fix(ssh): modernize filesystem handling and package exports for NodeNext compatibility

ts/smartssh.classes.sshkey.ts

@@ -7,20 +7,16 @@ export class SshKey {
   private _hostVar: string;
   private _authorized: boolean;
 
-  private _smarthshellInstance = new plugins.smartshell.Smartshell({
-    executor: 'bash',
-  });
-
   /**
    * the constructor for class SshKey
    */
   constructor(
     optionsArg: { private?: string; public?: string; host?: string; authorized?: boolean } = {}
   ) {
-    this._privKey = optionsArg.private;
-    this._pubKey = optionsArg.public;
-    this._hostVar = optionsArg.host;
-    this._authorized = optionsArg.authorized;
+    this._privKey = optionsArg.private ?? '';
+    this._pubKey = optionsArg.public ?? '';
+    this._hostVar = optionsArg.host ?? '';
+    this._authorized = optionsArg.authorized ?? false;
   }
 
   // this.host
@@ -87,20 +83,20 @@ export class SshKey {
   }
 
   // methods
-  read(filePathArg) {}
+  read(filePathArg: string) {}
 
   async store(dirPathArg: string) {
     plugins.fs.ensureDirSync(dirPathArg);
     let fileNameBase = this.host;
     if (this._privKey) {
       let filePath = plugins.path.join(dirPathArg, fileNameBase);
-      plugins.smartfile.memory.toFsSync(this._privKey, filePath);
-      await this._smarthshellInstance.exec(`chmod 0600 ${filePath}`);
+      plugins.fs.writeFileSync(filePath, this._privKey);
+      plugins.fs.chmodSync(filePath, 0o600);
     }
     if (this._pubKey) {
       let filePath = plugins.path.join(dirPathArg, fileNameBase + '.pub');
-      plugins.smartfile.memory.toFsSync(this._pubKey, filePath);
-      await this._smarthshellInstance.exec(`chmod 0600 ${filePath}`);
+      plugins.fs.writeFileSync(filePath, this._pubKey);
+      plugins.fs.chmodSync(filePath, 0o600);
     }
   }
 }