sample.txt

D:\test>composer init


  Welcome to the Composer config generator



This command will guide you through creating your composer.json config.

Package name (<vendor>/<name>) [chris.wright/test]: test/test
Description []: test
Author [Chris Wright <daverandom@php.net>, n to skip]: n
Minimum Stability []: stable
Package Type (e.g. library, project, metapackage, composer-plugin) []: project
License []: proprietary

Define your dependencies.

Would you like to define your dependencies (require) interactively [yes]?
Search for a package: daverandom/serial
Enter the version constraint to require (or leave blank to use the latest version): dev-master
Search for a package:
Would you like to define your dev dependencies (require-dev) interactively [yes]? no

{
    "name": "test/test",
    "description": "test",
    "type": "project",
    "require": {
        "daverandom/serial": "dev-master"
    },
    "license": "proprietary",
    "minimum-stability": "stable"
}

Do you confirm generation [yes]? yes