Find Composer's global composer.json

Here's how to locate the path of Composer's global composer.json, which defines the system packages installed and managed by Composer.

# Retrieve composer's data directory
composer config data-dir
# /Users/nono/.composer

# Print composer.json's contents
cat $(composer config data-dir)/composer.json
# {
#     "require": {
#         "laravel/valet": "^3.0.0",
#         "laravel/installer": "^4.1"
#     }
# }