feat(swc): Move beta announcement to --help (#185)

README.md

@@ -4,3 +4,9 @@
 See our website [swc-cli][] for more information or the issues associated with this package.
 
 [swc-cli]: https://swc.rs/docs/usage-swc-cli
+
+## @swc/cli@1 beta version is available
+
+Beta version of @swc/cli is now available via `swcx command.
+This'll be a default command for @swc/cli@1.
+Please give it a try and report any issues at https://github.com/swc-project/swc/issues/4017

package.json

@@ -4,7 +4,6 @@
   "description": "CLI for the swc project",
   "main": "lib/swc/index.js",
   "scripts": {
-    "postinstall": "echo \"Beta version of @swc/cli is now available via 'swcx' command. This'll be a default command for @swc/cli@1. Please give it a try and let us know if there are problems!\"",
     "prepublishOnly": "yarn build && yarn test && yarn types",
     "types": "tsc",
     "types:watch": "tsc --watch",
@@ -83,4 +82,4 @@
     "bin",
     "lib"
   ]
-}
+}

src/swc/options.ts

@@ -116,6 +116,17 @@ export const initProgram = () => {
 `);
 
   program.usage("[options] <files ...>");
+  program.addHelpText(
+    "beforeAll",
+    `
+============================================================================================
+Beta version of @swc/cli is now available via 'swcx' command.
+This'll be a default command for @swc/cli@1.
+Please give it a try and report any issues at https://github.com/swc-project/swc/issues/4017
+============================================================================================
+
+`
+  );
 };
 
 function unstringify(val: string): any {