Why does Composer install laravel/framework instead of illuminate/support?

Question

Composer

There is a certain library whose dependencies include the "illuminate/support:5.3.*" package. Running composer install or composer update, with or without vendor and composer.lock removed, successfully installs all dependencies except the one mentioned above. Instead, vendor has this:

laravel
  framework
    src
      illuminate

What is the focus? As a result, PhpStorm thinks that the package is not installed by highlighting it with a squiggly line in composer.json. At the same time, the package exists as a separate package on Packagist , links to the code lead to the corresponding repository on Github.

Answer 1

Because the framework has a replace section in composer.json: more details in the schema