update arguments

Author: omermecitoglu

src/core/arguments.ts

@@ -6,22 +6,43 @@ const argv = yargs
     describe: "Specify the output directory",
     type: "string",
     demandOption: false,
+    default: "dist",
   })
   .option("framework", {
     alias: "f",
     describe: "Specify the target framework",
     type: "string",
     demandOption: false,
+    default: null,
   })
   .option("schemas", {
     alias: "s",
     describe: "Specify the path for predefined zod schemas",
     type: "string",
     demandOption: false,
+    default: null,
   })
   .argv;
 
-export default async function getArgument(name: string) {
+type RemoveKeys<T, K extends keyof T> = {
+  [P in keyof T as P extends K ? never : P]: T[P];
+};
+
+type RemoveIndex<T> = {
+  [K in keyof T as
+  string extends K
+    ? never
+    : number extends K
+      ? never
+      : symbol extends K
+        ? never
+        : K
+  ]: T[K];
+};
+
+type Arguments = RemoveKeys<RemoveIndex<Awaited<typeof argv>>, "_" | "$0">;
+
+export default async function getArgument<N extends keyof Arguments>(name: N) {
   const a = argv instanceof Promise ? await argv : argv;
-  return a[name] as string | undefined;
+  return a[name] as Arguments[N];
 }

src/index.ts

@@ -8,12 +8,12 @@ import createFile from "./core/file";
 import findPredefinedSchemas from "./core/schemas";
 
 (async () => {
-  const outputFolder = await getArgument("output") ?? "dist";
+  const outputFolder = await getArgument("output");
   const outputDir = path.resolve(process.cwd(), outputFolder);
 
-  const framework = await getArgument("framework") ?? null;
+  const framework = await getArgument("framework");
 
-  const schemaPaths = await getArgument("schemas") ?? null;
+  const schemaPaths = await getArgument("schemas");
   const schemas = await findPredefinedSchemas(schemaPaths);
 
   const spec = await generateOpenApiSpec(schemas);