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feat(config): New command line arguments parser - #130
New command line arguments parser, to replace ArgParser and ArgResults of the args package. Implemented from scratch to enable full control of the command line parsing, prepare for flexible commands and options definitions, flexible usage text implementations, and much improved command line completion support, which will be provided in upcoming PRs.
This change is backwards compatible, and prerequisite for an upcoming replacement of CommandRunner and Command of the args package.
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Walkthrough
The config package adds a scanner and command parser, integrates parsed arguments into configuration resolution, and expands parser validation. Workspace constraints and CI versions move to Dart 3.9 and Melos 7. Existing code and tests receive formatting updates.
Changes: Config argument parsing
Layer / File(s)
Summary
Scanner and command parser packages/config/lib/src/config/arg_parser/*, packages/config/test/config/arg_parser/*
Adds token scanning, command definitions, option and command parsing, persistent-option handling, pass-through parsing, definition validation, and extensive tests.
Adds the ParsedArgs abstraction, legacy parser bridging, new parser resolution, duplicate-claim validation, and formatted parse errors. Tests update configuration and compatibility expectations.
Workspace and package configuration .github/workflows/ci.yml, pubspec.yaml, packages/*/pubspec.yaml, melos.yaml
Raises SDK constraints to Dart 3.9, updates CI to Dart 3.9 and 3.13, raises the Melos constraint to 7.0, adds characters to config, and removes melos.yaml.
sequenceDiagram
participant Arguments
participant scanArgs
participant scanAndParseCommands
participant Configuration.resolve
Arguments->>scanArgs: raw arguments
scanArgs->>scanAndParseCommands: scanned tokens
scanAndParseCommands->>Configuration.resolve: parsed arguments and errors
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Possibly related PRs
serverpod/cli_tools#131: Updates the same SDK constraints, CI matrix, Melos constraint, and melos.yaml configuration.
Merge Risk: Moderate · up to 1e03a
Configuration resolution rejects commands using the previously supported -- terminator. Restore that behavior before merging.
Pre-merge checks: 5
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The title clearly and concisely identifies the main change: adding a new command-line arguments parser for the config package.
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New command line arguments parser, to replace ArgParser and ArgResults of the args package. Implemented from scratch to enable full control of the command line parsing, prepare for flexible commands and options definitions, flexible usage text implementations, and much improved command line completion support.
New command line arguments parser, to replace ArgParser and ArgResults of the args package. Implemented from scratch to enable full control of the command line parsing, prepare for flexible commands and options definitions, flexible usage text implementations, and much improved command line completion support.
ConfigParser (the drop-in replacement for args package ArgParser) is updated to work together with the new parser implementation, using the new parser facade.
christerswahn
changed the title
feat(config)!: BREAKING, WIP Command/CommandRunner replacement
feat(config): New command line arguments parser
Nov 1, 2026
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Actionable comments posted: 2
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Inline comments:
Review comments at @packages/config/lib/src/config/arg_parser_facade.dart:
- Around line 44-49: Update newParsedArgs to call scanAndParseArgs with a
ScanMode that passes through the remaining arguments after `--`, so the
terminator and following values are not reported as parse errors. Keep bare `-`
handling separate and preserve its existing behavior unless backwards
compatibility requires otherwise.
Review comments at @packages/config/lib/src/config/arg_parser/parser.dart:
- Around line 417-422: Remove the CommandDefinition<O> cast from the subcommand
passed to _validateCommandsAndOptions, allowing each subcommand’s own option
type to be preserved during recursive validation.
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New command line arguments parser, to replace ArgParser and ArgResults of the args package. Implemented from scratch to enable full control of the command line parsing, prepare for flexible commands and options definitions, flexible usage text implementations, and much improved command line completion support, which will be provided in upcoming PRs.
This change is backwards compatible, and prerequisite for an upcoming replacement of CommandRunner and Command of the args package.
Stacked on PR #131
Summary by CodeRabbit
New Features
Bug Fixes
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