[native_assets_cli] Try to minimize the amount of dependencies

[dcharkes]

As many packages may depend on this one, I think it would be nice if we could limit the dependencies to an absolute minimum.

#946 (comment)

$ dart pub deps
native_assets_cli 0.5.0-wip
├── cli_config 0.2.0
│   ├── args 2.4.2
│   └── yaml...
├── collection 1.18.0
├── crypto 3.0.3
│   └── typed_data 1.3.2
│       └── collection...
├── logging 1.2.0
├── pub_semver 2.1.4
│   ├── meta 1.11.0
│   └── collection...
├── yaml 3.1.2
│   ├── source_span 1.10.0
│   │   ├── term_glyph 1.2.1
│   │   ├── collection...
│   │   └── path...
│   ├── string_scanner 1.2.0
│   │   └── source_span...
│   └── collection...
└── yaml_edit 2.1.1
    ├── collection...
    ├── meta...
    ├── source_span...
    └── yaml...

(manually deleted dev dependencies)

To keep:

• collection: Needed for equality checks, hashcodes etc. Unlikely to ever become 2.0.
• meta: Unlikely to ever become 2.0.
• pub_semver: Unlikely to ever become 2.0.

To argue:

• logging: Love it or hate it, but standardizing a logger in a layered architecture makes things so much easier. (E.g. flutter_tools calls native_assets_builder, calls native_assets_cli, calls cli_config, which parses YAML, and at every level we can log errors. Which means we don't have to catch a gazillion different exceptions everywhere in the code.) We could come up with our own logging abstraction, but we'd need to share it across a layer of packages.

To remove:

• crypto: We only use it for hashing the BuildConfig fields. I'm not aware of such functionality in dart:. We could probably move the code to native_assets_builder though. Or we could take an hashing function argument.
• yaml & yaml_edit: Eventually, we'll delete the dependency ([native_assets_builder] build input and output should be JSON instead of YAML #991).
  • We'll also need to remove cli_config as a dependency then.

[mosuem]

Comment on testing hooks: This might introduce more dependencies, such as package:test, but there is no real way around this. Extracting testing into a separate package doesn't help, as anyone using package:hook would also use package:hook_test.
To get the name of the current package, parsing the pubspec introduces a dependency on package:yaml, so we might not remove it after all.

[dcharkes]

Extracting testing into a separate package doesn't help, as anyone using package:hook would also use package:hook_test.

They would add the dependencies to dev_dependencies right?