chore(ESM): convert-to-ssr-fixture ESM rewrite

[Tobbe]

I was getting this error in another PR (#938)

Run ./tasks/test-project/convert-to-ssr-fixture /home/runner/work/cedar/test-project
node:internal/modules/cjs/loader:1424
  throw err;
  ^

Error: Cannot find module './tasks'
Require stack:
- /home/runner/work/cedar/cedar/tasks/test-project/convert-to-ssr-fixture
    at Module._resolveFilename (node:internal/modules/cjs/loader:1421:15)
    at defaultResolveImpl (node:internal/modules/cjs/loader:1059:19)
    at resolveForCJSWithHooks (node:internal/modules/cjs/loader:1064:22)
    at Module._load (node:internal/modules/cjs/loader:1227:37)
    at TracingChannel.traceSync (node:diagnostics_channel:328:14)
    at wrapModuleLoad (node:internal/modules/cjs/loader:245:24)
    at Module.require (node:internal/modules/cjs/loader:1504:12)
    at require (node:internal/modules/helpers:152:16)
    at Object.<anonymous> (/home/runner/work/cedar/cedar/tasks/test-project/convert-to-ssr-fixture:8:28)
    at Module._compile (node:internal/modules/cjs/loader:1761:14) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/home/runner/work/cedar/cedar/tasks/test-project/convert-to-ssr-fixture'
  ]
}

The reason being that ./tasks was renamed to ./tasks.mts earlier (see #934), and this import was missed in that PR, partly because the convert-to-ssr-fixture file was extensionless, so I didn't immediately spot it as a JS/TS file that might need attention, and partly because this workflow is only executed on PRs that our "code change detection" script identifies as SSR-related code. And the original PR that renamed tasks.mts didn't trigger the SSR change detection

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[nx-cloud]

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☁️ Nx Cloud last updated this comment at 2026-01-06 11:00:59 UTC

[greptile-apps]

Greptile Summary

Migrated convert-to-ssr-fixture from a shell script to an ESM TypeScript module (.mts).

Key changes:

• Removed shebang and converted CommonJS require statements to ESM import statements
• Changed require('node:path') to import path from 'node:path'
• Updated imports for yargs/helpers and yargs/yargs to ESM syntax
• Changed ./tasks import to ./tasks.mts to match the renamed file
• Cleaned up formatting and comments for consistency
• Updated GitHub workflow to execute the file using node ./tasks/test-project/convert-to-ssr-fixture.mts

This change aligns with the ongoing ESM migration effort in the repository and follows the pattern established in recent commits (e.g., #934). The workflow executes the TypeScript file using Node.js 24, which has experimental TypeScript support.

Confidence Score: 5/5

• This PR is safe to merge with minimal risk
• The changes are straightforward: a direct migration from CommonJS to ESM with no logic changes. The conversion follows established patterns in the codebase (similar migrations in chore(test-project): Migrate tasks.js and util.js to ESM/TS #934), uses standard ESM import syntax, and properly updates the workflow execution command. The code maintains the same functionality while adhering to the repository's ESM migration strategy.
• No files require special attention

Important Files Changed

Filename	Overview
tasks/test-project/convert-to-ssr-fixture.mts	Migrated from shell script to ESM TypeScript module with proper imports and formatting
.github/workflows/ssr-smoke-tests.yml	Updated workflow command to execute the renamed .mts file using Node.js

Sequence Diagram

sequenceDiagram
    participant GHA as GitHub Actions Workflow
    participant Node as Node.js 24
    participant Script as convert-to-ssr-fixture.mts
    participant Tasks as tasks.mts
    participant Yargs as yargs library
    participant FS as File System

    GHA->>Node: Execute: node convert-to-ssr-fixture.mts <project-path>
    Node->>Script: Load ESM module
    Script->>Yargs: Parse CLI arguments using yargs
    Yargs-->>Script: Return parsed args (project path)
    Script->>Tasks: Import streamingTasks function
    Script->>Script: Resolve OUTPUT_PROJECT_PATH
    Script->>Tasks: Call streamingTasks(path, {verbose: true})
    Tasks-->>Script: Return configured task runner
    Script->>Tasks: Execute tasks.run()
    Tasks->>FS: Apply SSR configuration to test project
    FS-->>Tasks: Files modified
    Tasks-->>Script: Tasks completed
    Script->>GHA: Exit with status code

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