'How to install composer.json in Yii1 project?

i have an existing Yii1 project but without the assets folder. So only the folders: css, images, protected.

So I made just an empty composer.json file in the root directory. And I did a

composer install

But then I get this error:

 "./composer.json" does not contain valid JSON
  Parse error on line 1:

  ^
  Expected one of: 'STRING', 'NUMBER', 'NULL', 'TRUE', 'FALSE', '{', '['

And yes, of course I have read the offical documentation for composer:

https://getcomposer.org

But I can't find how I then can run composer install.

Thank you



Solution 1:[1]

Oke, I used a existing composer.json file for Yii1 from github and now it has installed the vendor folder

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 mightycode Newton