Develop Unlocked Packages

A package is a top-level container that holds important details about the app or package: the package name, description, and associated namespace.

You supply the package details in the package descriptor section of your sfdx-project.json project configuration file.

Create and Update an Unlocked Package

When you’re ready to test or share your package, use the sf package create command to create a package.
Create New Versions of an Unlocked Package

A package version is a fixed snapshot of the package contents and related metadata. The package version lets you manage changes and track what’s different each time you release or deploy a specific set of changes.
Guidance for Package Version Numbering

Use package versions to evolve your managed package, and release subsequent package versions without breaking existing package users. Every package version is a fixed snapshot of the package contents and related metadata.
Code Coverage for Unlocked Packages

Before you can promote and release an unlocked package, the Apex code must meet a minimum 75% code coverage requirement. You can install package versions that don’t meet code coverage requirements only in scratch orgs and sandboxes.
Considerations for Promoting Packages with Dependencies

If your company is developing a package that has a package dependency, ask yourself these questions before promoting (releasing) a new package version.
Release an Unlocked Package

Each new package version is marked as beta when its created. As you develop your package, you may create several package versions before you create a version that is ready to be released and installed in production orgs.
Update an Unlocked Package Version

You can update most properties of a package version from the command line. For example, you can change the package version name or description. One important exception is that you can’t change the release status.
Hard-Deleted Components in Unlocked Packages

When these components are removed from an unlocked package, they’re hard deleted from the target install org during the package upgrade.
Delete an Unlocked Package or Package Version

Use the sf package version delete and sf package delete to delete packages and package versions that you no longer need.
View Package Details

View the details of previously created packages and package versions from the command line.