_key) throw 'Error registering user.'
+
         const resp = await fetch(`${EXTENSION_URL}/api/user?api_key=${storage.extensionpay_api_key}`, {
             method: 'GET',
             headers: {

dist/ExtPay.js

@@ -1339,10 +1339,20 @@ You can copy and paste this to your manifest.json file to fix this error:
 	        }
 	    }
 
-	    // var paid_callbacks = [];
+	    function timeout(ms) {
+	        return new Promise(resolve => setTimeout(resolve, ms));
+	    }
 
 	    async function fetch_user() {
-	        const storage = await get(['extensionpay_api_key', 'extensionpay_user']);
+	        var storage = await get(['extensionpay_api_key', 'extensionpay_user']);
+	        // wait 10 seconds for api key to be returned if creator is running this in background.js immediately after extpay initialization
+	        for (var i=0; i < 20; ++i) {
+	            if (storage.extensionpay_api_key) break;
+	            await timeout(500);
+	            storage = await get(['extensionpay_api_key', 'extensionpay_user']);
+	        }
+	        if (!storage.extensionpay_api_key) throw 'Error registering user.'
+
 	        const resp = await fetch(`${EXTENSION_URL}/api/user?api_key=${storage.extensionpay_api_key}`, {
 	            method: 'GET',
 	            headers: {

dist/ExtPay.module.js

@@ -108,10 +108,20 @@ You can copy and paste this to your manifest.json file to fix this error:
         }
     }
 
-    // var paid_callbacks = [];
+    function timeout(ms) {
+        return new Promise(resolve => setTimeout(resolve, ms));
+    }
 
     async function fetch_user() {
-        const storage = await get(['extensionpay_api_key', 'extensionpay_user']);
+        var storage = await get(['extensionpay_api_key', 'extensionpay_user']);
+        // wait 10 seconds for api key to be returned if creator is running this in background.js immediately after extpay initialization
+        for (var i=0; i < 20; ++i) {
+            if (storage.extensionpay_api_key) break;
+            await timeout(500);
+            storage = await get(['extensionpay_api_key', 'extensionpay_user']);
+        }
+        if (!storage.extensionpay_api_key) throw 'Error registering user.'
+
         const resp = await fetch(`${EXTENSION_URL}/api/user?api_key=${storage.extensionpay_api_key}`, {
             method: 'GET',
             headers: {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "extpay",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "The JavaScript library for https://extensionpay.com - payments for browser extensions, no server needed.",
   "main": "./dist/ExtPay.common.js",
   "module": "./dist/ExtPay.module.js",

sample-extension/ExtPay.js

@@ -1339,10 +1339,20 @@ You can copy and paste this to your manifest.json file to fix this error:
 	        }
 	    }
 
-	    // var paid_callbacks = [];
+	    function timeout(ms) {
+	        return new Promise(resolve => setTimeout(resolve, ms));
+	    }
 
 	    async function fetch_user() {
-	        const storage = await get(['extensionpay_api_key', 'extensionpay_user']);
+	        var storage = await get(['extensionpay_api_key', 'extensionpay_user']);
+	        // wait 10 seconds for api key to be returned if creator is running this in background.js immediately after extpay initialization
+	        for (var i=0; i < 20; ++i) {
+	            if (storage.extensionpay_api_key) break;
+	            await timeout(500);
+	            storage = await get(['extensionpay_api_key', 'extensionpay_user']);
+	        }
+	        if (!storage.extensionpay_api_key) throw 'Error registering user.'
+
 	        const resp = await fetch(`${EXTENSION_URL}/api/user?api_key=${storage.extensionpay_api_key}`, {
 	            method: 'GET',
 	            headers: {

sample-extension/background.js

@@ -1,2 +1,6 @@
 // this line is required in background.js to use ExtPay!
 var extpay = ExtPay('sample-extension');
+
+extpay.getUser().then(user => {
+	console.log(user)
+})