chore: consts for default fees

Author: samsiegart

packages/react-components/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@agoric/react-components",
-  "version": "0.5.1",
+  "version": "0.5.2",
   "repository": {
     "type": "git",
     "url": "https://github.com/agoric/ui-kit"

packages/web-components/package.json

@@ -3,7 +3,7 @@
   "description": "Webcomponents for Agoric dapps",
   "license": "Apache-2.0",
   "author": "Agoric",
-  "version": "0.17.1",
+  "version": "0.17.2",
   "main": "dist/index.js",
   "scripts": {
     "prepack": "tsc --build tsconfig.build.json",

packages/web-components/src/wallet-connection/makeAgoricSigner.ts

@@ -18,11 +18,15 @@ const PowerFlags = {
   SMART_WALLET: 'SMART_WALLET',
 };
 
+// Empirically Keplr seems to use 15000 ubld and 300000 gas for medium fee preset.
+const defaultFeeAmount = '15000';
+const defaultFeeGas = '300000';
+
 const defaultFee = (): StdFee => {
   const { coinMinimalDenom: denom } = stakeCurrency;
   const fee = {
-    amount: [{ amount: '15000', denom }],
-    gas: '300000', // TODO: estimate gas?
+    amount: [{ amount: defaultFeeAmount, denom }],
+    gas: defaultFeeGas, // TODO: estimate gas?
   };
   return fee;
 };