chore(test-project): Migrate tasks.js and util.js to ESM/TS

[Tobbe]

This PR migrates a couple of files for test-project generation from JavaScript to ESM-compliant TypeScript.

• ESM/TS Migration:
  • Renamed tasks/test-project/util.js to util.mts.
  • Renamed tasks/test-project/tasks.js to tasks.mts.
  • Renamed tasks/test-project/codemods/models.ts to models.mts to support typed imports.
• Native Node Compatibility:
  • Updated imports in test-project.mts and tasks.mts to use the .mts extension. This ensures the scripts remain executable by native Node (24+) without requiring additional loaders or transpilation steps.
• TypeScript & Project Config:
  • Enabled allowImportingTsExtensions and noEmit in tasks/tsconfig.json to support the required ESM import syntax.
  • Added templates to the exclude list in tsconfig.json to ensure a clean tsc output for the infrastructure code.

Verification:

• Ran yarn build:test-project --help using native node to confirm execution.
• Verified that all modified files pass a comprehensive tsc check via yarn tsc -p tasks/tsconfig.json.

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[nx-cloud]

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☁️ Nx Cloud last updated this comment at 2026-01-04 18:54:45 UTC

[greptile-apps]

Greptile Summary

This PR successfully migrates tasks.js and util.js to ESM-compliant TypeScript (.mts files), enabling native Node.js 24+ execution without transpilation tools.

Key Changes:

• ESM Migration: Converted CommonJS (require/module.exports) to ES modules (import/export) in util.mts and tasks.mts
• TypeScript Type Safety: Added proper TypeScript interfaces (WebTasksOptions, ApiTasksOptions) and type annotations throughout
• exec Function Signature: Updated exec() to require explicit args array parameter, aligning with execa's signature and improving type safety
• Import Path Updates: All imports now use explicit .mts extensions (e.g., from './util.mts') as required by Node's native ESM loader
• TypeScript Config: Enabled allowImportingTsExtensions and noEmit in tasks/tsconfig.json to support .mts imports
• CI/CD Updates: Replaced npx tsx with native node execution in GitHub workflows
• Null Safety: Added proper OUTPUT_PATH validation checks with explicit error messages

Technical Details:

• The .mts extension signals to Node.js that files should be treated as ES modules regardless of package.json type field
• Added __filename and __dirname polyfills using fileURLToPath(import.meta.url) for ESM compatibility
• Type assertions added for execa options (e.g., stdio: 'pipe' as const) to satisfy TypeScript's strict checking
• Improved error handling with typed ExecaError class properties

Confidence Score: 5/5

• This PR is safe to merge with no identified issues
• The migration is methodical and complete. All file renames follow a consistent pattern, import paths are correctly updated with .mts extensions, the exec function signature change is properly applied across all call sites, TypeScript configuration is correctly adjusted for ESM, and the workflow files correctly switch from tsx to native node execution. The changes maintain backward compatibility and improve type safety.
• No files require special attention

Important Files Changed

Filename	Overview
tasks/test-project/util.mts	Migrated from CommonJS to ESM with proper TypeScript types, improved exec function signature
tasks/test-project/tasks.mts	Migrated from CommonJS to ESM with TypeScript interfaces, improved type safety and null checks
tasks/tsconfig.json	Added allowImportingTsExtensions and noEmit for ESM .mts import support, excluded templates

Sequence Diagram

sequenceDiagram
    participant Dev as Developer
    participant Node as Node.js
    participant Tasks as tasks.mts
    participant Util as util.mts
    participant Execa as execa
    participant TS as TypeScript

    Dev->>Node: Run native node (24+) script
    Node->>Tasks: Import with .mts extension
    Tasks->>Util: Import functions from util.mts
    
    Note over Tasks,Util: ESM imports require explicit .mts extensions
    
    Tasks->>Tasks: Set OUTPUT_PATH with type checking
    Tasks->>Util: Call exec(cmd, args[], options)
    
    Note over Util,Execa: exec signature now requires args array
    
    Util->>Execa: execa(cmd, args, options)
    Execa-->>Util: Returns promise with result
    Util->>Util: Handle ExecaError with typed properties
    Util-->>Tasks: Return typed execution result
    
    Tasks->>TS: Type checking with interfaces
    Note over Tasks,TS: WebTasksOptions, ApiTasksOptions provide type safety
    
    Tasks-->>Node: Execute tasks with full type safety
    Node-->>Dev: Native ESM execution complete

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[greptile-apps]

_{5 files reviewed, 2 comments}

_{Edit Code Review Agent Settings | Greptile}

[Tobbe]

@greptileai please do a full review again, and update your summary