fix standalone build

Author: Feiyang1

packages/database-compat/rollup.config.js

@@ -148,7 +148,7 @@ const cjsBuilds = [
     plugins: [
       ...es5BuildPlugins,
       resolveModule({
-        mainFields: ['standalone'],
+        exportConditions: ['standalone'],
         preferBuiltins: true
       }),
       commonjs()

packages/database/package.json

@@ -14,6 +14,8 @@
         "import": "./dist/node-esm/index.node.esm.js",
         "require": "./dist/index.node.cjs.js"
       },
+      "esm5": "./dist/index.esm5.js",
+      "standalone": "./dist/index.standalone.js",
       "default": "./dist/index.esm2017.js"
     },
     "./package.json": "./package.json"