Fix json mode (#124)

* fix(contracts): output well formed json from --json flag

* feat(cli): if json flag is specified do not display app banner or nudge users to upgrade

Author: joshi4

src/index.ts

@@ -26,7 +26,9 @@ import { registerVM } from "./lib/vm.ts";
 
 const program = new Command();
 
-await Promise.all([checkVersion(), getAppBanner()]);
+if (!process.argv.includes("--json")) {
+  await Promise.all([checkVersion(), getAppBanner()]);
+}
 
 program
   .name("sf")

src/lib/contracts/index.tsx

@@ -47,11 +47,11 @@ export function registerContracts(program: Command) {
         )
         .description("List all contracts")
         .action(async (options) => {
+          const contracts = await listContracts(options.all, options.state);
           if (options.json) {
-            console.log(await listContracts(options.all, options.state));
+            console.log(JSON.stringify(contracts, null, 2));
           } else {
-            const data = await listContracts(options.all, options.state);
-            render(<ContractList contracts={data} />);
+            render(<ContractList contracts={contracts} />);
           }
         }),
     );