fix: resolve alias value over default (#228)

Author: kricsleo

src/_parser.ts

@@ -170,6 +170,9 @@ export function parseRawArgs<T = Record<string, any>>(
     if ((out as any)[main] !== undefined && (out as any)[alias] === undefined) {
       (out as any)[alias] = (out as any)[main];
     }
+    if ((out as any)[alias] !== (out as any)[main] && defaults[main] === (out as any)[main]) {
+      (out as any)[main] = (out as any)[alias];
+    }
   }
 
   return out;

test/args.test.ts

@@ -45,6 +45,11 @@ describe("args", () => {
       { value: { type: "enum", options: ["one", "two"] } },
       { value: "one", _: [] },
     ],
+    [
+      ["--foo-bar", "one"],
+      { fooBar: { type: "enum", options: ["one", "two"], default: "two" } },
+      { fooBar: "one", "foo-bar": "one", _: [] },
+    ],
   ] as [string[], ArgsDef, any][])(
     "should parsed correctly %o (%o)",
     (rawArgs, definition, result) => {