feat: add createMain utility (#65)

README.md

@@ -82,6 +82,10 @@ runMain(main);
 
 Runs a command with usage support and graceful error handling.
 
+### `createMain`
+
+Create a wrapper around command that calls `runMain` when called.
+
 ### `runCommand`
 
 Parses input args and runs command and sub-commands (unsupervised).

playground/hello.ts

@@ -1,7 +1,7 @@
-import consola from 'consola'
-import { defineCommand, runMain } from "../src";
+import consola from "consola";
+import { defineCommand, createMain } from "../src";
 
-const main = defineCommand({
+const command = defineCommand({
   meta: {
     name: "hello",
     version: "1.0.0",
@@ -23,4 +23,4 @@ const main = defineCommand({
   },
 });
 
-runMain(main);
+createMain(command)();

src/index.ts

@@ -5,4 +5,4 @@ export type { RunMainOptions } from "./main";
 export { defineCommand, runCommand } from "./command";
 export { parseArgs } from "./args";
 export { renderUsage, showUsage } from "./usage";
-export { runMain } from "./main";
+export { runMain, createMain } from "./main";

src/main.ts

@@ -32,3 +32,9 @@ export async function runMain<T extends ArgsDef = ArgsDef>(
     process.exit(1);
   }
 }
+
+export function createMain<T extends ArgsDef = ArgsDef>(
+  cmd: CommandDef<T>,
+): (opts?: RunMainOptions) => Promise<void> {
+  return (opts: RunMainOptions = {}) => runMain(cmd, opts);
+}