fix: catch execFile errors

Author: aminya

src/node/lib.ts

@@ -34,18 +34,22 @@ export async function minifyFiles(files: readonly string[], hasComment = true):
  */
 export function spawnMinijson(args: string[]): Promise<string> {
   return new Promise<string>((resolve, reject) => {
-    execFile(minijsonBin, args, (err, stdout, stderr) => {
-      console.error(stderr)
-      console.log(stdout)
+    try {
+      execFile(minijsonBin, args, (err, stdout, stderr) => {
+        console.error(stderr)
+        console.log(stdout)
 
-      if (err) {
-        reject(err)
-      }
-      if (stderr !== "") {
-        reject(stderr)
-      }
-      resolve(stdout)
-    })
+        if (err) {
+          reject(err)
+        }
+        if (stderr !== "") {
+          reject(stderr)
+        }
+        resolve(stdout)
+      })
+    } catch (execErr) {
+      reject(execErr)
+    }
   })
 }