wasi: refactor destructuring object on constructor

PR-URL: #31185
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

lib/wasi.js

@@ -25,13 +25,11 @@ class WASI {
     if (options === null || typeof options !== 'object')
       throw new ERR_INVALID_ARG_TYPE('options', 'object', options);
 
-    // eslint-disable-next-line prefer-const
-    let { args, env, preopens } = options;
+    const { env, preopens } = options;
+    let { args = [] } = options;
 
     if (ArrayIsArray(args))
       args = ArrayPrototypeMap(args, (arg) => { return String(arg); });
-    else if (args === undefined)
-      args = [];
     else
       throw new ERR_INVALID_ARG_TYPE('options.args', 'Array', args);