feat(pack-cli): support JS config (utoopack.config.mjs/js) and defineConfig

[yuzheng14]

Summary

Support JS config files and defineConfig helper.

Changes

• pack-cli: resolveFromConfigFile for json/mjs/js, async resolveBuildOptions
• pack: defineConfig() and UserConfig type in pack-shared
• examples/config-js: example project for JS config

Note

TypeScript config (utoopack.config.ts) is supported only on Node.js v24+ (native TS execution). See packages/pack-cli/src/utils/common.ts for CONFIG_FILE_NAMES and TS extension.

Made with Cursor

[gemini-code-assist]

Summary of Changes

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This pull request significantly enhances the flexibility of the utoopack build system by enabling the use of JavaScript files for configuration. This change allows users to define their build settings with dynamic logic and leverage the full power of JavaScript, moving beyond static JSON configurations. The addition of a defineConfig helper also improves the developer experience by providing type safety and better IDE support for these new configuration formats.

Highlights

• JS Config Support: Introduced support for JavaScript configuration files (utoopack.config.mjs and utoopack.config.js), allowing for more dynamic and programmatic build configurations.
• defineConfig Helper: Added a defineConfig helper function to provide type-safe configuration with editor support, similar to other modern build tools.
• Asynchronous Config Resolution: Refactored the resolveBuildOptions function in pack-cli to be asynchronous, enabling the dynamic import of JS/MJS configuration files.
• New Example Project: Included a new example project, examples/config-js, to demonstrate the usage of JavaScript-based configuration.

Changelog

• examples/config-js
  • Created a new example project to demonstrate JS config usage.
• pack
  • Introduced defineConfig() helper for type-safe configuration.
  • Added UserConfig type in pack-shared.
• pack-cli
  • Added resolveFromConfigFile to support JSON, MJS, and JS config files.
  • Made resolveBuildOptions asynchronous to handle dynamic config imports.

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[gemini-code-assist]

Code Review

This pull request introduces support for JavaScript configuration files (utoopack.config.mjs/js) and a defineConfig helper, which is a valuable enhancement for providing more dynamic and type-safe configurations. The implementation is well-structured, including a new example project and necessary updates to the CLI logic. My review includes one suggestion to improve the file reading logic to be fully asynchronous, aligning with best practices for Node.js applications.