Migrate System.CommandLine beta4 -> 2.0.7 GA#280
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Mechanical API rename pass — no architectural changes.
- Option<T>(name, description) -> Option<T>(name, ...aliases) { Description = ..., DefaultValueFactory = _ => v, Required = true }
- AddAlias(x) -> ctor params or Aliases.Add(x)
- IsRequired -> Required
- AddCommand(c) -> Subcommands.Add(c)
- SetHandler(async ctx => ...) / SetHandler(binder, opts...) -> SetAction(...)
- ctx.ParseResult.GetValueForOption/Argument(x) -> parseResult.GetValue(x)
- root.InvokeAsync(args) -> root.Parse(args).InvokeAsync()
- Argument<T>(name, description) ctor gone -> single-arg ctor + Description property
Smoke-tested: --help on root, analyze, credential render correctly with
descriptions/defaults/aliases. Functional analyze on a .sqlplan emits the
expected JSON. 71/71 tests passing.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
erikdarlingdata
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Highlights since v1.8.0: - Minimap for plan navigation (#276) - Colored links by accuracy ratio divergence (#289) - Distinct parallelism subtype icons (#285, #288) - Query Store filter ordering fix (#287) - xunit v2 -> v3 migration (#278) - SqlClient 6 -> 7, ScriptDom 170 -> 180 (#279) - System.CommandLine GA (#280) Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Mechanical API rename pass on the CLI. The library was effectively rewritten between beta4 (2022) and GA, but the CLI doesn't use any of the deeper-impact features (no
Parser/CommandLineBuilder, noIConsole, no middleware, no validators, no completions, no hosting integration), so the migration is just find-and-replace.Pattern changes:
new Option<T>(name, description)→new Option<T>(name, ...aliases) { Description = ..., DefaultValueFactory = _ => v, Required = true }AddAlias("-x")→ constructor params orAliases.Add("-x")IsRequired→RequiredAddCommand(c)→Subcommands.Add(c)SetHandler(async ctx => ...)/SetHandler(binder, opts...)→SetAction(parseResult => ...)/SetAction(async (parseResult, ct) => ...)ctx.ParseResult.GetValueForOption/Argument(x)→parseResult.GetValue(x)root.InvokeAsync(args)→root.Parse(args).InvokeAsync()Test plan
dotnet build— 0 errors, 0 source warningsdotnet test— 71/71 passingplanview --help,planview analyze --help,planview credential --help— all render with correct descriptions, defaults, and aliasesplanview analyze <plan.sqlplan> --warnings-only— emits the expected JSONplanview analyze --server X --database Y --query "..."against a real serverplanview query-store --server X --database Y --top 5planview credential add/list/remove🤖 Generated with Claude Code