Update example evm and js

Author: darunrs

lazer/evm/src/ExampleReceiver.sol

@@ -55,6 +55,14 @@ contract ExampleReceiver {
                     uint64 _price;
                     (_price, pos) = PythLazerLib.parseFeedValueUint64(payload, pos);
                     console.log("best ask price %d", _price);
+                } else if (property == PythLazerLib.PriceFeedProperty.Exponent) {
+                    int16 _exponent;
+                    (_exponent, pos) = PythLazerLib.parseFeedValueInt16(payload, pos);
+                    console.log("exponent %d", _exponent);
+                } else if (property == PythLazerLib.PriceFeedProperty.PublisherCount) {
+                    int16 _publisher_count;
+                    (_publisher_count, pos) = PythLazerLib.parseFeedValueUint16(payload, pos);
+                    console.log("publisher count %d", _publisher_count);
                 } else {
                     revert("unknown property");
                 }

lazer/evm/test/ExampleReceiver.t.sol

@@ -25,14 +25,16 @@ contract ExampleReceiverTest is Test {
 
         ExampleReceiver receiver = new ExampleReceiver(address(pythLazer));
         bytes memory update =
-            hex"2a22999a577d3cc0202197939d736bc0dcf71b9dde7b9470e4d16fa8e2120c0787a1c0d744d0c39cc372af4d1ecf2d09e84160ca905f3f597d20e2eec144a446a0459ad600001c93c7d3750006240af373971c01010000000201000000000005f5e100";
+            hex"2a22999a9ee4e2a3df5affd0ad8c7c46c96d3b5ef197dd653bedd8f44a4b6b69b767fbc66341e80b80acb09ead98c60d169b9a99657ebada101f447378f227bffbc69d3d01003493c7d37500062cf28659c1e801010000000605000000000005f5e10002000000000000000001000000000000000003000104fff8";
         console.logBytes(update);
 
         vm.prank(consumer);
         receiver.updatePrice{value: 5 * fee}(update);
 
+        assertEq(receiver.timestamp(), 1738270008001000);
         assertEq(receiver.price(), 100000000);
-        assertEq(receiver.timestamp(), 1728479312975644);
+        assertEq(receiver.exponent(), -8);
+        assertEq(receiver.publisherCount(), 1);
 
         assertEq(address(pythLazer).balance, fee);
         assertEq(address(receiver).balance, 0);

lazer/js/package.json

@@ -16,7 +16,7 @@
   "author": "",
   "license": "Apache-2.0",
   "dependencies": {
-    "@pythnetwork/pyth-lazer-sdk": "^0.3.1",
+    "@pythnetwork/pyth-lazer-sdk": "^0.4.0",
     "@solana/web3.js": "^1.98.0"
   },
   "devDependencies": {

lazer/js/src/publish.ts

@@ -168,7 +168,7 @@ const main = async () => {
     properties: ["price"],
     chains: ["solana"],
     deliveryFormat: "json",
-    channel: "real_time",
+    channel: "fixed_rate@1ms",
     jsonBinaryEncoding: "hex",
   });
 };