Before doing this update you need to make sure your Drupal core is 8.8 or higher then follow the steps below:
1. Remove drupal-composer/drupal-scaffold from your project:
composer remove drupal-composer/drupal-scaffold2. Modify your composer.json and remove any instant of drupal-scaffold located if your extra or scripts section like the following:
Note: The following does not work with the new scaffold project.
"drupal-scaffold": {
"excludes": [ ".htaccess", "robots.txt" ]
},3. Install the drupal/core-composer-scaffold by running the following command:
composer require drupal/core-composer-scaffold:^8.8 --no-update4. You must define where the web root is located. It does so via the locations mapping, as shown below:
"extra": {
"drupal-scaffold": {
"locations": {
"web-root": "./docroot"
},
...
}
}5. You might prefer to entirely replace a scaffold file provided by a dependency, and receive no further updates for it. You can do this by adding the following:
"extra": {
"drupal-scaffold": {
"file-mapping": {
"[web-root]/.htaccess": false
}
}
}6. Run the following to update your lock file:
composer update --lock7. If you are still using drupal/core in your composer.json, simply remove it and add drupal/core-recommended:
composer remove drupal/core
composer require drupal/core-recommended:^8.8