Faster startup (4/4): Lazy imports and V8 compile cache

[gonzaloriestra]

WHY are these changes introduced?

The CLI requires too much time to start working, it feels slow

WHAT is this pull request doing?

Defers heavy module imports to point of use across the codebase and enables V8 compile caching for faster subsequent runs.

• base-command.ts: lazy imports for ui.js (600KB React/Ink), error-handler.js, notifications-system.js, environments.js — only loaded when actually needed
• prerun hook: parallel imports via Promise.all for analytics, notifications, and package-manager modules
• postrun hook: lazy imports for analytics, deprecations, and output modules
• node-package-manager.ts: lazy latest-version import (~113ms saved)
• context/local.ts: lazy fs.js and system.js to break circular dependency chains
• is-global.ts: lazy imports for output.js, system.js, version.js, ui.js
• custom-oclif-loader.ts: fire-and-forget init hooks via runHook override so app-init and hydrogen-init run in background
• V8 compile cache: module.enableCompileCache() in dev.js/run.js caches bytecode between runs, eliminating ~30ms compile overhead

Combined improvement: ~130ms across all commands

How to test your changes?

• All commands work correctly (hooks fire in background)
• shopify version / shopify help return correct output
• Second run is faster than first (V8 cache warm)

Measuring impact

• n/a - this doesn't need measurement, e.g. a linting rule or a bug-fix

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes

Made with Cursor

[gonzaloriestra]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• Faster startup (4/4): Lazy imports and V8 compile cache #7054 👈 (View in Graphite)
• Faster startup (3/4): Inline app-init and hydrogen-init hooks #7053
• Faster startup (2/4): Fire-and-forget hooks + process.exit(0) #7052
• Faster startup (1/4): Lazy command loading #7010 : 1 other dependent PR (#7015 )
• main

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