How to solve the error : (node:9544) UnhandledPromiseRejectionWarning: TypeError: sass.sync is not a function while executing the gulp commands?

The error message you’re encountering, (node:9544) UnhandledPromiseRejectionWarning: TypeError: sass.sync is not a function, indicating that there’s a problem with the usage of the sass.sync function in your code, possibly within your Gulp task related to deploying extensions.

Here are a few steps you can take to troubleshoot and solve this issue:

1. Check Dependencies: Make sure you have the required dependencies installed. This error might occur if there’s a mismatch between the versions of Gulp, Node.js, and other related packages.
2. Check the Code: Review the code where you’re using the sass.sync function. Ensure that you’re importing it correctly and using it as intended. It’s possible that the function has been deprecated or changed in a newer version of the Sass package.
3. Update Packages: If you’re using outdated packages, it’s a good idea to update them. Use the following commands to update your Node.js packages:

   npm update

4. Check Sass Package: If you’re using Sass in your Gulp task, make sure you have the correct version of the Sass package installed. You might need to use something like gulp-sass or gulp-dart-sass in your Gulp task.
5. Check Gulp Task: Review your Gulp task configuration, mainly where you’re using the sass.sync function. Ensure you’re using the correct function and following the proper syntax.
6. Error Handling: Wrap your code that uses the sass.sync function inside a try-catch block to handle any exceptions that might occur. This can help you identify the root cause of the issue.

Here’s an example of how you might structure your Gulp task and handle errors:

const gulp = require('gulp');
const sass = require('gulp-sass');

gulp.task('extension:deploy', async () => {
  try {
    await gulp.src('src/*.scss')
      .pipe(sass.sync().on('error', sass.logError))
      .pipe(gulp.dest('dist'));
  } catch (error) {
    console.error('Error during extension deployment:', error);
  }
});