fix(core): cosmetics

ts/index.ts

@@ -1,2 +1,2 @@
 export * from './smartshell.classes.smartshell';
-export { which } from './smartshell.plugins';
+export { which } from './smartshell.plugins';

ts/smartshell.classes.shellenv.ts

@@ -82,7 +82,7 @@ export class ShellEnv {
       sourceString = sourceString + `source ${sourceFilePath} && `;
     }
 
-    // deal with avaiable path
+    // deal with available path
     let pathString = 'PATH=$PATH';
     for (const pathDir of this.pathDirArray) {
       pathString += `:${pathDir}`;

ts/smartshell.classes.smartshell.ts

@@ -59,6 +59,7 @@ export class Smartshell {
     const spawnlogInstance = new ShellLog();
     const execChildProcess = cp.spawn(commandToExecute, [], {
       shell: true,
+      cwd: process.cwd(),
       env: process.env,
       detached: false,
     });