perf(core): lazy-load config deps & treeshake barrel exports

[zrosenbauer]

Summary

• Treeshake barrel exports (4b176df): Replace wildcard export * re-exports in @kidd-cli/utils/fp with explicit named exports, enabling bundler tree-shaking
• Lazy-load config layer: Dynamic import() the config loader (c12 → yaml, jiti, confbox) in both cli.ts and runtime.ts so the ~15K-line dependency chain is only parsed when actually running a command — not during --help/--version rendering

These two changes together eliminate the dominant startup cost identified in CPU profiling (42ms compileSourceTextModule for the 30K-line bundle).

Files changed

• packages/utils/src/fp/index.ts — explicit named re-exports instead of export *
• packages/core/src/cli.ts — dynamic import('@kidd-cli/config/loader') inside resolveCommandsFromConfig()
• packages/core/src/runtime/runtime.ts — dynamic import('@/lib/config/index.js') inside resolveConfig()

Test plan

• pnpm check passes (typecheck + lint + format)
• pnpm test --filter=@kidd-cli/core — all 856 tests pass
• Verify --help and --version startup time improvement with profiling

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
oss-kidd	Ignored	Preview	Mar 29, 2026 11:54pm

[changeset-bot]

🦋 Changeset detected

Latest commit: 5a19f17

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 5 packages

Name	Type
@kidd-cli/utils	Minor
@kidd-cli/bundler	Patch
@kidd-cli/cli	Patch
@kidd-cli/config	Patch
@kidd-cli/core	Patch

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[codspeed-hq]

Merging this PR will create unknown performance changes

🎉 Hooray! exec-harness just leveled up to 1.2.0!

A heads-up, this is a breaking change and it might affect your current performance baseline a bit. But here's the exciting part - it's packed with new, cool features and promises improved result stability 🥳!
Curious about what's new? Visit our releases page to delve into all the awesome details about this new version.

🆕 2 new benchmarks
⏩ 2 skipped benchmarks¹

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
🆕	WallTime	icons status	N/A	411.9 ms	N/A
🆕	WallTime	icons --help	N/A	392.6 ms	N/A

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_{Comparing perf/treeshake-barrel-exports (5a19f17) with main (9a6fa77)}

Footnotes

1. 2 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[coderabbitai]

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📝 Walkthrough

Walkthrough

Replaced a wildcard export from ts-pattern with explicit exports match and P in packages/utils/src/fp/index.ts. Converted two previously top-level static imports into dynamic imports: loadConfig is imported inside resolveCommandsFromConfig in packages/core/src/cli.ts, and createConfigClient is imported inside resolveConfig in packages/core/src/runtime/runtime.ts. Tests and helpers were updated: tests/helpers.ts adds CliRunResult, CliRunnerOptions, SubprocessRunner, InProcessRunner, a new createInProcessRunner implementation, and adjusts createExampleRunner types; tests/bench/icons.bench.ts switches to createInProcessRunner and awaits runner results.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• perf(packages/core): replace system_profiler with pure JS font scanning #86 — Changes the same test helpers and benchmark runner files (in-process/subprocess CLI runner and icons benchmark adjustments).

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the two main changes: performance optimization through lazy-loading config dependencies and treeshaking barrel exports via explicit named exports.
Description check	✅ Passed	The description clearly relates to the changeset, providing specific details about treeshaking barrel exports and lazy-loading config dependencies with file paths and rationale.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch perf/treeshake-barrel-exports

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[coderabbitai]

Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@tests/helpers.ts`:
- Around line 98-99: The code builds entryPath (const entryPath =
`${EXAMPLES_DIR}/${example}/${distPath}`) and then passes it directly to
import(), which breaks on Windows; instead convert the filesystem path to a
file:// URL using pathToFileURL(entryPath) and add the cache-bust query via the
returned URL's searchParams before calling import(); update usages around
entryPath and the dynamic import to call pathToFileURL and use
url.searchParams.append(...) so import(url.toString()) receives a proper file://
URL.
- Around line 100-141: The createInProcessRunner function mutates process
globals (process.argv/process.exit/process.stdout.write/process.stderr.write)
making it re-entrancy unsafe; wrap the section that applies and restores these
global patches and imports entryPath in a single-flight/async-mutex so only one
runner can monkeypatch at a time, await the mutex before applying the patches,
release it in the finally block after restoring originals, and ensure the lock
is held across the await import(`${entryPath}?t=${Date.now()}`) to prevent
interleaving between concurrent invocations.

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Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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📥 Commits

Reviewing files that changed from the base of the PR and between 1e213ec and 2a08444.

📒 Files selected for processing (2)

• tests/bench/icons.bench.ts
• tests/helpers.ts