feat(utils): adds expose

src/utils/expose.ts

@@ -0,0 +1,26 @@
+import { TScriptFn } from '~/types';
+import { wrap } from './errors';
+
+export type TExposed<T extends (...args: any[]) => TScriptFn> = T & {
+  fn: TExposedFn<T, ReturnType<T>>;
+};
+export type TExposedFn<T, R extends TScriptFn> = T extends (
+  ...args: infer U
+) => R
+  ? (...args: U) => ReturnType<R>
+  : T;
+
+export default function expose<T extends (...args: any[]) => TScriptFn>(
+  fn: T
+): TExposed<T> {
+  const exposed = function(...args: any[]) {
+    return (argv?: string[]) => {
+      return wrap.throws(() => fn(...args)(argv));
+    };
+  };
+  exposed.fn = function(...args: any[]) {
+    return exposed(...args)([]);
+  };
+
+  return exposed as any;
+}