typeorm:tldr:61162

The command typeorm migration:generate --name ${migration_name} is used in the TypeORM library to generate a new migration file.

Here's what each part of the command means:

• typeorm is the command-line tool provided by TypeORM.
• migration:generate is a specific command within TypeORM used to generate a new migration file.
• --name ${migration_name} is an option which specifies the name of the migration file to be generated. ${migration_name} is a placeholder that should be replaced with the actual name you want to give to your migration file. You can provide any desired name to the migration file, and it's usually recommended to give it a descriptive name that reflects the purpose of the migration.

After executing this command, TypeORM will create a new migration file with the specified name. Migration files are used to manage changes to the database schema in an organized manner. They typically contain instructions for creating, modifying, or removing database tables, columns, indexes, and other schema-related objects.

Once the migration file is generated, you can edit it to define the necessary database schema changes for your application. To apply the migration and actually perform these changes in the database, you can use the typeorm migration:run command.